CA2486564A1 - Acetamides and benzamides that are useful in treating sexual dysfunction - Google Patents

Acetamides and benzamides that are useful in treating sexual dysfunction Download PDF

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Publication number
CA2486564A1
CA2486564A1 CA002486564A CA2486564A CA2486564A1 CA 2486564 A1 CA2486564 A1 CA 2486564A1 CA 002486564 A CA002486564 A CA 002486564A CA 2486564 A CA2486564 A CA 2486564A CA 2486564 A1 CA2486564 A1 CA 2486564A1
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Prior art keywords
acetamide
hydrogen
methyl
cyano
pyridinyl
Prior art date
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Abandoned
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CA002486564A
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French (fr)
Inventor
Pramila A. Bhatia
Jerome F. Daanen
Ahmed A. Hakeem
Teodozyj Kolasa
Mark A. Matulenko
Kathleen H. Mortell
Meena V. Patel
Andrew O. Stewart
Xueqing Wang
Zhiren Xia
Henry Q. Zhang
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Abbott Laboratories
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Individual
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Publication date
Priority claimed from US10/154,373 external-priority patent/US20030232836A1/en
Priority claimed from US10/425,152 external-priority patent/US20040029887A1/en
Application filed by Individual filed Critical Individual
Priority claimed from PCT/US2003/015868 external-priority patent/WO2003099266A2/en
Publication of CA2486564A1 publication Critical patent/CA2486564A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
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    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
    • A—HUMAN NECESSITIES
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    • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
    • A61K31/4025—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil not condensed and containing further heterocyclic rings, e.g. cromakalim
    • A—HUMAN NECESSITIES
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    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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    • A61K31/425—Thiazoles
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    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4418—Non condensed pyridines; Hydrogenated derivatives thereof having a carbocyclic group directly attached to the heterocyclic ring, e.g. cyproheptadine
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    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4436—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a heterocyclic ring having sulfur as a ring hetero atom
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    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
    • A—HUMAN NECESSITIES
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    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/444—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring heteroatom, e.g. amrinone
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    • A61K31/33—Heterocyclic compounds
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    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445—Non condensed piperidines, e.g. piperocaine
    • A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445—Non condensed piperidines, e.g. piperocaine
    • A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
    • A61K31/4535—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a heterocyclic ring having sulfur as a ring hetero atom, e.g. pizotifen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445—Non condensed piperidines, e.g. piperocaine
    • A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
    • A61K31/454—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. pimozide, domperidone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/445—Non condensed piperidines, e.g. piperocaine
    • A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
    • A61K31/4545—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring hetero atom, e.g. pipamperone, anabasine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A—HUMAN NECESSITIES
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    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene
    • A—HUMAN NECESSITIES
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    • A61K31/33—Heterocyclic compounds
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    • A61K31/50—Pyridazines; Hydrogenated pyridazines
    • A61K31/501—Pyridazines; Hydrogenated pyridazines not condensed and containing further heterocyclic rings
    • A—HUMAN NECESSITIES
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    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings

Abstract

The present invention relates to the use of compounds of formula (I), for the treatment of sexual dysfunction and to compositions containing compounds of formula (I) for the treatment of sexual dysfunction.

Description

ACETAMIDES AND BENZAMIDES THAT ARE USEFUL IN TREATING SEXUAL
DYSFUNCTION
This application is a continuation-in-part of U.S. Patent Application Serial No.
10/154,373, filed May 23, 2002, which is hereby incorporated by reference.
TECHNICAL FIELD
The present invention relates to the use of acetamides and benzamides and compositions containing these compounds for the treatment of sexual dysfunction.
BACKGROUND OF THE INVENTION
Preclinical evidence indicates that dopamine (DA) plays a role in penile erection in mammals. Sexual stimulation can be initiated by sensory (erotic) information reaching the cerebral cortex in mammals. The cerebral cortex has extensive neuronal connections with limbic structures like the amygdala, as well as midbrain structures like the periaqueductal gray (PAG) and the hypothalamus. Two important nuclei in the hypothalamus are the medial preoptic area (MPOA) and the paraventricular nucleus (PVN). The MPOA and PVN
nuclei play a critical role in sexual behavior as bilateral lesions of these areas completely eliminate male sexual behavior. The incerto-hypothalamic dopaminergic pathway that innervates the PVN and the MPOA nuclei has been associated with the pro-erectile effect of DA
agents.
Systemic administration of DA receptor agonists like apomorphine ((6aR) 5,6,6a,7-tetrahydro-6-methyl-4H-dibenzo[de,g]quinoline-1,0,11-diol), quinpirole and (-) 3-(3-hydroxyphenyl)-N-propylpiperidine (3-PPP) facilitate penile erection in rats, an effect blocked by haloperidol, a central DA antagonist. As the erectogenic effect .can not be blocked by dornperidone, a peripheral DA antagonist, it is believed that the pro-erectile effect of DA agonists is centrally mediated.
Clinical data also indicates that DA systems in the CNS play a role on the regulation of male sexual behavior as indicated by the sexual stimulatory effect of L-dopa in Parkinson's patients and by the pro-erectile effect of apomorphine in humans.
DA receptors belong to a superfamily of protein receptors that signal across the cell membrane by coupling to intracellular GTP-binding proteins. Several G proteins have been identified (including Gs, Gq and Gi) that lead to specific intracellular events.

There are five known DA receptors which are classified into two groups, D;-like and DZ-like. The DI-like receptors include DI and D5. The DZ-like receptors include DZ, D3 and D4. The D;-like family receptor subtypes are GS-coupled and can activate adenylate cyclase.
The DZ-like family receptor subtypes are G;-coupled and they increase intracellular calcium level and inhibit adenylate cyclase.
The D1-like family members are GS-coupled receptors that can activate adenylate cyclase. The D1 receptor is the most abundant and widespread DA receptor in the CNS both by mRNA expression and by immunohistochemical studies. It is found in the striatum, nucleus accumbens and olfactory tubercle as well as the limbic system, hypothalamus and thalamus. The D1 receptor expression has been reported in the heart and kidney, and despite that the function of these peripheral D1 receptors remains to be clarified, its role on the control of hemodynamic variables has been confirmed. The D5 receptor, while having a higher affinity for DA than the D1 receptor, is sparsely distributed in the CNS with no evidence of expression outside the CNS. .
The DZ-like family members are G; coupled receptors that inhibit adenylate cyclase and increase intracellular calcium levels. The D2 receptor is the most abundant of the DZ-like receptors and is located in brain areas such as the striatum and substantia nigra, and in peripheral areas such as the heart, pituitary gland and kidney. The D3 receptor is found abundantly in the islands of Calleja with distinct cluster populations in the ventral striatum/nucleus accumbens regions, olfactory tubercle, dendate gyrus and striatal cortex.
Expression of the D4 receptor has been documented by in situ RNA hybridization and immunohistochemical studies. Recently, studies revealed that D4 expression is highest in the entorhinal cortex, lateral septal nucleus, hippocampus and the medial preoptic area of the hypothalamus. Localization of D4 is distinct from the distribution of D2 in the brain, as DZ
receptors are most abundant in striatal areas. The expression of~D4 receptors in the MPOA of the hypothalamus is of importance to the facilitation of penile erection in view of the role of the hypothalamus as an area of integration between the cortex and the spinal pathways. The participation of D4 receptors in other CNS regions, thalamic, subthalamic and spinal can not be excluded.
The present invention identifies ~a therapeutic use for acetamides and benzamides of formula (I) in the treatment of sexual dysfunction in mammals. More specifically, these compounds are useful in the treatment of sexual dysfunction including, but not limited to, male erectile dysfunction (MED).
SUMMARY OF THE INVENTION , The present invention relates to a method of treating sexual dysfunction in a mammal, in particular humans, comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) Z'B
m. , ~J
A D R
A
(I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein A is aryl, arylalkyl, cycloalkyl, cycloalkylalkyl, heterocycle, or heterocyclealkyl;
L is -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or-C(S)N(R~)- wherein the left end of said -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or -C(S)N(R~)- is attached to A
and the right end is attached to D;
D is alkylene, fluoroalkylene, or hydroxya~lkylene;
Z is N, C or CRB;
RA is hydrogen or alkyl;
RB is hydrogen, alkyl, or halogen;
--- is a bond when Z is C and --- is absent when Z is N or CRB;
B is R2 R~
R1 w Rs R2 R1 w Rs Ra R~ R3 I ~ N ~ R3 ~, / R4 ,'~ I N~ ~ N+ R4 ~ ~ R
R5 , R4 , p = ~ =~, N a R~ R
R, N\ R3 R~ R2 , O \ R3 X 2 .N~R3 .N, ~ R ~~R3 .
N Ra ~ ~5 N ~ ~ N 4 a or -~ Y
R1, R2, R3, R4 and RS are each independently hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, or (NZ3Z4)sulfonyl;
Z1 and Z2 are each independently hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, or formyl;
Z3 and Z4 are each independently hydrogen, alkyl, aryl, or arylalkyl;
X is N(R6), O or S;
Y is C(R4) or N;
R6 is hydrogen or alkyl; and R~ is hydrogen or alkyl.
DETAILED DESCRIPTION OF THE INVENTION
All patents, patent. applications, and literature references cited in the specification are herein incorporated by reference in their entirety.
In its principle embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal, in particular humans, comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) RA
(I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein A is aryl, arylallcyl, cycloalkyl, cycloalkylalkyl, heterocycle, or heterocyclealkyl;
L is -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or-C(S)N(R~)- wherein the left end of said -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or -C(S)N(R~)- is attached to A
and the right end is attached to D;
D is alkylene, fluoroalkylene, or hydroxyalkylene;
Z is N, C or CRB;
RA is hydrogen or alkyl;
RB is hydrogen, alkyl, or halogen;
--- is a bond when Z is C and --- is absent when Z is N or CRB;
B is R~ I ~ Rs R2 ~ R~ ~ Rs R2 R~ I w Rs I ~ N w Rs Ra ~ ~ N+ Ra ~ ° R
Rs ~ ~ N Ra ~ O - ~ -~, N a R~ N\ R3 R1 R2 O \ R3 X \R2.
.N~R3 .N, ° R / ~~R3 .
:~, N Ra , ~, N , ~ N a , or ~ Y , Rl, R2, R3, R4 and RS are each independently hydrogen, alkoxy, alkenyl, alkyl, alkylsulfmyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZIZz, (NZ3Za)alkyl, (NZ3Za)carbonyl, or (NZ3Za)sulfonyl;
Zl and Z2 are each independently hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, or formyl;
Z3 and Za are each independently hydrogen, alkyl, aryl, or arylalkyl;
X is N(R6), O or S;
Y is C(Ra) or N;
R6 is hydrogen or alkyl; and R~ is hydrogen or alkyl.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ w Rs '~'7 I / Ra Rs ; Z is N; --- is absent; L is -N(R~)C(O)-; and D, Rl, R2, R3, Ra, R5, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is~

R2 .
R~ ~ Rs .
R4 .
R5 ; RI is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZiZz, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is N; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is R1 \ R3 '~, I ~ R~
R5 ; Rl is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, or (NZ3Z4)alkyl; R2 is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is N; --- is absent; D. is -CH(CH3)-; L
is -N(R~)C(O)-;
and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ \ R3, R~
R5 ; Z is N; --- is absent; L is -N(R~)C(O)-; and D, R1, R2, R3, R4, R5, R~, and RA
are as defined in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R1 \ R3 .

R5 ; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R1 \ R3 R5 ; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R1 \ R3 ' .
'~ N R4; Z is N; --- is absent; L is -N(R7)C(O)-; and D, R1, Rz, R3, R4, R~, and RA are as defined in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ 1 Zz; B is Rz '~ N~ .4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHz-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is Rz '2'a N R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and Rø are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHz-; L is -N(R~)C(S)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZz; B is R~ ~ R3 R4; R~ is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z~)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -N(R7)C(O)-; and R~ and RA are as defined in formula (I). .
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R~ ~ R3 '~ N~R4; Ri is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z~.)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formual (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R~ ~ R3 R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formual (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyrzdazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, RI, R2, R3, R4, R5, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl;
pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~
R~ ~ f23 4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(~)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) v'vherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is Rz R~ ~ R3 N~R4; RI is hydrogen, alkyl, cyario, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~
N \ R3 R
N 4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, RZ, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IJ wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is N ~ R3 I
~~N R4; R2, R3, and R~ are hydrogen; Z is N; --- is absent; D is -CHZ-; L is -N(R~)C(O)-and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloallcyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is N ~ R3 I
'~~N R4; RZ, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CH(CH3)-; L
is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is / ~~R3. . .
Z is N; --- is absent; L is -N(R~)C(O) ; and D, X, Y, R2, R3, R~, and RA are as defined in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is RZ , ~~R
3; RZ and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is N; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; and R6, R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is '~~Rs.
~'' Y , RZ and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R6, R7 and RA are as defined in formula (I).
In another embodiment; the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle; B is Rz R1 ~ R3 R
4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, R1, RZ, R3, R4, R~ and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ R3 N R4; Z is N; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~, Rz, R3, R4, R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl .wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ R3 R
4; Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R1, Ra, R3, R4, R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R1 ~ R3 ~R
~'' N 4; RI is the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z~.)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy;
Z is N; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R2 .
R1 ~ R3 R
J 4; R1 is the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Zø)alkyl, or (NZ3Zø)carbonyl; RZ and Ra are hydrogen; R3 is hydrogen or hydroxy;
Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) .wherein A is cycloalkyl; B is RZ
R1 ~ R3 R
4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, R1, R2, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R1 ~ Rs '2'~ N R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Zd)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(Q)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ R3 ~R
4; Ri is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Zø)alkyl, or (NZ3Z4)carbonyl; Rz and R~. are hydrogen; R3 is hydrogen or hydroxy; Z is N; --- is absent; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is arylalkyl; B is R~ w Rs R
4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, Rl, R2, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZ2; B is R~
R~ ~ Rs ~R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituerits independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZ2; B is R~ \ R3 , '~ N~R4~ a alk 1 c ano haloal 1 halo en nitro ~TZ Z al 1 or Rl is hydrog n, Y , Y , kY , g , , \1'' 3 4) (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ ~ R3 R5 ; Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, Rl, RZ, R3, Rd, R5, R~, RB, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZiZ2; B is R~ w .Rs R5 ; RI is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is CRB; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; RB
is hydrogen; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZiZz; B is RZ
R~ ~ R3 R

R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and Rs are hydrogen; Z is CRB; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; RB
is halogen wherein a preferred halogen is -F; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, ~haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or-NZIZZ; B is R~
R1 w Rs ~ R4 Rs ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -i NZ1Z2, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is CRB; --- is absent; D is -CH(CH3)-; L
is -N(R~)C(O)-; RB is hydrogen; and R7 and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~
R~ ~ R3 R
4; Z is CRB; --- is absent; L is -N(R~)C(O)-; RB is hydrogen; and D, R1, RZ, R3, R4, R~, and RA are as defined in formula (I) In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I)~wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZiZ2; B is R~ \ R3 R ' '~ N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Zø)carbonyl; RZ and Ra. are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
--- is absent;
D is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ . R3 'a'7 N R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHZ-; L is -N(R~)C(S)-; RB is hydrogen; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R~
R~ ~ R3 '~ N~Ra R, is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHz-; L is -N(R~)C(S)-; RB is hydrogen; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R1 \ R3 R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z~)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CH(CH3)-; L is -N(R~)C(O)-; RB is hydrogen; and R~, RB, and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl; pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is RZ
R~ ~ R3 R
4; Z is CRB; --- is absent; L is -N(R~)C(O)-; RB is hydrogen; and D, R1, R2, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R~ ~ R3 / R
4; R~ is hydrogen, alkyl, cyano; haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to. the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the,heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ \ R3 'T~ N~R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and Rø are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHZ-L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~
X
''~R3. ~ and D X Y R R
'~ Y , Z is CRB; --- is absent; L 1s -N(R~)C(O)-; RB is hydrogen, , , , z~
R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A.is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Z2; B is ~~Rs. _ _ 'L'~ Y , X is N(R6), O, or S; Y is N; R2 and R3 are hydrogen; Z is CRB; - - is absent; D
is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R6, R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is '~ Y ; X is N(R6), O, or S; Y is N; R2 and R3 are hydrogen; Z is CRB; --- is absent; D
is -CH(CH3)-; L is -N(R~)C(O)-; RB is hydrogen; and Rb, R~ and RA are as defined in formula (I). .
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is 4; Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, RZ, R3, R4, R~, RB, and RA.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, .alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is Ra 4; Z is CRB; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; RZ, R3, and R4 are hydrogen; RB is hydrogen; and R~ and RA are as defined in formula (I).
In.another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, allcoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is , Rz Rs 4; Z is CRB; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; Rz, R3, and R~
are hydrogen; RB is hydrogen; and R~ and RA are as defined in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ w R3 R
N+ a 0- ; Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, RI, R2, R3, R4, R~, RB, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~
R~ y R3 N+
Rl, Rz, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHz-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyh methylenedioxy, nitro, phenyl, or -NZIZz; B is R~ ~ Rs Ra N+
- ; Rl, R2, R~, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHz-; L is -N(R~)C(O)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent; B is R~ ~ R3 '~ I N~R4 O - ; Rl, R2, R3, and R~. are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent; B is R~
R~ ~ Rs N~R4 0 - ; Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; R~ is alkyl wherein methyl is preferred; and RA is hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independerxtly selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Z2; B is Rz R~ ~ R3 =~ N~R4 - ; RI, RZ, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R1 \ R3 N+ R4 ~- ; RI, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is N(R~)C(O)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ R3 N+ R4 O - ; Z is CRB; RB is hydrogen; --- is absent; L is -N(R~)C(O)-; and D, Rl, R~, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein.A. is heterocycle wherein the heterocycle is benzirnidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ R3 + R4 - ; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R7 and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is \ R3 :~ I N~R4 Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl; B is R~
R1 ~ R3 N~R4.
Z 1s CRB; - - is absent; L is -N(R~)C(Q)-; and D, Rl, R~, R3, R4, R~, RB, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ R3 R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is -absent; D is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz R~ ~ R3 . .
~'' N R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is Rz R~ ~ Rs R

R5 ; Z is C; --- is a bond; L is -N(R~)C(O)-; and D, R1, Rz, R3, R4, R5, R~, and RA
are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is Rz R~ ~ Rs R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, NZ1Z2, or (NZ3Z4)alkyl; Rz is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; Rø and RS are hydrogen; Z is C; --- is a bond; D is -CHz-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyh alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, ~methylenedioxy, nitro, phenyl, or -NZIZ2; B is .

R~ ~ R3 R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, vitro, - I
NZ1Z2, or (NZ3Z4)alkyl; R2 is hydrogen, alkoxy, cyano, halogen, or hydroxy;
R3'is hydrogen or hydroxy; R4 and RS are hydrogen; Z is C; --- is a bond; D is -CH(CH3)-; L
is -N(R~)C(O)-;
and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is .
R~
R~ ~ R3 R
'~'l N~ 4; Z is G; --- is a bond; L is -N(R~)C(O)-; and D, R1, RZ,R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is R~ w Rs R~; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHI-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is RZ
R~ ~ R3 ~ R
4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Ra and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is Rz R~ ~ Rs ~R
4Z is C; --- is a bond; L is -N(R~)C(O)-; and D, Rl, Ra, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzirnidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~
R~ ~ R3 I
R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R4; Rt is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z~)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is '2'> Y , Z is C, --- is a bond, L is -N(R~)C(O)-, and D, X, Y, R~, R3, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is -~5 Y
3; X is N(R6), O, or S; Y is C(R4); RZ and R3 are hydrogen; R4 is hydrogen, alkyl, or cyano; Z is C; --- is a bond; D is -CHI-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is Rz ~~R3 X is N(R6), O, or S; Y is C(R4); Rz and R3 are hydrogen; R4 is hydrogen, alkyl, or cyano; Z is C; --- is a bond; D is -CH(CH3)-; L is -N(R~)C(O)-; and R6, R~
and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl; B is Rz R~ ~ R3 I
R
~; Z is C; --- is a bond; L is -N(R~)C(O)-; and D, R1, Ra, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz R~ w Rs I R , ~,'7 N~ 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHz-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz .
R~ ~ R3 R
~; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is~ C; --- is a bond; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (I).

In another embodiment, the present invention~relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ ~ R3 Z is N; --- is absent; L is -C(O)N(R~)-; and D, RI, R2, R3, R4, R5, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or S substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZa; B is R1 \ R3 =i., ~ ~ R4 R5 ; RI is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, vitro, -NZ1Z2, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is N; --- is absent; D is -CHz-; L is -C(0)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is R~ ~ R3 Ra Rs ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, vitro, -NZ1Z2, or (NZ3Z4)alkyl; R2 is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is N; --- is absent; D is -CH(CH3)-; L
is -C(O)N(R~)-;
and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein.A is aryl; B is 4; Z is N; --- is absent; L is -C(O)N(R~)-; and D, RI, RZ, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy~ nitro, phenyl, or -NZ1Z2; B is .
R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is ~ R3 4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZiZz; B is R~ ~ R3 N ~R4 v R is h dro en alk 1 c ano haloalk 1 halo en nitro Z Z
i Y g ~ Y ~ Y ~ Y ~ g > > (N s a.)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHzGHz-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is Rz N \ R3 s(R
N 4; Z is N; --- is absent; L is -C O N R -~ and D R R
( ) ( ~) , , z, 3~ R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is Rz N w . Rs R
N 4; Rz, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CHz-; L is -C(O)N(R~)-and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3., 4, or 5 substituents independently selected from alkenyl;
alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloallcyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is Rs R
4; Ra, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl; B is R~ ~ R3 N ~ R4 v Z is N' --- is absent L is -C O N R~ -~ and D R R R ~~ R and R are ~ ( ) ( ) ~ s 1~ 2~ 3~ R4~ 7~ A
as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~
Ri ~ R3 R
N~ 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined as in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~
R~ ~ R3 ~R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined as in formula (I).

In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~
R~ ~ R3 R

R5 ; Z is CRB; RB is hydrogen; ---'is absent; L is -C(O)N(R~)-; and D, R1, RZ, R3, R4, R5, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ R3 R5 ; R1 is hydrogen, alkoxy, allcyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZIZz, or (NZ3Z4)alkyl; Rz is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a, therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZa; B is R1 \ R3 Ra R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZIZa, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D
is -CH(CH3)-;
L is -C(O)N(R~)-; and R~ and.,RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is Rz R~ ~ R3 ~ R
4; Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, R1, R2, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl,.or -NZIZZ; B is Rz R~ ~ R3 R
N~ 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHa-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or S substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is Rz R~ ~ R3 ~R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is Rs N\ ~R
N 4; Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, Rz, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alken'yl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Z2; B is ~N\N~R
4; R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHa-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is N, ~ ~ R
N 4; R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ ~ Rs .
N+ Ra Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, RI, R2, R3, Ra, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZ~; B is R~
R~ W R3 N+ a - ; RI, R2, R3, and Rd are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZa; B is R~ ~ Rs N+ Ra o - ; Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHa-; L, is -C('O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent; B is R~
R~ ~ R3 N+ R4 0 - ; Rl, Rz, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CH2-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent wherein a preferred alkyl substituent is methyl; B is R~ ~ Rs ~'' N+ R~
- ; RI, Ra, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent wherein a preferred alkyl substituent is methyl; B is Rz ,.
R~ ~ R3 '~' N+ R4 - ; Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -C(S)N(R~)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is RZ
=~, N~R4 Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent wherein a preferred alkyl substituent is methyl; B is RZ
N~Ft4 R1, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is RZ
N~R4 Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, RI, R2, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R1 ~ R3 ~, N+ R4 , 0 - ; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Zø)alkyl, or (NZ3Zø)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHa-; L is -C(O)N(R~)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual ' dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is '~ N+ R4 - ; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Zd)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined on formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl; B is N~R4; Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, RI, RZ, R3, R4, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal ,a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is RZ
R~ ~ R3 ~R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is RZ
R1 \ R3 R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is RZ
R1 \ R3 R5 ; Z is C; --- is a bond; L is -C(O)N(R~)-; and D, R1, R2, R3, R4, R5, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ,Z2; B is R1 ~ Rs R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy; nitro, -NZ1Z2, or (NZ3Z4)alkyl; Rz is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is C; --- is a bond; D is -CHZ-; L is -C(O)N(R~)-; and R~ and~RA are as defined in formula (I).
In another embodiment, the present invention relates to a. method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is R~ w R3 ~ R4 R5 ; R1 is hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1ZZ, or (NZ3Z4)alkyl; RZ is hydrogen, alkoxy, cyano, halogen, or hydroxy; R3 is hydrogen or hydroxy; R4 and RS are hydrogen; Z is C; --- is a bond; D is -CH(CH3)-; L
is -C(O)N(R~)-;
and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is Rj ~ R3 R
4; Z is C; --- is a bond; L is -C(O)N(R~)-; and D, RI, RZ, R3, R~, R~, and RA
are as defined in formula (I):.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloallcyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is ~ Rs N , 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and Rø are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is ~' N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZZ; B is ~' N R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Zd)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH2-;. L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I):
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mamlxlal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is 'i'~ N R4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl; B is R~ , Z is C; --- is a bond; L is -C(O)N(R~)-; and D, X, Y, R2, R3, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloallcyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is /~2 X
Z is C' --- is a bond' D is RZ and R3 are hydrogen; X is N(R6), O, or S; Y is N, , , -CHZ-; L is -C(O)N(R~)-; and R6, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is ~~R
'L'' Y 3; R2 and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is C; --- is a bond; D is -CH(CH3)-; L is -C(O)N(R~)-; and R6, R~, and RA are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl; B is R~ '~ R3 s R
4; Z is C; --- is a bond; L is -C(O)N(R~)-; and D, Rl, R2, R3, R4, R~, and RA
are as defined in formula (I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is RZ
R~ ~ R3 N~R4~ R ish dro en al 1 c ano haloal 1 halo en nitro Z Z al 1 or i Y g ~ k3'~ Y ~ k3'~ g > >~ 3 a) kf~
(NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula .(I).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ R3 ~ R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Zd)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (I).
In another embodiment, the present invention relates to compounds of formula (II) Z~B
A~L~D~N~.\J
RA
(II) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof; are disclosed wherein A is aryl, arylalkyl, cycloalkyl, or cycloalkylalkyl;
L is -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or -C(S)N(R~)- wherein the left end of the -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-,and -C(S)N(R~)- is attached to A and the right end is attached to D;
D is alkylene, fluoroalkylene, or hydroxyalkylene;
Z is selected from N, C or CRB;
RA is hydrogen or alkyl;
RB is hydrogen, alkyl, or halogen;
--- is a bond when Z is C and --- is absent when Z is N or CRB;
B is Rz .
Rz R~ ~ Rs Rz R~ ~ Rs ~ ~ N ~ Rs N+ R4 ~ ~ R
-~,, N Ra ~ O - ~ =~ N a R
R~ N\ R3 R1 Rz o \ R3 ~ Rz J-R .N~R3 -N. ~ R ~ ~~R3 .
-~, N a ~ ~ N , ~ N 4 , , or ~ Y , Rl, R2, R3, and R4 are each independently hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, or (NZ3Z4)sulfonyl;
ZI and Zz are each independently hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, or formyl;
Z3 and Z4 are each independently hydrogen, alkyl, aryl, or arylalkyl;
X is N(R6), O, or S;
Y is C(R4) or N;
R6 is hydrogen or alkyl; and R~ is hydrogen or alkyl.

In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~ ~ R3 N~R4 ~ Z is N' --- is absent' L is -N R C O -~ and D R R R ~~ R an are o ~ ( 7) ( ) o o l0 2s 3i ~e 7i d RA
as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is R~ \ R3 R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH2-; L is -N(R~)C(O)-; and R~ arid RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ w R3 R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3, is hydrogen or hydroxy; R3 is hydrogen or hydroxy; Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is 4~

Rz , v R~ w R3 ~R
4; Rl is selected from hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is RZ
R1 \ R3 ~~ N ~ R4 ~ en al 1 c a al al Rl is hydrog , ky , y no, h oalkyl, h ogen, intro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(S)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R~
R~ ~ Rs R~; R1 is selected from hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, .
(NZ3Z~)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl; or nitro; B is R~ \ R3 .
'~, I N~R4. _ Z is N; - - is absent; L is -N(R~)C(O)-; and D, Rl, R2, R3, R4, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano,'halogen, haloalkoxy, haloalkyl, or nitro; B is R~
R~ ~ R3 N R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzirnidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ R3 '''r N R4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is I
R4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, Ra, R3, R4, R~, and RA are as defined in formula (II). .

In another embodiment of the present invention, compounds of formula (II7 are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is N \ R3 ~' ' N R4; RZ, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CHZ-; L
is -N(R~)C(O)-R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or S
substituents~ independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is Ft2 .
''~ N R4; RZ, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CH(CH3)-;
L is -N(R~)C(O)-; R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R2 .
. .
3; Z is N; --- is absent; L is -N(R~)C(O)-; and D, X, Y, R2, R3, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -N~IZZ; B is R2 and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is N; --- is absent; D
is -CH2-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy~ nitro, phenyl, or -NZ1Z2; B is R2 -.
~~ R3 'z'7 Y ; RZ and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is N; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is R~
R~ \ R3 ~ R
4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, R1, Rz, R3, R4, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is RZ
R~ w Rs ~R , ~; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ R3 R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and Rd are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is arylalkyl; B is RZ
R~ w Rs ~R
4; Z is N; --- is absent; L is -N(R~)C(O)-; and D, RI, RZ, R3, R4, R7, and RA
are as defined in formula (II).
52.

In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or S substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, rnethylenedioxy, vitro, phenyl, or -NZ1Z2; B is R~ ~ R3 I R
4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and Rø are hydrogen; 8315 hydrogen or hydroxy; Z is N; ---is absent; D
is -CHI-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is R2 .
R1 \ R3 R
~; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is >CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R2 .
R~ ~ R3 R4; Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, R1, R2, R3, R4, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is R2 , , -R~ ~ R3 R4; Ri is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZz; B is R~ w Rs ~ R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z
is CRB; RB is hydrogen; --- is absent; D is -CHZ-; L is -N(R~)C(S)-; and R~
and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; ,B is R~
R~ ~ R3 N~R4~ ro en al 1 c ano haloal 1 halo en vitro Z Z a 1 or Rl is hyd g , ky , Y , ky ~ g ~ a ~ 3 4) ~ ~
(NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R~ ~ Rs R4; Z is CRB; --- is absent; L is -N(R~)C(O)-; RB is hydrogen; and D, R1, R2, R3, R4, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is RZ
R~ ~ R3 R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro; (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ Rs / R
4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB; --- is absent;
D is -CHz-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~
/ ~~R3. .
Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, X, Y, R2, R3, R~, RB, and RA
are as defined in formula (II).

In another embodiment of the present invention, compounds of formula (I>7 are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is Ra ~~R3.
-~ Y , X is N(R6), O, or S, Y is N; Rz and R3 are hydrogen; Z is CRB, RB is hydrogen, --- is absent; D is -CHz-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (II)~
In another embodiment of the present invention, compounds of formula (II) are disclosed whexein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is ~~R3 'L'? Y ; X is N(R~), O, or S; Y is N; Rz and R3 are hydrogen; Z is CRB; RB is hydrogen;
--- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R6~ R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is Rs -~;N'N
R4;' Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, Rz, R3, R4, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro~ phenyl, or -NZIZz; B is N, ~R
4; Z is CRB; RB is hydrogen; --- is absent; D is -CHz-; L is -N(R~)C(O)-; Rz, R3, and R4 are hydrogen; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is R~
p \ R3 N, ~ R .
N 4; Z is CRB; RB is hydrogen; --- is absent; D is =CH(CH3)-; L is -N(R~)C(O)-; R2, R3, and R4 are hydrogen; and R' and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R1 \ R3 N~R~
0- ; Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, RI, R~, R3, R~, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Zz; B is R~
R~ w Rs N+
- ; RI, RZ, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methyleriedioxy, nitro, phenyl, or -NZ1Z2; B is Rz R~ ~ R3 R
=~' N + 4 - ; RI, R2, R3, and Rø are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are hydrogen.

In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent; B
is RZ
R~ ~ R3 R
=~ N+ 4 - ; Ri, RZ, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHz-; L is -N(R~)C(O)-; and R~ and RA are hydrogen.
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is R~ ~ R3 R
N+ 4 O- ; RI, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is tetrahydronaphthalenyl or 2,3-dihydro-1H-indenyl; B is R2 , ~ R3 '~ N+ . R4 - ; Rl, RZ, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -N(R~)C(O)-; and R~ and RA are hydrogen.
In another embodiment of the present invention, compounds of formula (II) are, disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R~ ~ R3 N+ Ra - ; Z is CRB; RB is hydrogen; --- is absent; L is -N(R~)C(O)-; and D, Ri, R2, R3, R4, R~, and Rp are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R1 w Rs 'r'~ N~R4 i - ; Rt is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently ..
substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is RZ
R~ ~ R3 N+ R4 O - ; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHz-; L is -N(R~)C(O)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is RZ .
R1 \ R3 N~R4_ Z is CRB; --- is absent; L is -N(R~)C(O)-; and D, R~, R2, R3, Rd, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz R~ ~ R3 N~R4.
Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 15 hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are .
disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R1 \ R3 ~R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~
R~ ~ R3 ~R
~'' N 4; Z is C; --- is a bond; L is -N(R~)C(O)-; and D, RI, R2, R3, R4, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substitllents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is Rz R~ ~ Rs ' R
=~' N 4; RI is hydrogen, alkyl, cyano, halolalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R~ are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ1Z2; B is Rz R~ ~ Rs ' R
N 4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is Rz R~ ~ Rs ' R
N 4; Z is C; --- is a bond; L is -N(R~)C(O)-; RB is hydrogen; and D, R1, R2, R3, R4, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R~ ~ Rs ' R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is R~ ~ Rs ' R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -N(R~)C(O)-; RB is hydrogen; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is ~~R3 '~ Y ; Z is C; --- is a bond; L is -N(R~)C(O)-; and D, X, Y, R2, R3, R~, and RA are as defined informula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or S
substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or-NZ~Z2; B is Ra ~~R3.
'~'~ Y , X is N(R6), O, or S, Y is C(R4); R2 and R3 are hydrogen; R4 is hydrogen, alkyl, or cyano; Z is C; --- is a bond; D is -CHZ-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZz; B is ~~R3 '~'' Y ; X is N(Rg), O, or S; Y is C(R4); R2 and R3 are hydrogen; R4 is hydrogen, alkyl, or cyano; Z is C; --- is a bond; D is -CH(CH3)-; L is -N(R~)C(O)-; and R6, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is R~ ~ Rs ~ R
4; Z is C; --- is a bond; L is -N(R~)C(O)-; and D, RI, R2, R3, R4, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ Rs ~ R
4; R~ is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH2-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ Rs ~ R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and Rø are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -N(R~)C(O)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~
R1 ~ R3 I ' R
4; Z is N; --- is absent; L is -C(O)N(R~)-; and D, Rl, R2, R3, R4, R~, and R,~
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZZ; B is R1 ~ Rs I ' R
4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is R~
R1 ~ Rs R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R1 ~ Rs R
'2'7 N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH2CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).

In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is N w Rs R
N 4; Z is N; --- is absent; L is -C(O)N(R~)-; and D, R2, R3, R4, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is N ~ Rs R
N 4; R2, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CHZ-; L is -C(O)N(R~)-and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is N w R3 R
N 4; R2, R3, and R4 are hydrogen; Z is N; --- is absent; D is -CH(CH3)-; L is C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is R~
R~ ~ Rs R
N 4; Z is N; --- is absent; L is -C(O)N(R~)-; and D, R1, R2, R3, R~, R~, and R~ are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz R~ ~ Ra ~ R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CHz-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is Rz R~ ~ Rs ~ R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is N; ---is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is Rz R~ ~ Rs ~ R
4; Z is CRB; --- is absent; L is -C(O)N(R~)-; and D, R~, Rz, R3, R4, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZz; B is Rz R~ ~ Rs R4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHz-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ~Zz; B is Rt ~ Rs ~' N R4; RI is hydrogen, al 1, cyano, haloal 1, halo en nitro Z Z al 1 or g s s ~ 3 4) ~ s (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is Ra O ~ R3 N. ~ R
N 4; Z is CRB; --- is absent; L is -C(O)N(R~)-; and D, RZ, R3, R4, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is O ~ R3 N, > R
N 4; R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D
is -CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is O \ R3 N. ~ R
N 4; R~, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~ ~ Rs '~ N+ Ra Z is CRB; --- is absent; L is -C(O)N(R~)-; and D, Rl, Rz, R3, Rq, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZiZz; B is R~ ~ Rs '~ N+ R4 - ; Rl, Rz, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHz-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, v benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Zz; B is R~ ~ Rs '~ N+ Ra - ; Rl, Rz, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHz-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent; B
is R2 i R~ ~ Rs '~ N+ R4 Rl, Rz, R3, and Rq are hydrogen; Z is CRB; RB is hydrogen; --- is absent; D is -CHz-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.

In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent wherein a preferred alkyl substituent is methyl; B is R~ ~ Rs N+ R4 - ; Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHa-; L is -C(O)N(R~)-; and R~ and RA are hydrogen.
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 1 alkyl substituent wherein a preferred alkyl substituent is methyl; B is Rz R~ ~ Rs '~ N+ Ra - ; Rl, R2, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CHZ-; L is -C(S)N(R~)-; and R~ and RA are hydrogen.
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, allcyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs :~ N+ Ra 0- ; Rl, RZ, R3, and R4 are hydrogen; Z is CRB; RB is hydrogen; --- is absent;
D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ Ra N+ R4 - ; Z is CRB; RB is hydrogen; --- is absent; L is -C(O)N(R~)-; and D, R~, R2, R3, R4, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~ ~ Rs N+ R4 - ; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is Rz R~ ~ Rs '~ N+ R4 - ; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Ra and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined on formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is R~ ~ Rs I , R
4; Z is CRB; --- is absent; L is -C(O)N(R~)-; and D, Rl, RZ, R3, R4, R~, RB, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ R3 R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ Rs I R
~; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is CRB;
RB is hydrogen; --- is absent; D is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl; B is R~
R~ ~ Rs R
4; Z is C; --- is a bond; L is -C(O)N(R~)-; and D, R1, R2, R3, R4, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZa; B is R~ w Rs R4; R~ is hydrogen, alkyl; cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZIZ2; B is R~ ~ Rs N R4 ; R1 is hydrogen, alkyl, cyano, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; RZ, R3, and R4 are hydrogen; Z is C; --- is a bond; D is -CH2-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, vitro, phenyl, or -NZ~Z2; B is R~ ~ Rs N R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and Ra. are hydrogen; R3 is hydrogen or hydroxy; Z is C; --- is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).

In another embodiment of the present invention, compounds of formula (I17 are disclosed wherein A is aryl; B is . ~~Rs.
Z is C; --- is a bond; L is -C(O)N(R~)-; and D, X, Y, RZ, R3, R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is ~~R3 . -'~'~ Y , RZ and R3 are hydrogen; X is N(Rg), O, or S; Y is N; Z is C; - - is a bond; D is -CH2-; L is -C(O)N(R~)-; and R6, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~
''~R3 . _ 't'~ ~' , RZ and R3 are hydrogen; X is N(R6), O, or S; Y is N; Z is C; - - is a bond; D is -CH(CH3)-; L is -C(O)N(R~)-; and Rs, R~, and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl; B is R~ w Rs ~ R
4; Z is C; --- is a bond; L is -C(O)N(R~)-; and D, R1, R2, R3, R4, R~, and RA
are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~
R~ ~ R3 R4; Rl is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or N
(NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; ---is a bond; D
is -CHZ-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment of the present invention, compounds of formula (II) are disclosed wherein A is cycloalkyl wherein the cycloalkyl is cyclohexyl or adamantyl; B is R~ ~ Rs 'r'~ I N~R4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or I (NZ3Z4)carbonyl; RZ and R4 are hydrogen; R3 is hydrogen or hydroxy; Z is C; --- is a bond; D
is -CH(CH3)-; L is -C(O)N(R~)-; and R~ and RA are as defined in formula (II).
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable tamer.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.

In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1- f [(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-([(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a male human comprising administering to the male human in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable earner.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a male human comprising administering to the male human in need of such treatment a therapeutically effective amount of 2-(1- f [(3-methylbenzoyl)amino]methyl-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase S inhibitor.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl)-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl)-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating a disorder wherein the disorder is cardiovascular disorders, inflammatory disorders, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, schizophrenia, anxiety, mood disorders or depression in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
In another embodiment, the present invention relates to method of treating a disorder wherein the disorder is cardiovascular disorders, inflammatory disorders, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, schizophrenia, anxiety, mood disorders or depression in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
In another embodiment, the present invention relates to compounds of formula (III) B
L~
X2 X~
A~L.D.N~\J
RA
(III) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein X, is a bond or CRBR~;
X2 is a bond or CRDRE;
provided that when Xi is a bond, then X2 is CRDRE;
further provided that when X2 is bond, then Xl is CRBRo;
A is aryl, arylalkyl, cycloalkyl, or cycloalkylalkyl;
L~ is -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or -C(S)N(R~)- wherein the left end of the -N(R~)C(O)-, -C(O)N(R~)-, -N(R7)C(S)-, and -C(S)N(R~)- is attached to A
and the right end is attached to D;
L2 is a bond or alkylene;
D is alkylene, fluoroalkylene, or hydroxyalkylene;
RA, RB, R~, RD, and RE are independently hydrogen or alkyl;
B is 7~

R~ R3 R2 R~ ~ R3 R2 '~ ~ i R R~ ~ w Rs ~ ~ N+ R4 N

R ~ ~ N~R4 ~ O- ~ =~a,~N R4 R~ N~ R3 R1 Z O w R X
.N~R .N, ~ R ~ ~~R3 .
=~~N~Ra ~ ~., N 3 ~ ~ N 4 ~ or ~ Y
Ri, R2, R3, and R4 are each independently hydrogen, alkoxy, alkenyl, alkyl, alkylsulfnyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, rnercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, or (NZ3Z4)sulfonyl;
ZI and ZZ are each independently hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, or formyl;
Z3 and Z4 are each independently hydrogen, alkyl, aryl, or arylalkyl;
X is N(R6), O, or S;
Y is C(R4) or N;
R6 is hydrogen or alkyl; and R~ is hydrogen or alkyl.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl; B is R~
R~ w Rs R4; X1 is CRBRC; XZ is CRoRE; L is -N(R~)C(O)-; and L2, D, R1, R2, R3, R4, R~, ~, N
RA, RB, R~, RD, and RE are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents indpendently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~ZZ; B is R~ ~ Rs R
~ 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R~ is hydrogen or hydroxy; Xl is CRBRc; XZ is CRDRE; D is -CH2-; L2 is a bond; and L is -N(R~)C(O)-; and RA, RB, Rc, RD, RE, Rl, R2, R3, R4, and R~ are as defined in formula (III)..
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs I R4 ; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or N
(NZ3Z4)carbonyl; Ra and R4 are hydrogen; R3 is hydrogen or hydroxy; Xl is CRBRc; XZ is CRDRE; D is -CHZ-; LZ is a bond; and L is -N(R~)C(O)-; and RA, RB, Rc, RD, RE, and R~ are hydrogen.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle; B is X
. ''~Rs . O -~ and D L X Y, RA, RB, Ro, RD, Y , Xl is CRBRc; X2 is CRDRE; L is -N(R~)C( ) , , z> >
RE, R2, R3, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is X

Y ; R2 and R3 are hydrogen; X1 is CRBRo; X2 is CRDRE; X is N(R6), O, or S; Y
is N; D is -CH2-; LZ is a bond; L is -N(R~)C(O)-; and RA, RB, Rc, RD, RE, R2, R3, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
~0 In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle wherein the heterocycle is benzimidazolyl substituted with 1 alkyl substitutuent wherein a preferred alkyl substituent is methyl; B is ''~R3.
R2 and R3 are hydrogen; X~ is CRBRo, XZ is CRDRE, X is N(R6), 0, or S; Y is N; D is -CHZ-; L2 is a bond; L is -N(R~)C(O)-; and RA, RB, RC, RD, RE, R2, R3, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl; B is R~ ~ Rs / R
4; X~ is a bond; X2 is CRDRE; L is -N(R~)C(O)-; and L2, D, R1, RZ, R3, R4, R~, RA, RB, Ro, RD, and RE are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~ZZ; B is Rz R~ ~ Rs ~ R
4; RI is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 1S hydrogen or hydroxy; Xl is a bond; XZ is CRDRE; D is -CHZ-; L~, is a bond; L is -N(R~)C(O)-; and R~, RA, RD, and RE are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZ2; B is R~ ~ Rs R
't'7 N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, vitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; Rz and R4 are hydrogen; R3 is hydrogen or hydroxy; Xl is a bond; Xa is CRDRE; D is -CHZ-; L2 is a bond; L is -N(R~)C(O)-; and R~, RA, RD, and RE are hydrogen.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle; B is X
'~~R3. X Y R R R R
'~ Y , Xl is a bond; X2 is CRDRE; L is -N(R7)C(O)-; and D, L2, , , A, n, E~ z~
R3, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or vitro; B is X
''~Rs .
RZ and R3 are hydrogen; Xl is a bond; XZ is CRDRE; X is N(R6), O, or S; Y is N; D is -CH2-; LZ is a bond; L is -N(R~)C(O)-; and R6, RA, RD, RE, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is heterocycle wherein the heterocycle is benzimidazolyl substituted with 1 alkyl substitutuent wherein a preferred alkyl substituent is methyl; B is Rz X
~~R3 RZ and R3 are hydrogen; Xl is a bond; XZ is CRDRE; X is N(R6), O, or S; Y is N; D is -CHZ-; LZ is a bond; L is -N(R~)C(O)-; and RA, RD, RE, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl; B is ~2 ''~R3 . _ Xl is a bond; X2 is CRDRE; L is -N(R~)C(O) ; and D, LZ, X, Y, RA, RD, RE, RZ, R3, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is '~~Rs .
'~ Y , RZ and R3 are hydrogen; XI is a bond; XZ is CRDRE; X is N(R6), O, or S;
Y is C(R4); D is -CHZ-; L~ is a bond; L is -N(R~)C(O)-; R4 is hydrogen, alkyl, or cyano; and R6, RA, RD, RE, R4, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~
~~R3 .
'~'r Y , RZ and R3 are hydrogen; Xl is a bond; X2 is CRDRE; X is N(R6), O, or S; Y is C(R4); D is -CHZ-; L2 is a bond; L is -N(R~)C(O)-; R4 is hydrogen, alkyl, or cyano; RA, RD, RE, R4, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl; B is R~ ~ Rs ~ R4 X1 is CRBR~; XZ is a bond; L is -N(R~)C(O)-; and L2, D, Rl, Rz, R3, R.~, Rs, R~, RA, RB, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZiZ2; B is Rz R~ w R3 Rs ; Rl, R2, R3, R4, and RS are hydrogen; X1 is CRBR~; Xa is a bond; D is -CHa-;
LZ is -CHZ-; L is -N(R~)C(O)-; and RB, RC, and R~ are as defined in formula (III).
In another embodiment, the present invention relates to compounds of formula (III) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ~Z2; B is R~ ~ Rs ~ R4 Rs ; RI, R2, R3, R4, and RS are hydrogen; X1 is CRBR~; X2 is a bond; D is -CHZ-;
LZ is -CHZ-; L is -N(R~)C(O)-; and RB, RC, and R~ are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to said mammal in need of such treatment a therapeutically effective amount of a compound of formula (I~

X~X~
A~L.D~N~\J
RA
or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein Xl is a bond or CRBRC;
XZ is a bond or CRDRE;
provided that when Xl is a bond, then Xz is CRDRE;
further provided that when X2 is bond, then X~ is CRBRC;
A is aryl, arylalkyl, cycloalkyl, or cycloalkylalkyl;
Ll is -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, or -C(S)N(R~)- wherein the left end of the -N(R~)C(O)-, -C(O)N(R~)-, -N(R~)C(S)-, and -C(S)N(R~)- is attached to A
and the right end is attached to D;
LZ is a bond or alkylene;

D is alkylene, fluoroalkylene, or hydroxyalkylene;
RA, RB, R~, RD, and RE are independently hydrogen or alkyl;
B is Rz R2 R~ w Rs Rz R~ w Ra Rz R~ ~ R3 ~ ~ N ~ Rs ~ R4 I '~ N + R4 ~ ~ R
R5 , :~ N~R4 , O- ~ ='t, N a Rz R
R z R~ N\ R3 R~ z O ~ Rs ,N~R3 -N. ~ R4 or ,~,'~Y Rs N Ra ~ ~, N ~ ~ N
Rl, R2, R3, and R4 are each independently hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZIZ2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, or (NZ3Z4)sulfonyl;
Zl and Zz are each independently hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, or formyl;
Z3 and Z4 are each independently hydrogen, alkyl, aryl, or arylalkyl;
X is N(R6), O, or S;
Y is C(R4) or N;
R6 is hydrogen or alkyl; and R~ is hydrogen or alkyl.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl; B is Rz R~ ~ Rs Ra -~ and LZ, D, Rl, R2, R3, R4, R~, '~'7 N ; Xl is CRBRo; Xz is CRDRE; L is -N(R~)C(O) , RA, RB, R~, RD, and RE are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl ~5 substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or NZ1Z2; B is R~ ~ Ra R
't'7 N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; X~ is CRBR~; X2 is CRDRE; D is -CH2-; LZ is a bond; L is -N(R~)C(O)-; and R~, RA, RB, RG, RD, and RE are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; X~ is CRBRe; X2 is CRDRE; D is -CH2-; LZ is a bond; L is -N(R~)C(O)-; and R~, RA, RB, RC, RD, and RE are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle; B is X
''~R3. d D L X Y R R R
Y , Xl 1S CRBRo; X215 CRDRE; L 1S -N(R~)C(O)-; an , 2, , s As Bs Rc~ D
RE, R2, R3, and R~ are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is Rz X
'~~Rs .
~~''~ Y , RZ and R3 are hydrogen; Xl is CRBRo; XZ is CRDRE; X is N(R6), O, or S; Y is N; D is -CHa-; LZ is a bond; L is -N(R~)C(O)-; and R6, RA, RB, Ro, RD, RE, and R~ are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle wherein the heterocycle is benzimidazolyl substituted with 1 alkyl substitutuent wherein a preferred alkyl substituent is methyl; B is X
~~R3 Y ; R2 and R3 are hydrogen; Xl is CRBRC; X2 is CRDRE; X is N(R6), O, or S; Y
is N; D is -CH2-; L2 is a bond; L is -N(R~)C(O)-; and RA, RB, Rc, RD, RE, and R~
are hydrogen;
and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl; B is R1 ~ R3 N R4; X1 is a bond; XZ is CRDRE; L is -N(R~)C(O)-; and LZ, D, R1, R2, R3, R4, R~, RA, RD, and RE are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1ZZ; B is ~7 R~ ~ Rs ' R
4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R~ and R4 are hydrogen; R3 is hydrogen or hydroxy; Xl is a bond; X2 is CRDRE; D is -CHZ-; L2 is a bond; L is -N(R~)C(O)-; and R~, RA, RD, and RE are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs ' R
'~'~ N 4; R1 is hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, or (NZ3Z4)carbonyl; R2 and R4 are hydrogen; R3 is hydrogen or hydroxy; XI is a bond; Xa is CRDRE; D is -CHI,-; LZ is a bond; L is -N(R~)C(O)-; and R~, RA, RD, and RE are hydrogen.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle; B is '~~Rs .
'i'a Y , Xl is a bond; X2 is CRDRE; L is -N(R~)C(O)-; and D, L2, X, Y, RA, RD, RE, RZ, R3, and R~ are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, or thienyl, wherein the heterocycle is substituted with 0, l, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, or nitro; B is R~
~~R3 Y ; RZ and R3 are hydrogen; X~ is a bond; X2 is CRDRE; X is N(R6), O, or S; Y
is N; D is -CHZ-; LZ is a bond; L is -N(R~)C(O)-; and R6, RA, RD, RE, and R~ are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is heterocycle wherein the heterocycle is benzimidazolyl substituted with 1 alkyl substitutuent wherein a preferred alkyl substituent is methyl; B is X
~~R3 'a'~ Y ; R2 and R3 are hydrogen; Xl is a bond; X2 is CRDRE; X is N(R6), O, or S; Y is N; D is -CHZ-; LZ is a bond; L is -N(R~)C(O)-; RA, RD, RE, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl; B is ~~R3 '2'~ Y ; Xl is a bond; Xz is CRDRE; L is -N(R~)C(O)-; and D, L2, X, Y, RA, RD, RE, RZ, R3, and R~ are as defined in formula (IV).
a In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is ~~R3 '~ Y ; R2 and R3 are hydrogen; Xl is a bond; X2 is CRDRE; X is N(R6), O, or S;
Y is C(R4); D is -CHZ-; LZ is a bond; L is -N(R~)C(O)-; R4 is hydrogen, alkyl, or cyano; and R6, RA, RD, RE, and R~ are as defined in formula (IV).
~9 In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~
X
~~R3 '~ Y ; R2 and R3 are hydrogen; Xl is a bond; XZ is CRDRE; X is N(R6), O, or S;
Y is C(R4); D is -CHz-; LZ is a bond; L is -N(R~)C(O)-; R4 is hydrogen, alkyl, or cyano; RA, RD, RE, and R~ are hydrogen; and R6 is hydrogen or alkyl wherein a preferred alkyl is methyl.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl; B is R~ ~ Rs Rs ; X1 is CRBRC; XZ is a bond; L is -N(R~)C(O)-; and L2, D, Rl, R2, R3, R4, Rs, R~, RA, RB, and RC are as defined in formula (IVJ.
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZIZZ; B is R~ ~ Rs R~
Rs ; Rl, RZ, R3, R4, and RS are hydrogen; X1 is CRBRC; XZ is a bond; D is -CH2-;
L2 is -CHa-; L is -N(R~)C(O)-; and RB, Rc, and R~ are as defined in formula (IV).
In another embodiment, the present invention relates to a method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents independently selected from alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, or -NZ1Z2; B is R~ ~ Rs Ra.
R5 ; Rl, R2, R3, R4, and RS are hydrogen; Xl is CRBRc; XZ is a bond; D is -CH2-;
L2 is -CHZ-; L is -N(R~)C(O)-; and RB, R~, and R~ are hydrogen.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IVJ or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a male human comprising administering to the male human in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable Garner.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.

In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating male erectile dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (1V) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable earner.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
In another embodiment, the present invention relates to method of treating female sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodnzg thereof in combination with a dopamine agonist.
In another embodiment, the present invention relates to method of treating a disorder wherein the disorder is cardiovascular disorders, inflammatory disorders, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, schizophrenia, anxiety, mood disorders or depression in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.

Definitions of the present invention As used throughout this specification and the appended claims, the following terms have the following meanings:
The term "alkenyl" as used herein, means a straight or branched chain hydrocarbon containing from 2 to 10 carbons and containing at least one carbon-carbon double bond formed by the removal of two hydrogens. Representative examples of alkenyl include, but are not limited to, ethenyl, 2-propenyl, 2-methyl-2-propenyl, 3-butenyl, 4-pentenyl, 5-hexenyl, 2-heptenyl, 2-methyl-1-heptenyl, and 3-decenyl.
The term "alkoxy" as used herein, means an alkyl group, as defined herein, appended to the parent molecular moiety through an oxygen atom. Representative examples of alkoxy include, but are not limited to, methoxy, ethoxy, propoxy, 2-propoxy, butoxy, tert-butoxy, pentyloxy, and hexyloxy.
The term "alkoxycarbonyl" as used herein, means an alkoxy group, as defined herein, appended to the parent molecular moiety through a carbonyl group, as defined herein.
Representative examples of alkoxycarbonyl include, but are not limited to, methoxycarbonyl, ethoxycarbonyl, and tert-butoxycarbonyl.
The term "alkoxysulfonyl" as used herein, means an alkoxy group, as defined herein, appended appended to the parent molecular moiety through a sulfonyl group, as defined herein. Representative examples of alkoxysulfonyl include, but are not limited to, methoxysulfonyl, ethoxysulfonyl and propoxysulfonyl.
The term "alkyl" as used herein, means a straight or branched chain hydrocarbon containing from 1 to 10 carbon atoms. Representative examples of alkyl include, but are not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tent-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, 3-methylhexyl, 2,2-dimethylpentyl, 2,3-dimethylpentyl, n-heptyl, n-octyl, n-nonyl, and n-decyl.
The term "alkylcarbonyl" as used herein, means an allcyl group, as defined herein, appended to the parent molecular moiety through a carbonyl group, as defined herein.
Representative examples of alkylcarbonyl include, but are not limited to, acetyl, 1-oxopropyl, 2,2-dimethyl-1-oxopropyl, 1-oxobutyl, and 1-oxopentyl.
The term "alkylcarbonyloxy" as used herein, means an alkylcarbonyl group, as defined herein, appended to the parent molecular moiety through an oxygen atom.

Representative examples of alkylcarbonyloxy include, but are not limited to, acetyloxy, ethylcarbonyloxy, and tert-butylcarbonyloxy.
The term "alkylene" means a divalent group derived from a straight or branched chain hydrocarbon of from 1 to 10 carbon atoms. Examples are -CHI,-, -CHZCH2-, -CH(CH3)-, -CH(CHZCH3)-, -CH2CH2CH2-, and -CHZCH2CHaCH2-.
The terns "alkylsulfinyl" as used herein, means an alkyl group, as defined herein, appended to the parent molecular moiety through a sulfinyl group, as defined herein.
Representative examples of alkylsulfinyl include, but are not limited to, methylsulfinyl and ethylsulfmyl.
The term "alkylsulfonyl" as used herein, means an alkyl group, as defined herein, appended to the parent molecular moiety through a sulfonyl group, as defined herein.
Representative examples of alkylsulfonyl include, but are not limited to, methylsulfonyl and ethylsulfonyl.
The term "alkylthio" as used herein, means an alkyl group, as defined herein, appended to the parent molecular moiety through a sulfur atom. Representative examples of alkylthio include, but are not limited, methylsulfanyl, ethylsulfanyl, tert-butylsulfanyl, and hexylsulfanyl.
The term "alkynyl" as used herein, means a straight or branched chain hydrocarbon group containing from 2 to 10 carbon atoms and containing at least one carbon-carbon triple bond. Representative examples of alkynyl include, but are not limited, to acetylenyl, 1-propynyl, 2-propynyl, 3-butynyl, 2-pentynyl, and 1-butynyl.
The term "aryl" as used herein, means a phenyl group, or a bicyclic fused ring system, or a tricyclic fused ring system wherein one or more of the fused rings is a phenyl group.
Bicyclic fused ring systems are exemplified by a phenyl group fused to another phenyl group or fused to a cycloalkyl group wherein the cycloalkyl group is selected from cyclopentane, cycloahexane, cycloheptane, or cyclooctane. Tricyclic fused ring systems are exemplified by a bicyclic fused ring system fused to a phenyl group. Representative examples of aryl include, but are not limited to, anthracenyl, azulenyl, fluorenyl, 5,6,7,8-tetrahydronaphthalenyl, 5,6,7,8-tetrahydro-1-naphthalenyl, 1,2,3,4-tetrahydro-1-naphthalenyl, (1S)-1,2,3,4-tetrahydro-1-naphthalenyl, (1R)-1,2,3,4-tetrahydro-1-naphthalenyl, indanyl, indenyl, ,3-dihydro-1H-indenyl, 2,3-dihydro-1H-inden-5-yl, 1-naphthyl, 2-naphthyl, and phenyl.

The aryl groups of the present invention are substituted with 0, 1, 2, 3, 4, or 5 substituents independently selected from alkoxy, alkenyl, alkyl, alkylsulfmyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, methylenedioxy, nitro, -NZ1Z2, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl. The aryl groups of this invention can be further substituted with an additional aryl or arylalkyl group, as defined herein, wherein the additional aryl group or the aryl portion of arylalkyl group are substituted with 0, 1, 2, 3, 4, or substituents independently selected from alkoxy, alkenyl, alkyl, alkylsulfmyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, methylenedioxy, nitro, -NZ1Z2, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl. Representative examples include, but are not limited to, 1,3-benzodioxol-5-yl, 3-benzylphenyl, 1,1'-biphenyl-3y1, 2-bromophenyl, 3-bromophenyl, 4-bromophenyl, 4-bromo-3-methylphenyl, 4-bromo-2-methylphenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 3-chloro-4-fluorophenyl, 4-chloro-3-methoxyphenyl, 3-chloro-2-methylphenyl, 2-chloro-5-methylphenyl, 2-chloro-6-methylphenyl, 4-chloro-2,6-dimethylphenyl, 3-chloro-4-fluorophenyl, 5-chloro-2-methylphenyl, 4-chloro-3-methylphenyl, 3-chloro-4-methylphenyl, 2-chloro-5-trifluoromethylphenyl, 3-chloro-4-trifluoromethoxyphenyl, 2-cyanophenyl, 3-cyanophenyl, 4-cyanophenyl, 2,3-dibromo-5-methylphenyl, 2,3-dichlorophenyl, 3,4-dichlorophenyl, 3,5-dichlorophenyl, 2,6-dichloro-3-methylphenyl, 2,6-diethylphenyl, 3,4-difluorophenyl, 2,4-difluorophenyl, 3,5-difluorophenyl, 3,5-dimethoxyphenyl, 2,5-dimethoxyphenyl, 2,3-dimethylphenyl, 2,6-dimethylphenyl, 2,5-dimethylphenyl, 3,5-dimethylphenyl, 3,4-dimethylphenyl, 3-(dimethylamino)phenyl, 3-ethoxyphenyl, 4-(ethoxycarbonyl)phenyl, 3-ethylphenyl, 2-ethyl-6-methylphenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2-fluoro-5-methylphenyl, 4-fluoro-3-methylphenyl, 4-fluoro-2-methylphenyl, 4-fluoro-3-trifluoromethylphenyl, 3-fluoro-5-trifluoromethylphenyl, 2-fluoro-5-trifluoromethylphenyl, 2-fluoro-3-trifluoromethylphenyl, 4-iodo-3-methylphenyl, 3-isopropoxyphenyl, 3-isopropylphenyl, 2-isopropyl-6-methylphenyl, 2-methoxyphenyl, 3-methoxyphenyl, methoxyphenyl, 2-methoxy-6-methylphenyl, 3-methoxy-2-methylphenyl, 3-methylphenyl, 2-methylphenyl, 4-methylphenyl, 5-methyl-2-nitrophenyl, 4-methyl-3-trifluoromethylphenyl, 3-methylthiophenyl, 2-nitrophenyl, 3-nitrophenyl, 4-nitrophenyl, 2,4,6-tribromo-3-methylphenyl, pentafluorophenyl, 3-(tert-butyl)phenyl, 2,4,6-trichlorophenyl, 2,4,6-trifluorophenyl, 2-trifluoromethylphenyl, 3-trifluoromethylphenyl, 4-trifluoromethylphenyl, 2-trifluoromethoxyphenyl, 3-trifluoromethoxyphenyl, 4-trifluoromethoxyphenyl, 3,4,5-trimethoxyphenyl, and 3-vinylphenyl.
The term "arylalkyl" as used herein, means an aryl group, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
Representative examples of arylalkyl include, but are not limited to, phenylmethyl, 2-phenylethyl, 3-phenylpropyl, and 3-(2-methylphenyl)propyl.
The term "arylsulfonyl" as used herein, means an aryl group, as defined herein, appended to the parent molecular moiety through a sulfonyl group, as defined herein.
Representative examples of arylsulfonyl include, but are not limited to, phenylsulfonyl, 2-methylphenylsulfonyl, 2-nitrophenylsulfonyl, and 3-nitrophenylsulfonyl.
The term "arylalkylsulfonyl" as used herein, means an arylalkyl group, as defined herein, appended to the parent molecular moiety through a sulfonyl group, as defined herein.
Representative examples of arylalkylsulfonyl include, but are not limited to, (phenylmethyl)sulfonyl, (2-phenylethyl)sulfonyl, and (3-phenylpropyl)sulfonyl.
The term "carbonyl" as used herein, means a -C(O)- group.
The term "carboxy" as used herein, means a -COZH group.
The term "cyano" as used herein, means a -CN group.
The term "cycloalkyl" as used herein, means a monocyclic, bicyclic, or tricyclic ring system. Monocyclic ring systems are exemplified by a saturated cyclic hydrocarbon group containing from 3 to ~ carbon atoms. Examples of monocyclic ring systems include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl.
Bicyclic ring systems are exemplified by a bridged monocyclic ring system in which two non-adjacent carbon atoms of the monocyclic ring are linked by an alkylene bridge of between one and three additional carbon atoms (-CHZ-, -CHZCH2-, and -CHZCHaCHa-).
Representative examples of bicyclic ring systems include, but are not limited to, bicyclo[3.1.1]heptane, bicyclo[2.2.1]heptane, bicyclo[2.2.2]octane, bicyclo[3.2.2]nonane, bicyclo[3.3.1]nonane, and bicyclo[4.2.1]nonane. Tricyclic ring systems are exemplified by a bicyclic ring system in which two non-adjacent carbon atoms of the bicyclic ring are linked by a bond or an alkylene bridge of between one and three carbon atoms (-CHZ-, -CHZCHZ-, and -CHZCHZCH~-).
Representative examples of tricyclic-ring systems include, but are not limited to, tricyclo[3.3.1.03']nonane and tricyclo[3.3.1.13']decane (adamantyl).

The cycloalkyl groups of the present invention are substituted with 0, 1, 2, 3, or 4 substituents independently selected from alkoxy, alkenyl, alkyl, alkylsulfmyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)carbonyl or (NZ3Z4)sulfonyl. Representative examples of cycloalkyl substituted with 0, 1, 2, 3, or 4 substituents include, but are not limited to, 2-methylcyclohexyl, 2-cyanocyclohexyl, and 2-methoxycyclohexyl.
The term "fluoroalkylene" as used herein, means at least one fluoride atom (-F) is appended to the parent molecular moiety through an alkylene group, as defined herein.
Representative examples of fluoroalkylene are -CH(F)-, -CH(F)CHZ-, -C(F)2CH2-, -CH(F)CH(F)-, -CH(CF3)-, -CH(CH2CF3)-, and -CH2CH2CH2CH(F)-.
The term "formyl" as used herein, means a -C(O)H group.
The term "halo" or "halogen" as used herein, refers to -Cl, -Br, -I or -F.
The term "haloalkoxy" as used herein, means at least one halogen, as defined herein, appended to the parent molecular moiety through an alkoxy group, as defined herein.
Representative examples of haloalkoxy include, but are not limited to, 2-fluoro-1-chloroethoxy, chloromethoxy, 2-fluoroethoxy, trifluoromethoxy, and pentafluoroethoxy.
The term "haloalkyl" as used herein, means at least one halogen, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
Representative examples of haloalkyl include, but are not limited to, chloromethyl, 2-fluoroethyl, trifluoromethyl, pentafluoroethyl, and 2-chloro-3-fluoropentyl.
The term "heterocycle" or "heterocyclic" as used herein, means a monocyclic, bicyclic, or tricyclic ring system. Monocyclic ring systems are exemplified by any 3- or 4-membered ring containing a heteroatom independently selected from oxygen, nitrogen and sulfur; or a 5-, 6- or 7-membered ring containing one, two or three heteroatoms wherein the heteroatoms are independently selected from nitrogen, oxygen and sulfur. The 5-membered ring has from 0-2 double bonds and the 6- and 7-membered ring have from 0-3 double bonds.
Representative examples of monocyclic ring systems include, but are not limited to, azetidinyl, azepanyl, aziridinyl, diazepinyl, 1,3-dioxolanyl, dioxanyl, dithianyl, furyl, imidazolyl, imidazolinyl, imidazolidinyl, isothiazolyl, isothiazolinyl, isothiazolidinyl, isoxazolyl, isoxazolinyl, isoxazolidinyl, morpholinyl, oxadiazolyl, oxadiazolinyl, oxadiazolidinyl, oxazolyl, oxazolinyl, oxazolidinyl, piperazinyl, piperidinyl, pyranyl, pyrazinyl, pyrazolyl, pyrazolinyl, pyrazolidinyl, pyridinyl, pyrimidinyl, pyridazinyl, pyrrolyl, pyrrolinyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydrothienyl, tetrazinyl, tetrazolyl, thiadiazolyl, thiadiazolinyl, thiadiazolidinyl, thiazolyl, thiazolinyl, thiazolidinyl, thienyl, thiomorpholinyl, 1,1-dioxidothiomorpholinyl (thiomorpholine sulfone), thiopyranyl, triazinyl, triazolyl, and trithianyl. Bicyclic ring systems are exemplified by any of the above monocyclic ring systems fused to a phenyl group, a cyclohexyl group, a cyclopentyl group, or another monocyclic heterocycle. Representative examples of bicyclic ring systems include but are not limited to, for example, benzimidazolyl, benzodioxinyl, benzothiazolyl, benzothienyl, benzotriazolyl, benzoxazolyl, benzofuranyl, benzopyranyl, benzothiopyranyl, cinnolinyl, indazolyl, indolyl, 2,3-dihydroindolyl, indolizinyl, naphthyridinyl, isobenzofuranyl, isobenzothienyl, isoindolyl, isoquinolinyl, phthalazinyl, pyranopyridinyl, quinolinyl, quinolizinyl, quinoxalinyl, quinazolinyl, tetrahydroisoquinolinyl, tetrahydroquinolinyl, and thiopyranopyridinyl. Tricyclic rings systems are exemplified by any of the above bicyclic ring systems fused to a phenyl group, a cyclohexyl group, a cyclopentyl group, or another monocyclic heterocycle. Representative examples of tricyclic ring systems include, but are not limited to, acridinyl, carbazolyl, carbolinyl, dibenzo[b,d]furanyl, dibenzo[b,d]thienyl, naphtho[2,3-b]furan, naphtho[2,3-b]thienyl, phenazinyl, phenothiazinyl, phenoxazinyl, thianthrenyl, thioxanthenyl and xanthenyl.
The heterocycles of this invention are substituted with 0, l, 2,or 3 substituents independently selected from alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, vitro, -NZ1Z2, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl. 'The heterocycle groups of this invention can be further substituted with an additional heterocycle group, as defined herein, wherein the additional heterocycle group is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkenyl, alkyl, alkylsulfmyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, vitro, -NZ1Z2, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl.
Representative examples include, but are not limited to, 1,3-dimethyl-1H-pyrazol-5-yl, 5-fluoro-1,3-benzothiazol-2-yl, 1-methyl-1H-benzimidazol-2-yl, 6-chloropyridin-2-yl, and 4-pyridin-2-ylpiperazin-1-yl.

The term "heterocyclealkyl" as used herein, means a heterocycle, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
Representative examples of heterocyclealkyl include, but are not limited to, pyridin-3-ylmethyl, 2-pyrimidin-2-ylpropyl, and 4-pyridin-2-ylpiperazin-1-ylmethyl.
The term "heterocyclecarbonyl" as used herein, means a heterocycle, as defined herein, appended to the parent molecular moiety through a carbonyl group, as defined herein.
Representative examples of heterocyclecarbonyl include, but are not limited to, pyridin-3-ylcarbonyl, quinolin-3-ylcarbonyl, and 4-pyridin-2-ylpiperazin-1-ylmethylcarbonyl.
The term "hydroxy" as used herein, means an -OH group.
The term "hydroxyalkyl" as used herein, means at least one hydroxy group, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
Representative examples of hydroxyalkyl include, but are not limited to, hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl 2-ethyl-4-hydroxyheptyl and 2,4-dihydroxybutyl.
The term "hydroxyalkylene" as used herein, means at least one hydroxy group, as defined herein, is appended to the parent molecular moiety through an alkylene group, as defined herein. Representative examples of hydroxyalkylene are -CH2CH(OH)CH2-, -CH(CHZOH)-, -CH(CHZCHZOH)-, and -CHZCHZCH(OH)CHZ-.
The term "mercapto" as used herein, means a -SH group.
The term "methylenedioxy" as used herein, means a -OCHZO- group wherein the oxygen atoms of the methylenedioxy are attached to the parent molecular moiety through two adjacent carbon atoms. A representative example includes, but is not limited to, 1,3-benzodioxol-5-yl.
The term "nitro" as used herein, means a -NOZ group.
The term "nitrogen protecting group" as used herein, means those groups intended to protect an amino group against undesirable reactions during synthetic procedures. Nitrogen protecting groups comprise carbamates, amides, N-benzyl derivatives, and imine derivatives.
Preferred nitrogen protecting groups are acetyl, benzoyl, benzyl, benzyloxycarbonyl (Cbz), formyl, phenylsulfonyl, pivaloyl, tert-butoxycarbonyl (Boc), tert-butylacetyl, trifluoroacetyl, and triphenylmethyl (trityl).
The term "-NZIZZ" as used herein, means two groups, Z~ and ZZ, which are appended to the parent molecular moiety through a nitrogen atom. Zl and Z~, are each independently selected from hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, formyl, heterocycle, heterocyclealkyl, and heterocyclealkylcarbonyl.
Representative examples of -NZ1Z2 include, but are not limited to, amino, methylamino, dimethylamino, acetylamino, (acetyl)(methyl)amino, and (methylsulfonyl)amino.
The term "-NZ3Z4" as used herein, means two groups, Z3 and Z4, which are appended to the parent molecular moiety through a nitrogen atom. ~Z3 and Z4 are each independently selected from hydrogen, alkyl, aryl, or arylalkyl. Representative examples of -NZ3Z4 include, but are not limited to, amino, methylamino, dimethylamino, ethylmethylamino, phenylamino, (phenylmethyl)amino, (2-phenylethyl)amino, (phenyl)(methyl)amino, and diethylamino.
The term "(NZ3Z4)alkyl" as used herein, means a -NZ3Z4 group, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
Representative examples of (NZ3Z4)alkyl include, but are not limited to, aminomethyl, (dimethylamino)methyl, and (methylamino)methyl.
The term "(NZ3Z4)carbonyl" as used herein, means a -NZ3Z4 group, as defined herein, appended to the parent molecular moiety through a carbonyl group, as defined herein.
Representative examples of (NZ~Z4)carbonyl include, but are not limited to, aminocarbonyl, (methylamino)carbonyl, (dimethylamino)carbonyl, (phenylmethylamino)carbonyl, ((phenyl)(methyl)amino)carbonyl, (phenylamino)carbonyl, (ethylrnethylamino)carbonyl, and (diethylamino)carbonyl.
The term "(NZ3Z4)sulfonyl" as used herein, means a -NZ3Z4 group, as defined herein, appended to the parent molecular moiety through a sulfonyl group, as defined herein.
Representative examples of (NZ3Z4)sulfonyl include, but are not limited to, aminosulfonyl, (methylamino)sulfonyl, (dimethylamino)sulfonyl, (phenylmethylamino)sulfonyl, ((phenylmethyl)(methyl)amino)sulfonyl, (phenylmethylamino)sulfonyl, (phenylamino)sulfonyl, and (ethylinethylamino)sulfonyl.
The term "sulfinyl" as.used herein, means a -S(O)- group.
The term "sulfonyl" as used herein, means a -S(O)Z- group.
The term "sexual dysfunction" as used herein, means sexual dysfunction in mammals including human male and human female sexual dysfunction.
The term "male sexual dysfunction" as used herein includes, but is not limited to, male erectile dysfunction or premature ejacualtion.

The term "female sexual dysfunction" as used herein includes, but is not limited to, female anorgasmia, clitoral erectile insufficiency, vaginal engorgement, dyspareunia, or vaginismus.
Compounds of the present invention may exist as stereoisomers wherein, asymmetric or chiral centers are present. These stereoisomers are "R" or "S" depending on the configuration of substituents around the chiral carbon atom. The terms "R" and "S" used herein are configurations as defined in IUPAC 1974 Recommendations for Section E, Fundamental Stereochemistry, Pure Appl. Chem., 1976, 45: 13-30. The present invention contemplates various stereoisomers and mixtures thereof and are specifically included within the scope of this invention. Stereoisomers include enantiomers and diastereomers, and mixtures of enantiomers or diastereomers. In particular, the stereochernistry at the point of attachment of -L2-B of compounds of formula (III) or formula (TV) wherein Xl is a bond and XZ is CRDRE may independently be either (R) or (S). 'The stereochemistry at the point of attachment of -L2-B of compounds of formula (III) or formula (I~ wherein X~ is CRBRc and XZ is a bond may independently be either (R) or (S). The stereochemistry at the point of attachment of -LZ-B of compounds of formula (III) or formula (TV) wherein XI
is CRBR~ and XZ is CRDRE may independently be either (R) or (S). Individual stereoisomers of compounds of the present invention may be prepared synthetically from commercially available starting materials which contain asymmetric or chiral centers or by preparation of racemic mixtures followed by resolution well-known to those of ordinary skill in the art. These methods of resolution are exemplified by (1) attachment of a mixture of enantiomers to a chiral auxiliary, separation of the resulting mixture of diastereomers by recrystallization or chromatography and liberation of the optically pure product from the auxiliary, (2,) direct separation of the mixture of optical enantiomers on chiral chromatographic columns, or (3) formation of a diastereomeric salt followed by selective recrystallization of one of the diastereomeric salts.
Compounds of the present invention were named by ACD/ChemSketch version 5.0 (developed by Advanced Chemistry Development, Inc., Toronto, ON, Canada) or were given names which appeared to be consistent with ACD nomenclature.
Preferred compounds of the present invention include:
2-[4-(2-methoxyphenyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
2-[4-(2-cyanophenyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-pyrimidinyl)-1-piperazinyl]acetamide;

N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-methylphenyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(2-nitrophenyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-methylphenyl)-2-(4-phenyl-1-piperazinyl)acetamide;
N-(3-cyanophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
N-(4-bromo-3-methylphenyl)-2-[4-(2-cyanophenyl)-1-piperazinyl]acetamide;
2-[4-(2-cyanophenyl)-1-piperazinyl]-N-phenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-phenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl] N-(3,5-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,3-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,5-dimethylphenyl)acetamide;
N-(3-chlorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,4,5-trimethoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-fluoro-5-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-5-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluoro-3-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl] N-(2-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl] N-[2-(trifluoromethyl)phenyl]acetamide;

N-phenyl-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-methylphenyl)acetamide;
2-[4-(2-methoxyphenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
2=[4-(2-fluorophenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-methylphenyl)-1-piperidinyl]acetamide;
2-[4-(3-fluorophenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(6-oxo-1 (6H)-pyridazinyl)-1-piperidinyl]acetamide;
N-(2, 6-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl] acetamide;
N-(2, 5-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl] acetamide;
N-(2-methylphenyl)-2-[4-(2-thienyl)-1-piperidinyl] acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-thienyl)-1-piperidinyl] acetamide;
N-(4-bromophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-(2,5-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[3-(trifluoromethyl)phenyl] acetamide;
ethyl 4-( ~ [4-(2-pyridinyl)-1-piperidinyl]acetyl amino)benzoate;
N-(3-chloro-4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-(2-cyanophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-(4-phenyl-3,6-dihydro-1 (2H)-pyridinyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetamide;

N-(2,4-difluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'I~-yl)acetarnide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,5-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-cyclohexyl-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
ethyl 4-[(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylacetyl)amino]benzoate;
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2-cyanophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(4-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,3-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3,5-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'I~-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3,5-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,, 3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
N-Cyclohexyl-2-(3',4',5',6'-tetrahydro-2'H-[2,4']bipyridinyl-1'-yl) acetamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}-3-methylbenzamide;
3-methyl-N-{[4-(2-pyrimidinyl)-1-piperazinyl]methyl}benzamide;
3-methyl-N- { [4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
3-methyl-N-[(4-phenyl-1-piperazinyl)methyl]benzamide;~
N- { [4-(2-methoxyphenyl)-1-piperazinyl]methyl} -3-methylbenzamide;
N- { [4-(2-cyanophenyl)-1-piperazinyl]methyl} -2-methylbenzamide;

N-{ [4-(2-cyanophenyl)-1-piperazinyl]methyl}-4-methylbenzamide;
N- { [4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl } -3-methylbenzamide;
N- { [4-(3-cyanophenyl)-1-piperazinyl]methyl } -3-methylbenzamide;
N-{[4-(3-cyanophenyl)-1-piperazinyl]methyl}-2-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-4-methylbenzamide;
N- { [4-(3 -cyano-2-pyridinyl)-1-piperazinyl]methyl } -2-methylbenzamide;
N-{ [4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{ [4-(2-chlorophenyl)-1-piperazinyl]methyl}benzamide;
3-chloro-N-{ [4-(2-cyanophenyl)-1-piperazinyl]methyl}benzamide;
4-chloro-N-{ [4-(2-methoxyphenyl)-1-piperazinyl]methyl}benzamide;
2-chloro-N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N- { [4-(3 -cyano-2-pyridinyl)-1-piperazinyl]methyl } -2-(trifluoromethyl)benzamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(2-methoxyphenyl)-1-piperidinyl]methyl}-3-methylbenzamide;
3-methyl-N- { [4-(2-pyridinyl)-1-piperidinyl]methyl } benzamide;
3-methyl-N-[(4-phenyl-3,6-dihydro-1 (2H)-pyridinyl)methyl]benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methylbenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methoxybenzamide; ' N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-fluorobenzamide;
N-(3', 6'-dihydro-2,4'-bipyridin-1' (2'H)-ylmethyl)-3, 5-difluorobenzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-3-pyridinylacetamide;
2-( 1-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridiniumn N-oxide;
N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-2-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-cyclohexylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-5,6,7,8-tetrahydro-1-naphthalenylacetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
N- { [4-(2-pyridinyl)-1-piperidinyl]methyl } cyclohexanecarboxamide;

3,4-difluoro-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl]benzamide;
3-chloro-N- { [4-(2-pyridinyl)-1-piperidinyl]methyl] benzamide;
2,3-dimethyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-(trifluoromethyl)benzamide;
3-chloro-N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)cyclohexanecarboxamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,4-difluorobenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethoxybenzamide;
N-(3-methylphenyl)-2-(4-phenyl-1-piperidinyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
N-1-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl] acetamide;
3-methyl-N-{[2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3,5-dimethyl-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl]benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethylbenzamide;
3-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
N-[(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]-3-methylbenzamide;
N-(2,6-dimethylphenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,4-difluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(2,3-dichlorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;

2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-thienyl)-3,6-dihydro-1 (2H)-pyridinyl]-N-(3-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetarnide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl) N-(2,4-difluorophenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1' (2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,3-dichlorophenyl)acetamide;
3-methyl-N- f [4-(6-oxo-1(6H)-pyridazinyl)-1-piperidinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-adamantanecarboxamide;
3-methyl-N- f [4-(1,3-thiazol-2-yl)-3,6-dihydro-1(2H)-pyridinyl]methyl}benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-1,2,3,4-tetrahydro-1-naphthalenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1 S)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1R)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
N-(2,6-diethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trichlorophenyl)acetamide;
N-(2,6-diethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trichlorophenyl)acetamide;

N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}cyclohexanecarboxamide;
N-(2, 6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl] acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl] acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[3-(fxifluoromethyl)phenyl]acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-benzyl-2-[4-(2-pyridinyl)-1-piperazinyl] acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(4-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3,4-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl] ac etamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;
3-chloro-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
4-fluoro-3-methyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-4-fluoro-3-methylbenzamide;
3-methyl-N-{[4-(1,3-oxazol-2-yl)-3,6-dihydro-1 (2H)-pyridinyl]methyl}benzamide;
2-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(2,6-dirnethylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-methyl-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;
N-(2-ethyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-isopropyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
N-(2-chloro-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methoxy-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-ethyl-6-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-isopropyl-6-methylphenyl)acetamide;
N-(2-chloro-6-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methoxy-6-methylphenyl)acetamide;

3-chloro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-methyl-N-{[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methyl-N-{[(2R)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(ZR)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methoxy-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
4-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-naphthamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-3-fluorobenzamide;
2-(1-{2-[(4-fluoro-2-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
oxide;
oxide;
2-(1-{2-[(4-fluoro-3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-2-(1-{2-[(3-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(2,-fluoro-5-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-2-( 1- { 1-methyl-2-[(3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(4-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;

(1-{2-[(2-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide; N-(3-methylphenyl)-2- {4-[3-(trifluoromethyl)-2-pyridinyl]-1-piperazinyl}
acetamide;
N-(3-methylphenyl)-2- {4-[3-(trifluoromethyl)-2-pyridinyl]-1-piperazinyl}
acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-3,6-dihydropyridin-1 (2H)-yl]acetamide;
N-(3-methylphenyl)-2-(4-thien-2-yl-3,6-dihydropyridin-1 (2H)-yl)acetamide;
3-methyl-N-[(4-thien-2-yl-3,6-dihydropyridin-1 (2H)-yl)methyl]benzamide;
2-(1-{2-[(3-chlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[4-(1-methyl-1 H-imidazol-2-yl)-3,6-dihydropyridin-1 (2H)-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-nitropyridin-2-yl)piperazin-1-yl]acetamide;

2-[4-(3-chloropyridin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(1-{2-oxo-2-[(2,4,6-tribromo-3-methylphenyl)amino]ethyl}piperidin-4 yl)pyridinium N-oxide;
2- f 4-[3-(aminomethyl)pyridin-2-yl]piperazin-1-yl}-N-(3-methylphenyl)acetamide;
2-[4-(2-isopropoxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperazin-1-yl)nicotinamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-pyridin-2-ylpiperazin-1-yl]ethanethioamide;
~-(1-{[(4-bromo-3-iriethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-[3-(methylthio)phenyl]acetamide;
N-(3-tert-butylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl] acetamide;
2-[4-(2-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(4-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(2-ethoxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2- {4-[2-(methylthio)phenyl]piperazin-1-yl} acetamide;
2-[4-(2-fluorophenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(3-fluorophenyl)acetamide;
N-(3-bromophenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl] acetamide;
N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)ethanethioamide;
2-[4-(2-arninophenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-nitrophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
2-[4-(2-cyanophenyl)piperazin-1-yl]-N-(3-nitrophenyl)acetamide;
N-(3-cyanophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
N-(3-cyanophenyl)-2-[4-(2-cyanophenyl)piperazin-1-yl]acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(pentafluorophenyl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-( 1, 3-dimethyl-1 H-pyrazol-5-yl)acetamide;
N-(3-benzylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(2-chloropheriyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-cyanopyrazin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-pyridin-2-ylpiperazin-1-yl)-N-(2-~[(4-pyridin-2-ylpiperazin-1-yl)acetyl]amino}phenyl)acetamide;

N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)ethanethioamide;
2-[4-(1-methyl-1H-imidazol-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)piperidin-1-yl]acetamide;
N-(4-iodo-3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)acetamide;
2-(4-fluoro-4-phenylpiperidin-1-yl)-N-(3-rnethylphenyl)acetamide;
2-[4-(5-hydroxypyridin-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;
N-(5-fluoro-1, 3-benzothiazol-2-yl)-2-[4-(3-methoxyphenyl)piperazin-1-yl]
acetamide;
2-[4-(2-methoxyphenyl)piperazin-1-yl]-N-( 1-methyl-1 H-benzimidazol-2-yl)acetamide;
N-(3-xriethylphenyl)-2-[4-(3-methylthien-2-yl)-3,6-dihydropyridin-1 (2H)-yl] acetamide;
2-(1-{2-[(3,5-dichlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,3-dichlorophenyl)amino]-2.-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-( 1- {2-[(2-methoxy-6-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(1,1'-biphenyl-3-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{2-[(3-ethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(2,3-dihydro-1H-inden-5-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;
2- { 1-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-1-ylamino)ethyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{2-[(3-isopropoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethylphenyl)amino]-2,-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(4-bromo-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[ 1-(2-oxo-2- { [3-(trifluoromethoxy)phenyl] amino } ethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-methyl-2-nitrophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dimethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dichloro-3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;

2- { 1-[2-( 1,3-benzodioxol-5-ylamino)-2-oxoethyl]piperidin-4-yl } pyridinium N-oxide;
2-[1-(2-{[3-(methylthio)phenyl]amino}-2-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-chloro-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,5-dimethoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-(2-{[3-(dimethylamino)phenyl]amino}-2-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(3-isopropylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3-chloro-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
3-methyl-N-[2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]benzamide;
2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[(benzoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(4-chloro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-fluoro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[ 1-( { [3-chloro-4-(trifluoromethoxy)benzoyl] amino } methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-ethoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dichlorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[ 1-( { [4-methyl-3-(trifluoromethyl)benzoyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3,4-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-chloro-4-fluorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(pyridin-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-vinylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;

2-(1-{[(4-bromo-3-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-{1-[(2-naphthoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(thien-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-( {[(6-chloropyridin-3-yl)carbonyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-cyanobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
oxide;
oxide;
2-(1-{[(3-chloro-4-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[methyl(3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-nitrobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2-chloro-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-methoxy-2-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-2-(1-{[(4-chloro-3-methoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-N-(3-methylphenyl)-2-(3-pyridin-2-ylpiperidin-1-yl)acetamide;
N-(3-methylphenyl)-2-(3-pyridin-2-ylpyrrolidin-1-yl)acetamide;
N-( 1-methyl-1 H-benzimidazol-2-yl)-2-[3-( 1, 3-thiazol-2-yl)piperidin-1-yl]
acetamide;
N-( 1-methyl-1 H-benzimidazol-2-yl)-2-[3-( 1, 3-thiazol-2-yl)pyrrolidin-1-yl]
acetamide;
2-(2-benzylpyrrolidin-1-yl)-N-(3-fluorophenyl)acetamide; and N-(4-fluorophenyl)-2-(3-thien-2-ylpyrrolidin-1-yl)acetamide; or pharmaceutically acceptable salts, esters, amides, or prodrugs thereof.
A most preferred compound of the present invention is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
Abbreviations Abbreviations which have been used in the descriptions of the Schemes and the Examples that follow are: Ac for acetyl; BINAP for 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl; Boc for tent-butoxycarbonyl; nBuLi for n-butyllithium; dba for dibenzylideneacetone; DME for dimethoxyethane; DMF for N,N-dimethylformamide;

DMSO for dimethylsulfoxide; EtOH for ethanol; HPLC for high pressure liquid chromatography; MeOH for methanol; TEA for triethylamine; TFA for trifluoroacetic acid;
THF for tetrahydrofuran; THP for tetrahydropyran; TLC for thin layer chromatography.
Preparation of Compounds of the Present Invention The compounds and processes of the present invention will be better understood in connection with the following synthetic Schemes and Examples which illustrate a means by which the compounds of the present invention can be prepared.
Scheme 1 CI~ NaOH, CHaCl2, RT NH
A-NHS + II Br or A' ~Br O toluene, reflux O
(1) (2) iPr2EtN, toluene, heat or Na2C03, DMF, RT
or A~NH~N~ .
K2CO3, toluene, R ~[T
B
H ~ HN~ HN
or ~ or N'B B ~ B
(3) (4) (5) Compound of general formula (6), wherein A, Z, B, and --- are as defined in formula (I), can be prepared as described in Scheme 1. Amines of general formula (1) can be treated with bromoacetyl chloride, sodium hydroxide in a solvent such as, but not limited to, toluene or methylene chloride to provide compounds of general formula (2). Compounds of general formula (2) can be treated with an amine of general formula (3) or (4) or (5) in the presence of a base such as, but not limited to, diisopropylethylamine, sodium carbonate, or potassium carbonate in a solvent such as, but not limited to, toluene or N,N-dimethylformamide to provide compounds of general formula (6).

Scheme 2 Acid or thionyl chloride p\N gM p,N or . P~N
) _ ~g CHs02CNS02N(C2H5)2 O ~\ B
(g) (10) OH (11 ) HN
(11) deprotect B
(5) H2, Pd/C HN
(11) B
(4) Compounds of general formula (5) and (4), wherein B is as defined in formula (I) can be prepared as described in Scheme 2. Piperidinones of general formula (8), purchased commercially or prepared using standard methods know to those of skill in the art wherein P
is a nitrogen protecting group such as, but not limited to, (CH3)3COZC- or C6HSCHz02C-, can be treated with compounds of general formula (9), wherein M is Li, MgBr, MgCI, Cu, or Zn to provide compounds of general formula (10). Compounds of general formula (10) can be treated with Burgess Reagent, thionyl chloride or an acid such as, but not limited to, sulfuric acid or trifluoracetic acid to provide dihyropyridines of general formula (11).
Dihyropyridines of general formula (11) can be deprotected using standard methods known to those of ordinary skill in the art to provide compounds of general formula (4) and (5).
Scheme 3 p,N p,N ' I O,g-BO~ p-N I , Tf2NPh ~~ ~ ~ ~g OR
'OTf ( )a O.
(g) (13) (14) (14) ArX or hetX, Pd(0) p~N I deprotect HN~ HN
> o ~\r X=Br or I B B B
Ar=aryl (11) (4) (5) Het=heterocycle B=aryl or heterocycle Compounds of general formula (4) and (5), wherein B is as defined in formula (I), can be prepared as described in Scheme 3. Piperidinones of general formula (8), purchased commercially or prepared using standard methods know to those of skill in the art wherein P
is a nitrogen protecting group such as, but not limited to, (CH3)3C02C- or C6HSCHZO2C-, can be treated with Tf2NPh to provide triflates of general formula (13). Triflates of general formula (13) can be treated with diborane pinacol ester to provide boranes of general formula (14). Boranes of general formula (14) can be treated with ArX or HetX in the presence of a Pd(0) catalyst to provide compounds of general formula (11). Compounds of general formula (11) can be deprotected using standard methods known to those of ordinary skill in the art to provide compounds of general formula (4) and (5).
Scheme 4 O O O
~OH
II Pb(OAc)4 '°' H O
O
(16) (17) O
~ A~N~N~
(17) + H ~N or HNl l or HN~ base H ~Z.
B B B B
(3) (4) (5) (18) Compounds of general formula (18), wherein A, Z, B, and --- are as defined in formula (I), can be prepared as described in Scheme 4. Acids of general formula (16), purchased commercially or prepared using standard methods known to those of ordinary skill in the art, can be treated with lead tetraacetate and copper(II) acetate in a solvent such as, but not limited to, toluene with heat to provide acetates of general formula (17).
Acetates of general formula (17) can be treated with an amine of general formula (3) or (4) or (5) and a base such as, but not limited to, triethylamine in a solvent such as, but not limited to, acetonitrile to provide compounds of general formula (18).

Scheme 5 O
A~NHZ O
(20) (CH20)n A~N~N~
base ' H ~Z~B
N ~N or HN~or HN
B B B
(3) (4) (5) Compounds of general formula (18), wherein A, Z, B, and --- are as defined in formula (I), can be prepared as described in Scheme 5. Amides of general formula (20), purchased commercially or prepared using methods known to those of ordinary skill in the art, can be treated with paraformaldehyde and a base such as, but not limited to, potassium carbonate in a solvent such as, but not limited to, ethanol with heat to provide compounds of general formula (18).
The following Examples are intended as an illustration of and not a limitation upon the scope of the invention as defined in the appended claims.
Example 1 2-L4-(2-methoxyphenylLpiperazinyl]-N-(3-meth~phenyl)acetamide Example lA
2-bromo-N-(3-methvlphenvl)acetamide 3-Methylaniline (Acros, 15.50 mL, 141.8 mmol) in 2N aqueous sodium hydroxide (200 mL) at room temperature was treated with bromoacetyl chloride (Sigma, 12.50 mL, 152.0 mmol) as a solution in dichloromethane (200 mL). After 30 minutes, the layers were separated and the aqueous phase extracted with additional portions of dichloromethane. The organic phases were combined, washed with an aqueous solution of 1N HCI, dried (Na2S04), filtered, and the filtrate concentrated under reduced pressure to provide 16.69 g (52% yield) of the title compound as a white solid. 'H NMR (300 MHz, DMSO-db) S 2.28 (s, 3H), 4.01 (s, 2H), 6.91 (d, 1H, J=7.5 Hz), 7.20 (dd, 1H, J=7.5, 7.5 Hz), 7.36 (d, 1H, J=8.8 Hz), 7.42 (s, 1H), 10.28 (br s, 1H); MS (DCI/NH3) m/e 228/230 (M+H)+; 245/247 (M+NH4)+. .
Exam lp a 1 B
2-[4 (2 methoxyphe~l)-1 ~iperazinyll-N-(3-methylphenyl)acetamide 1-(2-methoxyphenyl)piperazine, (Aldrich, 1.50 g, 7.80 mmol) and N, N-diisopropylethylamine (2.0 mL) in toluene (30 mL) were treated with the product from Example lA (1.12 g, 4.90 mmol) and heated at 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (NaZS04), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with 85% hexanes:ethyl acetate then 50% hexanes:ethyl acetate) to provide 1.39 g (83% yield) of the title compound as a yellow oil. IH NMR (300 MHz, DMSO-d6) ~
2.28 (s, 3H), 2.67 (m, 4H), 3.03 (m, 4H), 3.17 (s, 2H), 3.77 (s, 3H), 6.89 (m, SH), 7.18 (dd, 1 H, J=7.8, 7. 8 Hz), 7.44 (m, 2H), 9.64 (br s, 1 H); MS (DCI/NH3) mle 340 (M+H)+.
HCl salt: white solid; mp 80 °C (dec); 1H NMR (300 MHz, DMSO-d6) 8 2.30 (s, 3H), 3.11 (br s, 2H), 3.46 (br s, 4H), 3.60 (br s, 2H), 3.80 (s, 3H), 4.25 (br s, 2H), 6.95 (m, SH), 7.24 (dd, 1H, J=7.4, 7.4 Hz), 7.44 (m, 2H), 10.52 (br s, O.SH), 10.82 (br s, O.SH);
Anal. calcd for CZOHzsN30a~0.90 HCl: C, 64.53; H, 7.01; N, 11.29. Found: C, 64.38; H, 6.83; N, 11.17.
Example 2 2-f4-(2-cyanophenyl)-1-~iperazin~]-N-(3-methylphenyl)acetamide The procedure described in Example 1B was followed, substituting 1-(2-cyanophenyl)piperazine (Chess) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (92% yield) as a colorless oil. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.73 (m, 4H), 3.21 (s, 2H), 3.23 (m, 4H), 6.88 (br d, 1H, J=7.5 Hz), 7.10 (ddd, 1H, J=7.5, 7.5, 0.7 Hz), 7.19 (m, 2H), 7.44 (m, 2H), 7.61 (ddd, 1 H, J=7.5, 7.5, 1.7 Hz), 7.70 (dd, 1 H, J=7.8, 1.7 Hz), 9.68 (br s, 1H); MS (DCM3) m/e 335 (M+H)+.
Maleate salt: white solid, mp 168-170 °C; 'H NMR (300 MHz, DMSO-d6) &
2.30 (s, 3H), 3.21 (br s, 4H), 3.37 (br s, 4 H), 3.82 (br s, 2H), 6.13 (s, 2H), 6.93 (br d, 1H, J=7.4 Hz), 7.18 (m, 3H), 7.42 (m, 2H), 7.64 (ddd, 1H, J=7.5, 7.5, 1.4 Hz), 7.74 (dd, 1H, J=7.8, 1.7 Hz), 10.15 (br s, 1H); Anal. calcd for CZOHZZN4O~1.O C~O4: C, 63.99; H, 5.82; N, 12.44.
Found: C, 63.80; H, 5.80; N, 12.21.
Example 3 N (3 methylphenyll-2-f4-(2-pynmidin~)-1-piperaziny-acetamide The procedure described in Example 1B was followed, substituting 1-(2-pyrimidinyl)piperazine (EMKA-Chemie) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (70% yield) as a white solid. mp 113-116 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.57 (m, 4H), 3.17 (s, 2H), 3.80 (m, 4H), 6.62 (dd, 1H, J=4.8, 4.8 Hz), 6.88 (br d, 1H, J=7.4 Hz), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.46 (m, 2H), 8.36 (d, 2H, J=4.7 Hz), 9.67 (br s, 1H); MS (DCI/NH3) m/e 312 (M+H)+; Anal. calcd for CI~H21N50: C, 65.57;
H, 6.80;
N, 22.49. Found: C, 65.39; H, 6.77; N, 22.56.
Example 4 N (3 meth~phenyl)-2-[4-(2-nyridinylLpiperazinyllacetamide The procedure described in Example 1B was followed, substituting 1-(2-pyridinyl)piperazine (Aldrich) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (65% yield) as a white solid. mp 126-127 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 2.60 (m, 4H), 3.17 (s, 2H), 3.55 (m, 4H), 6.63 (ddd, 1H, J=6.7, 4.7, 0.6 Hz), 6.82 (d, 1H, J=8.8 Hz), 6.88 (br d, 1H, J=7.8 Hz), 7.18 (dd, 1H, J=6.7, 4.7, 0.6 Hz), 7.46 (m, 2H), 7.52 (ddd, 1H, J=8.8, 7.1, 2.0 Hz), 8.11 (m, 1H), 9.67 (br s, 1H); MS
(DCI/NH3) m/e 311 (M+H)+; Anal. calcd for C1gH22N4O: C, 69.65; H, 7.14; N, 18.05. Found: C, 69.72; H, 7.09; N, 18.22.
Example 5 2 [4 (3 cyano 2=pyridinyl)-1-piperazinyll N-(3-methylphenyl)acetamide The procedure described in Example 1B was followed, substituting 2-(1-piperazinyl)nicotinonitrile (Chess) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (64% yield) as a white solid. mp 99-100 °C; 1H NMR (300 MHz, DMSO-db) 8 2.28 (s, 3H), 2.68 (m, 4H), 3.19 (s, 2H), 3.68 (m, 4H), 6.88 (br d, 1H, J=7.8 Hz), 6.93 (dd, 1H, J=7.8, 4.8 Hz), 7.18 (dd, 1H, J =7.5, 7.5 Hz), 7.44 (br d, 1H, J=8.2 Hz), 7.47 (br s, 1H), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=5.1, 2.0 Hz), 9.68 (br s, 1H);
MS (DCI/NH3) m/e 336 (M+H)+; Anal. calcd for C19H21NSO: C, 68.04; H, 6.31; N, 20.88. Found:
C, 68.19;
H, 6.36; N, 21.15.
Example 6 N (3 methylphen~l 2 [4-(2-meth~phenylZ-1-piperazinyllacetamide The procedure described in Example 1B was followed, substituting 1-(2-methylphenyl)piperazine (EMKA Chemie) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (75% yield) as a white solid. mp 104-106 °C; 1H NMR
(300 MHz, DMSO-d6) 8 2.24 (s, 3H), 2.28 (s, 3H), 2.69 (m, 4H), 2.91 (m, 4H), 3.19 (s, 2H), 6.88 (br d, 1H, J=7.4 Hz), 6.95 (dd, 1H, J=7.1, 7.1 Hz), 7.05 (m, 1H), 7.17 (m, 3H), 7.45 (m, 2H), 9.64 (br s, 1H); MS (DCI/NH3) m/e 324 (M+H)+; Anal. calcd for CZOH25N3O: C, 74.27;
H, 7.79;
N, 12.99. Found: C, 74.34; H, 7.85; N, 12.91.
Example 7 N-(3-meth~phen ly 1-2-'[4-(2-nitrophenyl)-1-piperazin~]acetamide The procedure described in Example 1B was followed, substituting 1-(2-nitrophenyl)piperazine (EMI~A Chemie) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (91% yield) as an orange oil. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.66 (m, 4H), 3.07 (m, 4H), 3.18 (s, 2H), 6.88 (br d, 1H, J=7.8 Hz), 7.13 (ddd, 1H, J=8.5, 7.1, 1.0 Hz), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.35 (dd, 1H, J=8.1, 1.0 Hz), 7.45 (m, 2H), 7.59 (ddd, 1H, J=8.1, 7.1, 1.3 Hz), 7.79 (dd, 1H, J=8.1, 1.7 Hz), 9.66 (br s, 1H); MS
(DCM3) m/e 355 (M+H)+.
maleate salt: yellow solid; mp 172-175 °C; Anal. calcd for C19H22N403'1~O C4H4O4: C, 58.72; H, 5.57; N, 11.91. Found: C, 58.38; H, 5.49; N, 11.64.
Example 8 2-[4-(3-cyano-2 ~yridinyl)-1-piperazin~l-N-(3-nitrophenyllacetamide 2-(1-Piperazinyl)-3-pyridinecarbonitrile (640 mg, 3.40 mmol) and N, N-diisopropylethylamine (1.0 mL) in toluene (15 mL) at room temperature were treated with N-chloroacetyl-3-nitroaniline (Lancaster, 610 mg, 2.84 mmol) and the reaction was heated at 90 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (NaaS04), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with 85%
hexanes:ethyl acetate) to provide 256 mg (25% yield) of the title compound as a light tan solid, mp 143-145 °C; IH NMR (300 MHz, DMSO-db) ~ 2.69 (m, 4H), 3.27 (s, 2H), 3.70 (m, 4H), 6.93 (dd, 1H, J=7.4, 5.0 Hz), 7.61 (dd, 1H, J=8.1, 8.1 Hz), 7.93 (br d, 1H, J=8.2 Hz), 8.06 (dd, 2H, J=7.8, 7.8 Hz), 8.42 (m, 1H), 8.70 (br s, 1H), 10.28 (br s, 1H); MS (DCI/NH3) m/e 367 (M+H)+; Anal. calcd for C18H1sN603: C, 59.01; H, 4.95; N, 22.94. Found: C, 59.31; H, 5.25;
N, 22.66.
Example 9 2 L4 (3 cXano 2~yridinyll-1-piperazinyl]-N-[3-(trifluoromethyl)phenyllacetamide The procedure described in Example 8 was followed, substituting N-chloroacetyl-(trifluoromethyl)aniline for N-chloroacetyl-3-nitroaniline, to provide the title compound (84% yield) as a yellow oil. 1H NMR (300 MHz, DMSO-d6) ~ 2.69 (m, 4H), 3.25 (s, 2H), 3.69 (m, 4H), 6.93 (dd, 1H, J=7.8, 4.7 Hz), 7.41 (br d, 1H, J=7.8 Hz), 7.56 (dd, 1H, J=7.8, 7.8 Hz), 7.90 (br d, 1H, J=8.4 Hz), 8.07 (dd, 1H, J=7.8, 2.1 Hz), 8.15 (br s, 1H), 8.42 (dd, 1H, J=4.7, 1.7 Hz), 10.11 (br s, 1H); MS (DCI/NH3) m/e 390 (M+H)+.
maleate salt: tan solid; mp 157-158 °C; IH NMR (300 MHz, DMSO-d6) 8 3.07 (br s, 4H), 3.73 (br s, 2H), 3.79 (br s, 4H), 6.15 (s, 2H), 7.00 (dd, 1H, J=7.4, 4.7 Hz), 7.46 (br d, 1H, J=7.8 Hz), 7.59 (dd, 1H, J=7.8, 7.8 Hz), 7.85 (br d, 1H, J=8.2 Hz), 8.13 (m, 2H), 8.45 (dd, 1H, J=4.7, 2.0 Hz), 10.48 (br s, 1H); Anal. calcd for C19H18F3NSO~1.O C4H4O4:
C, 54.56; H, 4.39; N, 13.86. Found: C, 54.30; H, 4.42; N, 13.42.
Example 10 N (3 meth~phen~l-2-(4-phenyl-1-piperazinyllacetamide The procedure described in Example 1B was followed, substituting 1-phenylpiperazine (Aldrich) for 1-(2-methoxyphenyl)piperazine, to provide the title compound (86°!° yield) as a white solid. mp 120-121 °C; IH NMR
(300 MHz, DMSO-d6) b 2.27 (s, 3H), 2.66 (m, 4H), 3.17 (s, 2H), 3.20 (m, 4H), 6,77 (dd, 1H, J=7.1, 7.1 Hz), 6.88 (br d, 1H, J=7.5 Hz), 6.94 (d, 2 H, J=7.8 Hz), 7.21 (m, 3H), 7.44 (m, 2H), 9.65 (br s, 1H); MS
(DCI/NH3) m/e 310 (M+H)+; Anal. calcd for C19H23N3O: C, 73.76; H, 7.49; N, 13.58. Found: C, 73.73; H, 7.50; N, 13.64. _ Example 11 N (3 cyanonhenyll 2 ~4 (3-c~ano-2-pyridinyll-1-piperazinyllacetamide The procedure described in Example 8 was followed, substituting N-chloroacetyl-cyanoaniline (Maybridge) for N-chloroacetyl-3-nitroaniline, to provide the title compound (60% yield) as a colorless oil. 1H NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.25 (s, 2H), 3.69 (m, 4H), 6.92 (dd, 1H, J=7.5, 5.1 Hz), 7.52 (m, 2H), 7.94 (m, 1H), 8.07 (m, 1H), 8.15 (m, 1H), 8.41 (m, 1H), 10.10 (br s, 1H); MS (DCI~NH3) m/e 347 (M+H)+.
maleate salt: white solid; mp 166-167 °C; 1H NMR (300 MHz, DMSO-d6) S
3.04 (br s, 4H), 3.69 (br s, 2H), 3.78 (br s, 4H), 6.16 (s, 2H), 6.99 (dd, 1H, J=7.5, 4.6 Hz), 7.58 (m, 2H), 7.89 (m, 1H), 8.12 (m, 2H), 8.45 (dd, 1H, J=4.7, 2.0 Hz), 10.46 (br s, 1H); Anal.
calcd for C~gHIgN6O~1.O C4H4O4: C, 59.73; H, 4.79; N, 18.17. Found: C, 59.73; H, 4.81;
N, 18.45.
Example 12 N-(4-bromo-3-methylpheny~-2-[4-(2-cyanophenyll-1-piperazinyllacetamide Example 12A
2-bromo-N-(4-bromo-3-methylphen~llacetamide 4-Bromo-3-methylaniline (10.08 g, 54.18 mmol) in 2N sodium hydroxide (200 mL) was treated with bromoacetyl chloride (5.00 mL, 60.8 mmol) as a solution in dichloromethane (200 mL) dropwise. After 15 minutes, the layers were separated. The organic phase was washed with 1N hydrochloric acid, dried (Na2S04), filtered, and the filtrate concentrated under reduced pressure to provide 11.75 g (71%) of the title compound as a tan solid. 1H NMR (300 MHz, CDC13) ~ 2.39 (s, 3H), 4.01 (s, 2H), 7.23 (m, 1H), 7.44 (d, 1H, J=2.4 Hz), 7.49 (d, 1H, J=8.8 Hz), 8.07 (br s, 1H); MS (DCI/NH3) xn/e 306 (M+H)+
Example 12B
N-(4-bromo-3-methylphenXl)-2-[4-(2-cyanophenyl)-1-piperazinyllacetamide The product from Example 12A (3.51 g, 11.4 mmol) and N, N-diisopropylethylamine (2.50 mL) in toluene (50 mL) were treated with 1-(2-cyanophenyl)piperazine (Chess, 2.90 g, 15.5 mmol) and the reaction mixture was heated at 90 °C for 18 hours.
The mixture was allowed to cool to room temperature and transferred to a separatory funnel with ethyl acetate and water. The organic phase was washed with saturated aqueous sodium bicarbonate, dried (Na2S04), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel to provide 3.66 g (77%) of the title compound as a yellow solid. mp 143-145 °C; 1H NMR (300 MHz, DMSO-d6) S 2.32 (s, 3H), 2.72 (m, 4H), 3.22 (m, 6H), 7.10 (ddd, 1H, J=7.4, 7.4, 0.6 Hz), 7.19 (d, 1H, 8.1 Hz), 7.49 (m, 2H), 7.61 (m, 1H), 7.65 (d, 1H, J=2.1 Hz), 7.70 (dd, 1H, J=7.8, 1.7 Hz)~ 9.82 (br s, 1H); MS
(DCI/NH3) m/e 413/415 (M+H)+; Anal. calcd for CzoHziBrN40: C, 58.12; H, 5.12;
N, 1.56.
Found: C, 58.13; H, 5.07; N, 13.54.
Example 13 2- f 4-(2-cyanophenyl)-1-piperazin~]-N-phenylacetamide The procedure described in Example 12B was followed, substituting 2-chloro-N-phenylacetamide (Maybridge) for the product from Example 12A, to provide the title compound (39% yield) as a yellow solid, mp 137-138 °C; 1H NMR (300 MHz, DMSO-d6) ~
2.73 (m, 4H), 3.22 (m, 6H), 7.08 (m, 2H), 7.19 (d, 1H, J=8.5 Hz), 7.30 (m, 2H), 7.63 (m, 2H), 7.70 (dd, 1H, J=7.8, 1.7 Hz), 9.76 (br s, 1H); MS (DCI/NH3) m/e 321 (M+H)+;
Anal. calcd for Cl9HzoN~O: C, 71.23; H, 6.29; N, 17.49. Found: C, 70.92; H, 6.34; N, 17.34.
Example 14 2-[4-(3-cyano-2-p ridinyl)-1-piperazinyll-N-phenylacetamide The procedure described in Example 8 was followed, substituting 2-chloro-N-phenylacetamide (Maybridge) for N-chloroacetyl-3-nitroaniline to provide the title compound (52% yield) as a white solid. mp 110-112 °C; 'H NMR (300 MHz, DMSO-d6) S 2.68 (m, 4H), 3.21 (s, 2H), 3.68 (m, 4H), 6.93 (dd, 1H, J=7.8, 4.7 Hz), 7.06 (dd, 1H, J=7.8, 7.8 Hz), 7.31 (dd, 2H, J=7. 8, 7.8 Hz), 7.64 (dd, 2H, J=8.8, 1.4 Hz), 8.07 (dd, 1 H, J=7.8, 2.0 Hz), 8:42 (dd, 1H, J=4.8, 1.7 Hz), 9.76 (br s, 1H); MS (DCI/NH3) m/e 322 (M+H)'~; Anal.
calcd for CI8H19N50: C, 67.27; H, 5.96; N, 21.79. Found: C, 67.21; H, 5.77; N, 21.59.
Example 15 2-(4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluorophenyl~acetamide ~ .
The procedure described in Example 8 was followed, substituting N-choroacetyl-fluoroaniline (Avocado) for N-chloroacetyl-3-nitroaniline, to provide the title compound (91 % yield) as a white solid. mp 98-100 °C; IH NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.20 (s, 2H), 3.68 (m, 4H), 6.92 (dd, 1H, J=7.5, 4.8 Hz), 7.15 (m, 2H), 7:67 (m, 2H),.8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.41 (dd, 1H, J=4:8, 1.7 Hz), 9.83 (br s, 1H); MS
(DCI/NH3) m/e 340 (M+H)+; Anal. calcd for C18Hi8FN50: C, 63.71; H, 5.35; N, 20.64. Found: C, 63.57; H, 5.32;
N, 20.79.

Example 16 2- [~3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3 , 5-dimeth~phen~)acetamide Example 16A
2-chloro-N-(3,5-dimethylphenyl)acetamide 3,5-Dimethylaniline (Acros, 10.50 mL, 84.05 mmol) in 2N sodium hydroxide (200 mL) was treated with chloroacetyl chloride (Acros, 10.00 mL, 125.7 mmol) as a solution in dichloromethane (200 mL) drop wise. After 18 hours, the layers were separated.
The organic phase was washed with 1N hydrochloric acid, dried (NaZSO4), filtered, and the filtrate concentrated under reduced pressure to provide 15.64 g (94%) of the title compound as a white solid. 1H NMR (300 MHz, DMSO-d6) 8.2.24 (s, 6H), 4.21 (s, 2H), 6.73 (s, 1H), 7.20 (s, 2H), 10.11 (br s, 1H); MS (DCI/NH3) m/e 198 (M+H)+.
Example 16B
2-C4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,5-dimethylphenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 16A for N-chloroacetyl-3-nitroaniline to provide the title compound (63% yield) as a white solid. mp 139-140 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.23 (s, 6H), 2.70 (m, 4H), 3.18 (s, 2H), 3.68 (m, 4H), 6.70 (br s, 1H), 6.93 (dd, 1H', J=7.8, 4.7 Hz), 7.28 (br s, 2H), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=4.7, 2.0 Hz), 9.60 (br s, 1H); MS
(DCI/hIH3) m/e 350 (M+H)+; Anal. calcd for CZOH23N5O: C, 68.74; H, 6.63; N, 20.04. Found: C, 68.56; H, 6.56;
N, 20.05 Example 17 2-[4-(3-cyano-2-pyridin~l)-1-piperazin 1~1-N-(2,3-dimethylphenyl)acetamide Example 17A
2-chloro-N-(2,3-dimethylphen~)acetamide The procedure described in Example 16A was followed, substituting 2,3-dimethylaniline for 3,5-dimethylaniline to provide the title compound (96%
yield) as a white solid. IH NMR (300 MHz, DMSO-d6) 8 2.07 (s, 3H), 2.24 (s, 3H), 4.28 (s, 2H), 7.07 (m, 3H), 9.70 (br s, 1H); MS (DCI/NH3) m/e 198 (M+H)+.
Example 17B
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyll-N-(2 3-dimethylphenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 17A for N-chloroacetyl-3-nitroaniline, to provide the title compound,(32% yield as a white solid. mp 124-126 °C; 'H NMR (300 MHz, DMSO-d6) b 2.12 (s, 3H), 2.26 (s, 3H), 2.72 (m, 4H), 3 .21 (s, 2H), 3.69 (m, 4H), 6.94 (dd, 1 H, J=7.8, 4. 8 Hz);
6.99 (br d, 1 H, J=7.4 Hz), 7.07 (dd, 1 H, J=7.4, 7.4 Hz), 7.45 (br d, 1 H, J=7.8 Hz), 8.08 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, 4.8, 2.1 Hz), 9.42 (br s, 1H); MS (DCI/NH3) mle 350 (M+H)+;
Anal. calcd for CZOH2sNs0~0.10 HZO: C, 68.39; H, 6.66; N, 19.94. Found: C, 68.74; H, 6.58; N, 19.56.
Example 18 2-[~3-cyano-2-pyridinyl)-1-piperazin~]-N-(2-meth~phenyl)acetamide Example 18A
2-chloro-N-(2-meth~phenyl)acetamide The procedure described in Example 16A was followed, substituting 2-methylaniline for 3,5-dimethylaniline to provide the title compound (90% yield) as a white solid. 1H NMR
(300 MHz, DMSO-d6) s 2.20 (s, 3H), 4.30 (s, 2H), 7.16 (m, 3H), 7.38 (d, 1H, J=7.8 Hz), 9.63 (br s, 1H); MS (DCI/NH3) m/e 184 (M+H)+.
Example 18B
2-f4-(3-c a~pyridinyl)-1-piperazinyl]-N~2-methylphenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 18A for N-chloroacetyl-3-nitroaniline, to provide the title compound (58% yield) as a light yellow solid. mp 123-125 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.25 (s, 3H), 2.73 (m, 4H), 3.22 (s, 2H), 3.69 (m, 4H), 6.94 (dd, 1H, J=7.8, 4.8 Hz), 7.06 (ddd, 1H, J=7.4, 7.4, 1.0 Hz), 7.17 (d, 1 H, J=7.8 Hz), 7.21 (dd, 1 H, 8.5, 8.5 Hz), 7.75 (d, 1 H, J=7.8 Hz), 8.08 (dd, 1 H, J=7.8, 1.7 Hz), 8.42 (dd, 1H; J=5.0, 1.7 Hz), 9.42 (br s, 1H); MS (DCI/NH3) m/e 336 (M+H)+; Anal. calcd for C19HZ1NsO~0.20 HZO: C, 67.32; H, 6.36; N, 20.66.
Found: C, 67.29;
H, 6.23; N, 20.66.
Example 19 2-[4-(3-c a~=pyridinyl)-1-piperazinyll-N-(2,5-dimethylphenyllacetamide Example 19A
2-chloro-N-(2,5-dimethylphen~) acetamide The procedure described in Example 16A was followed, substituting 2,5-dimethylaniline for 3,5-dimethylaniline, to provide the title compound (89%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 2.14 (s, 3H), 2.24 (s, 3H), 4.28 (s, 2H), 6.93 (d, 1H, J=7.8 Hz), 7.10 (d, 1H, J=7.8 Hz), 7.20 (s, 1H), 9.57 (br s; 1H); MS (DCI/NH3) m/e 198 (M+H)+.
Example 19B
2-[4-(3-c~ano-2-~yridi~l)-1-piperazinyl]-N-(2,5-dimethylphenyl)acetamide The procedure described in Example 8 was followed, substituting Example 19A
for N-chloroacetyl-3-nitroaniline, to provide the title compound (34% yield) as a white solid. mp 106-108 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.19 (s, 3H), 2.26 (s, 3H), 2.72 (m, 4H), 3.20 (s, 2H), 3 .69 (m, 4H), 6.87 (d, 1 H, J=7.4 Hz), 6.94 (dd, 1 H, J=7.5, 4. 8 Hz), 7.10 (d, 1 H, J=7.
Hz), 7.59 (br s, 1H), 8.08 (dd, 1H, J=7.8, 2.0 Hz), 8.42.(dd, 1H, J=4.7, 2.0 Hz), 9.35 (br s, 1H); MS (DCIlNH3) m/e 350 (M+H)+; Anal. calcd for C2oH23NsO~0.20 HZO: C, 68.04; H, 6.68; N, 19.84. Found: C, 67.89; H, 6.54; N, 19.88.
Example 20 N-(3-chlorophenyl)-2-f 4-(3-cyano-2-pyridinyl)-1-piperazinyll acetamide The procedure described in Example 8 was followed, substituting 3-chloro-N
(chloroacetyl)aniline (Maybridge) for N-chloroacetyl-3-nitroaniline to provide the title, compound (79% yield) as a light tan solid. mp 108-109 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.23 (s, 2H), 3.69 (m, 4H), 6.93 (dd, 1H, J=7.8, 4.8 Hz), 7.12 (m, 1H), 7.34 (dd, 1H, J=8.1, 8.1 Hz), 7.57 (m, 1H), 7.86 (m, 1H), 8.07 (dd, 1H, J=7.8; 2.0 Hz), 8.42 (dd, 1H, J=4.7, 2.0 Hz), 9.96 (br s, 1H); MS (DCI/NH3) m/e 356 (M+H)+; Anal. calcd for C18H1gC1N5O: C, 60.76; H, 5.10; N, 19.68. Found: C, 60.71; H, 5.09; N, 19.58.
Example 21 N-(3-chloro-4-fluorophen~~2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide The procedure described in Example 8 was followed, substituting 3-chloro-N-(chloroacetyl)-4-fluoroaniline (Maybridge) for N-chloroacetyl-3-nitroaniline, to provide the title compound (39% yield) as a light tan solid. mp 137-140 °C; 1H NMR
(300 MHz, DMSO-d6) 8 2.67 (m, 4H), 3.22 (s, 2H), 3.69 (m, 4H), 6.93 (dd, 1H, J=7.5, 4.8 Hz), 7.37 (dd, 1H, J=9.1, 9.1 Hz), 7.61 (ddd, 1H, J=9.2, 4.5, 2.8 Hz), 7.98 (dd, 1H, J=7.2, 2.8 Hz), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.41 (dd, 1H, J=4.8, 1.7 Hz), 9.98 (br s, 1H); MS (DCI/NH3) m/e 374 (M+H)+; Anal. calcd for CIgHI~C1FN50: C, 57.84; H,~4.58; N, 18.73. Found: C, 57.98; H, 4.42; N, 18.65.
Example 22 2-~4-(3-cyano-2-~yridinyl)-1-piperazinyl]-N-(3,4,5-trimethoxyphenyl)acetamide Example 22A .
2-chloro-N-(3 ,4, 5-trimetho~henyl) acetamide 3,4,5-Trimethoxyaniline (Aldrich, 4.06 g, 22.2 mmol) and chloroacetyl chloride (2.60 mL, 32.7 mmol) in toluene (50 mL) were heated at 100 °C for 24 hours.
The mixture was allowed to cool to room temperature and the volatiles were removed under reduced pressure.
The residue was taken up in toluene and concentrated (3x) to remove traces of starting acid chloride and placed under high vacuum to provide 5.26 g (91 %) of the title compound as a light brown solid. iH NMR (500 MHz, DMSO-d6) ~ 3.62 (s, 3H), 3.74 (s, 6H), 4.21 (s, 2H), 6.96 (s, 2H), 10.19 (br s, 1H); MS (DCI/NH3) m/e 260 (M+H)+.
Example 22B
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,4,5-trimethoxyphenyl)acetamide The procedure described in Example 8 was followed, substituting Example 22A
for N-chloroacetyl-3-nitroaniline; to provide the title compound (69% yield) as a light tan solid.
mp 123-124 °C; 1H NMR (300 MHz, DMSO-d6) ~ 2.68 (m, 4H), 3.19 (s, 2H), 3.61 (s, 3H), 3 .69 (m, 4H), 3.74 (s, 6H), 6.93 (dd, 1 H, J=7.8, 4.7 Hz), 7.07 (s, 2H), 8.07 (dd, 1 H, J=7.4, 1.7 Hz), 8.42 (dd, 1H, J=4.8, 2.1 Hz), 9.67 (br s, 1H); MS (DCI/NH3) m/e 412 (M+H)+; Anal.
calcd for C21H2sNs0: C, 61.30; H, 6.12; N, 17.02. Found: C, 61.27; H, 6.08; N, 16.95.
Example 23 2-f 4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-fluoro-3 ~trifluorometh~)phenyllacetamide Exarn lp a 23A
2-chloro-N-(4-fluoro-3-trifluoromethylphenyl) acetamide The procedure described in Example 16A was followed, substituting 4-fluoro-3-(trifluoromethyl)aniline (Acros) for 3,5-dimethylaniline, to provide the title compound (79%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) S 4.29 (s, 2H), 7.50 (dd, 1H, J=9.8, 9. 8 Hz), 7. 85 (m, l H), 8.08 (dd, 1 H, J=6.5, 2.7 Hz), 10.64 (br s, 1 H).
Example 23B
2-f4-(3-cyano-2-pyridinyll-1-piperazinyl]-N-[4-fluoro-3~trifluoromethyl)phenyllacetamide The procedure described in Example 8 was followed, substituting the product from Example 23A for N-chloroacetyl-3-nitroaniline, to provide the title compound (47% yield) as a white solid. mp 120-122 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.24 (s, 2H), 3.69 (m, 4H), 6.93 (dd, 1H, J=8.1, 5.1 Hz), 7.48 (dd, 1H, J=10.2, 10.2 Hz), 7.97 (m, 1H), 8.07 (dd, 1H, J=7.1, 2.0 Hz), 8.16 (dd, 1H, J=6.8, 2.7 Hz), 8.42 (dd, 1H, J=4.8, 2.0 Hz), 10.1 (br s, 1H); MS (DCI/NH3) m/e 408 (M+H)+; Anal. calcd for C19H»F4N50: C, 56.02; H, 4.21; N, 17.19. Found: C, 55.94; H, 4.14; N, 17.31.
Example 24 ~4-(3-cyano-2=pyridin~~piperazinyl~]-N-[3-fluoro-5-(trifluoromethyl)phenyl]acetamide Example 24A
2-chloro-N-(3-fluoro-5-trifluoromethylphen~) acetamide The procedure described in Example 16A was followed, substituting 3-fluoro-5-(trifluoromethyl)aniline (Oakwood) for 3,5-dimethylaniline, to provide the title compound (79% yield) as a white solid. 1H NMR (300 MHz, CDC13) 8 4.22 (s, 2H), 7.14 (m, 1H), 7.49 (br s, 1H), 7.76 (ddd, 1H, J=10.1,,2.0, 2.0 Hz), 8.37 (br s, 1H).
Example 24B
2-[4-(3-cyano-2-p~yl)-1-piperazinyll-N-[3-fluoro-5-(trifluoromethyl)pheny~
acetamide The procedure described in Example 8 was followed, substituting the product from Example 24A for N-chloroacetyl-3-nitroaniline, to provide the title compound (41 % yield) as a white solid. mp 108-110 °C; IH NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.26 (s, 2H), 3.70 (m, 4H), 6.93 (dd, 1H, J=7.8, 4.7 Hz), 7.36 (m, 1H), 7.93 (m, 2H), 8.08 (dd, 1H, 7.7, 2.0 Hz), 8.42 (dd, 1H, J=4.7, 2.0 Hz), 10.28 (br s, 1H); MS (DCI/NH3) m/e 408 (M+H)+; Anal.
calcd for C19H1~F4N50: C, 56.02; H, 4.21; N, 17.19. Found: C, 56.17; H, 4.11;
N, 17.43.
Example 25 2-[4-(3-cyano-2-pyridine)-1-piperazinyl]-N-[2-fluoro-5-(trifluoromethyl)phenylJacetamide Example 25A
2-chloro-N-(2-fluoro-5-(trifluorornethyl)phenyl)acetamide The procedure described in Example 22A was followed, substituting 2-fluoro-5-(trifluoromethyl)aniline (Acros) for 3,4,5-trimethoxyaniline, to provide the title compound (66% yield) as a tan solid. ~H NMR (300 MHz, DMSO-db) ~ 4.40 (s, 2H), 7.58 (m, 2H), 8.38 (dd, 1 H, J=7.4, 2.0 Hz), 10.42 (br s, 1 H).
Example 25B
2-[4-(3-cvano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-5-(trifluoromethyl)phe ~lLacetamide The procedure described in Example 8 was followed, substituting the product from Example 25A for N-chloroacetyl-3-nitroaniline to provide the title compound (61% yield) as a white solid. mp 130-133 °C; 1H NMR (300 MHz, DMSO-d6) b 2.73 (m, 4H), 3.31 (s, 2H), 3.67 (m, 4H), 6.94 (dd, 1H, J=7.8, 5.1 Hz), 7.56 (m, 2H), 8.08 (dd, 1H, J=7.5, 2.1 Hz), 8.42 (m, 2H), 9.91 (br s, 1H); MS (DCI/NH3) m/e 408 (M+H)+; Anal. calcd for CI9Hi7FaNs0: C, 56.02; H, 4.21; N, 17.19. Found: C, 55.88; H, 4.14; N, 17.15.
Example 26 ' 2-f4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-fluoro-3-(trifluorometh~l)phenyl]acetamide Example 26A
2-chloro-N-(2-fluoro-3-trifluoromethxlphenyl)acetamide The procedure described in Example 22A was followed, substituting 2-fluoro-3-(trifluoromethyl)aniline (Acros) for 3,4,5-trimethoxyaniline, to provide the title compound (72% yield) as a white solid. 1H NMR (300 MHz, DMSO-db) 8 4.39 (m, 2H), 7.41 (dd, 1H, J=8.2, 8.2 Hz), 7.57 (dd, 1H, J=6.5 Hz), 8.18 (dd, 1H, J=7.1 Hz), 10.37 (br s, 1H).
Example 26B
2-~4-(3-cyano-2-pyridin~)-1-piperazinyl]-N-'[2-fluoro-3-(trifluoromethyl phen~]acetamide The procedure described in Example 8 was followed, substituting the product from Example 26A for N-chloroacetyl-3-nitroaniline, to provide the title compound (66% yield) as a white solid. mp 118-121 °G; 1H NMR (300 MHz, DMSO-db) & 2.72 (m, 4H), 3.30 (s, 2H), 3.68 (m, 4H), 6.94 (dd, 1H, J=7.5, 4.8 Hz), 7.40 (dd, 1H, J=8.1, 8.1 Hz), 7.54 (m, 1H), 8.08 (dd, 1H, J=7.8, 2.0 Hz), 8.23 (dd, 1H, J=8.5, 8.5 Hz), 8.42 (dd, 1H, J=5.1, 2.1 Hz), 9.90 (br s, 1H); MS (DCI/NH3) m/e 408 (M+H)+; Anal. calcd for C19H»F4N50: C, 56.02; H, 4.21; N, 17.19. Found: C, 55.82; H, 4.20; N, 17.18.
Example 27 2-[4-(3-cyano-2-p ry idinyl)-1-piperazinyl]-N-(4-fluoro-3-methylphenyl)acetamide Example 27A
2-chloro-N-(4-fluoro-3-meth,~lphen~)acetarnide The procedure described in Example 16A was followed, substituting 4-fluoro-3-methylaniline (Lancaster) for 3,5-dimethylaniline, to provide the title compound (83% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 2.21 (d, 3H, J=2.1 Hz), 4.23 (s, 2H), 7.10 (dd, 1H, J=9.2, 9.2 Hz), 7.40 (m, 1H), 7.49 (dd, 1H, J=7.1, 2.4 Hz), 10.25 (br s, 1H); MS
(DCI/NH3) m/e 219 (M+NH4)+.
Example 27B
2-f4-(3-cyano-2-pyridinyl)-1-uiperazinyl]-N-(4-fluoro-3-methylphenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 27A for N-chloroacetyl-3-nitroaniline~ to provide the title compound (67% yield) as a light tan solid.. mp 111-113 °C; 1H NMR (300 MHz, DMSO-d6) S 2.21 (d, 3H, J=1.7 Hz), 2.67 (m, 4H), 3.19 (s, 2H), 3.68 (m, 4H), 6.93 (dd, 1H, J=7.6, 4.8 Hz), 7.07 (dd, 1H, J=9.2, 9.2 Hz), 7.49 (m, 1H), 7.55 (m, 1H), 8.07 (dd, 1H, J=7.5, 2.1 Hz), 8.41 (dd, 1H, J=4.7, 2.0 Hz), 9.74 (br s, 1H); MS (DCI/NH3) m/e 354 (M+H)+; Anal. calcd for Cl9HzoFNsO:
C, 64,57;
H, 5.70; N, 19.82. Found: C, 64.34; H, 5.73; N, 19.83.
Example 28 2-(4-(3-cyano-2-pyridinyl)-1-piperazinyl]''-N-(2-fluorophenyl)acetamide Example 28A
2-chloro-N-(2-fluorophenyl)acetamide The procedure described in Example 22A was followed, substituting 2-fluoroaniline (Aldrich) for 3,4,5-trimethoxyaniline, to provide the title compound (88%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) ~ 4.35 (s, 2H), 7.23 (m, 3H), 7.87 (m, 1H), 10.17 (br s, 1H); MS (DCI/NH3) m/e 188 (M+H)+.
Example 28B
2-[4-(3-c a~pyridinyl)-1-piperazinyl~-N-(2-fluorophenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 28A for N-chloroacetyl-3-nitroaniline, to provide the title compound (42% yield) as a white solid. mp 78-79 °C; 1H NMR (300 MHz, DMSO-d6) b 2.71 (m, 4H), 3.27 (s, 2H), 3.67 (m, 4H), 6.94 (dd, 1H, J=7.8, 4.8 Hz), 7.18 (m, 2H), 7.26 (m, 1H), 7.98 (m, 1H), 8.08 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=5.1, 2.1 Hz), 9.65 (br s, 1H); MS
(DCIlNH3) mle 340 (M+H)+; Anal. calcd for C18H18FN50: C, 63.70; H, 5.35; N, 20.64. Found: C, 63.48; H, 5.32;
N, 20..54.
Example 29 2-[4-(3-cyano-2-pyridin~~piperazinyl]-N-(2-methoxyphen~)acetamide Example 29A
2-chloro-N-(2-methoxyphenyl)acetamide The procedure described in Example 22A was followed, substituting 2-methoxyaniline (Acros) for 3,4,5-trimethoxyaniline, to provide the title compound (83%
yield) as a brown solid. IH NMR (300 MHz, DMSO-d6) 8 3.85 (s, 3H), 4.38 (s, 2H), 6.92 (m, 1H), 7.08 (m, 2H), 7.91 (d, 1H, J=7.8 Hz), 9.48 (br s, 1H); MS (DCI/NH3) m/e 200 (M+H)+.
Example 29B
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]',-N-(2-methoxyphenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 29A for N-chloroacetyl-3-nitroaniline, to provide the title compound (34% yield) as a white solid. mp 174-175 °C; 1H NMR (300 MHz, DMSO-d6) 6 2.71 (rn, 4H), 3.22 (s, 2H), 3.70 (m, 4H), 3.88 (s, 3H), 6.96 (m, 2H), 7.07 (m, 2H), 8.10 (dd, 1H, J=7.8, 2.1 Hz); 8.21 (d, 1H, J=7.8 Hz), 8.44 (dd, 1H, 4.7, 1.7 Hz), 9.73 (br s, 1H); MS (DCI/NH3) m/e 352 (M+H)+;
Anal. calcd for C19HZIN502: C, 64.94; H, 6.02; N, 19.93. Found: C, 64.70; H, 5.95; N, 19.71.
Example 30 2-[4-(3-cyano-2-pyridinyl)-1-piperazinyll-N-(2-nitrophenYl)acetamide Example 30A
2-chloro-N-(2-nitrophenyl)acetamide The procedure described in Example 22A was followed, substituting 2-nitroaniline (Aldrich) for 3,4,5-trirnethoxyaniline to provide the title compound (94%
yield) as a yellow solid. IH NMR (300 MHz, DMSO-d6) 8 4.38 (s, 2H), 7.41 (ddd, 1H, J=8.1, 7.1, 1.7 Hz), 7.77 (m, 2H), 8.03 (dd, 1H, J=8.2, 1.4 Hz), 10.68 (br s, 1H); MS (DCI/NH3) mle 232 (M+NH4)+.
Example 30B
2-(4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-nitrophenyl)acetamide The procedure described in Example 8 was followed, substituting the product from Example 30A for N-chloroacetyl-3-nitroaniline, to provide the title compound (39°!° yield) as a yellow solid. mp 134-136 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.75 (m, 4H), 3.29 (s, 2H), 3 .72 (in, 4H), 6.96 (dd, 1 H, J=7.8, 4.8 Hz), 7.32 (ddd, 1 H, J=8.5, 7.1, 1.4 Hz), 7.78 (ddd, 1 H, J=8:8, 7.4, 1.6 Hz), 8.10 (dd, 1 H, J=7. 8, 2.1 Hz), 8.20 (dd, 1 H, J=8.2, 1.4 Hz), 8.44 (dd, 1 H, J=5.1, 2.0 Hz), 8.61 (dd, 1H, J=8.5, 1.4 Hz), 11.55 (br s, 1H); MS (DCI/NH3) m/e 367 (M+H)+; Anal. calcd for C18H18N60: C, 59.01; H, 4.95; N, 22.94. Found: C, 58.87; H, 5.01;
N, 23.08.
Example 31 2-f4-(3-cyano-2-p rr~yl)-1-piperazin~]-N-[2-(trifluoromethyl)phen~]acetamide The procedure described in Example 8 was followed, substituting N-chloroacetyl-(trifluoromethyl)aniline (Apollo) for N-chloroacetyl-3-nitroaniline to provide the title compound' (47% yield) as a colorless oil. 1H NMR (300 MHz, DMSO-d6) 8 2.74 (m, 4H),-3.27 (s, 2H), 3.65 (m, 4H), 6.97 (dd, 1H, J=7.5, 4.8 Hz), 7.36 (dd, 1H, J=7.8, 7.8 Hz), 7.69 (d, 1H, J=7.5 Hz), 7.73 (dd, 1H, J=8.1, 8.1 Hz), 8.10 (dd, 1H, J=8.1, 2.0 Hz), 8.21 (d, 1H, J=8.5 Hz), 8.44 (dd, 1H, J=4.7, 2.3 Hz), 9.89 (br s, 1H); MS (DCI/NH3) m/e 390 (M+H)+. Maleate salt: white solid, mp 143-145 °C; Anal. calcd for C19H1gF3N50~1.0 C4H404: C, 54.65; H, 4.39; N, 13.86. Found: C, 54.61; H, 4:32; N, 13.83.
Example 32 N-phenyl-2-[4-(2-pyridinyl~-1-piperazinyl]acetamide N-Chloroacetylaniline (0.5 g, 2.95 mmol), 1-(2-pyridinyl)piperazine (0.72 g, 4.42 mmol), and N, N-diisopropylethylamine (1.03 mL, 5.9 mmol) were combined in toluene and heated at reflux overnight. The mixture was allowed to cool to room temperature, filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 60% ethyl acetate:hexanes) to provide 400 mg (46% yield) of the title compound as a hygroscopic white solid. 1H NMR (300 MHz, CDC13) ~ 2.60 (m, 4H), 3.18 (s, 2H); 3.55 (m, 4H), 6.65 (dd, 1H, J=12, 6 Hz), 6.85 (d, 1H, J=9 Hz), 7.05 (t, 1H, J=6 Hz), 7.3 (t, 2H, J=9 Hz), 7.51 (ddd, 1H, J=9, 7.5; 3 Hz) 7.68 (d, 2H, J=9 Hz) 8.1 (dd, 1H, J=6, 3 Hz) 9.75 (br s, 1H); MS (DCI/NH3) m/e 297 (M+H)+;
Anal. calcd for CI~HZON40: C, 68.89; H, 6.80; N, 18.90. Found: C~ 68.97; H, 6.87; N, 19.01.
EXample 33 N-(3-methXlphen~)-2-[4-( 1, 3-thiazol-2-yl~piperazinyl] acetamide Examt~le 33A
2-chloro-N-(3-methylphenyl)acetamide 3-Methylaniline (1 g, 9.3 mmol) in 2N aqueous sodium hydroxide (30 mL) was treated with chloroacetyl chloride (0.82 mL, 10.27 mmol) dropwise at room temperature as a solution in dichloromethane. After 18 hours, the reaction mixture was quenched with water and the layers separated. The organic phase was washed with an aqueous solution of 1N HCl and dried over MgS04, filtered and the filtrate concentrated under reduced pressure to provide 1.3 g (76%) of the title compound as a white solid. 1H NMR (300 MHz, CDCl3) 8 2.35 (s, 3H), 4.20 (s, 2H), 7.00 (s, 1H), 7.22 (m, 1H), 7.35-7.45 (rn, 2H), 8.15 (br s, 1H); MS
(DCI/NH3) m/e 201 (M+NH4)+.
Example 33B
1-(1,3-thiazol-2-yl)piperazine The procedure described in J. Med. Chem 1996, 39(7), 1431 was followed to provide the title compound. A mixture of 2-bromothiazole (3 g, 18.3 mmol) and piperazine (3.15 g, 36.6 mmol) was refluxed in n-butanol for 18 hours. The reaction mixture was allowed to cool to room temperature and concentrated under reduced pressure. The residue was treated with an aqueous solution of 10% KZC03 and extracted with ethyl acetate. The organic phase was dried over MgS04, filtered, and the filtrate concentrated under reduced pressure to provide 2.7 g (87%) of the title compound as brown oil used directly in the next step without further purification. IH NMR (300 MHz, CDCl3) ~ 2.99 (m, 4H), 3.47 (m, 4H), 6.57 (d, 1H, J=4.5 Hz), 7.20 (d, 1H, J=4.5 Hz); MS (DCI/NH3) m/e 170 (M+H)+.
Example 33C
N-(3-meth~phenyl)-2- [4-( 1 3-thiazol-2-yl)-1-piperazinvl] acetamide The product from Example 33A (0.2 g, 1.18 mmol), the product from Example 33B
(0.25g, 1.48 mmol) and N, N-diisopropylethylamine (0.41 mL, 2.3 rnmol) were combined in toluene (25 mL) and heated at reflux overnight. The reaction was allowed to cool to room temperature, filtered, and the filtrate was concentrated under reduced pressure. The residue was purifted by column chromatography on silica gel (elution with 50% ethyl acetate:hexanes) to provide 0.08 g (22%) of the desired material as a white solid. mp 151-153 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.65 (m, 4H), 3.20 (s, 2H), 3.48 (m~
4H), 6.85 (m, 2H), 7.18 (m, 2H), 7.48 (m, 2H), 9.65 (s, 1H); MS (DCI/NH3) m/e (M+H)+; Anal calcd for CI6HzoNøOS: C, 60.73; H, 6.37; N, 17.71. Found: C, 60.66; H, 6.24;
N, 17.35.
Example 34 2-[,4-(3-cyano-2-pyridinyl~ 1-piperazinyll-N-(4-methylphenyl)acetamide Example 34A
2-chloro-N-(4-methylQhenvl)acetamide The procedure described in Example 33A was followed, substituting 4-methylaniline for 3-methylaniline, to provide a white solid. 1H NMR (300 MHz, CDC13) 8 2.30 (s, 3H), 4.20 (s, 2H), 7.15 (d, 2H, J=9 Hz), 7.41 (m, 2H), 8.15 (br s, 1 H); MS
(DCI/NH3) m/e 201 (M+NH4)+.
Example 34B
2-[~3-cyano-2-pyridin~)-1-piperazinyl]-N-(4-methylphenyl)acetarnide The product from Example 34A (0.4 g, 2.18 mmol), 1-(2-cyanopyridinyl)piperazine (0.62 g, 3.3 mmol) and N, N-diisopropylethylamine (0.76 mL, 4.36 mmol) in toluene (50 mL) were heated at reflux. After 18 hours, the reaction mixture was allowed to cool to room temperature, filtered, and the filtrate was concentrated under reduced pressure. _ The residue purified by column chromatography on silica gel (elution with 60% ethyl acetate:hexanes) to provide 0.51 g (70%) of the desired material as a yellow oil. 1H NMR (300 MHz, CDCl3) S
2.30 (s, 3H), 2.80 (m, 4H), 3.25 (s, 2H), 3.80 (m, 4H), 6.80 (dd, 1H, J=12, 6 Hz), 7.12 (d, 2H, J=9 Hz), 7.48 (d, 2H, J=9 Hz), 7.80 (dd, 1 H, J=9, 3 Hz), 8.3 8 (dd, 1 H, J=6, 3 Hz), 9.10 (br, s, 1H); MS (DCI/NH3) m/e 336 (M+H)+; maleate salt: obtained as an off white powder; mp 156-158 °C ; Anal. calcd for C23HZSNsOs~0.20 HZO: C, 60.70; H, 5.63; N, 15.39. Found: C, 60.33; H, 5.55; N, 15.10. ~ .
Example 3 5 2-[4-(2-methoxyuhenyl)-1-piperidinyl]-N-(3-meth~phenyl)acetamide 4-(2-Methoxyphenyl)piperidine (200 mg, 1 mmol), the product from Example lA
(228 mg, 1 mmol) and N, N-diisopropylethylamine (0.185 mL, l .l mmol) in toluene (8 mL) were stirred at 60 °C for 18 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (30 mL). The organic layer was washed with brine (2 x 30 mL), dried over MgSOd, filtered and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with dichloromethane:methanol, 9.5:0.5) to provide the title compound 177 mg (52.3%). 1H NMR (300 MHz, DMSO-d~) 8 1.71 (m, 4H), 2.28 (m, 5H), 2.89 (m, 1H), 2.96 (m, 2H), 3.13 (s, 2H), 3.78 (s, 3H), 6.91 (m, 3H), 7.20 (m, 3H), 7.45 (m, 2H), 8.69 (s, 1H); MS (DCI/NH3) mle 339 (M+H)~.
Anal. calcd for CZIH26N2~2: C, 74.52; H, 7.74; N, 8.28. Found: C, 74.23, H, 7.71, N, 8.26.
.
Example 36 N-(3-meth~phenyl)-2-[4-(2-pyridin~l)-1-piperidinyl] acetamide Example 36A
benzyl 4-hydroxy-4-(2-pyridinyl)-1-piperidinecarbox 2-Bromopyridine (0.470 mL, 5 mmol) in THF (20 mL) was treated with n-BuLi 1.6M
in hexanes (5.2 ml, 5.2 mmol) dropwise at -60 °C. After stirring at -60 °C for 30 minutes, the reaction mixture and treated with benzyl 4-oxo-1-piperidinecarboxylate (1.14 g, 4.9 mmol) in THF (10 mL) slowly. After stirring an additional 15 minutes at -60 °C, the reaction mixture was quenched with a saturated aqueous solution of NH4Cl, allowed to warm to room temperature and was extracted into dichloromethane. The organics were combined, dried on MgS04, filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with hexanes:ethyl acetate, 1:1) to provide the title compound (400 mg, 27% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.54 (m, 2H), 2.05 (m, 2H), 3.25 (m, 2H), 3.95 (m, 2H), 5.11 (s, 2H), 5.35 (s, 1H), 7.25 (m, 1H), 7.35 (m, 5H), 7.68 (m, 1H), 7.79 (m, 1H), 8.5 (m, 1H); MS (DCM3).m/e 313 (M+H)+.
Example 36B
benzyl 3',6'-dihydro-2,4'-bipyridine-1'(2'H)-carbox~late The product from Example 36A (400 mg, 1.28 mmol) in thionyl chloride (6 mL) was refluxed for 3 hours, allowed to cool to room temperature, and concentrated under reduced pressure. The residue was treated with ice and 40% aqueous sodium hydroxide then extracted into dichloromethane, washed with brine, dried (NaZS04), filtered, and the filtrate concentrated under reduced pressure to provide the title compound (332 mg).
Example 36C
2-(4-piperidinyl)pyridine The product from Example 36B was treated with 10% Pd/C (250 mg) at 60 psi and °C for 40 hours to provide the title compound (150 mg, 88% yield). MS
(DCI/NH3) mle 163 (M+H)+.
Example 36D
N-(3-methylphen~)-2- f 4-(2-pyridinyl)-1-piperidin~l acetamide The product from Example 36C (200 mg, 1 mmol), the product from Example lA
(228 mg, 1 mmol) and N, N-diisopropylethylamine (0.185 mL, 1.1 mmol) in toluene (8 mL) were stirred at 60 °C for 18 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (20 mL). The organic layer was washed with brine (2 x 30 mL), dried over MgS04, filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with ethyl acetate:ethanol, 9.2:0.8) to provide the title compound (169 mg, 55%). 1H NMR (300 MHz, DMSO-d6) S
1.83 (m, 4H), 2.24 (m, SH), 2.64 (m, 1H), 2.98 (m, 2H), 3.12 (s, 2H), 6.88 (d, 1H, J=6 Hz), 7.20 (m, 2H), 7.30 (d, 1 H, J=6 Hz),. 7.45 (d, 2H, J=6 Hz), 7.71 (m, 1 H), 8.51 (m, 1 H), 9.59 (br s, 1H); MS (DCI/NH3) m/e 310 (M+H)+. Anal. calcd for C19H23N3O~O.1S HZO:
C, 73.12;
H, 7.52; N, 13.46. Found: C, 72.72, H, 7.24, N, 13.28.
Example 37 2-[4-(2-fluorophenyl)-1-~peridinyll-N-(3-methylphenyl)acetamide The procedure described in Example 35 was followed, substituting 4-(2-fluorophenyl)piperidine for 4-(2-methoxyphenyl)piperidine (89 mg, 80.9%
yield), to provide the title compound (89 mg, 80.9% yield). 1H NMR (300 MHz, DMSO-d6) S 1.72 (m, ZH), 1.85 (m, 2H), 2.29 (m, SH), 2.51 (m,,1H), 2.80 (m, 1H), 2.97 (rn, 2H), 3.12 (s, 2H), 6.88 (d, 1H, J=6 Hz), 7.19 (m, 4H), 7.42 (m, 3H), 9.61 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+.
Anal. calcd for CZpH23 '~2~~ C~ 73.59; H, 7.10; N, 8.58. Found: C, 7,3.49, H, 6.97, N, 8.30.

Example 3 8 N-(3-methylphen~)-2-[4~- 2-methylphenylLpiperidinyl]acetamide The procedure described in Example 35 was followed, substituting 4-(2-methylphenyl)piperidine for 4-(2-methoxyphenyl)piperidine, to provide the title compound (65 mg, 87.8% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.72 (m, 2H), 1.79 (m, 2H), 2.29 (m, 8H), 2.69 (m, 1H), 2.97 (m, 2H), 3.12 (s, 2H), 6.88 (d, 1H, J=6 Hz), 7.13 (m, 4H), 7.28 (d, 1H, J=6 Hz), 7.47 (m, 2H), 9.61 (br s, 1H); MS (DCI/NH3) m/e 323 (M+H)+.
Anal. calcd for CZ1H26N20: C, 78.22; H, 8.13; N, 8.69. Found: C, 77.86, H, 8.12, N, 8.51.
Example 39 2-f4-(3-fluorophen~)-1-piperidin~]-N-(3-methylphenyl)acetamide The procedure described in Example 35 was followed, substituting 4-(3-fluorophenyl)piperidine for 4-(2-methoxyphenyl)piperidine to provide the title compound (68 mg, 61.8% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.75 (m, 4H), 2.29 (m, 5H), 2.55 (m, 1H), 2.96 (m, 2H), 3.12 (s, 2H), 6.88 (d, 1H, J=6 Hz), 7.01 (m, 1H), 7.14 (m, 3H), 7.35 (m, 1H), 7.45 (m, 2H), 9.61 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+.
Example 40 N-(3-methylphen~,)-2-[4-(6-oxo-1 (6H)-pyridazinyl~piperidinyll acetarnide Example 40A
tert-butyl 4-(6-oxo-1~6H)-pyridazinyl)-1-piperidinecarboxylate tert-Butyl 4-bromo-1-piperidinecarboxylate (1.00 g, 3.78 mmol) in DMF (20 mL) was treated with KZC03 (523 mg, 3.78 mmol) and 3(2H)-pyridazinone (340 mg, 3.78 mmol) and then heated at 45 °C for 60 hours. The reaction mixture was allowed to cool to room temperature, poured into water (80 mL) and extracted with ethyl acetate (80 mL). The organic layer was washed with brine (3 x 50 mL), dried over MgS04, filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with hexanes:ethyl acetate, 3:1) to provide the title compound (180 mg, 17% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.41 (s, 9H), 1.66 (m, 4H), 2.91 (m, 2H), 4.05 (m, 2H), 4.96 (m, 1H), 6.93 (dd, 1H, J=1.5, 9.0 Hz), 7.39 (dd, 1H, J=3.0, 9.0 Hz), 7.95 (dd, 1H, J=3.0, 9.0 Hz); (MS (DCI/NH3) m/e 280 (M+H)+.
Example 40B
2-(4-piperidinyl,~ 3~2H)-pyridazinone The product from Example 40A (180 mg, 0.6 mmol) in dichloromethane (5 mL) was cooled to 0 °C and treated with trifluoroacetic acid (TFA) (0.46 mL, 6 mmol). After stirring at 0 °C for 3 hours, the reaction mixture was allowed to warm to room temperature and stirred an additional 3 hours. The reaction mixture was concentrated under reduced pressure and the residue was azeotroped with toluene (2 x 30 mL) to provide the title compound as the TFA salt (180 mg). iH NMR (300 MHz, DMSO-d6) 8 2.05 (m, 4H), 3..14 (m, 2H), 3.4 (m, 2H), 5.0 8 (m, 1 H), 6:97 (dd, 1 H, J=1.5, 9.0 Hz), 7.43 (dd, 1 H, J=3.0, 9.0 Hz), 8.0 (dd, 1 H, J=3.0, 9.0 Hz), 8:36 (br s, 1H), 8.70 (br s, 1H); (MS (DCI/NH3) m/e 180 (M+H)+.
Example 40C
N-(3-meth~phen~l~2-[4-(6-oxo-1 (6H)-pyridazinyl)-1-piperidin~]acetamide The product from Example 40B, as the TFA salt, (80 mg, 0.27 mmol), the product from Example lA (0.062 g, 0.27 mmol), and KaC03 (0.113 g, 0.81 mmol) were combined in toluene (8 mL) and stirred at room temperature for 18 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (20 mL). The organic layer was washed with brine (2 x 30mL), dried over MgS04, filtered, and the filtrate concentrated under reduced pressure. The,residue was purified by flash chromatography using ethyl acetate:ethanol, 9.7:0.3 to provide the title compound (89 mg, (100°f° yield). 1H NMR (300 MHz, DMSO-d6) & 1.74 (m, 2H), 2.01 (m, 2H), 2.29 (s, 3H), 2.35 (m, 2H), 3.0 (m, 2H), 3.15 (s, 2H), 4.78 (m, 1H), 6.88 (d, 1H, J=7.5 Hz), 6.93 (dd, 1H, J=1.5, 9.0 Hz), 7.19 (t, 1H J=7.5 Hz), 7.38 (dd, 1H, J=3.0, 9.0 Hz), 7.43 (d, 2H, J=7.5 Hz), 7.98 (dd, 1H, J=3.0, 9.0 Hz), 9.31 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+.
Example 41 N-(2,6-dimethylphenyl)-2-~4-(2-thienylLpiperidinyl] acetamide 4-(2-Thienyl)piperidine hydrochloride (22 mg, 0.11 mmol), 2-chloro-N-(2,6 dimethylphenyl)acetamide (24 mg, 0.12 mmol), and sodium carbonate (50 mg) in N,N-dimethylformamide:water (2:1, 2 mL) was shaken at ambient temperature for 18 hours. The resulting mixture was concentrated under reduced pressure. The residue was purified by preparative HPLC to provide the title compound as a trifluoroacetic acid salt (30 mg, 62%
yield). 1H NMR (300 MHz, DMSO-d6) 8 2.00 (m, 2H), 2.19 (s, 6H), 2.20 (m, 2H), 3.15-3.30 (m, 3H), 3.60 (m, 2H), 4.22 (s, 2H), 6.97 (m, 1H), 7.00 (m, 1H), 7.16 (m, 3H), 7.40 (d, 1H, J=3 Hz), 9.85 (br s, 1H), 9.95 (s, 1H); MS (ESI APCI+) m/e 329 (M+H)+.
Example 42 N-(2,5-dimeth~phenyl~[4-(2-thienyl)-1-piperidinyllacetamide The procedure described in Example 41 was followed, substituting 2-chloro-N-(2,5-dimethylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (35 mg, 72% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.00 (m, 2H), 2.19 (s, 3H), 2.20 (m, 2H), 2.25 (s, 3H), 3.18-3.30 (m, 3H), 3.60 (m, 2H), 4.20 (s, 2H)~
6.97 (m, 1H), 7.00 (m, 2H), 7.18 (d, 1 H, J=6 Hz), 7.22 (s, 1 H), 7.40 (d, 1 H, J=3 Hz), 9.80 (br s, 1 H), 9.90 (s, 1H); MS (ESI APCI+) xn/e 329 (M+H)+.
Example 43 N-(2-methylphen~)-2-f 4-(2-thienyl)-1-p~eridinyl] acetamide The procedure described in Example 41 was followed, substituting 2-chloro-N=(2, methylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (30 mg, 64% yield). 1H NMR (300 MHz, DMSO-d6) b 2.00 (m, 2H), 2.20 (m, 2H), 2.22 (s, 3H), 3.18-3.30 (m, 3H), 3.60 (m, 2H), 4.20 (s, 2H), 6.97 (m, 1H), 7.00 (m, 1H), 7.18 (m, 1H), 7.22 (m, 1H), 7.28 (m, 1H), 7.40 (m, 2H), 9.82 (br s, 1H), 10.00 (s, 1H); MS
(ESI APCI+) m/e 315 (M+H)+.
Example 44 N-(3-chloro-4-fluorophenyl)-2-[4-(2-thienYl)-1-piperidinyl] acetamide The procedure described in Example 41 was followed, substituting 2-chloro-N-(3-chloro-4-fluorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl) acetamide, to provide the title compound (29 mg, 57% yield). IH NMR (300 MHz, DMSO-d6) S 2.00 (m, 2H), 2.20 (m, 2H), 3.18-3.30 (m, 3H), 3.60 (m, 2H), 4.20 (s, 2H), 6.97 (m, 1H), 7.00 (m, 1H), 7.42 (m, 3H), 7.95 (d, 1H, J=3 Hz), 9.90 (br s, 1H), 10.75 (br s, 1H); MS (ESI APCI+) m/e 353 (M+H)+.
Example 45 N-(4-bromophenyl~[~2-p ridinyl)-1-p~eridinyl]acetamide The product from .Example 36C (hydrochloride, 20 mg, 0.10 mmol), N-(4-bromophenyl)-2-chloroacetamide (27 mg, 0.11 mmol), and sodium carbonate (50 mg) in DMF:water (2:1, 2 mL) was shaken at ambient temperature for 18 hours. The resulting mixture was decanted and concentrated under reduced pressure. The residue was purified by preparative HPLC to provide the title compound as a trifluoroacetic acid salt (34 mg, 70.9%
yield). 1H NMR (500 MHz, DMSO-d6) 8 2.10 (rn, 4H), 3.02 (m, 1H), 3.26 (m, 2H), 3.62 (m, 2H), 4.21 (s, 2H), 7.28 (m, 2H), 7.56 (m, 4H), 7.82 (t, 1H, J=6 Hz), 8.26 (d, lH, J=6 Hz), 9.90 (br s, 1H), 10.20 (br s, 1H); MS (ESI APCI+) m/e 373 (M - H)+.
Example 46 N-(2, 6-dimethylphenyll-2-[4-(2-pyridinyl)-1-piperidin~] acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (31 mg, 70.3% yield). IH NMR (500 MHz, DMSO-db) S 2.10 (m, 4H), 2.18 (s, 6H), 3.02 (rn, 1H), 3.31 (m, 2H), 3.62 (m, 2H), 4.25 (s, 2H), 7.12 (m, 3H), 7.32 (t, 1H, J=4 Hz), 7.28 (d, 1H, J=6 Hz), 7.82 (t, 1H, J=6 Hz), 8.66 (d, 1H, J=4 Hz), 9.90 (br s, 1H), 9.98 (s, 1H); MS (ESI APCI+) m/e 324 (M+H)+.
Example 47 N-(2-nitrophenyl)-2-[4-(2-pyridinvl)-1 piperidinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2-nitrophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (43 mg, 90% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.10 (m, 4H), 3.02 (m, 1H), 3.31 .(m, 2H), 3.62 (m, 2H), 4.25 (s, 2IT), 7.22 (m, 2H), 7.45 (t, 1H, J=4 Hz), 7.65 (m, 1 H), 7. 80 (rn, 2H), 8.01 (d, 1 H, J=6 Hz), 8. 5 8 (d, 1 H, J=4 Hz), 10.00 (br s, 1 H), 11.02 (s, 1H); MS (ESI APCI+) m/e 341 (M+H)+.

Example 48 N-(3-nitrophenyl)-2-[4-(2-pyridinvl)-1-~iperidinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(3-nitrophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (25 mg, 55% yield). IH NMR (500 MHz, DMSO-d6) 8 2.10 (m, 4H), 3.02 (m, 1H), 3:31 (m, 2H), 3.62 (m, 2H), 4.25 (s, 2H), 7.38 (m, 2H), 7.70 (t, 1H, J=6 Hz), 7.82 (t, 1H, J=4 Hz), 7.92 (d, 1 H, J=6 Hz), 9.02 (d, 1 H, J=4 Hz), 8.58 (d, 1 H, J=4 Hz), 8.65 (s, 1 H), 10Ø0 (br s, 1H), 11.12 (s, 1H); MS (ESI APCI+) m/e 341 (M+H)+.
Example 49 N-(2,4-difluorophenyl)~' 4-(2-pyridinyl)-1-piperidinyllacetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2,4-difluorophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (26 mg, 59% yield). 'H NMR (500 MHz, DMSO-d6) 8 2.08 (m, 4H), 3.02 (m, 1H), 3.31 (m, 2H), 3.62 (m, 2H), 4.20 (s, 2H), 7.15 (m, 1H), 7.28 (rn, 3H), 7.82 (m, 2H), 8.58 (d, 1H, J=4 Hz), 9.92 (br s, 1H), 10.52 (s, 1H); MS (ESI APCI+) m/e 332 (M+H)+.
Example 50 N-(2, 5-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidin~l acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2,5-dimethylphenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (12.2 rng, 28% yield). IH NMR (500 MHz, DMSO-d6) 8 2.10 (m, 4H), 2.18 (s, 3H), 2.28 (s, 3H),.3.05 (m, 1H), 3.31 (m, 2H), 3.65 (m, 2H), 4.25 (s, 2H), 6.98 (d, 1H, J=6 Hz), 7.15 (d, 1 H, J=6 Hz), 7.22 (s, 1 H), 7.3 8 (m, 2H), 7. 82 (t, 1 H, J=4 Hz), 8.5 8 (d, 1 H, J=4 Hz), 9.90 (br s, 1H), 9.98 (s, 1H); MS (ESI APCI+) mle 324 (M+H)+.
Example 51 N-(2-metl~lphenyl)-2-[4-(2-pyridinyl)-1-piperidiiZVl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2-methylphenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the. title compound (16 mg, 37% yield). 1H NMR (500 MHz, DMSO-d6) S 2.10 (m, 4H), 2.12 (s, 3H), 3.05 (m, 1H), 3.28 (m, 2H), 3.65 (m, 2H), 4.22 (s, 2H), 7.10 (m, 3H), 7.42 (m, 3H), 7.85 (t, 1H, J=4 Hz), 8.58 (d, 1H, J=4 Hz), 9.90 (br s, 1H), 9.98 (s, 1H); MS (ESI
APCT+) m/e 310 (M+H)+.
Exam lp e-52 N-(4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(4-methylphenyl) acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (29 mg, 68% yield). 'H NMR (500 MHz, DMSO-d6) 8 2.10 (m, 4H), 2.32 (s, 3H), 3.05 (m, 1H), 3.28 (m, 2H), 3.65 (m, 2H), 4.22 (s, 2H), 7.18 (d, 2H, J=6 Hz), 7.38 (t, 1H, J=4 Hz), 7.42 (d, 1H, J=4 Hz), 7.50 (d, 2H, J=6 Hz), 7.85 (t, 1H, J=4 Hz), 8.58 (d, 1H, J=4 Hz), 9.90 (br s, 1H), 10.55 (s, 1H); MS (ESI APCI+) m/e 310 (M+H)+.
Example 53 2-f 4-(2-pyridinyl)-1-piperidinyl]-N-[3-(trifluorometh~)phenyl] acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(3-trifluromethylphenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (34 mg, 71% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.05 (m, 4H), 2.95 (m, 1H), 3.28 (m, 2H), 3.65 (m, 2H), 4.12 (s, 2H), 7.22 (t, 1H, J=4 Hz), 7.35 (d, 1H, J=4 Hz), 7.42 (d, 1H, J=4 Hz), 7.60 (t, 1H, J=4 Hz), 7.75 (t, 1H, J=4 Hz), 7.85 (d, 1H, J=4 Hz), 8.12 (s, 1H), 8.52 (d, 1H, J=4 Hz), 9.95 (br s, 1H), 10.75 (br s, lH); MS (ESI APCI+) m/e 364 (M+H)+.
Example 54 ethyl 4-( f (4-(2-pyridinvl)-1-piperidinyl]'acetyllamino)benzoate The procedure described in Example 45 was followed, substituting ethyl 4-[(chloroacetyl)amino]benzoate for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (30 mg, 62% yield). 1H NMR (500 MHz, DMSO-d6) b 1.28 (t, 3H, J=4 Hz), 1.98 (m, 6H), 2.41 (m, 2H), 2.72 (m, 1H),,3.01 (m, 2H), 3.20 (s, 2H), 4.28 (dd, 2H, J=4, 4 Hz), 7.22 (t, 1H, J=3 Hz), 7.30 (d, 1H, J=4 Hz), 7.78 (m, 3H), 7.95 (d, 2H, J=3 Hz), 8.55 (s, 1H), 9.90 (br s, 1H), 10.55 (br s, 1H); MS (ESI APCI+) m/e 368 (M+H)+.
Example 55 N-(3-chloro-4-methylnhenyl)-2=[4-(2-pyridinyll 1 piperidinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(3-chloro-4-methylphenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (33 mg, 72% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.02 (m, SH), 2.28 (s, 3H), 2.91 (m, 1H), 3.28 (m, 3H), 4.02 (s, 2H), 7.22 (t, 1H, J=4 Hz), 7.35 (d, 1H, J=4 Hz), 7.45 (d, 1H, J=4 Hz), 7.75 (t, 2H, J=4 Hz), 7.80 (s, 1H), 8.52 (d, 1H, J=4 Hz), 9.95 (br s, 1H), 10.75 (br s, 1H); MS (ESI APCI+) m/e 344 (M+H)+, Exam lp a 56 N-(2-cyanophenyl)-2-(4-(2-pyridinyl)-1-piperidinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(2-cyanophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (27 mga 63% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.02 (m, 4H), 2.91 (m, 1H), 3.28 (m, 2H), 3.65 (m, 2H), 4.22 (s, 2H), 7.22-7.45 (m, 3H), 7.75-7.85 (m, 4H), 8.52 (rn, 1H), 9.95 (br s, 1H), 10.85 (br s, 1H); MS (ESI APCI+) m/e 321 (M+H)+, Example 57 N-(3-chlorophenyl)-2-(4-(2-pyridinyl)-1-pi eridinyl]acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(3-chlorophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (16 mg, 36% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.05 (m, 4H), 2.98 (m, 3H), 3.65 (m, 2H), 4.02 (s, 2H), 7.22 (t, 1H, J=4 Hz), 7.35 (d, 1H, J=4 Hz), 7.42 (d, 1H, J=4 Hz), 7.60 (t, 1H, J=4 Hz), 7.75 (t, 1H, J=4 Hz), 7.85 (d, 1H, J=4 Hz), 8.12 (s, 1H), 8.52 (d, 1H, J=4 Hz), 9.95 (br s, 1H), 10.75 (br s, 1H); MS (ESI APCI+) mle .330 (M+H)~.
Example 58 2-f4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(3 methylphenyl)acetamide Example 58A
benzyl 4-f ((trifluoromethyl)sulfonylloxy~-3 6-dihydro-1(2H) pyridinecarboxylate The title compound was prepared according to the procedure described in J.
Org.
Chem. 1998, 63, 8320. Benzyl 4-oxo-1-piperidinecarboxylate (0.5 g, 2.1 mmol) and N-phenytrifluoromethanesulfonimide (1.15 g, 3.2 rnmol) in tetrahydrofuran (10 mL) at-78 °C
was treated with lithium hexamethyldisilazide (2.14 mL, 2.1 mmol). After 4 hours at -78 °C, the mixture was quenched with water and extracted with a large excess of diethyl ether (3x).
The ethereal layers were combined, dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure. The residue was chromatographed on flash silica gel (20% ethyl acetate:hexanes) to provide the title compound (0.471 g, 60%
yield). IH NMR
(300 MHz, CDC13) ~ 2.47 (m, 2H), 3.72 (m, 2H), 4.13 (m, 2H), 5.16 (s, 2H), 5.78 (br m, 1H), 7.36 (m, SH); MS (ESI) m/e 366 (M+I~+.
Example 58B
benzyl 4-(4,4,5,5-tetramethyl-1 3 2-dioxaborolan-2-yl)-3 6-dih dro-1 2H) pyridinecarboxylate The title compound was prepared according to the procedure described in Tetrahedron Lett. 2000, 41 3705. Bis(pinacolato)diborane (338 mg, 1.33 mmol), potassium acetate (356 mg; 3.63 mmol), [1,1'-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (PdClZdppf;
30 mg~ 0.04 mmol), and l,1'-bis(diphenylphosphino)ferrocene (20 mg, 0.04 mmol) were combined and treated with the product from Example 58A (440 mg, 1.21 mmol) in degassed 1,4-dioxane (7 mL). The reaction mixture was heated at 80 °C for 16 hours, allowed to cool to 23 °C, diluted with water, and extracted with dichloromethane (3x).
The dichloromethane extracts were combined, dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure. The residue was chromatographed on flash silica gel (20% ethyl acetate:hexanes) to provide the title compound (323 mg, 78% yield). IH NMR
(300 MHz, .
CDCl3) 8 1.25 (s, 12H), 2.24 (m, 2H), 3.52 (dd, 2H, J=5.7, 5.7 Hz), 4.03 (dd, 2H, J=3, 6 Hz), 14 (s, 2H), 6.46 (br m, 1H), 7.32 (m, SH); MS (ESI) m/e 344 (M+H)+
Example 58C
benzyl 3-cyano-3' 6'-dihydro-2 4'-bipyridine-1~2'H)-carboxylate 4 4 5 5-tetramethyl 1 3 2 dioxaborolan-2-of complex The product from Example 58B (200 mg, 0.58 mmol), potassium carbonate (241 mg, 1.75 mmol), PdClZdppf (29 mg, 0.035 mmol), and 2-chloro-3-cyanopyridine (85 mg, 0.61 mmol) were combined in degassed N, N-dimethylformamide (4 mL). The reaction mixture was heated at 80 °C for 16 hours, allowed to cool to 23 °C, diluted with water, dichloromethane, and the layers separated. The aqueous phase was extracted with dichloromethane (2x). All the dichloromethane phases were combined, dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure. The residue was chromatographed on flash silica gel (50% ethyl acetate:hexanes) to provide the title compound sufficiently pure to carry on in further reactions (323 mg, 78%
yield). 1H NMR
(300 MHz, CDC13) 8 1.13 (s, 12H), 2.74 (br s, 2H), 3.75 (dd, 2H, J=6 Hz), 4.26 (m, 2H), 5.19 (s, 2H), 6.57 (br m, 1H), 7.32 (m, 6H), 7.98 (dd, 1H, J=1.8, 7.8 Hz), 8.76 (dd, 1H, J=1.8, 4.5 Hz); MS (ESI) m/e 320 (M+H)+.
Example 58D
2-(4-piperidinyl)nicotinonitrile A steady stream of H2 was bubbled through a stirred solution of the product from Example 58C (70 mg, 0.15 mmol), Pd/C (5 rng), and ethanol (2 mL) at 23 °C for 24 hours.
The HZ bubbling was stopped and Nz was bubbled through for a few minutes. The reaction mixture was passed through Celite and the filtrate concentrated under reduced pressure to provide the title compound sufficiently pure to carry into further reactions (30 mg). MS
(ESI) m/e 188 (M+H)~.
Exam lp a 58E
2-f4-(3-cyano-2-pyridinyl)-1-piperidinyll-N~3-methy~henyl)acetarnide The product from Example 58D, the product from Example lA (37 mg, 0.16 mmol), N, N-diisopropylethylamine (31 mg, 0.24 mmol), and toluene (3 mL) were combined and heated at 60 °C. After 16 hours, the mixture was allowed to cool to 23 °C and concentrated under reduced pressure. The residue was purified by thin layer chromatography (7% ethyl acetate:hexanes) to provide the title compound (9 mg, 17% yield). 1H NMR (400 MHz, DMSO-d6) ~ 1.79 (br d, 2H, J=12 Hz), 2.02 (m, 2H), 2.27 (s, 3H), 2.32 (m, 2H), 3.04 (m, 3H), 3.16 (s, 2H), 6.88 (bd, 1H, J=8 Hz), 7.18 (dd, 1H, J=7.2, 7.2 Hz), 7.45 (m, 3H), 8.26 (dd, 1H, J=1, 2 Hz), 8.82 (dd, 1H, J=1, 4.4 Hz), 9.58 (s, 1H); MS (APCI/ESI) m/e 335 (M+H)~.
Example 59 N-(3-methylphenyl)-2-(4-phenyl-3,6-dihydro-1 (2H)-pyridinyl)acetamide The procedure described in Example 35 was followed, substituting 4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride for 4-(2-methoxyphenyl)piperidine, to provide the title compound (180 mg, 39% yield). 1H NMR (300 MHz, DMSO-d6) b 2.27 (s, 3H), 2.55 (m, 2H), 2.78 (t, 2H, J=6 Hz), 3.26 (m, 4H), 6.18 (m, 1H), 6.88~(m, 1H). 7.17 (t, 1H, J=7.5 Hz), 7.25 (m, 1H), 7.35 (m, 2H), 7.45 (m, 4H), 9.64 (s, 1H); MS (DCI/NH3) m/e 307 (M+H)+.
Anal. calcd for CZOHZZN20~0.10 H20: C, 77.94; H, 7.26; N, 9.09. Found: C, 77.72, H, 7.28, N, 9.03, Example 60 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-Y1~~3-meth~phenyl)acetamide The procedure described in Example 35 was followed, substituting 1',2',3',6'-tetrahydro-2,4'-bipyridine hydrochloride (Saari, W. S.; et al. J. Med. Chem.
1984, 27, 1182) for 4-(2-methoxyphenyl)piperidirie, to provide the title compound (210 mg, 53.8% yield). 1H
NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 2.65 (m, 2H), 2.78 (t, 2H, J=6 Hz), 3.25 (s, 2H), 3.30 (m, 2H), 6.71 (m, 1H), 6.88 (m, 1H). 7.18 (t, 1H, J=7.5 Hz), 7.23 (m, 1H), 7.45 (m, 2H), 7.55 (d, 1H, J=9 Hz), 7.75 (m; 1H), 8.53 (m, 1H), 9.64 (br s, 1H); MS (DCIM3) m/e 308 (M+H)+. Anal. calcd for C19Ha1N30~0.30 H20: C, 72.96; H, 6.96; N, 13.43.
Found: 72.73, H, 6.57, N, 13.47.
Example 61 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2 6-dimeth~phenyl)acetamide 1',2',3',6'-Tetrahydro-2,4'-bipyridine hydrochloride (22 mg, 0.11 mmol), 2-chloro-N-(2,6-dimethylphenyl)acetamide (24 mg, 0.12 mmol), and sodium carbonate (50 mg) in DMF:water (2:1, 2 mL) were combined and shaken at ambient temperature for 18 hours. The mixture was concentrated under reduced pressure. The residue was purified bypreparative HPLC to provide the title compound as a trifluoroacetic acid salt (43 mg, 90%
yield). 1H
NMR (300 MHz, DMSO-d~) 8 2.20 (s, 6H), 2.96 (br s, 2H), 3.43-3.63 (m, 2H), 4.03-4.20 (m, 2H), 4.39 (s, 2H), 6.72 (br s, 1H), 7.12 (m, 3H), 7.38 (m, 1H), 7.62 (d, 1H, J=6 Hz), 7.82 (m, 1H), 8.59 (m, 1H), 10.00 (m, 1H), 10,40 (br s, 1H); MS (ESI APCI+) m/e 322 (M+H)+.
Example 62 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-nitroplieny~acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2-nitrophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (27 mg, 54% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.93 (br s, 2H), 3.40-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.3 8 (s, 2H), 6.75 (br s, 1 H), 7.3 8 (m, 1 H), 7.48 (t, 1 H, J=6 Hz), 7.62 (m, 2H), 7.80 (t, 1H, J=6 Hz), 7.88 (t, 1H, J=6 Hz), 8.03 (m, 1H), 8.60 (br s, 1H), 10.44 (br s, 1H), 10.98 (br s, 1H); MS (ESI APCI+) m/e 339 (M+H)+.
Example 63 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-~3-nitrophen~l acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(3-nitrophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (48 mg, 97% yield). ,~H NMR (300 MHz, DMSO-d6) 8 2.96 (br s, 2H), 3.45-3.75 (m, 2H), 4.05-4.20 (m, 2H), 4.38 (s, 2H), 6.75 (br s, 1H), 7.38 (m, 1H), 7.66 (m, 2H), 7.89 (m, 2H), 8.00 (d, 1H, J=6 Hz), 8.60 (m, 1H), 8.63 (br s, 1H), 10.45 (br s, 1H), 11.08 (br s, 1H); MS (ESI APCI+) m/e 339 (M+H)+.
Example 64 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl~-N-(4-fluorophenyl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(4-fluorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (40 mg, 86% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.96 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.72 (br s, 1H), 7.22 (t, 2H, J=7 Hz), 7.38 (m, 1H), 7. 63 (m, 3 H), 7. 82 (m, 1 H), 8.60 (m, 1 H), 10.3 8 (br s, 1 H), 10. 62 (br s, 1 H); MS (ESI
APCI+) m/e 312 (M+H)+.
Example 65 N-(2 4-difluorophenyl)-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H) yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2,4-difluorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (45 mg, 92% yield). 1H NMR (300 MHz, DMSO-d6) s 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.74 (br s, 1H), 7.18 (t, 1H, J=7 Hz), 7.36 (m, 2H), 7.63 (m, 1H), 7.85 (m, 2H), 8.60 (m, 1H), 10.40 (br s, 1H), 10.45 (br s, 1H);
MS (ESI
APCI+) m/e 330 (M+H)+.
Example 66 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-~~(2 5-dimeth~phenyl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2,5-dimethylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (28 mg, 59% yield). IH NMR (300 MHz, DMSO-d6) b 2.20 (s, 3H), 2.25 (s, 3H), 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.74 (br s, 1H), 7.00 (d, 1 H, J=7 Hz), 7.18 (d, 1 H, J=7 Hz), 7.22 (s, 1 H), 7.3 8 (m, 1 H), 7.63 (d, 1 H, J=7 Hz), 7.82 (m, 1H), 8.60 (m, 1H), 9.92 (br s, 1H), 10.35 (br s, 1H); MS (ESI APCI+) m/e 322 (M+H)+.
Example 67 2-(3',6'-dihydro-2 4'-bipyridin-1'(2'Hwl)-N-(2-methylphenyl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2-methylphenyl)acetamide for 2-chloro-N-(2,6-dirnethylphenyl)acetamide, to provide the title compound (30 mg, 65% yield). IH NMR (300 MHz, DMSO-d6) 8 2.25 (s, 3H), 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.75 (br s, 1H), 7.18 (m,lH), 7.22 (m, 1 H), 7.28 (m, 1 H), 7.3 8 (m, 1 H), 7.43 (d, 1 H, J=7 Hz), 7.63 (d, 1 H, J=7 Hz), 7.82 (m, 1H), 8.60 (m, 1H), 9.96 (br s, 1H), 10.35 (br s, 1H); MS (ESI APCI+) m/e 308 (M+H)+.
Example 68 N-cyclohexyl-2-(3',6'-dihydro-2,4'-bi~yridin-1'(2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N
cyclohexylacetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, io provide the title compound (20 mg, 44% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.10-1.35 (m, SH), 1.60-1.80 (m, SH), 2.95 (br s, 2H), 3.45-3.70 (m, 3H), 4.00-4.20 (m, 2H); 4.35 (s, 2H), 6.68 (br s, 1 H), 7.3 8 (m, 1 H), 7.63 (d, 1H, J=7 Hz), 7. 82 (m, 1 H), 8.42 (d, 1 H, J=7 Hz), 8.60 (m, 1 H), 10.25 (br s, 1H); MS (ESI APCI+) m/e 300 (M+H)+.
Example 70 , 2-(3',6'-dihydro-2 4'-bi~yridin-1'(2'H)-yl~=(4-methv~henyl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(4-methylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (26 mg, 56% yield). IH NMR (300 MHz, DMSO-d6) 6 2.24 (s, 3H), 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.74 (br s, 1H), 7.19 (d, 2H, J=7 Hz), 7.3 8 (m, 1 H), 7.49 (d, 2H, J=7 Hz), 7.63 (d, 1 H, J=7 Hz), 7.82 (m, 1 H), 8.60 (m, 1 H), 10.35 (br s, 1H), 10.45 (br s, 1H); MS (ESI APCI+) m/e 308 (M+H)+.
Exam lp a 71 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'HLyI)-N-[3-(trifluorornethyl~phenyllacetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-[3-(trifluoromethyl)phenyl]acetamide for 2-chloro-N-(2,6-dimethylphenyl) acetamide, to provide the title compound (47 mg, 90% yield). iH NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.74 (br s, 1H), 7.38 (m, 1H), 7.49 (d, 1 H, J=6 Hz), 7.63 (m, 2H), 7.79 (d, 1 H, J=6 Hz), 7.82 (m, 1 H), 8.08 (s, 1 H), 8.60 (m, 1 H), 10.45 (br s, 1H), 10.98 (br s, 1H); MS (ESI APCI+) m/e 362 (M+H)+.
Example 72 ethyl4-((3',6'-dihydro-2,4'-bipyridin-1'(2'H)- ly-acetyl)amino]benzoate The procedure described in Example 61 was followed, substituting ethyl 4-[(chloroacetyl)amino]benzoate for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the.
title compound (51 mg, 97% yield). IH NMR (300 MHz, DMSO-d6) ~ 1.35 (t, 3H, J=7 Hz), 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.22 (q, 2H, J=7 Hz), 4.36 (s, 2H), 6. 74 (br s, 1 H), 7.3 8 (m, 1 H), 7. 62 (d, 1 H, J=6 Hz), 7.74 (d, 2H, J=8 Hz), 7. 82 (m, 1 H), 7.98 (d, 2H, J=8 Hz), 8.60 (m, 1H), 10.40 (br s, 1H), 10.92 (br s,' 1H); MS (ESI
APCI+) m/e 366 (M+H)+.
Example 73 N-f2-chloro-5-(trifluoromethyl)phenyl]'-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H) yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-[2-chloro-5-(trifluoromethyl)phenyl]acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the titleecompound (18 mg, 32% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.70 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 1H), 7.63 (m, 2H), 7.82 (m, 2H), 8.22 (s, 1H), 8.60 (m, 1H), 10.40 (br s, 1H), 10.50 (br s, 1H); MS
(ESI APCI+) m/e 396 (M+H)+.
Example 74 N-(3-chloro-4-methylphenyl)-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(3-chloro-4-methylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (44 mg, 88% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.30 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 3H), 7.63 (d, 1H, J=6 Hz), 7.80 (s, 1H), 7.83 (m~ 1H), 8.60 (m, 1H), 10.38 (br s, 1H), 10.63 (br s, 1H); MS (ESI APCI+) m/e 342 (M+H)~.
Example 75 N-(2-cyanophenyl)-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2-cyanophenyl)acetamide for 2-chloro-N-(2,6-dirnethylphenyl)acetamide, to provide the title compound (46 mg, 97% yield). IH NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.40 (s, 2H), 6.75 (br s, 1 H), 7.3 $ (m, 1 H), 7.42 (t, 1 H, J=6 Hz), 7.63 (m, 2H), 7.78 (m, 1H), 7.83 (m, 1H), 7.88 (rn, 1H), 8.60 (m, 1H), 10.42 (br s, 1H), 10.93 (br s, 1H);, MS (ESI APCI+) mle 319 (M+H)+.
Example 76 N-(3-chlorophenyl)-2-(3' 6'-dihydro-2 4'-bip 'din-1' 2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(3-chlorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (42 mg, 86% yield). IH NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H),~3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.34. (s, 2H), 6.75 (br s, 1H), 7.20 (d, 1H, J=6 Hz), 7.38 (m, 1H), 7.42 (m, 2H), 7.63 (d, 1H, J=6 Hz), 7.80 (s, 1H), 7.83 (m, 1H), 8.60 (m, 1H),.10.40 (br s, 1H), 10.80 (br s, 1H); MS (ESI APCI+) m/e 328 (M+H)+.
Example 77 N-(3-chloro-4-fluorophenyl)-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(3-chloro-4-fluorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (43 mg, 85% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3 .45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.3 8 (s, 2H), 6.73 (br ~s, 1 H), 7.3 8 (m, 1 H), 7.43 (m, 2H), 7.63 (d, 1 H, J=6 Hz), 7.83 (m, 1 H), 7.92 (d, 1 H, J=SHz), 8.60 (m, 1 H), 10.3 8 (br s, 1 H), 10.83 (br s, 1H); MS (ESI APCI+) m/e 346 (M+H)+.
Example 78 2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'HLy~-N-(4-(trifluoromethoxy)phenyl]acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-[4-(trifluoromethoxy)phenyl]acetamide for 2-chloro-N-(2,6-dimethylphenyl) acetamide, to provide the title compound (44 mg, 81% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 1H), 7.41 (d, 2H, J=7 Hz), 7.63 (d, 1H, J=6 Hz), 7.73 (d, 2H, J=7 Hz), 7.84 (m, 1H), 8.60 (m, 1H), 10.40 (br s, 1H), 10.80 (br s, 1H); MS (ESI APCI+) in/e 378 (M+H)+.
Example 79 2-(3',6'-dihydro-2 4'-bipyridin-1'(2'Hwl)-NUJ-2-(trifluoromethYl~phenyl]acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-[2-(trifluoromethyl)phenyl]acetamide 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (41 mg, 78% yield). 1H NMR (300 MHz, DMSO-d6) & 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.35 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 1H), 7.50-7.70 (m, 3H), 7.80-7.90 (m, 3H), 8.60 (m, 1H), 10.40 (s, 1H), 10.43 (br s, 1H); MS (ESI
APCI+) m/e 362 (M+H)+.
Example 80 N-(4-chlorophenyl)-2-(3' 6'-dihydro-2 4'-bipyridin-1'(2'HLyI)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(4-chlorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (39 mg, 80% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.30 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 1H), 7.44 (d, 2H, J=7 Hz), 7.63 (m, 3H), 7.83 (m, 1H), 8.60 (m, 1H), 10.40 (br s, 1H), 10.63 (s, 1H); MS
(ESI APCI+) m/e 328 (M+H)+.
Example 81 ' N-(2,3-dichlorophenyl)-2-(3' 6'-dihydro-2 4'-bi~yridin-1'(2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(2,3-dichlorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (37 mg, 70% yield). IH NMR (300 MHz, DMSO-d6) 8 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.40 (s, 2H); 6.73 (br s, 1H), 7.38 (m, 1H), 7.42 (t, 1H, J=7 Hz), 7.58 (d, 1H, J=7 Hz), 7.64 (d, 1H, J=7 Hz), 7.72 (d, 1H, J=7 Hz), 7.83 (m, 1H), 8.60 (m, 1H), 10.40 (s, 1H), 10.43 (br s, 1H); MS (ESI APCI+) m/e 363 (M+H)+.
Example 82 N-(3,5-dichlorophenyl)-2-(3' 6'-dihydro-2 4'-bip 'din-1' 2'H)-yl)acetamide The procedure described in Example 61 was followed, substituting 2-chloro-N-(3,5-dichlorophenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (31 mg, 59% yield). 1H NMR (300 MHz, DMSO-d6) b 2.95 (br s, 2H), 3.45-3.75 (m, 2H), 4.00-4.20 (m, 2H), 4.34 (s, 2H), 6.73 (br s, 1H), 7.38 (m, 1H), 7.40 (s, 1H), 7.63 (m, 3H), 7.83 (m, 1H), 8.60 (m, 1H), 10.40 (br s, 1H), 10.90 (s, 1H); MS (ESI
APCI+) m/e 363 (M+H)+.
Example 83 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-~~~4-fluoro-2-methylphenyl)acetamide The procedure described in Example 61. was followed, substituting 2-chloro-N-(4-fluoro-2-methylphenyl)acetamide for 2-chloro-N-(2,6-dimethylphenyl)acetamide, to provide the title compound (34 mg, 70% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.20 (s, 3H), 2.96 (br s, 2H), 3.43-3.63 (m, 2H), 4.03-4.20 (in, 2H), 4.39 (s, 2H), 6.72 (br s, 1H), 7.10 (m, 2H), 7.3 8 (m, 1 H), 7.43 (m, 1 H), 7. 64 (d, 1 H, J=7 Hz), 7. 84 (m, 1 H), 8.60 (m, 1 H), 10.00 (m, 1 H), 10.40 (br s, 1H); MS (ESI APCI+) m/e 326 (M+H)+, Example 84 N-(4-fluorophen~rl~=j4-(2-pyridinyl)-1-~iperidinyl)acetamide .

The procedure described in Example 45 was followed, substituting 2-chloro-N-(4-fluorophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (57.5 mg; 59% yield). 1H NMR (500 MHz, DMSO-d6) 8 2.15 (m, 4H), 3.01 (m, 1H), 3.26 (m, 2H), 3.65 (m, 2H), 4.18 (s, 2H), 7.22 (m, 2H), 7.35 (m, 2H), 7.58 (m, 2H), 7.82 (m, 1H), 8.60 (m, 1H), 9.95 (br s, 1H), 10.65 (br s, 1H); MS (ESI APCI+) m/e 314 (M+H)+.
Example 85 N-(3 , 5-dichlorophenyl)-2-(4-(2-p~ridinyl)-1-piperidinvl]' acetamide The procedure described in Example 45 was followed substituting 2-chloro-N-(4-fluorophenyl)acetarnide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (18.5 mg, 39% yield). IH NMR (500 MHz, DMSO-d6) 8 1.85 (m, 2H), 1.95 (m, 2H), 2.25 (m, 2H), 2.68 (m, 1H), 2.95 (m, 2H), 3.20 (s, 2H), 7.20 (m, 1H), 7.30 (m, 2H), 7.75 (m, 2H), 7.82 (s, 2H), 8.52 (s, 1H), 10.05 (br s, 1H); MS (ESI APCI+) m/e 365 (M+H)+.
Example 86 N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]'acetamide The procedure described' in Example 45 was followed, substituting 2-chloro-N-(2,3-dichlorophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (18 mg, 38% yield). 1H NMR (500 MHz, DMSO-d6) S 1.90 (m, 4H), 2.42 (m, 2H), 2.75 (m, 1H), 3.05 (m, 2H), 3.28 (s, 2H), 7.22 (t, 1H, J=3 Hz), 7.30 (d, 1H, J=3 Hz), 7.42 .(m, 3H), 7.75 (t, 1H, J=3 Hz), 8.25 (s,, 1H), 8.50 (s, 1H), 10.18 (br s, 1H); MS (ESI
APCI+) m/e 365 (M+H)+.
Example 87 2-f 4-(2-pyridinyl)-1-piperidinyl]-N-f 2-(trifluoromethyl)phenyl] acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-[2-.
(trifluoromethyl)phenyl]acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (22 mg, 46% yield). 1H NMR (500 MHz, DMSO-d6) 8 1.85 (m, 4H), 2.41 (m, 2H), 2.72 (m, 1H), 3.01 (m, 2H), 3.20 (s, 2H), 7.22 (t, 1H, J=3 Hz), 7.30 (d, 1H, J=3 Hz), 7.38 (m, 1H), 7.72 (m, 4H), 8.25 (br s, 1H), 8.50 (s, 1H), 9.98 (br s, 1H); MS
(ESI APCI+) m/e 3 64 (M+H)+.

Example 88 N-(3-chloro-4-fluoronhenyl)-2-[4-(2-pyridin~)-1-piperidin~] acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-(3-chloro-4-fluorophenyl)acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (19 mg, 43% yield). 1H NMR (500 MHz, DMSO-d6) 8 1.95 (m, 4H), 2.41 (m, 2H), 2.72 (m, 1H), 3.01 (m, 2H), 3.20 (s, 2H), 7.25 (t, 1H, J=3 Hz), 7.30 (d, 1H, J=3 Hz), 7.40 (t, 1H, J=3 Hz)~ 7.55 (s, 1H), 7.75 (t, 1H, J=3 Hz), 7.95 (t, 1H, J=3 Hz), 8.45 (s, 1H), 9.90 (br s, 1H), 10.35 (br s, 1H); MS (ESI APCI+) mle 348 (M+H)+.
Example 89 2-(4-(2-pyridinyl)-1-piperidinyll-N-[4-(trifluoromethoxy)phenyl] acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-[4-(trifluoromethoxy)phenyl]acetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (21 mg, 43% yield). 1H NMR (500 MHz, DMSO-d6) b 1.91 (m, 4H), 2.41 (m, 2H), 2.65 (m, 1H), 3.05 (m, 2H), 3.20 (s, 2H), 7.12 (m, 1H), 7.25 (m, 3H), 7.85 (m, 4H), 8.50 (s, 1H), 9.90 (br s, 1H); MS (ESI APCI+) m/e 380 (M+H)+, Example 90 N-Cyclohexyl-2-(3' 4' S' 6'-tetrahydro-2'H-[2 4! ~lbipyridinyl-1'-yl) acetamide The procedure described in Example 45 was followed, substituting 2-chloro-N-cyclohexylacetamide for N-(4-bromophenyl)-2-chloroacetamide, to provide the title compound (49 mg, 53% yield). 1H NMR (500 MHz, DMSO-d6) 8 1.10-1.35 (m, 6H), 1.55 (m, 1H), 1.70 (m, 2H), 1.79 (m, 2H), 2.08 (m, 4H), 2.98 (m, 1H), 3.18 (m, 2H), 3.68 (m, 2H), 3.88 (s, 2H), 7.38 (m, 2H), 7.82 (t, 1H, J=4 Hz), 8.45 (d, 1H, J=4 Hz), 8.58 (d, 1H, J=3 Hz), 9.70 (br s, 1H); MS (ESI APCI+) m/e 302 (M+H)+.
Example 91 N-f f4-(2-cyanophenyl)-1-piperazin~lmethyll-3-methylbenzamide Example 91 A
j(3-methylbenzoyl)amino~'methyl acetate N-(3-Methylbenzoyl)glycine (10 g, 51.7 mmol), lead tetraacetate (25.25 g, 56.94 mmol), and copper (II) acetate monohydrate (0.94 g, 5.17 mmol) were combined in toluene and heated at reflux overnight. ,The reaction mixture was to cool to room temperature, filtered through Celite and the fitlrate concentrated under reduced pressure.
The residue was purified by flash column chromatography on silica gel (elution with 25% ethyl acetate/hexanes) to provide the title compound (7.95 g, 74% yield). 'H NMR
(300 MHz, CDC13) cS 2.10 (s, 3H), 2.40 (s, 3H), 5.45 (d, 2H, J=9 Hz), 7.35 (m, 2H), 7.55 (m, 1H), 7.62 (s, 1H); MS (DCI/NH3) m/e 208 (M+H)+.
Exam lp a 91 B
N-f 4-(2-Cyanophenyl)piperazin-1-ylmethyl]'-3-methyl benzamide The product from Example 91A (4.00 g, 19.2 mmol), 1-(2-cyanophenyl)piperazine (3.6 g, 19.2 mmol), and triethylamine (5.3 ml, 38.4 mmol) were combined in acetonitrile (100 mL) and stirred overnight room temperature. The reaction mixture was concentrated under reduced pressure and the residue was purified by flash column chromatography on silica gel (elution with ethyl acetate) to provide the title compound as a colorless oil (2.85 g, 44%
yield). IH NMR (300 MHz, CDCl3) 8 2.40 (s, 3H), 2.90 (m, 4H), 3.25 (m, 4H), 4.45 (d, 2H, J=6 Hz), 6.66 (br s, 1H), 7.0 (m, 2H), 7.35 (m, 2H), 7.48 (m, 1H), 7.55 (m, 2H), 7.58 (s, 1H);
MS (DCI/NH3) rn/e 335 (M+H)+. maleate salt: mp 131-133 °C; Anal.
calcd for C24H26N4~5'~~3O H2O: C, 63.23; H, 5.88; N, 12.29. Found: C, 63.04; H, 5.74; N, 12.05.
Example 92 3-methyl-N- f f4-(2-pyrimidinyl)-1-piperazin~]meth~lbenzamide The procedure described in Example 91B was followed, substituting 1-(2-pyrimidinyl)piperazine for 1-(2-cyanophenyl)piperazine, to provide the title compound as a colorless oil. IH NMR (300 MHz, CDCl3) 8 2.40 (s, 3H), 2.75 (m, 4H), 3.88 (m, 4H), 4.44 (d, 2H, J=6 Hz), 6.50 (t, 1H, J=4.5 Hz), 6.7 (br s, 1H), 7.32 (d, 2H, J=6 Hz), 7.55 (m, 1H), 7.65 (s, 1H), 8.30 (d, 2H, J=6 Hz); MS (DCI/NH3) m/e 312 (M+H)+.
maleate salt: Obtained as white powder (0.31 g); mp 163-165 °C; Anal.
calcd for C21H25N5~5: C, 59.01; H, 5.90; N, 16.38. Found: C, 59.05; H, 5.93; N, 16.31.
Example 93 3-methyl-N-f f4-(2-pyridinyl)-1-piperazinyl]methyl~benzamide The procedure described in Example 91B was followed, substituting 1-(2-pyridinyl)piperazine for 1-(2-cyanophenyl)piperazine, to provide the title compound as an off white residue. 1H NMR (300 MHz CDCl3) 8 2.40 (s, 3H), 2.75 (m, 4H), 3.60 (m, 4H), 4.40 (d, 2H, J=6 Hz), 6.58 (br s, 1H), 6.65 (m, 2H), 7.32 (d, 2H, J=6 Hz), 7.40-7.55 (m, 2H), 7.55 (s, 1H), 8.2 (m, 1H); MS (DCI/NH3) m/e 311 (M+H)+; maleate salt: Off white solid; mp 141-143 °C; Anal. calcd for C22Ha6NaOs~ C, 61.96; H, 6.15; N, 13.14.
Found: C, 61.78; H, 6.08; N, 13.09.
Example 94 3-methyl-N-f (4-phenyl-1-piperazinyl)methyl]benzamide The procedure described in Example 91B was followed, substituting 1-phenylpiperazine for 1-(2-cyanophenyl)piperazine, to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDCl3) 8 2.40 (s, 3H), 2.82 (m, 4H), 3.21 (m, 4H), 4.44 (d, 2H, J=6 Hz), 6.60 (br s, 1H), 6.82-6.95 (m, 3H), 7.20 (m, 2H), 7.35 (d, 2H, J=6 Hz), 7.58 (m, 1H) 7.63 (s, 1H); MS (DCI/NH3) m/e 310 (M+H)+; maleate salt: Obtained as off white powder; mp.145-147 °C; Anal. calcd for Cz3H2~N305: C, 64.93; H, 6.40;
N, 9.88. Found: C, 64.83; H, 6.38; N, 9.89.
Example 95 N-f f4-(2-methoxyphenyl)-1-p~erazinyl]methyl}-3-methylbenzamide Example 95A
((3-chlorobenzoyl)amino]methyl acetate The procedure described in Example 91A was followed, substituting N-(3-chlorobenzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Exam lp a 95B
N-f f4-(2-methoxyohenyl)-1-piperazinyl]methyl~-3-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 95A for the product from Example 91A and substituting 1-(2-methoxyphenyl)piperazine for 1-(2-cyanophenyl)piperazine, to provide the title compound (1.95 g). IH NMR (300 MHz, CDCl3) 8 2.90 (m, 4H), 3.15 (m, 4H), 3.85 (s, 3H), 4.45 (d, 2H, J=6 Hz), 6.55 (br s, 1H), 6.84 (d, 1H, J=7.5 Hz), 6.9-7.15 (m, 3H,), 7.40 (t, 1H, J=7.5 Hz), 7.5 (m, 1H), 7.68 (m, 1H) 7.8 (t, 1H, J=3 Hz); MS (DCI/NH3) m/e 360 (M+H)+; maleate salt: brown powder; mp 139-142 °C; Anal. calcd for C23H~gC1N3Og: C, 57.61'; H, 5.55; N, 8.76. Found: C, 57.26; H, 5.65; N, 8.69.
Example 96 N- f f 4-(2-cyanophenyll-1-piperazinyl]'methyl ~-2-methylbenzamide Example 96A
((2-methylbenzo~)amino]!methyl acetate The procedure described in Example 91A was followed, substituting N-(2-methylbenzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 96B
N- f f4-(2-cyanophenyl)-1-piperazinyl~methyl~-2-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 96A for the product from Example 91A to provide the title compound as an off white powder. 1H NMR (300 MHz, CDCl3) b 2.50 (s, 3H), 2.90 (t, 4H, J=6 Hz), 3.25 (t, 4H, J=6 Hz), 4.45 (d, 2H, J=6 Hz), 6.18 (br s, 1H), 7.0 (m, 2H), 7.20-7.60 (m, 6H); MS
(DCI/NII3) m/e 335 (M+H)~; maleate salt: Yellow powder; mp 62-64 °CAnal. calcd for C24H26N4~5'0~2O HZQ: C~ 63.48; H, 5.86; N, 12.34. Found: C, 63.19; H, 5.77; N, 11.97.
405145 Example 97 N-f f4-(2-cyanophenyl)-1-piperazinyl]methyl~-4-methylbenzamide Example 97A
j(4-methylbenzoyl)amino]methyl acetate The procedure described in Example 91A was followed, substituting N-(4-methylbenzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 97B

N- f (4-(2-cyanophenyl)-1-piperazinyllmethyll-4-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 97A for the product from Example 91A to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDC13) 8 2.45 (s, 3H), 2.9 (t, 4H, J=6 Hz), 3.25 (t, 4H, J=6 Hz), 4.45 (d, 2H, J=6 Hz), 6.60 (br s, 1H), 7.0 (m, 2H), 7.25 (m, 2H), 7.45-7.60 (m, 2H), 7.7 (d, 2H, J=9 Hz); MS (DCI/NH3) m/e 335 (M+H)+; maleate salt: Brown powder; Anal.
calcd for CZ~H26NøO5: C, 63.99; H, 5.82; N, 12.44. Found: C, 63.71; H, 5.78; N, 12.18.
Example 98 N-f(4-(3-cyano-2-pyridinylLpiperazin~]methyll 3 methylbenzamide The procedure described in Example 91B was followed, substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a brown oil. IH NMR (300 MHz, CHCl3) 8 2.40 (s, 3H), 2.80 (t, 4H, J=6 Hz), 3.75 (t, 4H, J=6 Hz), 4.40 (d, 2H, J=6 Hz), 6.55 (br s, 1 H), 6.75 (dd, 1 H, J=12, 6 Hz), 7.32 (d, 2 H, J=6 Hz), 7.52-7.65 (m, 2H), 7.75 (dd, 1H, J=7.5, 3 Hz), 8.33 (dd, 1H, J=6, 3 Hz);
MS (DCI/NH3) m/e 336 (M+H)'~; maleate salt: Pale yellow powder; mp 128-130 °C; Anal.
calcd for C23H25N5Og:C, 61.19; H, 5.58; N, 15.51. Found: C, 61.46; H, 5.57; N, 15.57.
Example 99 N-f f4-(3-cyanophenyl)-1-piperazinyl]!meth~~-3-methylbenzamide The procedure described in Example 91B was followed, substituting 1-(3-cyanophenyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a glassy solid. 1H NMR (300 MHz, CDCl3) 8 2.40 (s, 3H), 2.80 (t, 4H, J=6 Hz), 3.25 (t, 4H, J=6 Hz), 4.40 (d, 2H, J=6 Hz), 6.50 (br s, 1H), 7.1 (m, 3H), 7.35 (m, 3H), 7.55-7.70 (m, 2H);
MS (DCI/NH3) m/e 335 (M+H)+; maleate salt: Off white powder. mp 59-61 °C; Anal. calcd for C24H26Na.Os: C, 63.99; H, 5.82; N, 12.44. Found: C, 63.76; H, 5.75; N, 12.17.
Example 100 N-1 (4-(3-cyanophenyl)-1-piperazinyl]meth} -2-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 96A for the product from Example 91A and substituting 1-(3-cyanophenyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound. 1H

NMR (300 MHz, CDC13) ~ 2.48 (s, 3H), 2.85 (t, 4H, J=6 Hz), 3.25 (t, 4H, J=6 Hz), 4.4 (d, 2H, J=6 Hz), 6.18 (br s, 1H), 7.10 (m, 3H), 7.22 (m, 2H), 7.30-7.45 (m, 3H);
MS (DCI/NH3) m/e 335 (M+H)+; maleate salt: Off white powder; mp 156-159 °C; Anal.
calcd for CzaHz6NaOs: C~ 63.99; H, 5.82; N, 12.44. Found: C, 63.79; H, 5.67; N, 12.29.
Example 101 N-f f4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl)benzamide Example 1 O 1 A
(benzoylamino methyl acetate The procedure described in Example 91A was followed, substituting N-(benzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 1 O 1 B
N-ff4-(3-cyano-2-p rr~yl)-1-~perazinyl]methyl)benzamide The procedure described in Example 91B was followed, substituting the product from Example IOIA for the product from Example 91A and substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDCl3) 8 2.80 (t, 4H, J=6 Hz), 3.75 (t, 4H, J=6 Hz), 4.40 (d, 2H, J=6 Hz), 6.55 (br s, 1H), 6.75 (dd, 1H, J=12, 6Hz), 7.40-7.60 (m, 3H), 7.72-7.85 (m, 3H), 8.35 (dd, 1H, 6, 3Hz); MS (DCI/NH3) m/e 322 (M+H)+.
maleate salt: White solid; mp 133-136 °C; Anal. calcd for CzzHz3NsOs:
C, 60.40; H, 5.30; N, 16.01. Found: C, 60.97; H, 5.26; N, 16.31.
Example 102 N-{f4-(3-cyano-2-pyridinyl)-1-piperazin~lmethyl -4-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 97A for the product from Example 91A and substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a white solid. IH NMR (300 MHz, CDC13) 8 2.40 (s, 3H), 2.85 (m, 4H,), 3.75 (m, 4H), 4.43 (m, 2H), 6.75 (m, 1H), 7.22 (m, 2H), 7.70 (d, 2H, J=9 Hz), 7.78 (dd, 1H, J=9, 3 Hz) 8.32 (dd, 1H, J=6, 3 Hz); MS (DCI/NH~) m/e 336 (M+H)+; maleate salt: White solid; mp 134-136 °C;
Anal. calcd for Ca3H25N5O5: C, 61.19; H, 5.58; N, 15.51. Found: C, 60.91; H, 5.60; N, 15.60.
Example 103 N-f f4-(3-cyano-2-p ridinyl)-1-piperazin~]methyll-2-methylbenzamide The procedure described in Example 91B was followed, substituting the product from Example 96A for the product from Example 91A and substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to.provide the title compound as a glassy solid. 1H NMR (300 MHz, CDCl3) 8 2.48 (s, 3H), 2.8 (t, 4H, J=6 Hz), 3.75 (t, 4H, J=6 Hz), 4.4 (d, 2H, J=6 Hz), 6.14 (br s, 1H), 6.75 (dd, 1H, J=12, 6 Hz), 7.18-7.41 (m, 4H), 7.78 (dd, lH, J=9, 3~ Hz), 8.35 (dd, 1H, 6, 3 Hz); MS (DCI/NH3) m/e 336 (M+H)+; maleate salt: Off white powder; mp 124-127 °C; Anal. calcd for Ca3H25N5O5: C, 61.19; H, 5.58; N, 15.51. Found: C~ 61.43; H, 5.39; N, 15.81.
Example 104 N-f f4-(2-pyridinyl)-1-piperazinyl]methyllbenzamide The procedure described in Example 91B was followed, substituting the product from Example lOlA for the product from Example 91A and substituting 1-(2-pyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a white sticky residue. 1H
NMR (300 MHz, CDC13) S 2.75 (t, 4H, J=6 Hz), 3.55 (t, 4H, J=6 Hz), 4.4 (d, 2H, J=6 Hz), 6.50 (br s, 1H), 6.65 (m, 2H), 7.40-7.55 (m, 4H), 7.75 (m, 2H), 8.20 (m, 1H);
MS (DCI/NH3) m/e 297 (M+H)+; maleate salt: White solid; mp 125-127 °C; Anal. calcd for CZIHaaNaOs: C, 61.15; H, 5.87; N, 13.58. Found: C, 60.86; H, 5.89; N, 13.52.
Example 105 N-f f4-(2-chlorophen~)-1-piperazinyl]methyllbenzamide The procedure described in Example 91B was followed, substituting the product from Example lOlA for the product from Example 91A and substituting 1-(2-chlororphenyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a colorless oil., 1H NMR (300 MHz, CDC13) S 2.86 (m, 4H), 3.1 (m, 4H), 4.45 (d, 2H, J=6 Hz), 6.70 (br s, 1H), 7.1 (m, 3H), 7.00 (m, 2H), 7.25 (m, 2H), 7.4-7.26 (m, 2H); MS
(DCI/NH3) m/e 330 (M+H)+; maleate salt: Tan solid; mp 145-147 °C; Anal. calcd for C22H24C1N3O5: C, 59.26; H, 5.43; N, 9.42. Found: C, 58.98; H, 5.34; N, 9.15.
Example 106 3-chloro-N-f f4-(2-cyanophenyl)-1-piperazin~]methyl~benzamide The procedure described in Example 91B was followed, substituting the product from Example 95A for the product from Example 91A, to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDC13) 8 2.92 (m~ 4H), 3.25 (m, 4H), 4.45 (d, 2H, J=6 Hz), 6.75 (br s, 1H), 7.00 (t, 2H, J=6 Hz), 7.35-7.70 (m, 5H), 7.82 (m, 1H); MS (DCI/NH3) m/e 355 (M+H)+; maleate salt: White solid; mp 143-146 °C; Anal. calcd for C23H23C1NøO5: C, 58.66;
H, 4.92; N, 11.90. Found: C, 58.30; H, 5.01; N~ 11.67.
Example 107 4-chloro-N-f f4-(2-methoxyphenyl)-1-piperazinyl]methyl)benzamide Example 107A
j(4-chlorobenzoyl)amino~methyl acetate The procedure described in Example 91A was foilowed, substituting N-(4-chlorobenzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 107B
4-chloro-N-ff4-(2-methoxyphen ly)-1-piperazinyl]methyl~benzamide The procedure described in Example 91B was followed, substituting the product from Example 107A for the product from Example 91A and substituting 1-(2-methoxyphenyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDC13) S 2.92 (m, 4H), 3.15 (m, 4H), 3.85 (s, 3H), 4.45 (d, 2H, J=6 Hz), 6.7 (br s, 1H), 6.82-7.05 (m, 4H); 7.44 (m, 2H), 7.75 (m, 2H); MS
(DCI/NH3) m/e 360 (M+H)+; maleate salt: White solid; mp 145-147 °C;
Anal. calcd for CZ3H26C1N3O6: C, 58.04; H, 5.51; N, 8.83. Found: C, 58.24; H, 5.18; N, 8.83.
Exam In a 108 2-chloro-N-{~4-(3-cyano-2-Ryridinyl)-1-piperazinyl]methyl~benzamide Example 108A
f (2-chlorobenzoyl amino]methyl acetate The procedure described in Example 91A was followed, substituting N-(2-chlorobenzoyl)glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 108B
2-chloro-N- ~ (4-(3 -cyano-2-pyridin~)-1-p~erazinyl]methyl } benzamide The procedure described in Example 91B was followed, substituting the product from Example 108A for the product from Example 91A and substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a yellow oil. IH NMR (300 MHz, CDCl3) 8 2.75 (t, 4H, J=6 Hz), 3.55 (t, 4H, J=6 Hz), 4.4 (d, 2H, J=6 Hz), 6.50 (br s, 1H), 6.65 (m, 2H), 7.40-7.55 (m, 4H), 7.75 (m, ~2 H), 8.20 (m, 1H);
MS (DCI/NH3) m/e 356 (M+H)+; maleate salt: White solid; mp 137-139 °C;
Anal. calcd for C22H22C1NSO5: C, 55.99; H, 4.70; N, 14.84. Found: C, 55.76; H, 4.74; N, 14.60.
Example 109 N-f f4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl~-2-(trifluoromethyl)benzamide Example 109A
~f2-(trifluoromethyl)benzoyllaminolmethyl acetate The procedure described in Example 91A was followed, substituting N-[2-(trifluoromethyl)benzoyl]glycine for N-(3-methylbenzoyl)glycine, to provide the title compound.
Example 109B
N-f f4-(3-cyano-2-pyridinyl)-1-piperazinvllmethyll-2 ~trifluoromethyl)benzamide The procedure described in Example 91B was followed, substituting the product from Example 109A for the product from Example 91A and substituting 1-(2-cyanopyridinyl)piperazine for 1-(2-cyanophenyl)piperazine to provide the title compound as a colorless oil. 1H NMR (300 MHz, CDCl3) 8 2.90 (m, 4H), 3.80 (m, 4H), 4.45 (d, 2H, J=6 Hz), 6.80 (dd, 1H, J=12, 6 Hz), 7.55-7.80 (m, SH), 8.35 (dd, 1H, J=6, 3 Hz), 11.00 (br s, 1H);
MS (DCI/NH3) m/e 390 (M+H)+. maleate salt: Hygroscopic white solid.
Example 110 N- ~ ~4-(2-cyanophenyl)-1-piperazi~l]meth~l~ benzamide The procedure described in Example 91B was followed, substituting the product from Example lOlA for the product from Example 91A, to provide the title compound as a yellow oil. 1H NMR (300 MHz, DMSO-d6) 8 2.71 (m, 4H), 3.15 (m, 4H), 4.22 (d, 2H, J=6.1 Hz), 7.08 (dd, 1H, J=7.8, 7.8 Hz), 7.15 (d, 1H, J=8.5 Hz), 7.55 (m, 4H), 7.68 (dd, 1H, J=7.4, 1.3 Hz), 7.90 (m, 2H), 8.95 (t, 1H, J=6.1 Hz); MS (DCI/NH3) m/e 321 (M+H)+;
maleate salt:
Tan solid, mp 148-150 °C; Anal. calcd for Cl9HzoNaO~1.0 C4H4O4: C, 63.29; H, 5.54; N, 12.84. Found: C, 63.03; H, 5.47; N, 12.79.
Example 111 N~f4-(2-methoxyphenyl~pi eridiny~methyl)-3-methylbenzamide 4-(2-Methoxyphenyl)piperidine (286 mg, 1.5 mmol), the product from Example 91A
(310 mg, 1 mmol), and triethylamine (0.42 mL, 3 mmol) were combined in acetonitrile (8 mL) and stirred at room temperature for 18 hours. The reaction mixture was concentrated under reducec pressure and the residue was purified by flash chromatography on silica gel (elution with dichloromethane:methanol 9.5:0.5) to provide the title compound (285 mg, 56.2% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.65 (m, 4H), 2.31 (m, 2H), 2.37 (s, 3H), 2.79 (m, 1H), 2.93 (m, 2H), 3.75 (s, 3H), 4.15 (d, 2H, J=6 Hz), 6.90 (m, 2H), 7.15 (m, 2H), 7.36 (m, 2H), 7.68 (m, 2H), 8.69 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 339 (M+H)+;
Anal.
calcd for C~1HZ6N20z~0.15 H20: C, 73.94;.H, 7.77; N, 8.21. Found: C, 73.56, H, 7.72, N, 8.15.
Example 112 3-methyl-N-f f4-(2-pyridinyl)-1-piperidin~]methyl~benzamide The procedure described in Example 111 was followed, substituting the product from Example 36C for 4-(2-methoxyphenyl)piperidine, to provide the title compound (480 mg, 64% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.75 (m, 4H), 2.31 (m, 2H), 2.36 (s, 3H), 2.59 (m, 1H), 2.95 (m, 2H), 4.17 (d, 2H, J=6 Hz), 7.18 (m, 1H), 7.25 (d, 1H, J=6 Hz), 7.35 (m, 2H), 7.69 (m, 3H), 8.48 (m, 1H), 8.71 (m, 1H); MS (DCI/NH3) m/e 310 (M + H)~.
Anal.
calcd for C19H23N30~0.25 H2O: C, 72.70; H, 7.50; N, 13.39. Found: C, 72.60, H, 7.50, N, 13.21.
Example 113 3-methyl-N-f (4-phenyl-3,6-dihydro-1 (2H)-pyridinyl)meth~]benzamide The procedure described in Example 111 was followed, substituting 4-phenyl-1,2,3,6-tetrahydropyridine for 4-(2-methoxyphenyl)piperidine, to provide the title compound (196 mg, 64%. yield). 1H NMR (300 MHz, DMSO-d6) 8 2.35 (s, 3H), 2.76 (t, 2H, J=6 Hz), 3.24 (d, 2H), 4.25 (d, 4H, J=9 Hz), 6.16 (m, 1H), 7.22 (t, 1H, J =6 Hz), 7.32 (m, 4H), 7.40 (m, 2H), 7.66 (m, 2H), 8.75 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 307 (M + H)+. Anal.
calcd for C~oHZ2N20~0.10 HZO: C, 77.94; H, 7.26; N, 9.09. Found: C, 77.64, H, 7.34, N, 8.86.
Example 114 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methylbenzamide The procedure described in Example 111 was followed, substituting 1',2',3',6'-tetrahydro-2,4'-bipyridine hydrochloride for 4-(2-methoxyphenyl)piperidine, to provide the title compound (310 mg, 81.5% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.35 (s, 3H), 2.58 (m, 2H), 2.76 (t, 2H, J=6 Hz), 3.29 (m, 2H), 4.27 (d, 2H, J=6 Hz), 6.70 (m, 1H), 7.22 (m, 1 H), 7.3 5 (d, 2H, J=6 Hz), 7.51 (d, 1 H, J=9 Hz), 7.70 (m, 3H), 8.51 (m, 1 H), 8.76 (m, 1 H);
MS (DCI/NH3) m/e 308 (M+H)+.
Example 115 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methoxybenzamide 3-Methoxybenzamide (1.13 g, 7.5 mmol), KZC03 (345 mg, 2.5 mmol), paraformaldehyde (0.5 g, 16 mmol), and 1',2',3',6'-tetrahydro-2,4'-bipyridine hydrochloride (393 mg, 2 mmol) were combined in ethanol (25 ml) and refluxed for 18 hours.
The reaction mixture was allowed to cool to room temperature and concentrated under reduced pressure.
The residue was partitioned between ethyl acetate (80 mL) and water (80 mL).
The organic layer was washed with brine (2 x 50 mL), dried over MgS04, filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with ethyl acetate:ethanol, 9.0:1.0) to provide the title compound (180 mg, 49% yield). IH NMR (300 MHz, DMSO-d6) 8 2.58 (m, 2H), 2.76 (t, 2H, J=6 H2), 3.29 (m, 2H), 3.80 (s, 3H), 4.27 (d, 2H, J=6 Hz), 6.70 (m, 1H), 7.09 (m, 1H), 7.22 (m, 1H), 7.42 (m, 4H), 7.72 (m, 1H), 8.51 (m, 1H), 8.83 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 324 (M+H)+.
Anal. calcd for C19HZ1N302~0.60 HaO: C, 68,28; H, 6.70; N, 12.57. Found: C, 68.19, H, 6.84, N, 11.77.
Example 116 N-(3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-ylmethyl)-3 fluorobenzamide The procedure described in Example 115 was followed, substituting 3-fluorobenzamide for 3-methoxybenzamide, to provide the title compound (260 mg, 42.6%
yield). 1H NMR (300 MHz, DMSO-d6) b 2.58 (m, 2H), 2.76 (t, 2H, J=6 Hz), 3.29 (m, 2H), 4.27 (d, J=6Hz, 2H), 6.70 (m, 1H), 7.21 (m, 1H), 7.39.(m, 1H), 7.51 (m, 2H), 7.72 (rn, 3H), 8.51 (m, 1H), 8.93 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 312 (M+H)+.
Example 117 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)- l~methyl)-3 5-difluorobenzamide The procedure described in Example 115 was followed, substituting 3,5- , difluorobenzamide for 3-methoxybenzamide, to provide the title compound (140 mg, 21%
yield). IH NMR (300 MHz, DMSO-d6) 8 2.58 (m, 2H), 2.76 (t, 2H, J=6 Hz), 3.29 (m, 2H), 4.27 (d, 2H, J=6 Hz), 6.70 (m, 1H), 7.21 (m, 1H), 7.51 (m, 2H), 7.60 (m, 2H), 7.75 (m, 1H), 8.51 (m, 1H), 9.01 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 330 (M+I~+. Anal. calcd for ClsH1~N30Fz~0.70 HaO: C, 63.22; H, 5.42; N, 12.29. Found: C, 62.76, H, 5.02, N, 12.09.
Example 118 2-~4-(3-cyano-2-pyridin, r~l)-1-~iperaziny_1]-N-3-pyridinylacetamide The procedure described in Example 8 was followed, substituting 2-chloro-N-3-pyridinylacetamide (Abdel Rahman, A. E.; et al. J. Ind. Chem. Soc. 1981, 58, 171-173) for N-chloroacetyl-3-nitroaniline, to provide the title compound in 13% yield. The free base was treated with malefic acid to provide the maleate salt as a yellow solid. 1H
NMR (300 MHz, MeOH-d4) 8 8.43 (dd, 1 H, J=4.7, 1.7 Hz), 8.33 (br d, 1 H, J=4.1 Hz), 8.17 (ddd, 1 H, J=8.5, 2.4, 1.4 Hz), 8.00 (dd, 1 H, J=7.8, 2.0 Hz), 7.47 (dd, 1 H, J=8.5, 5.1 Hz), 7.00 (dd, 1 H, J=7.8, 5.1 Hz), 6.27 (s, 2 H), 3.88 (m, 6 H), 3.28 (m, 4 H); MS (DCI/NH3) m/e 323 (M+H)+; Anal.

calcd for CI~H1sN60~1.2 C~H404~0.40 H20: C, 55.85; H, 5.07; N, 17.92; Found:
C, 55.66; H, 5.14; N, 17.91.
Exam In a 119 2-(1-~2-[(3-methylphenyl)amine'-2-oxoethyl~~peridin-4-yl)pyridiniumn N-oxide Example 119A
2-piperidin-4-ylpyridinium N-oxide hydrochloride 2-[1-(tent-butoxycarbonyl)piperidin-4-yl]pyridinium N-oxide (1.248, 4.15mmol) in dichloromethane (30mL) was cooled to 0 °C and treated with m-chloroperbenzoic acid 77%
(1.4g, 8.3mmol). After stirnng at 0 °C for 30minutes, the mixture was allowed to warm to room temperature and stir an additional for 2hrs. .The mixture was diluted with methylene chloride (SOmL), washed with saturated NaHCO3, brine, dried over MgS04, filtered, and the filtrate concentrated under reduced pressure to provide white solid. The white solid was dissolved in ethyl acetate (SOmL) and cooled to -78 °C. HCl gas was bubbled through the reaction mixture for 15 minutes and the mixture was allowed to warm to room temperature.
The mixture was filtered and the filter cake washed with ethyl acetate and then dried under high vaccum to provide the title compound (0.85g, 96% yield). 1H NMR (300 MHz, DMSO-d6) 8 1.82 (m, 2H), 2.10 (m, 2H), 3.06 (m, 2H), 3.36 (m, 2H), 3.58 (m, 1H), 7.45 (rn, 3H), 8.39 (d, J=9Hz, 1H), 9.04 (bs, 1H); MS (DCI/NH3) mlz 179 (M+H)*.
Example 119B
2-( 1- f 2-f (3-methylphenyl)amino]-2-oxoethyl~~iperidin-4-yl)pyridiniumn N-oxide The procedure described in Example 36D was followed, substituting the product from Example .119A for the product from Example 36C, to provide the title compound (159mg, 48.8% yield). 1H NMR (300 MHz, DMSO-d6) b 1.89 (m, 2H), 1.91(m, 2H), 2.30 (m, SH), 2.99 (m, 2H), 3.14 (s, 2H); 3.25 (m, 1H), 6.88 (d, J=7.SHz, 1H), 7.19 (t, J=7.SHz, 1H), 7.31 (m, 2H), 7.45 (m, 2H), 8.24 (m, 1H), 9.6 (bs, 1H); MS (DCI-NH3) m/z 310 (M+H)+. The free base (156.7mg) in ethanol (20mL) was treated with malefic acid (55:93mg) and the solution -was stirred for 10 minutes, concentrated under reduced pressure to provide the maleate salt as an off white solid (212.6 mg). ~H NMR (300 MHz, DMSO-d6) 8 1.91(m, 2H), 2.15 (m, 2H), 2.29 (s, 3H), 3.30 (m, 4H), 3.50 (m, 2H), 4.02 (m, 1H), 6.04 (s, 2H), 6.95 (d, J=7.SHz, 1H), 7.23 (t, J=7.SHz, 1H), 7.39 (m, SH), 8.29 (m, 1H), 10.36 (bs, 1H); MS (DCI-NH3) m/z 310 (M+H)+; Analysis calculated for 0.25 HZO.C23HZ~N306: C, 61.94; H, 6.22; N, 9.42; Found: C, 61.56,H,6.21,N,8.99.
Example 121 N-2-adamantyl-2-j4-(3-cyano-2-pyridinyl)-1-piperazinyllacetamide Example 121A
N-2-adamantyl-2-bromoacetamide The procedure described in Example lA was followed,, substituting 2-adamantaneamine hydrochloride for 3-methylaniline to provide the title compound (68%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) & 1.51 (d, 2H, J=12.9 Hz), 1.78 (m, lOH), 1.95 (d, 2H, J=12.5 Hz), 3.82 (br d, 1H, J=7.5 Hz), 3.92 (s, 2H), 8.11 (br d, 1H, J=7.1 Hz); MS (DCI/NH3) m/e 272 (M+H)+; 290 (M+NH4)+.
Example 121 B
N-2-adamantyl-2-f4-(3-cyano-2-p~ridinyl)-1-piperazinyllacetamide 1-(2-cyanopyridyl)piperazine (680 mg, 3.61 mmol) and N,N-diisopropylamine (2 mL) in toluene (30 mL) were treated with the product from Example 121A (800 mg, 2.94 mmol) and heated to 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate.
The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica~gel (elution with 20% ethyl acetate:hexanes) to provide 917 mg (82% yield) of the title compound as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.57 (d, 2H~ J=12.5 Hz), 1.79 (m, 12H), 2.63 (m, 4H), 3.04 (s, 2H), 3.62 (m, 4H), 3.88 (br d, 1H, J=7.8 Hz), 6.94 (dd, 1H, J=7.5, 4.7 Hz), 7.69 (br d, 1H, J=7.8 Hz), 8.08 (dd, 1H, J=7.8, 2.0 Hz), 8.41 (dd, 1H, J=4.8, 1.7 Hz); MS (DCI/NH3) m/e 380 (M+H)+; Anal. calcd for CZZHa9Ns0: C, 69.63; H, 7.70; N, 18.45. Found: C, 69.45; H, 7.90; N, 18.07.
Examble 122 2 [4-(3-cyano-2-pyridinyll-1-piperazin~l-N-c~lohexylacetamide Example 122A
2-bromo-N-c clohexylacetamide To a solution of bromoacetyl chloride (5.50 mL, 66.9 mmol) in tetrahydrofuran (120 mL) at 0 °C was added a mixture of 4-dimethylaminepyridine (2.80 g, 22.9 mmol) and cyclohexylamine (5.00 mL, 43.7 mmol) in tetrahydrofuran (60 mL). The mixture was warmed to room temperature and stirred an additional 18 hours. The reaction was quenched with water and extracted with dichloromethane. The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 10% ethyl acetate:hexanes) to provide of the title compound (25% yield) as a white solid. IH NMR
(300 MHz, DMSO-d6) 8 1.18 (m, SH), 1.64 (m, SH), 3.52 (m, 1H)~ 3.99 (s, 2H), 8.04 (br d, 1H, J=7.1 Hz); MS (DCI/NH3) m/e 237/239 (M+NH4)+.
Example 122B
2-[4-~3-c~ano-2-pyridinyl)-1-piperazinyl]-N-cyclohexylacetamide The procedure described in Example 121B was followed, substituting the product from Example 122A for the product from Example 121A to provide the title compound (46%
yield) as a white solid. IH NMR (300 MHz, DMSO-d6) ~ 1.22 (m, 3H), 1.38 (m, 2H), 1.67 (m, 3H), 1.89 (m, 2H), 2.68 (m, 4H), 3.05 (s, 2H), 3.75 (m, 4H), 3.83 (m, 1H), 6.79 (dd, 1H, J=7.5, 4. 8 Hz), 7.02 (br s, 1 H), 7.78 (dd, 1 H, J=7.6, 1.9 Hz), 8.3 5 (dd, 1 H, J=4.8, 2.0 Hz); MS
(DCI/NH~) m/e 328 (M+H)+; Anal. calcd for CiBHzSN50: C, 66.03; H, 7.70; N, 21.39., Found: C, 65.88; H, 7.70; N, 21.28.
Example 123 2-L-(3-cyano-2=pyridinXl)-1-~perazinyl]-N-5,6,7,8-tetrah~dro-1-naphthalenylacetamide Example 123A
2-bromo-N-5,6,7,8-tetrahydro-1-naphthalenylacetamide The procedure described in Example lA was followed, substituting 5,6,7,8-tetrahydro-1-naphthylamine for 3-methylaniline to provide the title compound (14% yield) as a white solid. IH NMR (300 MHz, DMSO-d6) 8 1.70 (m, 4H), 2.58 (m, 2H), 2.73 (m, 2H), 4.07 (s, 2H), 6.93 (d, 1 H, J=7. S Hz); 7.07 (dd, 1 H, J=7. 8, 7.8 Hz), 7.17 (d, 1 H, J=6. 8 Hz), 9.55 (br s, 1H); MS (DCI/NH3) m/e 268/270 (M+H)+; 285/287 (M+NH4)+.
Example 123B
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-5,6,7,8-tetrahydro-1-naphthalenylacetamide The procedure described in Example 121B was followed, substituting the product from Example 123A for the product from Example 121A to provide the title compound (75%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.74 (m, 4H), 2.62 (m, 2H), 2.72 .
(m, 6H), 3.20 (s, 2H), 3.69 (m, 4H), 6.88 (d, 1H, J=7.5 Hz), 6.94 (dd, 1H, J=7.8, 4.7 Hz), .
7.07 (dd, 1 H, J=7.8 Hz), 7.59 (d, 1 H, J=7,.8 Hz), 8.08 (dd, 1 H, J=7.5, 1.7 Hz), 8.42 (dd, 1 H, J=4.8, 1.7 Hz), 9.33 (br s, 1H); MS (DCI/NH3) m/e 376 (M+H)+; Anal. calcd for C~,ZH25N50~0.3 HO: C, 69.38; H, 6.77; N, 18.39. Found: C, 69.40; H; 6.63; N, 18.13.
Example 124 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl -~4-fluoro-2-methylphenyl)acetamide Example 124A
2-chloro-N-(4-fluoro-2-methylphenyl)acetamide The procedure described in Example 22A was followed, substituting 4-fluoro-2-methylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (51% yield) as a white solid. IH NMR (300 MHz, DMSO-d6) 8 2.19 (s, 3H), 4.29 (s, 2H), 7.01 (ddd, 1H, J=8.5, 8.5, 3.1 Hz), 7.10 (dd, 1H, J=9.8, 3.1 Hz), T.35 (dd, 1H, J=8.8, 5.8 Hz), 9.67 (br s, 1H);
MS (DCI/NH3) m/e 202 (M+H)+; 219 (M+NH4)+.
Example 124B , 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphen~)acetamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (30 mg, 0.15 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), the product from Example 124A (40 mg, 0.20 mmol) and sodium carbonate (70 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was concentrated under reduced pressure. The residue was purified by preparative HPLC to provide 46 mg (70%) of the desired product as a trifluoroacetic acid salt. 1H NMR (300 MHz, DMSO-d6) 8 2.20 (s, 3H), 2.96 (br s, 2H), 3.43-3.63 (m, 2H), 4.03-4.20 (m, 2H), 4.39 (s, 2H), 6.72 (br s, 1H), 7.10 (m, 2H), 7.3 8 (m, 1 H), 7.43 (m, 1 H), 7.64 (d, J=7 Hz, 1 H), 7.84 (m, 1 H), 8.60 (m, 1 H), 10.00 (m, 1H), 10.40 (br s, 1H); MS (ESI/APCI+) m/e 326 (M+H)+. .
Example 125 [4-(2-pyridinyl)-1-piperidin~]methyl 3-(trifluoromethyl)benzamide A mixture of product from Example 36C (20 mg; 0.10 mmol), paraformaldehyde (30 mg, 1 mmol), 3-trifluoromethylbenzamide (95 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 rnmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 11.2 mg (34%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 1.72 (m, 2H), 1.82 (m, 2H), 2.34 (m, 2H), 2.60 (m, 1H), 2.96 (m, 2H), 4.20 (d, J=6.2 Hz, 2H), 7.18 (ddd, J=7.5, 4.8, 1.1 Hz, 1 H), 7.25 (m, 1 H), 7.69 (td, J=7.6, 1.9 Hz, 1 H), 7.74 (t, J=7.8 Hz, 1 H), 7.92 (d, J=7. 8 Hz, 1 H), 8.20 (d, J=7.8 Hz, 1 H), 8.24 (s, 1 H), 8.47 (ddd, , J=5.0, 1.9, 0.9 Hz, 1H), 9.02 (t, J=6.1 Hz, 1H); MS (ESI/APCI-) m/e 362 (M-H)+.
Example 126 3,5-dimethox~[4-(2-pyridinyl)-1-piperidin~]methyl]benzamide A mixture of product from Example 36C (20 mg, 0.10 mmol), paraformaldehyde (30 ring, 1 mmol), 3,5-dimethoxybenzarnide (91 mg, 0.5 mrnol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purif ed by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 11.8 mg (34%) pure compound. 1H NMR (500 MHz, DMSO-db) 8 1.73 (m, 2H), 1.82 (m, 2H), 2.36 (m, 2H), 2.61 (m, 1H), 2.96 (m, 2H), 3.79 (s, 6H), 4.18 (d, J=6.0 Hz, 2H), 6.65 (s, 1H), 7.05 (s, 2H), 7.18 (t, J=5 Hz, 1H), 7.25 (d, J=7 Hz, 1H), 7.69 (t, J=7 Hz, 1H), 8.47 (d, J=4 Hz, 1H), 8.75 (t, J=6 Hz, 1H); MS (ESI/APCI-) m/e 354 (M-H)+.
Exam lp a 127 N-~,j4-(2-pyridinXl)-1-~peridinyl]met~l~cyclohexanecarboxamide A mixture of product from Example 36C (20 mg, 0.10 mmol), paraformaldehyde (30 mg, 1 mmol), cyclohexanecarboxylic acid amide (63 mg, 0.5 mmol, Aldrich), and 42 rng of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column, chromatography on silica gel (10%
methanol:ethyl acetate) to give 16 mg (56%) pure compound. 1H NMR (SOO MHz, DMSO-d6) 8 1.38 (m, 2H), 1.19 (m, 4H), 1.73 (m, 2H), 1.68 (m, 4H), 1.80 (m, 2H);
2.18 (m, 3H), 2.58 (m, 1H), 2.92 (m, 2H), 3.92 (d, J=5 Hz, 2H), 7.18 (t, J=5 Hz, 1H), 7.26 (d, J=7 Hz, 1H), 7.69 (t, J=7 Hz, 1H), 7.95 (t, J=5 Hz, 1H), 8.55 (d, J=4 Hz, 1H); MS
(ESI/APCI+) m/e 302 (M+H)+.
Example 128 3,4-difluoro-N- f [4-(2-pyridinyl~piperidin~l]methyl~benzamide .
A mixture of product from Example 36C (20 mg, 0.10 mmol), paraformaldehyde (30 mg, 1 mmol), 3,4-difluorobenzamide (79 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 rnmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 16 mg (56%) pure compound. 1H NMR (500 MHz, DMSO-db) S 1.73 (m, 2H), 1.82 (m, 2H), 2.33 (m, 2H), 2.60 (m, 1H), 2.95 (m, 2H), 4.18 (d, J=5 Hz, 2H), 7.18 (t, J=5 Hz, 1H), 7.25 (d, J=7 Hz, 1H), 7.58 (t, J=7 Hz, 1H), 7.70 (t, J=7 Hz, 1H), 7.80 (m, 1H), 7.95 (t, J=7 Hz, 1H), 8.45 (d, J=4 Hz, 1H), 8.95 (t, J=5 Hz, 1H); MS
(ESI/APCI-) xnle 330 (M-H)+.
Example 129 3-chloro-N-f ~4-(2-~yridinvl)-1-piperidinyl~methyl~benzamide A mixture of product from Example 36C (20 mg, 0.10 mmol), paraformaldehyde (30 mg, 1 mmol), 3-chlorobenzamide (165 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 11 mg (36%) pure compound. 1H NMR (500 MHz, DMSO-d6) ~ 1.73 (m, 2H), 1.82 (m, 2H), 2.33 (m, 2H), 2.60 (m, 1H), 2.95 (m, 2H), 4.18 (d, J=5 Hz, 2H), 7.,18 (t, J=6 Hz, 1H), 7.25 (d, J=7 Hz, 1H), 7.56 (t, J=7 Hz, 1H), 7.62 (d, J=6 Hz, 1H), 7.72 (t, J=7 Hz, 1H), 7.85 (d, J=6 Hz, 1H), 7.95 (s, 1H), 8.48 (d, J=6 Hz, 1H), 8.95 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 328 (M-H)+.
Example 130 2 3-dimethyl-N-~j4-(2-p~ridinyl)-1-piperazinyl]methyl~benzamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), 2,3-dimethylbenzamide (75 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The.residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 29 mg (88%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 2.20 (s, 3H), 2.24 (s, 3H), 2.61 (t, J=4 Hz, 4H), 3.48 (t, J=4 Hz, 4H), 4.15 (d, J=5 Hz, 1 H), 6.62 (t, J=5 Hz, 1 H), 6.81 (d, J=6 Hz, 1 H), 7.03 (m, 2H), 7.21 (t, J=5 Hz, 1 H), 7.51 (t, J=6 Hz, 1H), 8.12 (d, J=5 Hz, 1H), 8.52 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 323 (M-H)+.
Example 131 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'Hl-ylmethyl)-3-(trifluoromethyl)benzamide .A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30.mg, 1 mmol), 3-trifluoromethylbenzamide (95 mg, 0.5 mmol), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 15 mg (41%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 2.58 (m, 2H), 2.80 (t, J=4 Hz, 2H), 3.28 (m, 2H), 4.32 (d, J=5 Hz, 2H), 6.71 (m, 1H), 7.22 (m, 1H), 7.52 (d, J=6 Hz, 1H), 7.72 (m, 2H), 7.95 (d, J=6 Hz, 1H), 8.22 (m, 2H), 8.52 (m, 1H), 9.08 (t, J=5 Hz, 1H);
MS (ESI/APCI-) m/e 360 (M-H)+.
Example 132 3-chloro-N-(3' 6'-dihydro-2 4'-bi~yridin-1'(2'H)-ylmethyl)benzamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 mmol), 3-chlorobenzamide (78 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed.
The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 20 mg (61°!°) pure compound. 1H NMR (500 MHz, DMSO-d~) ~
2.58 (m, 2H), 2.79 (t, J=4 Hz, 2H), 3.30 (m, 2H), 4.30 (d, J=5 Hz, 2H), 6.71 (m, 1H), 7.22 (m, 1H), 7.52 (m, 2H), 7.62 (d, J=6 Hz, 1 H), 7.73 (t, J=6 Hz, 1 H), 7.85 (d, J=6 Hz, 1 H), 7.92 (s, 1 H), 8.52 (m, 1 H), 9.08 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 326 (M-H)+.
Example 133 N-(3',6'-dihydro-2 4'-bipyridin-1'(2'H~- lmeth~yclohexanecarboxamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 mmol), cyclohexanecarboxylic acid amide (64 mg; 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 19 mg (64%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 1.19 (m, 4H), 1.26 (m, 2H), 1.61 (m, 1H), 1.68 (m, 3H), 2.18 (m, 1H), 2.55 (m, 2H), 2.68 (m, 2H), 3.18 (m, 2H), 4.02 (d, J=5 Hz, 2H), 6.68 (m,. 1H), 7.22 (m, 1H), 7.52 (d, J=6 Hz, 1H), 7.73 (t, J=6 Hz, 1H), 8.02 (t, J=5 Hz, 1H), 8.52 (m, 1H); MS
(ESI/APCT-) m/e 298 (M_H)+.
Example 134 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3 4-difluorobenzamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 mmol), 3,4-diflurobenzamide (79 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed.
The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 18 mg (55%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 2.58 (m, 2H), 2.79 (t, J=4 Hz, 2H), 3.32 (m, 2H), 4.28 (d, J=5 Hz, 2H), 6.71 (m, 1 H), 7.22 (m, 1 H), 7.55 (m, 2H), T.83 (m, 2H), 7.95 (t, J=6 Hz, 1H), 8.52 (m, 1H) 8.95 (t, J=S Hz, 1H); MS
(ESI/APCI-) m/e 328 (M-H)+.
Example 135 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyll-3 5-dimethoxybenzamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 rnmol), 3,5-dimethoxybenzamide (91 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 xnL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed.
The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 19 mg (55%) pure compound. 1H NMR (500 MHz, DMSO-d6) S 2.59 (m, 2H), 2.79 (t, J=4 Hz, 2H), 3.30 (rn, 2H), 3.79 (s, 3H), 3.80 (s, 3H), 4.25 (d, J=5 Hz, 2H), 6.65 (s, 1H), 6.71 (m, 1 H), 7.02 (s, 2H), 7.22 (m, 1 H), 7.52 (d, J=6 Hz, 1 H), 7.75 (t, J=6 Hz, 1 H), 8.52 (m, 1 H) 8.88 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 352 (M-H)+.
Example 136 N-(3-methylphen~~(4-phenyl-1-piperidinyl)acetamide The procedure described in Example 35 was followed, substituting 4-phenylpiperidine for 4-(2-methoxyphenyl)piperidine to provide the title compound (99% yield).
IH NMR (300 MHz, DMSO-d6) S 1.76 (m, 4H), 2.28 (m, SH), 2.51 (m, 1H), 2.98 (m, 2H), 3.12 (s, 2H), 6.88 (d, J=6 Hz, 1H), 7.19 (m, 2H), 7.29 (m, 4H), 7.46 (d, 2H), 9.61 (br s, 1H); MS
(DCI/NH3) m/e 310 (M+H)+; Anal. calcd for CZOH~4N20~0.2 HzO, C, 76.99; H, 7.88; N, 8.98.
Found: C, 76.88, H, 7.85, N, 8.81 Example 137 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide The desired material was prepared according to the procedure of Example 124B
by substituting the product from Example 124A with 2-chloro-N-(3-nitrophenyl)acetamide (Lancaster). Yield 48 mg (97%). IH NMR (300 MHz, DMSO-d6) 8 2.96 (br s, 2H), 3.45-3.75 (m, 2H), 4.05-4.20 (rn, 2H), 4.38 (s, 2H), 6.75 (br s, 1H), 7.38 (m, 1H), 7.66 (m, 2H), 7.89 (m, 2H), 8.00 (d, J=6 Hz, 1H), 8.60 (m, 1H), 8.63 (br s, 1H), 10.45 (br s, 1H), 11.08 (br s, 1H); MS (ESI/APCI+) m/e 339 (M+H)~.
Example 138 N-1-adamantyl-2-(4-(3-cyano-2-pyridinyl)-1-piperazinyllacetamide Example 138A
N-1-adamantyl-2-bromoacetamide The procedure described in Example lA was followed, substituting 1-adamantane amine for 3-methylaniline to provide the title compound (77°!°
yield) as a white solid. 1H
NMR (300 MHz, DMSO-d6) b 1.61 (m, 6H)', 1.91 (m, 6H), 2.01 (m, 3H), 3.76 (s, 2H), 7.74 (br s, 1H); MS (DCI/NH3) m/e 272/274 (M+H)+; 289/291 (M+NH4)+.
Example 138B
N-1-adamantyl-2-(4-(3-cyano-2-pYridinyl)-1-~iperazinyl]acetamide The procedure described in Example 121B was followed, substituting the product from Example 138A for the product from Example 121A to provide the title compound (50%
yield) as an colorless oil. 'H NMR (300 MHz, DMSO-d6) b 1.63 (m, 6H), 1.95 (m, 6H), 2.01 (m, 3H), 2.59 (m, 4H), 3.32 (s, 2H), 3.62 (m, 4H), 6.93 (dd, 1H, J=7.8, 5.1 Hz), 7.11 (br s, .
1H), 8.06 (dd, 1H, J=7.5, 1.7 Hz), 8.41 (dd, 1H, J=4.8, 1.7 Hz); MS (DCI/NH3) m/e 380 (M+H)+.
Maleate salt: white solid; Anal. calcd for CZZHa9Ns0~O.9 C4H4O4~O.3 C4H8O2: C, 63.07; H, 6.91; N, 13:72. Found: C, 63.41; H, 6.72; N, 13.45.
Example 139 3-methyl-N- ~ j2-meth-4 ~2-p;rridinyl)-1-piperazinyllmethyl ) benzamide Example 139A
3-methyl-1-(2-pyridin~)piperazine hydrobromide A solution of 2-methylpiperazine (1.0 g, 0.01 mol, racemic mixture) and 2-bromopyridine (10 mL, 0:1 mol) was heated to 120 °C for 16 hours. The reaction mixture was cooled to room temperature and partitioned between ethyl acetate and water. The layers were separated, and the water layer was concentrated under reduced pressure.
The residue was triturated with ethyl acetate, dichloromethane, and methanol to afford 460 mg (26%
yield) of racemic 3-methyl-1-pyridin-2-yl-piperazine hydrobromide as an off white solid. 1H
NMR (300 MHz, DMSO-d6) 8 1.27 (d, J=6.6 Hz, 3H), 2.90 (dd, J=10.5, 14.1 Hz, 1H), 3.10 (m, 2H), 3.40 (m, 2H), 4.32 (m, 2H), 6.77 (dd, J=4.8, 6.9 Hz, 1H), 6:98 (d, J=8.1 Hz~ 1H), 7.64 (m, 1H), 8.15 (m, 1H), 8.63 (br s, 1H), 8.92 (br s, 1H); MS (APCI) m/e 178 (M+H)+.
Example 139B
3-methyl-N-f f2-meth 1-~ 4=(2-pyridinyl)-1 piperazinyl]meth~l)benzamide A solution of the product from Example 139A (250 mg, 0.97 mmol), the product from Example 91A (201 mg, 0.97 mmol) and triethylamine (342 mg, 3.39 mmol) in acetonitrile (10 mL) was stirred at room temperature for 72 hours. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate solution was then washed with additional water, a solution of saturated sodium bicarbonate; and brine before drying over sodium sulfate, filtering, and concentrating under reduced pressure. The residue was purified by flash column chromatography on silica gel (2-5% ethanol:ethyl acetate) to afford 216 mg (69% yield) of the title compound. 1H NMR (300 MHz, DMSO-d6) 8 1.21 (d, J=5.4 Hz, 3H), 2.34 (s, 3H), 2.50 (m, 3H), 2.85 (m, 2H), 4.06 (br d, J=10.5 Hz, 2H), 4.29 (dd, J=13.5, 6.0 Hz, 1 H), 4.43 (dd, J=13 . 5, 6.0 Hz, 1 H), 6. 5 8 (m, 1 H), 6. 82 (d, J=8.7 Hz, 1 H), 7.34 (m, 2H), 7.48 (m, 1H), 7.63 (m, 2H), 8.07 (m, 1H), 8.54 (dd, J=6:0, 6.0 Hz, 1H); MS
(ESI) m/e 325 (M+H)+.
Example 140 N-(3-methylphenyl)-2- f 2-methyl-4-(2-pyridinyl)-1-piperazinyl] acetamide A solution of the product from Example 139A (250 mg, 0.97 mmol), the product from Example lA (221 mg, 0.97 mmol), N,N-diisopropylethylamine (313 mg, 2.42 mmol), and toluene (8 mL) was heated at 60 °C for 16 hours and then cooled to room temperature. The reaction mixture was concentrated under reduced pressure, and the residue purified by flash column chromatography on silica gel (ethyl acetate) to afford 256 mg (81 %
yield) of the title compound. 1HNMR (300 MHz, DMSO-d6) 8 1.06 (d, J=6.3 Hz, 3H), 2.27 (s, 3H), 2.58 (m, 2H), 2.80 (dd, J=12.3, 9.0 Hz, 1 H), 2.84 (m, 1 H), 3.10 (d, J=16.5 Hz, 1 H), 3.11 (m, 1 H), 3.3 8 (d, J=16.5 Hz, 1H), 4.00 (m, 2H), 6.63 (dd, J=8.1, 6.3 Hz, 1H), 6.84 (d, J=11.1 Hz, 1H), 6.89 (m, 1 H), 7.18 (m, 1 H), 7.44 (m, 2H), 7.52 (m, 1 H), 8.10 (m, 1 H), 9.63 (br s, 1 H); MS (ESI) mle 325 (M+H)+.
Example 141 3 5-dimethyl-N-f f4-(2-pyridinyl)-1-~iperidinyl]meth~~benzamide A mixture of the product from Example 36C (20 mg, 0.10 mmol), paraformaldehyde (30 mg, 1 mmol), 3,5-dimethylbenzamide (75 mg, 0.5 mmol), and 42 rng of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 23 mg (72°/~) pure compound. IH NMR
(500 MHz, DMSO-d6) 8 1.73 (m, 2H), 1.82 (m, 2H), 2.29 (m, 2H), 2.32 (s, 6H), 2.60 (m, 1H), 2.95 (m, 2H), 4.18 (d, J=5 Hz, 2H), 7.18 (m, 2H), 7.25 (d, J=6 Hz, 1H), 7.50 (s, 2H), 7.68 (t, J=6 Hz, 1H), 8.48 (d, J=6 Hz, 1H), 8.62 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 322 (M-H)+.
Example 142 N-(3',6'-dihydro-2,4'-bipyridin-1' 2'H)-ylmeth~)-3 5-dimethylbenzamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 mg, 0.10 mmol, Saari, W. S.; etal. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 mmol), 3,5-dimethylbenzamide (75 mg, 0.5 mmol), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 18 mg (56%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 2.33 (s, 6H), 2.56 (m, 2H), 2.78 (t, J=4 Hz, 2H), 3 .28 (m, 2H), 4.18 (d, J=5 Hz, 2H), 6.71 (m, 1 H), 7.18 (s, 1 H), 7.22 (m, 1 H), 7.50 (m, 3H),.'7.75 (t, J=6 Hz, 1H), 8.52 (d, J=5 Hz, 1H), 8.62 (t, J=5 Hz, 1H); MS
(ESI/APCI-) m/e 320 (M-H)+.
Example 143 3-methyl-N-f (3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)methyllbenzamide Example 143A
tert-butyl 3-methyl-3' 6'-dihydro-2 4'-bipyridine-1'(2'H)-carboxylate A solution of 4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (8.10 g, 24.8 mmol; Bursavich, M. G.; et al. Org. Lett.
2001, 3, 2317) in tetrahydrofuran (50 mL) was treated with 3-methyl-2-pyridylzinc bromide (0.5 M
in tetrahydrofuran, 65.0 mL, Aldrich), tetrakis(triphenylphosphine)-palladium(0) (280 mg, 0.24 mmol) and the mixture heated to 70 °C for 2 hours. The mixture was cooled to room temperature, concentrated under reduced pressure, the residue taken up in dichloromethane and washed with 1N sodium hydroxide. The organic phase was dried (magnesium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 50% ethyl acetate: hexanes) to provide 5.50 g (82% yield) of the title compound as a light yellow oil. 1H NMR (300 MHz, DMSO-d6) 8 1.44 (s, 9H), 2.32 (s, 3H), 2.44 (m, 2H), 3.54 (m, 2H), 3.99 (m, 2H), 5.88 (br s, 1H), 7.17 (dd, 1 H, J=7. 8, 4. 8 Hz), 7.62 (br d, 1 H, J=7.5 Hz), 8.3 6 (dd, 1 H, J=4. 8, 1.7 Hz); MS (DCI/NH3) m/e 275 (M+H)+; 292 (M+NH4)+.
Example 143B
3-methyl-1',2';3',6'-tetrahydro-2,4'-bip 'dine The product from Example 143A (1.00 g, 3.64 mmol) in ethyl acetate (25 mL) was cooled to -78 °C and treated with a stream of hydrogen chloride gas for 10 minutes. The reaction mixture was allowed to warmed to room temperature with stirring. The solvent was removed under reduced pressure and the residue triturated with ethyl acetate, filtered and dried under vacuum overnight to provide the title compound as a white solid (HCl salt). 1H
NMR (300 MHz, DMSO-d6) 8 2.43 (s, 3H), 2.71 (m, 2H), 3.31 (m, 2H), 3.79 (m, 2H), 6.08 (br s, 1 H), 7.66 (dd, 1 H, J=6. 8, 5. 8 Hz), 8.18 (br d, 1 H, J=6.6 Hz), 8. 5 8 (d, 1 H, J=5.1 Hz);
MS (DCI/NH3) m/e 175 (M+H)+.
Example 143C
3-methyl-N-f(3-methyl-3',6'-dih~dro-2 4'-bipyridin-1'(2'Hl-~)methyllbenzamide A mixture of the product from Example 143B (trifluoroacetic acid salt; 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 3-methylbenzamide (68 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 12.5 mg, (39%) pure compound.
IH NMR (500 MHz, DMSO-d6) ~ 2.30 (s, 3H), 2.38 (s, 3H), 2.48 (m, 2H), 2.78 (m, 2H), 3.25 (m, 2H), 4.28 (d, J=6 Hz, 2H), 5.82 (m, 1H), 7.18 (t, J=6 Hz, 1H), 7.38 (m, 2H), 7.60 (t, J=6 Hz, 1H), 7.71 (m, 2H), 8.38 (d, J=6 Hz, 1H), 8.79 (t, J=6 Hz, 1H); MS
(ESI/APCI-) m/e 320 (M_H)+.
Example 144 N-f (3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyll-3-methylbenzamide Example 144A
tent-butyl 3-cyano-3',6'-dihydro-2 4'-bipyridine-1'(2'H)-carbox, A mixture of 4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (0.90 g, 2.7 mmol; Bursavich, M. G.; et al. Org. Lett.
2001, 3, 2317), lithium chloride (0.9 g, 20 mmol), hexamethylditin (1.0 mg, 3.05 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.32 mmol) in dioxane (40 mL) was heated was heated up under NZ at 100 °C overnight. The mixture was cooled to room temperature, and concentrated. The residue was diluted with ethyl acetate (100 mL), filtered through i Celite~, the filtrate washed with sodium bicarbonate solution (30 mL) and brine (30 mL).
The organic phase was dried over magnesium sulfate, concentrated to give 1.3 g of crude product, which was used without purification. A mixture of the above crude solid, 2-chloro-3-cyanopyridine (l.l equivalents), lithium chloride (0.9 g, 20 mmol), and tetrakis(triphenylphosphine)palladium(0) (0.34 g, 0.3 mmol) in N,N-dimethylformamide (35 mL) was heated up under NZ at 120 °C overnight. The mixture was cooled to room temperature, and concentrated. The residue was diluted with ethyl acetate (100 mL), washed with water (2 x 30 mL), dried over magnesium sulfate, and concentrated. The residue was purified by flash column chromatography on silica gel to give 0.39 g of product. IH NMR

(300 MHz, DMSO-d6) 8 1.40 (s, 9H), 2.60 (m, 2H), 3.55 (m, 2H), 4.05 (m, 2H), 6.50 (br s, 1 H), .7.50 (m, 1,H), 8.3 5 (m, J. H), 8.90 (m, 1 H).
Example 144B
1',2',3',6'-tetrahvdro-2 4'-bipyridine-3-carbonitrile To the product from Example 144A was added trifluoroacetic acid/dichloromethane (l:l, 10 mL) at room temperature. The mixture was stirred for 5 hours. The solvent was removed to give 0.55 g of product. 'H NMR (300 MHz, DMSO-d6) 8 2.80 (m, 2H), 3.40 (m, 2H), 3.95 (m, 2H), 6.55 (br s, 1H), 7.60 (rn, 1H), 8.40 (m, 1H), 8.90 (m, 1H), 9.00 (m, 2H);
MS (ESI/APCI+) m/e 186 (M+H)+.
Example 144C
N-f (3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)- 1 methyl] 3 methylbenzamide A mixture of the product from Example 144B ( 30 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 3-methylbenzamide (70 mg, 0.5 mmol), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight.
The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 10 mg (32%) pure compound. 1H NMR (500 MHz;
DMSO-db) 8 2.36 (s, 3H), 2.62 (m, 2H), 2.79 (m, 2H), 3.32 (m, 2H), 4.24 (d, J=5 Hz, 2H), 4.66 (d, J=5 Hz, 1H), 6.50 (m, 1H), 7.35 (m, 2H), 7.49 (m, 1H), 7.72 (m, 2H), 8.29 (d, J=6 Hz, 1H), 8.78 (m, 1H); MS (ESI/APCI-) m/e 331 (M-H)+.
Example 145 N-(2,6-dimethylphenyll-2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin 1'(2'H) yl acetamide A mixture of the product from Example 143B (trifluoroacetic acid salt; 23 mg, 0.08 mmol), 2-chloro-N-(2,6-dimethylphenyl)acetamide (20 mg, 0.1 mmol, Aldrich) and sodium carbonate (50 mg) in dimethylformamide/water (3:1, 1 mL) was shaken at room temperature for 18 hours. The resulting mixture was concentrated under reduced pressure.
The residue was purified by preparative HPLC to provide 10 mg (28%) of the title compound as a trifluoroacetic acid salt. 1H NMR (300 MHz,. DMSO-d6) ~ 2.20 (s, 6H), 2.40 (s, 3H), 2.80 .
(m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.39 (s, 2H), 5.92 (br s, 1H), 7.10 (m, 3H), 7.33 (m, 1H), 7.78 (m, 1H), 8.43 (m, 1H), 10.00 (br s, 1H), 10.42 (m, 1H); MS
(ESI/APCI+) m/e 3 3 6 (M+H)+. .
Exam lp a 146 N-(4-fluoronhenyl)-2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(4-fluorophenyl)acetamide (Maybridge). Yield 9 mg (26%). iH NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.36 (s, 2H), 5.92 (br s, 1 H), 7.20 (m, 2H), 7.3 5 (m, 1 H), 7.63 (m, 2H), 7. 80 (m, 1 H), 8.43 (m, 1 H), 10.45 (m, 1 H), 10.62 (br s, 1H); MS (ESI/APCI+) m/e 326 (M+H)+.
Example 147 N-(2,4-difluorophenyll-2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(2,4-difluorophenyl)acetamide (Maybridge). Yield 12 mg (33%). IH NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.38 (s, 2H), 5.90 (br s, 1 H), 7.12 (m, 1 H), 7.3 5 (m, 1 H), 7.40 (m, 1 H), 7.78 (m, 1 H), 7. 82 (m, 1 H), 8.42 (m, 1 H), 10.40 (m, 1H), 10.45 (br s, 1H); MS (ESI/APCI+) m/e 344 (M+H)+.
Example 148 2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-o-tolylacetamide (Maybridge). Yield 12 mg (34%). 'H NMR (300 MHz, DMSO-d6) 8 2.22 (s, 3H), 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.38 (s, 2H), 5.92 (br s, 1H), 7.19 (m, 1 H), 7.22 (m, 1 H), 7.26 (m, 1 H), 7.3 6 (m, 1 H), 7.42 (m, 1 H), 7.80 (m, 1 H), 8.44 (m, 1 H), 10.00 (br s, 1H), 10.42 (m, 1H); MS (ESI/APCI+) m/e 322 (M+H)+.
Example 149 2-(3-methyl-3',6'-dihvdro-2 4'-bipyridin-1'(2'H)-yl)-N-[3~trifluoromethyl)phenyllacetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(3-trifluoromethylphenyl)acetamide (Maybridge). Yield 9 mg (23%). 1H NMR (300 MHz, DMSO-d6) S 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.37 (s, 2H), 5.92 (br s, 1H), 7.37 (m, 1H), 7.52 (m, 1H), 7.62 (m, 1H), 7.79 (m, 2H), 8.10 (m, 1H), 8.44 (m, 1H), 10.42 (m, 1H), 11.00 (br s, 1H); MS (ESI/APCI+) m/e 376 (M+H)+.
Example 150 N-(3-chloro-4-fluorophenyl)-2-(3.-methyl-3' 6'-dihydro-2 4'-bipyridin 1'(2'H) yl acetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(3-chloro-4-fluorophenyl)acetamide (Maybridge). Yield 9 mg (24%). IH NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.33 (s, 2H), 5.95 (br s, 1 H), 7. 3 6 (m, 1 H), 7.44 (m, 2H), 7. 7 8 (m, 1 H), 7. 92 (m, 1 H), 8.44 (m, 1 H), 10.42 (m, 1 H), 10.82 (br s, 1H); MS (ESI/APCT+) m/e 360 (M+H)+.
Example 151 2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-~l)-N;~4-(trifluoromethoxy)phenyllacetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetarnide with 2-chloro-N-(4-trifluoromethoxyphenyl)acetamide (Maybridge). Yield 9 mg (22%). IH NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.30 (s, 2H), 5.92 (br s, 1H), 7.36 (m, 1H), 7.40 (rn, 2H), 7.77 (rn, 2H), 7.82 (m, lH), 8.42 (m, 1H), 10.42 (m, 1H), 10.80 (br s, 1H); MS (ESI/APCI+) m/e 392 (M+H)+.
Example 152 2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'HLyI)-N-(2-(trifluoromethyl)phenvl]acetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(2-trifluoromethylphenyl)acetamide (Maybridge). Yield .TO mg (26%). 1H NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (riy 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.35 (s, 2H), 5.92 (br s, 1 H), 7.3 6 (m, 1 H), 7.60 (m, 2H), 7. 80 (m, 3H), 8.42 (m, 1 H), 10.40 (br s, 1 H), 10.42 (m, 1H); MS (ESI/APCI+) rn/e 376 (M+H)+.
Example 153 N-(2,3-dichlorophenyl)-2-(3-methyl-3' 6'-dihydro 2 4' bipyridin 1'(2'H) yl)acetamide The desired material was, prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(3,4-dichlorophenyl)acetamide (Maybridge). Yield 10 mg (26%). 1H NMR (300 MHz, DMSO-d6), ~ 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.40 (s, 2H), 5.92 (br s, 1H), 7.37 (m, 1H), 7.42 (m, 1H), 7.58 (m, 1H), 7.77 (m, 1H), 7.81 (m, 1H), 8.42 (m, 1H), 10.42 (br s, 1H), 10.45 (m, 1H); MS (ESIIAPCI+) m/e 377 (M+H)+.
Example 154 2-(3-methyl-3' 6'-dihydro-2 4'-bipyridin-1'(2'H) yl) N (4 (trifluorometh~)phenyllacetamide The desired material was prepared according to the procedure of Example 145 by substituting 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(4-trifluoromethylphenyl)acetamide (Maybridge). Yield 11 mg (28%). 1H NMR (300 MHz, DMSO-d6) 8 2.40 (s, 3H), 2.80 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.37 (s, 2H), 5.92 (br s, 1H), 7.36 (m, 1H), 7.78 (m, 3H), 7.82 (m, 2H), 8.42 (m, 1H), 10.42 (m, 1H), 10.98 (br s, 1H); MS (ESI/APCI+) m/e 376 (M+H)+, Example 155 2-f4-(3-cyano-2-thienyl)-3 6-dihydro-1(2H~ 'dinyll N (3 methylphenyl acetamide Example 155A
2-(1 2 3 6-tetrahydro-4-pyridinyl)-3-thiophenecarbonitrile trifluoracetate The desired material was prepared according to the procedure of Examples 144A
and 144B by substituting 2-bromo-3-methyl-pyridine with thiophene-3-carbonitrile.

(300 MHz, DMSO-d6) 8 2.80 (m, 2H), 3.40 (m, 2H), 3.90 (m, 2H), 6.45 (br s, 1H), 7.45 (m, 1H), 7.75 (m, 1H), 8.95 (m, 2H); MS (ESI/APCI+) m/e 191 (M+H)+.
Example 155B

2-f4-(3-cyano-2-thienyl)-3 6-dih dro-1(2H)-pyridinyll-N-(3-meth lpy_, henyl acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product from Example 143B.with the product from Example 155A, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with the product from Example 33A.
Yield 13 mg (36%). 'H NMR (300 MHz, DMSO-d6) 8 2.30 (s, 3H), 2.90 (m, 2H), 3.50-4.20 (m, 4H), 4:30 (s, 2H), 6.43 (br s, 1H), 6.98 (m, 1H), 7.24 (m, 1H), 7.42 (m, 2H), 7.50 (m, 1H), 7.78 (m, 1H), 10.42 (m, 1H), 10.44 (br s, 1H); MS (ESI/APCI+) m/e 338 (M+H)+.
Example 156 2-(3-cyano-3',6'-dihydro-2 4'-bipyridin-1'(2'H)-vl)-N-(2 6-dimethylphenyl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B.
Yield 10 mg (27%). 1H NMR (300 MHz, DMSO-d6) ~ 2.20 (s, 6H), 2.90 (m, 2H), 3.50-3.70 ~(m, 2H), 4.00-4.15 (m, 2H), 4.37 (s, 2H), 6.55 (br s, 1H), 7.20 (m, 3H), 7.55 (m, 1H), 8.40 (m, 1H), 8.80 (m, 1H), 10.00 (br s, 1H), 10.45 (m, 1H); MS (ESI/APCI+) m/e 347 (M+H)+.
Example 157 2-(3-cyano-3',6'-dihydro-2 4'-bipyridin-1'(2'HLyI)-N-(4-fluorophenyllacetamide The desired material was prepared according to the procedure of Example 145 by substituting by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide. with 2-chloro-N-(4-fluorophenyl)acetamide (Maybridge). .Yield 11 mg (31%). 1H NMR (300 MHz, DMSO-d6) 8 2.95 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.37 (s, 2H), 6.55 (br s, 1H), 7.20 (m, 2H), 7.65 (m, 3H), 8.40 (m, 1 H), 8.85 (m, 1 H), 10.50 (m, 1 H), 10.70 (br s, 1 H); MS
(ESI/APCI+) m/e 337 (M+I~+.
Example 158 2-(3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N-(2 4-difluorophenvl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(2,4-difluorophenyl)acetamide (Maybridge). Yield 11 mg (29%). 1H NMR (300 MHz, DMSO-d6) b 2.95 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.35 (s, 2H), 6.55 (br s, 1H), 7.20 (m, 1H), 7.40 (m, 1H), 7.60 ' (in, 1 H), 7. 85 (rn, 1 H), 8.40 (m, 1 H), 8.85 (m, 1 H), 10.50 (m, 1 H), 10.55 (br s, 1 H); MS
(ESI/APCI+) m/e 355 (M+I~+.
Example 159 2-(3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(,2'H)-Yl)-N-(2-meth ly phenyl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloio-N-o-tolylacetamide (Maybridge).
Yield 11 mg (31%). 1H NMR (300 MHz, DMSO-d6) 8 2.20 (s, 3H), 2.95 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.35 (s, 2H), 6.60 (br s, 1H), 7.20 (m, 3H), 7.45 (m, 1H), 7.60 (m, 1 H), 8.40 (m, 1 H), 8.80 (m, 1 H), 10.00 (br s, 1 H), 10.55. (m, 1 H); MS
(ESI/APCI+) m/e 333 (M+H)+.
Example 160 2-(3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N
j~trifluoromethyl)phenyl]acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(3-trifluoromethylphenyl)acetamide (Maybridge). Yield 11 rng (28%). IH NMR (300 MHz, DMSO-d6) 8 2.90 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.30 (s, 2H), 6.55 (br s, 1H), 7.60 (m, 3H), 7.75 (m, 1H), 8.10 (m, 1H), 8.40 (m, 1H), 8.80 (m, 1H), 10.50 (m, 1H), 10.95 (br s, 1H); MS (ESIIAPCI+) m/e 387 (M+H)+.
Example 161 2-(3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N-[4~trifluoromethoxy~phenyl]acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(4-trifluoromethoxyphenyl)acetamide (Maybridge). Yield 11 mg (27%). IH NMR (300 MHz, DMSO-d6) ~ 2.90 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.35 (s, 2H), 6.55 (br s, 1H), 7.40 (m, 2H), 7.60 (m, 1H), 7.75 (m, 2H), 8.40 (m, 1H), 8.80 (m, 1H), 10.50 (m, 1H), 10.80 (br s, 1H); MS (ESI/APCI+) m/e 403 (M+H)+.
Example 162 2-(3-cyano-3',6'-dih~rdro-2,4'-bipyridin-1' 2'H)-yl)-N-[2-(trifluoromethyl)phenvl]acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N,(2-trifluoromethylphenyl)acetamide (Maybridge). Yield 11 mg (28%). 1H NMR (300 MHz, DMSO-d6) 8 2.90 (m, 2H), 3.50-3.70 (m, 2H), 4.00-4.15 (m, 2H), 4.35 (s, 2H), 6.55 (br s, 1 H), 7.55 (m, 3H), 7.80 (m, 2H), 8.40 (m, 1 H), 8.80 (m, 1 H), 10.40 (br s, 1 H), 10.50 (rn, 1 H);
MS (ESI/APCI+) m/e 387 (M+H)+.
Example 163 2-(3-cyano-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N-(2 3-dichlorophenyl)acetamide The desired material was prepared according to the procedure of Example 145 by substituting the product of Example 143B with the product from Example 144B, and 2-chloro-N-(2,6-dimethylphenyl)acetamide with 2-chloro-N-(2,3-dichlorophenyl)acetamide (Maybridge). Yield 12 mg (30%). IH NMR (300 MHz, DMSO-d6) S 2.90 (m, 2H), 3.50-3 .70 (m, 2H), 4.00-4.15 (m, 2H), 4.3 5 (s, 2H), 6.55 (br s, 1 H), 7.40 (m, 2H), 7.60 (m, 2H), 8.40 (m, 1H), 8.80 (m, 1H), 10.50 (m, 2H); MS (ESI/APCI+) m/e 388 (M+H)+.
Example 164 3-methyl-N- f f 4-(6-oxo-1 (6H)-pyridazinyl)-1-piperidinyl]methyl ~ benzamide The procedure described in Example 111 was followed, substituting the product from Example 40B.for 4-(2-methoxyphenyl)piperidine to provide the title compound (99% yield).
1H NMR (300 MHz, DMSO-d6) 8 1.74 (m, 2H), 1.88 (m, 2H), 2.37 (s, 3H), 2.39 (m, 2H), 2.99 (m, 2H), 4.,19 (m, 2H), 4.71 (s, 1H), 6.91 (dd, J=9, 1.5 Hz, 1H), 7.38 (m, 3H), 7.69 (m, 2H), 7.96 (dd, J=9.0, 3.0 Hz, 1H), 8.75 (br s,~lH); MS (DCI/NH3) m/e 327 (M+H)+.
Maleate salt: Anal. calcd for C18HZZN4O2~1.25 C4H4O4~l.S HZO: C, 55.42; H, 6.07; N, 11.24.
Found: C, 55.25; H, 5.88; N, 13.03 Example 165 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-adamantanecarboxamide Prepared in the same manner as Example 115 substituting 1-adamantanecarboxamide (Aldrich) for 3-methoxybenzamide (43 mg, 6% yield). 1H NMR (300 MHz, DMSO-d6) S
1.66 (m, 6H), 1.80 (m, 6H), 1.95 (m, 3H), 2.30 (m, 2H), 2.66 (t, J=4.5 Hz, 2H), 3.15 (m, 2H), 4.06 (d, J=6 Hz, 2H), 6.68 (m, 1H), 7.21 (m, 1H), 7.51 (d, J=6 Hz, 1H), 7.72 (m, 2H), 8.51 (m, 1H); MS (DCI/NH3) m/e 352 (M+H)+.
Example 166 3-methyl-N-f[~1,3-thiazol-2-yl)-3,6-dihydro-1(2H)-pvridin lly__methyl,~benzamide Example 166A
tent-butyl 4-( 1,3-thiazol-2-yl)-3,6-dihydro-1 (2H~pyridinecarboxylate The procedure described in Example 143A was followed, substituting 2-thiazolylzinc bromide for 3-methyl-2-pyridylzinc bromide to provide the title compound (56%
yield). iH
NMR (300 MHz, CDC13) 8 1.5 (s, 9H), 2.7 (m, 2H), 3.33 (t, 2H, J=6 Hz), 4.10 (q, 2H, J=3 Hz), 6.60 (m, 1H), 7.21 (d, 1H, J=3 Hz), 7.78 (d, 1H, J=3 Hz); MS (DCI/NH3) m/e 267 (M+H)+.
Example 166B
~1,3-thiazol-2-yl)-1,2,3,6-tetrahydropyridine A solution of the product from Example 166A (3.62 g, 13.6 mmol) in 25%
trifluoroacetic acid/dichloromethane (30 mL) was stirred at room temperature for 2 hours.
The reaction was concentrated under reduced pressure to afford brown oil (1.69 g, 74%). 1H
NMR (300 MHz, CDC13) 8 2.55 (m, 2H), 3.12 (t, 2H, J=6 Hz), 3.59 (rn, 2H), 6.63 (m, 1 H), 7.20 (d, 1H, J=3 Hz), 7.75 (d, 1H, J=3 Hz); MS (DCI/NH3) m/e 167 (M+H)+.
Example 1660 3-methyl-N-f [4-(1,3-thiazol-2-~)-3,6-dihydro-1~2H~pyridinyl]methyl~benzamide The procedure described in Example 200 was followed, substituting the product from Example.166B for the product from Example 119A to provide the title compound as a yellow sticky residue 680 mg (36%). IH NMR (300 MHz, CDC13) 8 2.4 (s, 3H), 2.8 (m, 2H), 2.95 (t, 2H, 4.5 Hz), 3.42 (m, 2H), 4.5 (d, 2H, J=6 Hz), 6.6 (m, 1H), 7.2 (d, 1H, J=3 Hz), 7.35 (dd, 2H, J=4.5 Hz, 1.5 Hz), 7.49 (m, 1H), 7.52 (s, 1H), 7.78 (d, 1H, J=3 Hz); MS
(DCI/NH3) m/e 314 (M+H)+. Maleate salt: Anal. calcd for Cl~Hi9N3OS~1.O CqH4O4~O.S H2O: C, 57.52; H, 5.52; N, 9.58. Found: C, 57.48; H, 5.33; N, 9.52.
Example 167 2-~4-(3-cyano-2-pyridin 1~)-1-piperazinyl]-N-1,2 3 4-tetrahydro-1-naphthalenylacetamide Example 167A
2-bromo-N-1,2,3,4-tetrahydro-1-n ~hthalenylacetamide The procedure described in Example lA was followed, substituting (~)-1,2,3,4-tetrahydro-1-naphthylamine hydrochloride for 3-methylaniline to provide the title compound (22% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.75 (m, 4H), 2.73 (m, 2H), 3.87 (ABq, 2H, J~=10.5 Hz, Ova=8.5 Hz), 4.91 (m, 1 H), 7.15 (m, 4H), 8.65 (br d, 1 H, J=8.5 Hz); MS (DCI/NH3) m/e 268/270 (M+H)+; 285/287 (M+NH4)+.
Example 167B
2-f4-(3-cyano-2-pyridinyl)-1-piperazinyl]'-N-1 2 3 4-tetrahydro-1-naphthalenylacetamide The procedure described in Example 121B was followed, substituting the product from Example 167A for the product from Example 121A to provide the title compound (87%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d~) 8 1.81 (m, 4H), 2.63 (m, 4H), 2.74 (m, 2H), 3.08 (ABq, 2H, J,~=15.3 Hz, Ova=8.8 Hz), 3.62 (m, 4H), 5.02 (m, 1H), 6.92 (dd, 1H, J=7.5, 4.8 Hz), 7.13 (m, 4H), 8.06 (dd, 1H, J=7.8, 2.0 Hz), 8.06 (m overlapped, 1H), 8.40 (dd, 1H, J=4.8, 2.0 Hz); MS (DCI/NH3) m/e 376 (M+H)+; Anal. calcd for CZZHzsNsO: C, 70.38; H, 6.71; N, 18.65. Found: C, 69.99; H, 6.85; N, 18.59.
Example 168 2-f4-(3-cyano-2-pyridinyl)-1-piperazinyll-N-[(1S)-1 2 3 4-tetrahydro-1 naphthalenyl]acetamide Example 168A
2-bromo-N-f(1S)-1 2,3 4-tetra~dro-1-naphthalenyl]acetamide The procedure described in Example lA was followed, substituting (S)-1,2,3,4-tetrahydro-1-naphthylamine (Lancaster) for 3-methylaniline to provide the title compound (87% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.79 (m, 4H), 2.73 (m, 2H), 3.87 (ABq, 2H, J,~=10.9 Hz, dv~=8.6 Hz), 4.93 (m, 1H), 7.15 (m, 4H), 8.65 (br d, 1H, J=8.5 Hz); MS (DCI/NH3) m/e 268/270 (M+H)+; 285/287 (M+NH4)+.
Example 168B
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[( 1 Sl-1,2,3,4-tetrahydro-1-naphthalenyllacetamide The procedure described in Example 121B was followed, substituting the product from Example 168A for the product from Example 121A to provide the title compound (67%
yield) as a white solid. [a]23D -39.37° (c 0.315, CHCl3); IH NMR (300 MHz, DMSO-d6) 8 1.81 (m, 4H), 2.62 (m, 4H), 2.74 (m, 2H), 3.08 (ABq, 2H, J~=14.9 Hz, Ov,~=8.8 Hz), 3.61 (m, 4H), 5.00 (m, 1 H), 6.92 (dd, 1 H, J=7.8, 4.8 Hz), 7.12 (m, 4H), 8.06 (dd, 1 H, J=7.8, 2.0 Hz), 8.06 (m, overlapped, 1H), 8.40 (dd, 1H, J=4.8, 2.0 Hz); MS (DCI/NH3) m/e (M+H)+; Anal. calcd for C22HzsNsO: C, 70.38; H, 6.71; N, 18.65. Found: C, 70.00; H, 6.90;
N, 18.26.
Example 169 2-f4-f3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1R)-1,2,3,4-tetrahydro-1-naphthalen~lacetamide Example 169A
2-bromo-N-[(1R)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide The procedure described in Example lA was followed, substituting (R)-1,2,3,4-tetrahydro-1-naphthylamine (Lancaster) for 3-methylaniline to provide the title compound (52% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 6 1.78 (m, 4H), 2.73 (m, 2H), 3.87 (ABq, 2H, J~=10.9 Hz, Ov,~=8.6 Hz), 4.93 (m, 1H), 7.15 (m, 4H), 8.65 (br d, 1H, J=8.5 Hz); MS (DCI/NH3) m/e 2681270 (M+H)+; 285/287 (M+NH4)+.
Example 169B

2-[4-(3-cyano-2-pyridinyl)-1=piperazinyll-N-f(1R1-1 2 3 4-tetrahydro-1-naphthalenyllacetamide The procedure described in Example 121B was followed, substituting the product from Example 169A for the product from Example 121A to provide the title compound (69%
yield) as a white solid. [a,]23D +41.97° (c 0.305, CHCl3); 1H NMR (300 MHz, DMSO-d6) 8 1.79 (m, 4H), 2.63 (m, 4H), 2.74 (m, 2H), 3.08 (ABq, 2H, JAB=15.3 Hz, OvAB=8.8 Hz), 3.61 (m, 4H), 5.01 (m, 1 H), 6.92 (dd, 1 H, J=7.8, 4.8 Hz), 7.12 (m, 4H), 8.06 (dd, 1 H, J=7.8, 2.0 Hz), 8.06 (m, overlapped, 1H), 8.40 (dd, 1H, J=4.8, 2.0 Hz); MS (DCI/NH3) m/e (M+H)+; Anal. calcd for CZaHa5N50~0.2 H20: C, 69.71; H, 6.75; N, 18.47. Found:
C, 69.63;
H, 6.75; N, 18.49.
Example 170 N-(2,6-diethylphenyl)-2-[4-(2-p ridinyl)-1-~peridin~lacetamide To a 23 °C solution of 2,6-diethylaniline (59 mg, 0.394 mmol) and dichloromethane (1.5 mL) was added pyridine (52 mg, 0.656 mmol) and chloroacetyl chloride (37 mg, 0.328 mmol), and the reaction mixture vigorously shaken for 3 hours. To this reaction mixture was added a suspension of the product from Example 36C (hydrochloride salt, 50 mg, 0.253 mrnol), sodium carbonate (115 mg, 1.08 mmol), N,N-dimethylformamide (2.2 mL) and water (l.l mL), and the resultant mixture shaken overnight for 16 hours. The solvent was removed under reduced pressure, and the residue was suspended in a solution of dimethylsulfoxide (1.5 mL) and methanol (1.5 mL). This suspension was filtered through a pad of Celite~, and the filtrate was purified via preparative HPLC on a Waters Nova-Pak HR C 18 column (40 mm X 100 mm, 6 ~m particle size) using a gradient of 10% to 100%
acetonitrile:aqueous ammonium acetate (10 mM) over 12 minutes (15 minutes run time) at a flow rate of 70 mL/minute to provide the title compound (yield: 22.7 mg, 0.065 mmol, 26%). iH
NMR (300 MHz, DMSO-d6) 8 1.12 (t, J=7.5 Hz, 6H), 1.90 (m, 4H), 2.32 (m, 2H), 2.50 (q, J=7.5 Hz, 4H), 2.70 (m, 1H), 3.05 (m, 2H), 3.14 (s, 2H), 7.09 (m, 2H), 7.19 (m, 2H), 7.32 (d, J=8.1 Hz, 1 H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1 H), 8.49 (m, 1 H), 9.23 (br s, 1 H); MS
(ESI) m/e 3 52 (M+H)+; Anal. calcd for C22H29N3O~O.25CZH4O2~O.25HZO: C, 72.84; H, 8.29; N, 11.33.
Found: C, 72.71; H, 8.04; N, 11.59.
Example 171 2-[4-(2-p~ridinyl)-1-piperidin,~ll-N-(2 4,6-trifluoronhenyl)acetamide The title compound was prepared according to the method of Example 170 substituting 2,4,6-trifluoroaniline in place of 2,6-diethylaniline (yield:
35.3 mg, 0.101 mmol, 40%). 1H NMR (300 MHz, DMSO-d6) 8 1.86 (m, 4H), 2.27 (m, 2H), 2.67 (m, 1H), 3.01 (br d, J=10.5 Hz, 2H), 3.18 (s, 2H), 7.24 (m, 4H), 7.73 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.49 (m, 1H), 9.44 (br s, 1H); MS (ESI) m/e 350 (M+H)+; Anal. calcd for C~$H~$F3N30~0.1 CZH402~0.1 HZO: C, 61.20; H, 5.25; N, 11.77. Found: C, 61.22; H, 5.18; N, 11.78.
Example 172 N-(4-chloro-2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-p~eridinyl]acetamide The title compound was prepared according to the method of Example 170 substituting 4-chloro-2,6-dimethylaniline hydrochloride in place of 2,6-diethylaniline and adding one additional equivalent each of pyridine and sodium carbonate.
(yield: 22.9 mg, 0.064 mmol, 25%). 1H NMR (300 MHz, DMSO-db) 8 1.90 (m, 4H), 2.05 (s, 3H), 2.14 (s, 6H), 2.30 (m, 2H), 2.67 (m, 1H), 3.04 (m, 2H), 3.16 (s, 2H), 4.67 (br s, 1H), 6.83 (s, 2H, min.
rot.), 7.16 (s, 2H, maj. rot.), 7.20 (m, 1H), 7.29 (br d, J=7.5 Hz, 1H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.48 (m, 1H), 9.27 (br s, 1H), ; MS (ESI) m/e 358 (M+H)+; Anal.
calcd for C2oH24C1N30~0.35 CZH402~0.15 H20: C, 65.15; H, 6.79; N, 11.01. Found: C, 65.19; H, 6.76;
N, 11.02.
Example 173 2-[4-(2-pyridinyl)-1-piperidinyl]'-N-(2,4,6-trichlorophenyl)acetamide The title compound was prepared according to the method of Example 170 substituting 2,4,6-trichloroaniline in place of 2,6-diethylaniline (yield:
21.2 mg, 0.053 mmol, 21%). 1H NMR (300 MHz, DMSO-d6) 8 1.84 (m, 4H), 2.48 (m, 2H), 2.67 (m, 1H), 3.10 (br d, J=10.5 Hz, 2H), 3.17 (s, 2H), 7.21 (m, 1H), 7.30 (d, J=7.8 Hz, 1H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 7.77 (s, 2H), 8.48 (m, 1H); MS (ESI) m/e 400 (M+I-~+; Anal. calcd for C18H18C13N30~0.1 C4Ii404~0.55 HZO: C, 50.36; H, 4.44; N, 8.01. Found: C, 50.32; H, 4.17;
N, 7.74.
Example 174 N-(2,6-diethy~henyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'Hl~l)acetamide The title compound was prepared according to the method of Example 170 substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W.
S.; et al. J. Med.
Chem. 1984, 27, 1182) in place of the product from Example 36C. The purification also employed 0.1% aqueous trifluoroacetic acid in place of aqueous ammonium acetate (10 mM).
(yield: 45 mg, 0.067 mmol, 26%). 'H NMR (300 MHz, DMSO-d6) 8 1.14 (t, J=7.5, 7.5 Hz, 6H), 2.50 (q, J=7.5 Hz, 4H), 2.92 (m, 2H), 3.46 (m, 1 H), 3.50 (m, 1 H), 4.02 (m, 1 H), 4.17 (m, 1 H), 4.3 9 (s, 2H), 6.74 (br s, 1 H), 7.16 (m, 2H), 7.24 (dd, J=6.0, 8.4 Hz, 1 H), 7.34 (m, 1 H), 7.66 (m, 1H), 7.85 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.60 (m, 1H), 9.93 (s, 1H);
MS (ESI) m/e 350 (M+H)+; Anal. calcd for C22HZ~N30~2.8 CZHF30Z: C, 49.57; H, 4.49; N, 6.28.
Found: C, 49.48; H, 4.50; N, 6.33.
Example 175 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-~)-N-(2,4,6-trifluorophen~rl)acetamide The title compound was prepared according to the method of Example 170 substituting 2,4,6-trifluoroaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W. S.; et al. J. Med. Chem.
1984, 27, 1182) in place of the product from Example 36C. The purification also employed 0.1%
aqueous trifluoroacetic acid in place of aqueous ammonium acetate (10 mM). (yield: 59 mg, 0.084 mmol, 33°1°). 1H NMR (300 MHz, DMSO-d6) 8 2.92 (m, 2H), 3.45 (m, 1H), 3.68 (m, 1H), 4.03 (m, 1H), 4.12 (m, 1H), 4.42 (s, 2H), 6.71 (br s, 1H), 7.37 (m, 3H), 7.66 (d, J=8.4 Hz, 1H), 7.85 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.58 (m, 1H), 10.44 (s, 1H); MS (ESI) m/e 348 (M+H)+; Anal. calcd for CI8HI6F3N3O~3.1 CZHF3O2: C, 41.48; H, 2.75; N, 6.00.
Found: C, 41.54; H, 2.57; N, 5.99.
Example 176 N-(4-chloro-2,6-dimeth~pheny-1]-2-(3',6'-dihydro-2,4'-b~yridin-1'(2'H) yl)acetamide The title compound was prepared according to the method of Example 170 substituting 4-chloro-2,6-dimethylaniline hydrochloride in place of 2,6-diethylaniline;
substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W.
S.; et al. J. Med.
Chem. 1984, 27, 1182) in place of the product from Example 36C; and, adding one additional equivalent each of pyridine and sodium carbonate. The purification also employed 0.1%
aqueous trifluoroacetic acid in place of aqueous ammonium acetate (10 mM).
(yield: 53 mg, 0.075 mmol, 29%). 1H NMR (300 MHz, DMSO-d6) 8 2.18 (s, 6H), 2.92 (m, 2H), 3.46 (m, 1 H), 3.68 (m, 1 H), 4.03 (m, 1 H), 4.14 (m, 1 H), 4.3 8 (s, 2H), 6.73 (br s, 1 H), 7.23 (s, 2H), 7.34 (m, 1H), 7.66 (br d, J=8.4 Hz, 1H), 7.85 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.59 (m, 1H), 10.0 (s, 1H); MS (ESI) m/e 356 (M+H)+; Anal. calcd for C2oH2~C1N30~3.1 C2HF302: C, 44.36; H, 3.57; N, 5.92. Found: C, 44.31; H, 3.60; N, 5.91.
Example 177 2-(3',6'-dih~dro-2,4'-biRyridin-1'(2'H)-y1~2,4,6-trichlorophen~lacetamide The title compound was prepared according to the method of Example 170 substituting 2,4,6-trichloroaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W. S.; et al. J. Med. Chem.
1984, 27, 1182) in place of the product from Example 36C. The purification also employed 0.1%
aqueous trifluoroacetic acid in place of aqueous ammonium acetate (10 mM). (38 mg, 0.050 mmol, 20%). 1H NMR (300 MHz, DMSO-d6) 8 2.92 (m, 2H), 3.46 (m, 1H), 3.68 (m, 1H), 4.02 (m, 1 H), 4.14 (m, 1 H), 4.42 (s, 2H), 6.72 (br s, 1 H), 7.3 5 (m, 1 H), 7.66 (br d, J=8.4 Hz, 1 H), 7.84 (m, 3H), 8.58 (m, 1H), 10.73 (br s, 1H); MS (ESI) m/e 398 (M+H)+; Anal. calcd for CiaHi6C1sN30~3.15 CZHF3O2: C, 38.61; H, 2.55; N, 5.56. Found: C, 38.65; H, 2.45; N, 5.61.
Example 178 N-,~~[4-(2-pyridin~)-1-piperazinyl]methyl l -3-(trifluoromethyl)benzamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), 3-trifluoromethylbenzamide (95 mg, 0.5 mmol), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 30 mg (55%) pure compound.

(500 MHz, DMSO-d6) ~ 2.60 (t, J=4 Hz, 4H), 3.52 (t, J=4 Hz, 4H), 4.22 (d, J=5 Hz, 1H), 6.62 (t, J=5 Hz, 1H), 6.81 (d, J=6 Hz, 1H), 7.51 (t, J=6 Hz, 1H), 7.75 (d, J=6 Hz, 1H), 7.92 (d, J=6 Hz, 1H), 8.12 (d, J=5 Hz, 1H), 8.10 (m, 2H), 9.05 (t, J=5 Hz, 1H); MS
(ESI/APCI-) m/e 363 (M-H)+.
Example 179 3,5-dimethoxy-N-f [4-(2-pyridin 1~)-1-piperazin~]methyl)benzamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), 3,5-dimethoxybenzamide (91 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% rnethanol:ethyl acetate) to give 38.5 mg (72%) pure compound. 1H NMR (500 MHz, DMSO-d6) b 2.59 (t, J=4 Hz, 4H), 3.48 (t, J=4 Hz, 4H), 3.78 (s, 6H), 4.20 (d, J=5 Hz, 1H), 6.62 (m, 2H), 6.81 (d, J=6 Hz, 1H), 7.03 (s, 2H), 7.50 (t, J=6 Hz, 1H), 8.10 (d, J=5 Hz, 1H), 8.78 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 355 (M-H)+.
Example 180 N- f~[4-(2-pyridinyl)-1-piperazinyl]meth~~ cyclohexanecarboxamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), cyclohexanecarboxylic acid amide (64 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 30 mg (66%) pure compound. IH NMR (500 MHz, DMSO-d6) 8 1.05-1.40 (m, SH), 1.59-1.68 (m, SH), 2.15 (m, 1 H), 2.48 (m, 4H), 3.45 (t, J=4 Hz, 4H), 3.95 (d, J=5 Hz, 1 H), 6.62 (t, J=6 Hz, 1 H), 6.81 (d, J=6 Hz, 1H), 7.53 (t, J=6 Hz, 1H), 8.01 (t, J=5 Hz, 1H), 8.10 (d, J=5 Hz, 1H); MS
(ESI/APCI-) m/e 301 (M-H)+.
Example 181 N-(2 6-dimeth~phenyl)-2-[4-(2-pyridinylLpiperazin~]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(2,6-dimethylphenyl)-2-chloroacetamide (39 mg, 0.20 mmol, Aldrich) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2: l, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 43.7 mg (90.9%) of the desired product. 1H
NMR (500 MHz, DMSO-d6) b 2.08 (s, 6H), 2.65 (t, J=4 Hz, 4H), 3.18 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=5 Hz, 1H), 7.08 (s, 3H), 7.52 (t, J=5 Hz, 1H), 8.10 (d, J=5 Hz, 1H), 9.23 (s, 1H); MS (ESI/APCI+) m/e 325 (M+H)+.
Exam lp a 182 N~- 4-fluorophenyl -L2-j4-(2-pyridinyl)-1-piperazinyllacetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(4-fluorophenyl)-2-chloroacetamide (38 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 45 mg (95%) of the desired product. IH
NMR (500 MHz, DMSO-d6) 8 2.60 (m, 4H), 3.18 (s, 2H), 3.58 (m, 4H), 6.63 (m, 1H), 6.83 (d, J=5 Hz, 1H), 7.14 (dd, J=8.7, 8.7 Hz, 2H), 7.55 (m, 1H), 7.66 (m, 2H), 8.18 (d, J=5 Hz, 1H), 9.80 (s, 1H); MS (ESI/APCI+) m/e 315 (M+H)+.
Example 183 N-(2 4-difluorophenvl)-2-[4-(2-pyridi~l)-1-~perazin~lacetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(2,4-difluorophenyl)-2-chloroacetamide (41 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 37.3 mg (74.8%) of the desired product. 1H
NMR (500 MHz, DMSO-d6) 8 2.52 (t, J=4 Hz, 4H), 3.23 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.08 (t, J=6 Hz, 1H), 7.38 (t, J=6 Hz, 1H), 7.53 (t, J=6 Hz, 1H), 7.92 (m, 1H), 8.12 (d, J=5 Hz, 1H), 9.60 (s, 1H); MS (ESI/APCI+) m/e (M+H)+.
Example 184 N-(2-meth~nhenylL[4-(2-pyridinyl)-1-piperazinyll acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(2-methyl-phenyl)-2-chloroacetamide (37 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours.
The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 29.3 mg (63%) of the desired product.
'H NMR
(500 MHz, DMSO-d6) S 2.23 (s, 3H), 2.62 (t, J=4 Hz, 4H), 3.20 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.05 (t, J=6 Hz, 1H), 7.10 (m, 2H), 7.58 (t, J=5 Hz, 1H), 7.78 (d, J=6 Hz, 1H), 8.12 (d, J=5 Hz, 1H), 9.40 (s, 1H); MS
(ESI/APCI+) m/e 311 (M+H)+.
Example 185 2-[4-(2-pyridin~l-1-piperazinyl]-N-(3-(trifluorometh~)phenyllacetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(3-trifluorophenyl)-2-chloroacetamide (48 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 27 mg (47%) of the desired product. IH
NMR (500 MHz, DMSO-d6) ~ 2.62 (t, J=4 Hz, 4H), 3.22 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.41 (d, J=6 Hz, 1H), 7.58 (m, 2H), 7.92 (d, J=6 Hz, 1 H), 8.12 (d, J=5 Hz, 1 H), 8.18 (s, 1 H), 10.06 (s, 1 H); MS (EST/APCI+) m/e 365 (M+H)+.
Example 186 N-(3-chlorophenylL j4-(2-pyridinyl)-1-piperazinyll acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(3-chloro-phenyl)-2-chloroacetamide (41 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours.
The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 16 mg (32%) of the desired product. 'H
NMR (500 MHz, DMSO-d6) 8 2.60 (t, J=4 Hz, 4H), 3.20 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.13 (d, J=6 Hz, 1H), 7.38 (t, J=6 Hz, 1H), 7.58 (m, 2H), 7.95 (s, 1H), 8.12 (d, J=5 Hz, 1H), 9.95 (s, 1H); MS (ESI/APCI+) m/e 331 (M+H)+.
Example 187 N-benzyl-2-[4~2-pyridinXl)-1-~perazin~]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-benzyl-2-chloroacetamide (37 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 16 mg (32%) of the desired product. 1H NMR (500 MHz, DMSO-d6) 8 2.58 (m, 4H), 3.05 (s, 2H), 3.52 (m, 4H), 4.35 (d, J=5 Hz, 2H), 6.63 (t, J=5 Hz, 1H), 6.82 (d, J=6 Hz, 1H), 7.28 (m, SH), 7.55 (t, J=6 Hz, 1H), 8.12 (t, J=5 Hz, 1H), 8.35 (s, 1 H); MS (ESI/APCI+) m/e 311 (M+H)+.
Exam lp a 188 2-[4-(2-p~dinyl~ 1-piperazin~]-N-[4-(trifluoromethoxy)phenyl]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(4-trifluoromethoxyphenyl)-2-chloroacetamide (51 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced the residue was purified by preparative HPLC to provide 16 mg (32%) of the desired product.
1H NMR (500 MHz, DMSO-db) 8 2.60 (t, J=4 Hz, 4H), 3.21 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.35 (d, J=6 Hz, 2H), 7.55 (t, J=6 Hz, 1H), 7.76 (m, 2H), 8.12 (d, J=5 Hz, 1H), 9.98 (s, 1H); MS (ESI/APCI+) m/e 381 (M+H)~.
Example 189 2-[4-(2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(2-trifluoromethylphenyl)-2-chloroacetamide (48 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 41 mg (75%) of the desired product. 1H NMR (500 MHz, DMSO-d6) 8 2.65 (t, J=4 Hz, 4H), 3.23 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.65 (t, J=5 Hz, 1 H), 6.85 (d, J=6 Hz, 1 H), 7.3 8 (t, J=6 Hz, 1 H), 7.55 (t, J=6 Hz, 1 H), 7.73 (m, 2H), 8.15 (d, J=5 Hz, 1 H), 8.22 (d, J=6 Hz, 1 H), 9.95 (s, 1 H); MS
(ESI/APCI+) m/e 365 (M+H)+.
Example 190 N-(4-chlorophenyl)-2-[4-(2-pyridiny,-1-piperazinyll acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(4-chlorophenyl)-2-chloroacetamide (41 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 42 mg (85%) of the desired product. 'H
NMR (500 MHz, DMSO-d6) 8 2.60 (t, J=4 Hz, 4H), 3.21 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1 H), 6.83 (d, J=6 Hz, 1 H), 7.3 8 (d, J=6 Hz, 2H), 7.54 (t, J=6 Hz, 1 H), 7.70 (d, J=6 Hz, 2H), 8.12 (d, J=5 Hz, 1H), 9.90 (s, 1H); MS (ESI/APCI+) m/e 331 (M+H)+.
Example 191 N-(2,3-dichlorophenylL~4~2-pyridinyl)-1-piperazinyl]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(2,3-dichlorophenyl)-2-chloroacetamide (48 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure the residue purified by preparative HPLC to provide 9 mg (16%) of the desired product as a trifluoroacetic acid salt. IH NMR (500 MHz, DMSO-d6) S 2.62 (t, J=4 Hz, 4H), 3.23 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.55 (t, J=6 Hz, 1H), 7.68 (m, 2H), 7.88 (m, 2H), 8.12 (d, J=5 Hz, 1H), 10.12 (s, 1H); MS (ESI/APCI+) m/e (M+H)+.
Example 192 N-(3 4-dichlorophenylL[4-(2-pyridinyl)-1-piperazinyl]acetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(3,4-dichlorophenyl)-2-chloroacetamide (48 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 58 mg (41%) of the desired product. 'H
NMR (500 MHz, DMSO-d6) 8 2.65 (t, J=4 Hz, 4H), 3.23 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.65 (t, J=5 Hz, 1 H), 6. 8 5 (d, J=6 Hz, 1 H), 7.41 (m, 2H), 7. 5 5 (t, J=6 Hz, 1 H), 8 .12 (d, J=5 Hz, 1H), 8.25 (d, J=6 Hz, 1H), 10.08 (s, 1H); MS (ESI/APCI+) m/e 365 (M+H)+.

Example 193 2-[4-(2-p 'i~dinyl)-1-piperazin~l-N-[4-(trifluoromethyl)phenyllacetamide A mixture of 1-pyridin-2-ylpiperazine (24 mg, 0.15 mmol, Aldrich), N-(4-trifluoromethylphenyl)-2-chloroacetamide (48 mg, 0.20 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure and the residue purified by preparative HPLC to provide 20 mg (37%) of the desired product. IH NMR (500 MHz, DMSO-d6) b 2.60 (t, J=4 Hz, 4H), 3.21 (s, 2H), 3.58 (t, J=4 Hz, 4H), 6.63 (t, J=5 Hz, 1H), 6.83 (d, J=6 Hz, 1H), 7.30 (m, 1H), 7.55 (m, 2H), 7.80 (m, 2H), 8.12 (d, J=5 Hz, 1H), 10.08 (s, 1H); MS (ESI/APCI+) m/e 365 (M+H)+.
Example 194 3-chloro-N-f [4-(2-p~yl)-1-piperazinyl]meth~)benzamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), 3-chlorobenzamide (78 mg, 0.5 mmol, Maybridge), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 26 mg (52%) pure compound. 1H NMR (500 MHz, DMSO-d6) S 2.58 (t, J=4 Hz, 4H), 3.50 (t, J=4 Hz, 4H), 4.19 (d, J=5 Hz, 1 H), 6.62 (t, J=5 Hz, 1 H), 6.81 (d, J=6 Hz, 1 H), 7. 51 (m, 2H), 7.61 (m, 1 H), 7. 82 (d, J=6 Hz, 1 H), 7.92 (s, 1 H), 8.12 (d, J=5 Hz, 1 H), 8.93 (t, J=5 Hz, 1 H); MS
(ESI/APCI-) m/e 329 (M-H)+.
Example 195 4-fluoro-3-methyl-N-f~4-(2-pyridinyl)-l~iperazinyl]'methyl)benzamide A mixture of 1-pyridin-2-ylpiperazine (16 mg, 0.1 mmol, Aldrich), paraformaldehyde (30 mg, 1 mmol), 4-fluoro-3-methylbenzamide (77 mg, 0.5 mmol, Oakwood), and 42 mg of potassium carbonate (0.3 mmol) in 2 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 25 mg (51%) pure compound. 1H NMR (500 MHz, DMSO-d6) 8 2.25 (s, 3H), 2.58 (t, J=4 Hz, 4H), 3.52 (t, J=4 Hz, 4H), 4.18 (d, J=5 Hz, 1 H), 6.61 (t, J=5 Hz, 1 H), 6. 81 (d, J=6 Hz, 1 H), 7.21 (t, J=6 Hz, 1 H), 7. 51 (t, J=5 Hz, 1 H), 7.75 (t, J=5 Hz, 1 H), 7.82 (d, J=6 Hz, 1 H), 8.12 (d, J=5 Hz, 1 H), 8.76 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 327 (M-H)+.
Example 196 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-4-fluoro-3-methylbenzamide A mixture of 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (20 rng, 0.10 mmol, Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182), paraformaldehyde (30 mg, 1 mmol), 4-fluoro-3-methylbenzamide (77 mg, 0.5 mmol, Oakwood), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight.
The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 9 mg (28%) pure compound. IH NMR (500 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.56 (m, 2H), 2.76 (m, 2H), 3.30 (m, 2H), 4.26 (d, J=5 Hz, 2H), 6.70 (m, 1H), 7.20 (m, 2H), 7.50 (d, J=6 Hz, 1H), 7.75 (m, 2H), 7.85 (d, J=6 Hz, 1H), 8.51 (m, 1H) 8.77 (t, J=5 Hz, 1H); MS (ESI/APCI-) m/e 324 (M-H)+.
Example 197 3-methyl-N-f j4-(1,3-oxazol-2-yl -3,~ydro-1(2H)-p~yl]methyl]benzamide Example 197A
tert-butyl 4-(1,3-oxazol-2-yl)-3,6-dihydro-1 (2H1-pyridinecarboxylate Oxazole (1.00 g, 14.5 mmol) in anhydrous tetrahydrofuran was treated with n butyllithium (2.5 M, 6.4 mL, 15.9 mmol) at -78 °C. Stirring continued and after 30 minutes, added zinc chloride (1M solution 43.0 mL, 43.4 mmol) and the reaction was allowed to warm to room temperature, and stirred for 1 hour. To this solution was added 4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butylester (Bursavich, M. G.; et al. Org. Lett. 2001, 3, 2317, 4.8 g, 14.5 mmol) and stirred. A palladium catalyst solution was prepared separately by treating bis(triphenylphosphine)palladium(II)chloride (5%mole) (526.4 mg, 0.75 mmol) in tetrahydrofuran at room temperature with n-butyllithium (2.5M solution 1.6 mL, 1.5 mmol).

The palladium catalyst was added to the reaction mixture containing the triflate and refluxed overnight. The reaction was cooled to room temperature, diluted with ethyl acetate, and partitioned with water. The organic phase was separated, washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure to afford thick yellow oil (1.5 g, 41%) which solidified upon standing. 1H NMR (300 MHz, CDC13) 8 1.50 (s, 9H), 2.62 (m, 2H), 3.60 (t, 2H, J=6 Hz), 4.10 (m, 2H), 6.65 (m, 1H), 7.10 (d, 1H, J=0.25 Hz), 7.60 (d, 1H, J=0.25 Hz); MS (DCI/NH3) m/e 251 (M+H)+.
Example 197B
4-(1 3-oxazol-2-yl)-1,2,3,6-tetrah~dropyridine The procedure described in Example 166B was followed, substituting the product from Example 197A for the product from Example 166A to provide the title compound as a brown oil (1.75 g, 92%). 1H NMR (300 MHz, CDC13) b 2.90 (m, 2H), 3.45 (m, 2H), 3.95 (s, 2H), 6.70 (m, 1H), 7.28 (d, 1H, J=0.25 Hz), 7.68 (d, 1H, J=0.25 Hz); MS
(DCI/NH3) m/e 151 (M+H)+.
Example 197C
3-meth~f~4-(1 3-oxazol-2-yl)-3,6-dihydro-1 (2H)-p~rridinyllmethyl~benzamide The procedure described in Example 200 was followed, substituting the product from Example 166B for the product from Example 119A to provide the title compound a as brown sticky residue (280 mg, 15%). IH NMR (300 MHz, CDCl3) S 2.40 (s, 3H), 2.68 (m, 2H), 2.87 (t, 2H, J=6 Hz), 3.40 (q, 2H, J=4.5 Hz), 4.45 (d, 2H, J=6 Hz), 6.70 (m, 1 H), 7.10 (d, 1 H, J=0.25 Hz), 7.31 (d, 2H, J=6 Hz), 7.55 (m, 2H), 7.61 (s, 1H); MS (DCI/NH3) m/e (M+H)+.
Maleate salt: Anal. calcd for C1~H19N3O2~1.O C4H4O4: C, 61.01; H, 5.61; N, 10.16; Found: C, 60.65; H, 5.46; N, 9.91.
Example 198 2-methyl-N-[(3-methyl-3' 6'-dihydro-2,4'-bipyridin-1'(2'H)-~)methyl]benzamide A mixture of the product from Example 143B (trifluoroacetic acid salt, 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 2-methylbenzamide (68 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mrnol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 12.5 mg (39%) pure compound. IH NMR (500 MHz, DMSO-d6) 8 2.32 (s, 3H), 2.37 (s, 3H), 2.48 (m, 2H), 2.80 (m, 2H), 3 .27 (m, 2H), 4.26 (d, J=5 Hz, 2H), 5. 82 (m, 1 H), 7.15 (m, 1 H), 7.24 (m, 2H), 7.3 5 (m, 2H), 7.60 (d, J=6 Hz, 1 H), 8.15 (m, 1 H), 8.3 5 (d, J=6 Hz, 1 H), 8.61 (t, J=5 Hz, 1 H); MS
(ESI/APCI-) m/e 320 (M-H)+.
Example 199 2-[~3-cyano-2-pyridinyl~-1-~iperidinyl]-N-(2,6-dimethylphenyl)acetamide The product from Example 58D (trifluoroacetic acid salt, 30 mg, 0.1 mmol), N-(2,6-dimethylphenyl)-2-chloroacetamide (23 mg, 0.15 mmol, Aldrich) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2:1, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure. The residue was purified by preparative HPLC to provide 7 mg (28%) of the desired product.
'H NMR
(500 MHz, DMSO-d6) 8 1.82 (m, 2H), 2.05 (m, 2H), 2.12 (s, 6H), 2.35 (m, 2H), 3.05 (m, 3H), 3.15 (s, 2H), 7.05 (m, 3H), 7.45 (dd, J=6 Hz, 1H), 8.25 (d, J=6 Hz, 1H), 8.79 (dd, J~6 Hz, 1H), 9.21 (s, 1H); MS (ESI/APCI+) m/e 349 (M+H)+.
Example 200 2-(1-1"[(3-methylbenzoyl~amino]~meth~)-4-piperidinyllpyridinium N-oxide 2-Piperidin-4-ylpyridinium N-oxide hydrochloride (from Example 119A) (4.16 g, 16.4 mmol) in toluene/dioxane (60 mL/6 mL) was treated with powdered potassium carbonate (2.69 g, 19.37 mmol) at room temperature and stirred for 30 minutes.
To this mixture was added 3-methylbenzamide (7.89 g, 58.4 mmol) and 37% aqueous formaldehyde (4.7 mL, 58 mmol). The reaction mixture was heated at 80 °C for 3 hours, cooled to room temperature, treated with additional portions of 3-methylbenzamide (2.63 g, 19.5 mrnol) and 37% formaldehyde (1.57 mL, 19.5 mmol). The reaction mixture was stirred at 80 °C for 1 hour, cooled, and concentrated under reduced pressure. Toluene was used to remove the water (2 x 75 mL). To the residue was added 3% methanol:dichloromethane and inorganic salts were filtered off. The filtrate was concentrated under reduced pressure.
The residue was purified by flash column chromatography using 10% methanol:dichloromethane followed by 15% methanol:dichloromethane to provide the title compound as a solid. mp 177-180°C; 1H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (m, 2H), 2.33 (m, 2H), 2.38 (s, 3H), 2.96 (m, 2H), 3.19 (m, 1H), 4.17 (d, J=6 Hz, 2H), 7.31 (m, SH), 7.69 (m, 2H), 8.23 (m, 1H), 8.71 (m, 1H); MS (DCI/NH3) mle 310 (M+H-16)+; Anal. calcd for C19H23N3~2~ C, 70.13; H, 7.12; N, 12.91. Found C, 69.94; H, 7.19; N, 12.96.
Example 201 N-(3-methylphenyl)-2-[4-(3-methyl-2-p~ylLpiperazinyl]acetamide Example 201A
1-(3-meth,-2-pyridin~r~piperazine To a slurry of 2-bromo-3-methylpyridine (3.30 mL, 29.6 mmol) in n-butanol was added piperazine (25.0 g, 290 mmol) and the reaction heated to reflux for 3 days. The mixture was cooled and the solvent removed under reduced pressure. The residue was partitioned between water and ethyl acetate. The organic phase was dried (sodium sulfate) and concentrated. The residue was purified by flash column chromatography on silica gel (elution with 15% methanol:dichloromethane) to provide the title compound as a yellow oil.
1H NMR (300 MHz, CDCl3) 8 2.28 (s, 3H), 3.01 (m, 4H), 3.11 (m, 4H), 6.84 (dd, 1H, J=7.1, 4.8 Hz), 7.39 (m, 1H), 8.16 (m, 1H); MS (DCI/NH3) m/e 178 (M+H)+.
Example 201 B
N-(3-methylphenylL[4-(3-meth~pyridinyl~piperazinyl] acetamide The procedure described in Example 33C was followed, substituting the product from Example 201A for the product from Example 33B to provide the title compound.
IH NMR
(300 MHz, DMSO-d6) b 2.23 (s, 3H), 2.28 (s, 3H), 2.68 (m, 4H), 3.13 (m, 4H), 3.18 (s, 2H), 6.90 (m, 2H), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.47 (m, 3H), 8.10 (dd, 1H, J=4.7, 1.7 Hz), 9.65 (br s, 1H); MS (DCI/NH3) m/e 325 (M+H)+; Anal. calcd for C19H2,~T40: C, 70.34;
H, 7.46;
N, 17.27. Found: C, 70.13; H, 7.36; N, 17.20.
Example 202 2_[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide 2-Chloro-N-(4-trifluoromethylphenyl)acetamide (820 mg, 3.45 mmol, Maybridge) and N,N-diisopropylamine (2.5 mL) in toluene (50 mL) were treated with 2-piperazin-1-ylnicotinonitrile (800 mg, 4.25 mmol, Chess) and heated to 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (gradient elution with 20% to 40%
ethyl acetate:hexanes) to provide 1.05 g (78% yield) of the title compound as a white solid. 'H
NMR (300 MHz, DMSO-d6) 8 2.69 (m, 4H), 3.26 (s, 2H), 3.68 (m, 4H), 6.93 (dd, 1H, J=7.5, 4.7 Hz), 7.68 (AA'BB', 2H, J=8.8 Hz), 7.88 (AA'BB', 2H, J=8.5 Hz), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=4.7, 2.0 Hz), 10.14 (br s, 1H); MS (DCI/NH3) m/e 390 (M+IT)+;
Anal. calcd for C19H18F3N50: C, 58.61; H, 4.66; N, 17.99. Found: C, 58.35; H, 4.45; N, 18.02.
Exam lp a 203 N-(2-ethyl-6-methylphen~)-2-'[4-(2-pyridine)-1-piperidinyllacetamide The title compound was prepared according to the method of Example 170 substituting 2-ethyl-6-methylaniline in place of 2,6-diethylaniline (yield:
48.5 mg, 0.144 mmol, 28%). 1H NMR (300 MHz, DMSO-d6) 6 1.08 (t, J=7.5 Hz, 3H), 1.90 (m, 4H), 2.14 (s, 3H), 2.32 (m, 2H), 2.50 (q, J=7.5 Hz, 2H), 2.68 (m, 1H), 3.04 (br d, J=11.4 Hz, 2H), 3.15 (s, 2H), 7.10 (m, 3H), 7.21 (ddd, J=1.5, 4.5, 7.5 Hz, 1H), 7.30 (d, J=8.4 Hz, 1H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.28 (m, 1H), 9.22 (br s, 1H); MS (ESI) m/e 338 (M+H)~; Anal.
calcd for CZ1HZ~N30~0.3 H2O: C, 73.56; H, 8.11; N, 12.26. Found: C, 73.46; H, 7.93; N, 12.07.
Example 204 N-(2-isoproRyl-6-methylphenyl)-2-(4-(2-p~inyl)-1-piperidinyll acetamide The title compound was prepared according to the method of Example 170 substituting 2-isopropyl-6-methylaniline in place of 2,6-diethylaniline (yield: 45.3 mg, 0.129 mmol, 25%). 1H NMR (300 MHz, DMSO-d6) 8 1.13 (d, J=7.2 Hz, 6H), 1.90 (m, 4H), 2.14 (s, 3H), 2.32 (m, 2H), 2.70 (m, 1H), 3.05 (m, 3H), 3.16 (s, 2H), 7.06 (m, 1H), 7.18 (m, 3H), 7.29 (d, J=8.4 Hz, 1H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.48 (m, 1H), 9.22 (br s, 1H); MS

(ESI) m/e 352 (M+H)+; Anal. calcd for C22H29N30~0.35 HZO: C, 73.85; H, 8.37;
N, 11.74.
Found: C, 74.04; H, 8.41; N, 11.58.
Example 205 N-(2-chloro-6-methy~henyl)-2-(4-(2-pyridin~)-1-piperidinyl] acetamide The title compound was prepared according to the method of Example 170 substituting 2-chloro-6-methylaniline in place of 2,6-diethylaniline (yield:
62.8 mg, 0.183 mmol, 36%). IH NMR (300 MHz, DMSO-d6) 8 1.88 (m, 4H), 2.20 (s, 3H), 2.30 (m, 2H), 2.68 (m, 1H), 3.12 (m, 2H), 3.17 (s, 2H), 7.21 (m, 2H), 7.29 (d, J=8.4 Hz, 1H), 7.36 (m, 1H), 7.73 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.48 (m, 1H), 9.43 (br s, 1H); MS (ESI) m/e 344 (M+H)+;
Anal. calcd for C19Hz2C1N3O~O.1 CH2C12: C, 65.11; H, 6.35; N, 11.93. Found: C, 64.83; H, 6.04; N, 11.88.
Example 206 N-(2-methoxy-6-meth~phenyl)-2-[4-(2-pyridinyl)-1-piperidinyllacetamide The title compound was prepared according to the method of Example 170 substituting 2-methoxy-6-rnethylaniline in place of 2,6-diethylaniline (yield:
38.1 mg, 0.112 mmol, 22%). 1H NMR (300 MHz, DMSO-d6) 8 1.87 (m, 4H), 2.14 (s, 3H), 2.29 (m, 2H), 2.69 (m, 1H), 3.08 (m, 4H), 3.72 (s, 3H), 6.84 (m, 2H), 7.13 (dd, J=8.4, 8.4 Hz, 1H), 7.20 (ddd, J=1.5, 4.5, 7.5 Hz, 1H), 7.31 (d, J=8.4 Hz, 1H), 7.72 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.48 (m, 1H), 8.94 (br s, 1H); MS (ESI) m/e 340 (M+H)+; Anal. calcd for C2oHa5N30~0.4 HZO: C, 69.30; H, 7.50; N, 12.12. Found: C, 69.45; H, 7.48; N, 11.82.
Example 207 2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-ethyl-6-methylphenyl)acetamide The title compound was prepared according to the method of Example 170 substituting 2-ethyl-6-methylaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride in place of the product from example 36C. (yield:
50.2 mg, 0.150 mmol, 29%). 1H NMR (300 MHz, DMSO-d6) 8 1.09 (t, J=7.5 Hz, 3H), 2.16 (s, 3H), 2.52 (m, 2H), 2.68 (m, 2H), 2.82 (t, J=5.7 Hz, 2H), 3.28 (s, 2H), 3.36 (m, 2H), 6.73 (m, 1H), 7.08 (m, 3H), 7.23 (ddd, J=1.0, 5.1, 7.5 Hz, 1H), 7.57 (d, J=7.5 Hz, 1H), 7.75 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.54 (m, 1H), 9.23 (br s, 1H); MS (ESI) m/e 336 (M+H)+; Anal.

calcd for CZIHasNsO~0.3 CHaCl2: C, 70.88; H, 7.15; N, 11.64. Found: C, 70.92;
H, 7.06; N, 11.78.
Example 208 ~3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-isopropyl-6-methylphenyl)acetamide The title compound was prepared according to the method of Example 170 substituting 2-isopropyl-6-methylaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W. S.; et al.
J. Med. Chem.
1984, 27, 1182) in place of the product from Example 36C. (yield: 37.4 mg, 0.110 mmol, 21%). 1H NMR (300 MHz, DMSO-d6) 8 1.12 (d, J=6.9 Hz, 6H), 2.15 (s, 3H), 2.67 (m, 2H), 2.82 (t, J=5.7 Hz, 2H), 3.07 (m, 1H), 3.27 (s, 2H), 3.37 (m, 2H), 6.73 (m, 1H), 7.06 (dd, J=3.0, 9.0 Hz, 1H), 7.15 (m, 2H), 7.23 (ddd, J=1.0, 5.1, 7.5 Hz, 1H), 7.56 (d, J=8.4 Hz, 1H), 7.76 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.53 (m, 1H), 9.21 (br s, 1H); MS (ESI) m/e 350 (M+H)+.
Anal, calcd for CazH~,~N30~0.3 C2H40a O.lHzO: C, 73.51; H, 7.75; N, 11.38.
Found: C, 73.42;
H, 7.67; N, 11.40.
Example 209 N-(2-chloro-6-meth~phenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'Hl-vl)acetamide The title compound was prepared according to the method of Example 170 substituting 2-chloro-6-methylaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W. S.; et al.
J. Med. Chem.
1984, 27, 1182) in place of the product from Example 36C. (yield: 49.5 mg, 0.145 mmol, 28%). iH NMR (300 MHz, DMSO-d6) 8 2.20 (s, 3H), 2.68 (m, 2H), 2.83 (t, J=5.7 Hz, 2H), 3.29 (s, 2H), 3.38 (m, 2H), 6.72 (m, 1H), 7.22 (m, 3H), 7.35 (dd, J=2.1, 7.5 Hz, 1H), 7.57 (d, J=8.4 Hz, 1H), 7.76 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.53 (m, 1H), 9.43 (br s, 1H); MS (ESI) m/e 342 (M+H)+. Anal. calcd for Cl9HaoC1N30~0.25 C2H40~: C, 65.63; H, 5.93; N, 11.78.
Found: C, 65.44; H, 5.72; N, 11.88.
Example 210 2-(~3' 6'-dihydro-2,4'-binyridin-1'(2'H~yl)-N-(2-methoxy-6-meth~phenyl acetamide The title compound was prepared according to the method of Example 170 substituting 2-methoxy-6-methylaniline in place of 2,6-diethylaniline and substituting 1',2',3',6'-tetrahydro-[2,4']bipyridinyl hydrochloride (Saari, W. S.; et al.
J. Med. Chem.
1984, 27, 1182) in place of the product from Example 36C. (yield: 50.3 mg, 0.149 mmol, 29%). IH NMR (300 MHz, DMSO-d6) 8 2.13 (s, 3H), 2.70 (m, 2H), 2.82 (t, J=5.7 Hz, 2H), 3.24 (s, 2H), 3.35 (m, 2H), 3.74 (s, 3H), 6.74 (m, 1H), 6.86 (dd, J=8.4, 13.8, 1H), 7.14 (dd, J=7.5, 7.5 Hz, 1H), 7.24 (ddd, J=1.0, 5.1, 7.5 Hz, 1H), 7.58 (d, J=8.4 Hz, 1H), 7.78 (ddd, J=2.1, 7.5, 7.5 Hz, 1H), 8.54 (m, 1H), 8.94 (br s, 1H); MS (ESI) m/e 338 (M+H)+. Anal.
calcd for C2oH23N3O~O.OS CHZC12: C, 70.48; H, 6.81; N, 12.30. Found: C, 70.40;
H, 6.67; N, 12.38.
Exa ale 211 3-chloro-N-f (3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)meth~]benzamide A mixture of the product from Example 143B (trifluoroacetic acid salt, 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 3-chlorobenzamide (78 mg, 0.5 mmol, Maybridge), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 8.6 mg (25%) pure compound. 1H NMR (500 MHz, DMSO-d6) S 2.28 (s, 3H), 2.45 (m, 2H), 2.73 (m, 2H), 3.23 (m, 2H), 4.28 (d, J=6 Hz, 2H), 5.80 (m, 1H), 7.15 (m, 1H), 7.52 (t, J=6 Hz, 1 H), 7.61 (m, 2H), 7. 86 (d, J=6 Hz, 1 H), 7.94 (m, 1 H), 8.34 (d, J=6 Hz, 1 H), 8.95 (t, J=6 Hz, 1H); MS (ESI/APCI-) m/e 340 (M-H)+.
Example 212 3-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)meth~]benzamide A mixture of the product from Example 143B (trifluoroacetic acid salt, 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 3-fluorobenzamide (70 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 24 mg (74%) pure compound. IH NMR (500 MHz, DMSO-d6) 8 2.30 (s, 3H), 2.47 (m, 2H), 2.76 (m, 2H), 3.25 (m, 2H), 4.28 (d, J=6 Hz, 2H), 5.80 (m, 1H), 7.14 (m, 1H), 7.39 (t, J=6 Hz, 1H), 7.55 (m, 2H), 7.69 (d, J=6 Hz, 1H), 7.76 (d, J=6 Hz, 1H), 8.34 (d, J=6 Hz, 1H), 8.91 (t, J=6 Hz, 1H); MS (ESI APCI-) m/e 324 (M-H)+.
Example 213 3-meth~~2S)-2-methyl-4-(2-pyridinyl~l-pi erazinyl]methyl)benzamide Example 213A
(3S -3-methyl-1-(2-p '~)~iperazine A solution of (S)-(+)-2-methylpiperazine (0.50 g, 0.005 mol, CAS 74879-18-8, Aldrich 39,717-2, 99%) and 2-bromopyridine (5 mL, 0.05 mol) was heated to 120 °C for 14 hours. The reaction mixture was cooled to 23 °C and partitioned between ethyl acetate and water. 'The layers were separated, and the water layer extracted twice more with ethyl acetate. The aqueous phase was adjusted to pH ~ 11 with a solution of saturated sodium bicarbonate and solid sodium carbonate. Sodium chloride was added, and the saturated aqueous solution was extracted with ethyl acetate (2x) and dichloromethane (2x). The combined organic extracts were dried over sodium sulfate, filtered, and concentrated under reduced pressure to afford 0.6 g (67% yield) of the title compound. 1H NMR
(400 MHz;
DMSO-db) 8 1.02 (d, J=6.0 Hz, 3H), 2.27 (dd, J=12, 10 Hz, 1H), 2.67 (m, 3H), 2.92 (m, 1H), 4.07 (m, 2H), 6. 5 8 (dd, J=8, 6 Hz, 1 H), 6.77 (d, J=8 Hz, 1 H), 7.49 (m, 1 H), 8.08 (m, 1 H); MS
(ESI) m/e 178 (M+H)+.
Example 213B
3-meth [(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]meth~lbenzamide A solution of the product from Example 213A (250 mg, 1.40 mmol), the product from Example 91A (291 mg, 1.40 mmol) and triethylamine (354 mg, 3.50 mmol) in acetoniti-ile , (10 mL) was stirred at 23 °C for 72 hours. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate solution was then washed with additional water, a solution of saturated sodium bicarbonate, and brine. The organic phase was dried over sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (2-5% ethanol:ethyl acetate) to afford 396 mg (87% yield) of the title compound. 1H NMR (300 MHz, DMSO-db) 8 1.21 (d, J=5.4 Hz, 3H), 2.34 (s, 3H), 2.50 (m, 3H), 2.85 (m, 2H), 4.06 (br d, J=10.5 Hz, 2H), 4.29 (dd, J=13.5, 6.0 Hz, 1H), 4.43 (dd, J=13.5, 6.0 Hz, 1H), 6.58 (m, 1H), 6.82 (d, J=8.7 Hz, 1H), 7.34 (m, 2H), 7.48 (m, 1H), 7.63 (m, 2H), 8.07 (m, 1H), 8.54 (dd, J=6.0, 6.0 Hz, 1H); MS (ESI) m/e 325 (M+H)+; Anal. calcd for C19H24N40: C, 70.34; H, 7.46; N, 17.27. Found:
C, 70.07;
H, 7.55; N, 17.03.
Example 214 N-(3-methylphenyl)-2-[(2S)-2-meth 1-~4-_(2-pyridinyl)-1-piperazinyl]acetamide A solution of the product from Example 213A (100 mg, 0.562 mmol), the product from Example lA (128 mg, 0.562 mmol) and N,N-diisopropylethylamine (109 mg, 0.843 mmol) in toluene (5 mL) was heated at 60 °C for 16 hours and then cooled to 23 °C. The reaction mixture was concentrated under reduced pressure, and the residue purified by flash column chromatography on silica gel (elution with ethyl acetate) to afford 125 mg (68%
yield) of the title compound. 'H NMR (300 MHz, DMS~-d6) 8 1.06 (d, J=6.3 Hz, 3H), 2.27 (s, 3H), 2.58 (m, 2H), 2.80 (dd, J=12.3, 9.0 Hz, 1H), 2.84 (m, 1H), 3.10 (d, J=16.5 Hz, 1H), 3 .11 (m, 1 H), 3 . 3 8 (d, J=16. 5 Hz, 1 H), 4.00 (m, 2H), 6.63 (dd, J=8.1, 6.3 Hz, 1 H), 6. 84 (d, J=11.1 Hz, 1 H), 6.89 (m, 1 H), 7.18 (m, 1 H), 7.44 (m, 2H), 7.52 (m, 1 H), 8.10 (m, 1 H), 9.63 (br s, 1H); MS (ESI) m/e 325 (M+H)+; Anal. calcd for C19H2qN4O: C, 70.34; H, 7.46; N, 17.27. Found: C, 70.25; H, 7.62; N, 17.29.
Example 215 3-methyl-N-~[(2R -2-methyl-4-(~yridinylL~iperazin~]'meth~)benzamide Example 215A
(3R)-3-methyl-1-(2-pyridinyl)piperazine A solution of (R)-(-)-2-methylpiperazine (0.50 g, 0.005 mol, CAS 75336-86-6, Aldrich 39,716-4, 99%) and 2-bromopyridine (5 mL, 0.05 mol) was heated to 120 °C for 14 hours. The reaction mixture was cooled to 23 °C and partitioned between a large volume of ethyl acetate and water. The layers were separated, and then additional water was added to the ethyl acetate solution. Drops of 1N Hydrochloric acid solution were added to the water/ethyl acetate mixture with vigorous mixing until all of the product was transferred to the aqueous phase. The layers were separated, and the combined aqueous phases concentrated under reduced pressure, and azeotroped with toluene/methanol (Sx) to afford 1.29 g (>99% yield) of 3-(R)-methyl-1-pyridin-2-yl-piperazine hydrobromide. 1H
NMR (300 MHz, DMSO-d6) 8 1.27 (d, J=6.6 Hz, 3H), 2.90 (dd, J=10.5, 14.1 Hz, 1H), 3.10 (m, 2H), 3.40 (m, 2H), 4.32 (m, 2H), 6.77 (dd, J=4.8, 6.9 Hz, 1 H), 6.98 (d, J=8.1 Hz, 1 H), 7.64 (m, 1 H), 8.15 (m, 1H), 8.63 (br s, 1H), 8.92 (br s, 1H); MS (ESI) m/e 178 (M+H)+.
Example 215B
3-meth~~~2R1-2-methyl'4-(2-pyridine)-1-piperazinyl]methyl} benzamide A solution of the product from Example 215A (250 mg, 0.97 mmol), the product from Example 91A (201 mg, 0.97 mmol) and triethylamine (342 mg, 3.39 mmol) in acetonitrile (10 mL) was stirred at 23 °C for 72 hours. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate solution was then washed with additional water, a solution of saturated sodium bicarbonate and brine. The organic phase was dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (2-5% ethanol:ethyl acetate) to afford 245 mg (78% yield) of the title compound. 'H NMR (300 MHz, DMSO-d6) 8 1.21 (d, J=5.4 Hz, 3H), 2.34 (s, 3H), 2.50 (m, 3H), 2.85 (m, 2H), 4.06 (br d, J=10.5 Hz, 2H), 4.29 (dd, J=13.5, 6.0 Hz, 1H), 4.43 (dd, J=13.5, 6.0 Hz, 1H), 6.58 (m, 1H), 6.82 (d, J=8.7 Hz, 1H), 7.34 (m, 2H), 7.48 (m, 1H), 7.63 (m, 2H), 8.07 (m, 1H), 8.54 (dd, J=6.0, 6.0 Hz, 1H); MS (ESI) m/e 325 (M+H)+; Anal. calcd for C~9H24N40: C, 70.34; H, 7.46; N, 17.27. Found:
C, 70.61;
H, 7.41; N, 16.95.
Example 216 N-(3-meth~lphen~l-2-[(2R -2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide A solution of the product from 215A (250 mg, 0.97 mmol), the product from Example lA (221 mg, 0.97 mmol) and N,N-diisopropylethylamine (313 mg, 2.42 mmol) in toluene (8 mL) was heated at 60 °C for 16 hours and then cooled to 23 °C.
The reaction mixture was concentrated under reduced pressure, and the residue purified by flash column chromatography on silica gel (elution with ethyl acetate) to afford 261 mg (83% yield) of the title compound. 1H NMR (300 MHz, DMSO-d6) 8 1.06 (d, J=6.3 Hz, 3H), 2.27 (s, 3H), 2.58 (m, 2H), 2.80 (dd, J=12.3, 9.0 Hz, 1H), 2.84 (m, 1H), 3.10 (d, J=16.5 Hz, 1H), 3.11 (m, 1H), 3.38 (d, J=16.5 Hz, 1H), 4.00 (m, 2H), 6.63 (dd, J=8.1, 6.3 Hz, 1H), 6.84 (d, J=11.1 Hz, 1H), 6. 89 (m, 1 H), 7.18 (m, 1 H), 7.44 (m, 2H), 7.52 (m, 1 H), 8.10 (m, 1 H), 9.63 (br s, 1 H); MS

(ESI) m/e 325 (M+H)+; Anal. calcd for C19H24N4O~O.3 H2O: C, 69.19; H, 7.52; N, 16.99.
Found: C, 69.09; H, 7.42; N, 16.92.
Example 217 3-methoxy-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1' 2'H)-~)methyl]benzamide A mixture of the product from Example 143B (trifluoroacetic acid salt, 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 3-methoxybenzamide (76 mg, 0.5 mmol, Lancaster), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure under reduced pressure. The residue was purified by flash column chromatography on silica gel (10%
methanol:ethyl acetate) to give 25 mg (75%) pure compound. IH NMR (500 MHz, DMSO-d6) 8 2.30 (s, 3H), 2.47 (m, 2H), 2.76 (m, 2H), 3.25 (m, 2H), 3.79 (s, 3H), 4.27 (d, J=6 Hz, 2H), 5.80 (m, 1 H), 7.11 (d, J=6 Hz, 1 H), 7.14 (t, J=6 Hz, 1 H), 7.3 8 (t, J=6 Hz, 1 H), 7.45 (s, 1 H), 7.49 (d, J=6 Hz, 1H), 7.59 (d, J=6 Hz, 1H), 8.34 (d, J=6 Hz, 1H), 8.81 (t, J=6 Hz, 1H);
MS (ESI
APCI-) m/e 336 (M-H)+.
Example 218 4-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)meth~]benzamide .
A mixture of the product from Example 143B (trifluoroacetic acid salt, 29 mg, 0.1 mmol), paraformaldehyde (30 mg, 1 mmol), 4-fluorobenzamide (70 mg, 0.5 mmol, Aldrich), and 42 mg of potassium carbonate (0.3 mmol) in 2.5 mL absolute ethyl alcohol was heated to reflux under nitrogen overnight. The mixture was cooled to room temperature, filtered, and the solvent was removed under reduced pressure under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% methanol:ethyl acetate) to give 30 mg (94%) pure compound. 'H NMR (500 MHz, DMSO-d6) 8 2.30 (s, 3H), 2.46 (m, 2H), 2.77 (m, 2H), 3.24 (m, 2H), 4.28 (d, J=5 Hz, 2H), 5.80 (m, 1H), 7.14 (t, J=5 Hz, 1H), 7.30 (t, J=6 Hz, 2H), 7.58 (d, J=5 Hz, 1H), 7.98 (t, J=6 Hz, 2H), 8.34 (d, J=5 Hz, 1H), 8.85 (t, J=5 Hz, 1H); MS (ESI APCI-) m/e 324 (M-H)+.
Exam lp a 219 2-(3-chloro-3' 6'-dihydro-2 4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide Example 219A
tert-butyl 4-(3-chloro-2-pyridinyl -L d~~p~eridinecarboxylate To a solution of 1,4-diazabicyclo[2.2.2]octane (DABCO, 680 mg, 6.06 mmol) in diethyl ether (20 mL) at -78 °C was added n-butyllithium (2.SM in hexanes, 3.0 mL) and stirring continued for 20 minutes. To this mixture was added 3-chloropyridine (700 mg, 6.16 mmol) as a solution in diethyl ether (5 mL). After 30 minutes, tert-butyl 4-oxo-1-piperidinecarboxylate (1.3o g, 6.52 mmol) was added as a solution in diethyl ether (1 mL).
The reaction mixture was stirred at -78 °C for 2.5 hours then warmed to -50 °C and quenched with water. The mixture was allowed to warm to room temperature overnight. The layers were separated and the organic phase dried, filtered and concentrated under reduced pressure.
The residue was purified by flash column chromatography on silica gel (gradient elution with 20% to 99% ethyl acetate:hexanes) to provide the title compound (110 mg, 9%
yield). 1H
NMR (500 MHz, CDC13) 8 1.38 (br d, 2H, J=13.7 Hz), 1.50 (s, 9H), 2.73 (ddd, 2H, J=13.1, 13.1, 5.3 Hz), 3.31 (br m, 2H), 4.09 (br m, 2H), 7.25 (m, 1H), 7.74 (dd, 1H, J=7.8, 1.3 Hz), 8.46 (dd, 1H, J=4.7, 1.6 Hz).
Example 219B
tent-butyl 3-chloro-3'.6'-dihydro-2,4'-bipyridine-1'(2'H)-carbox The procedure described in Example 237B was followed, substituting the product from Example 219A for the product from Example 237A to provide the title compound (42 mg, 50%). 1H NMR (500 MHz, DMSO-d6) S 1.44 (s, 9H), 2.47 (m, 2H), 3.54 (m, 2H), 4.02 (m, 2H), 6.14 (br s, 1H), 7.33 (dd, 1H, J=8.1, 4.7 Hz), 7.93 (ddd, 1H, J= 8.1, 1.6 Hz), 8.51 (dd, 1H, J=4.5, 1.4 Hz); MS (DCI/NH3) m/e 295 (M+H)+.
Example 219C
3-chloro-1',2',3',6'-tetrahydro-2,4'-bip '~ndine The procedure described in Example 166B was followed, substituting the product from Example 219B for the product from Example 166A to provide the title compound. MS
(DCM3) m/e 195 (M+H)+.
Example 219D

2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'Hwl)-N-(2 6-dimethylphenyl)acetamide A mixture of the product from Example 219C (30 mg, 0.1 mmol), N-(2,6-dimethylphenyl)-2-chloroacetamide (23 mg, 0.15 mmol, Aldrich) and sodium carbonate (50 mg) in N,N-dimethylformamide/water (2: l, 2 mL) was shaken at room temperature for 18 hours. The resulting mixture was decanted, concentrated under reduced pressure. The residue was purified by preparative HPLC to provide 20 mg (59%) of the desired product. 1H NMR
(500 MHz, DMSO-d6) 8 2.18 (s, 6H), 2.49 (m, 2H), 2.85 (m, 2H), 4.38 (m, 2H), 6.25 (s, 1H), 7.09 (m, 3H), 7.40 (dd, J=6 Hz, 1 H), 8.00 (d, J=6 Hz, 1 H), 8.56 (dd, J=6 Hz, 1 H), 10.00 (s, 1H); MS (ESI APCI+) m/e 356 (M+H)+.
Example 220 2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-~)-N~- 2-meth~phenyl)acetamide A mixture of the product from Example 219C (30 mg, 0.1 mmol), N-(2-methyl-phenyl)-2-chloroacetamide (21 mg, 0.15 mmol, Maybridge) and sodium carbonate (50 mg) in N,N-dimethylformarnide/water (2:1, 2 mL) was shaken at room temperature for 18 hours.
The resulting mixture was decanted, concentrated under reduced pressure. The residue was purified by preparative HPLC to provide 21 mg (64%) of the desired product. 1H
NMR (500 MHz, DMSO-d6) 8 2.24 (s, 3H), 2.75-2.85 (m, 2H), 2.86 (m, 2H), 3.05 (m, 2H), 4.32 (m, 2H), 6.25 (s, 1H), 7.00-7.25 (m, 3H), 7.45 (m, 2H), 8.00 (d, J=6 Hz, 1H), 8.55 (dd, J=6 Hz, 1H), 10.00 (s, 1H); MS (ESI APCI+) m/e 342 (M+H)+.
Example 221 N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)- ly methyl)-1-naphthamide The procedure described in Example 115 was followed, substituting napthalene-1-carboxarnide for 3-methoxybenzamide to provide the title compound (28% yield).
This compound (164 mg) in ethanol was treated with malefic acid (55.5 mg), stirred for 10 minutes then concentrated under reduced pressure to give yellowish sticky solid which was dissolved in dichloromethane, and the compound was precipitated using diethyl ether, filtered and then washed with diethyl ether, dried to give the maleate salt (144 mg). 1H NMR
(300 MHz, DMSO-d6) 8 2.86 (m, 2H), 3.4 (m, 2H), 3.91 (m, 2H), 4.57 (m, 2H), 6.12 (s, 2H), 6.76 (m, 1 H), 7.32 (m, 1 H), 7.61 (m, 4H), 7.80 (m, 2H), 8.02 (m, 1 H), 8.10 (d, J=9 Hz, 1 H), 8.28 (m, 1H), 8.58 (m, 1H), 9.55 (m, 1H); MS (DCI/NH3) m/e 324 (M+H)+; Anal. calcd for C22H21N30'1.2 C4H4O4: C, 66.68; H, 5.39; N, 8.70. Found; C, 66.38; H, 5.43; N, 8.75.
Example 222 N-f~[4-(3-cyano-2-pyridinyll-1-piperazinyl]methyl~-3-fluorobenzamide The procedure described in Example 200 was followed, substituting 2-piperazin-ylnicotinonitrile for the product in Example 119A and 3-fluorobenzamide for 3-methylbenzamide to provide the title compound (80% yield). 1H NMR (300 MHz, DMSO-d6) 8 2.66 (m, 4H), 3.59 (m, 4H), 4.22 (d, J=6.1 Hz, 2H), 6.91 (dd, J=7.6, 4.9 Hz, 1H), 7.39 (tdd, J=8.5, 8.5, 2.6, 1.0 Hz, 1H), 7.53 (td, J=8.0, 5.8 Hz, 1H), 7.68 (ddd, J=10.0, 2.5, 1.4 Hz, 2H), 7.74 (dt, J=7.7, 1.2 Hz, 1H), 8.39 (dd, J=4.9, 1.9 Hz, 1H), 8.91 (t, J=6.1 Hz, 1H); MS
(DCI/NH3) mle 340 (M+H)+; Anal. calcd for C18H1gN50F: C, 63.70; H, 5.35; N, 20.60.
Found: C, 63.54; H, 5.22; N, 20.47.
Example 224 3-methyl-N-1,j4-(1,3-thiazol-2-ylLpiperidinyl]'meth~~benzamide The product from Example 166C (490 mg) was hydrogenated with 10% Pd/C catalyst under hydrogen gas pressure (60 psi) for 42 hours in methanol. The mixture was filtered and concentrated under reduced pressure. 'The residue was purified by flash column chromatography on silica gel (5% ethanol:ethyl acetate) to provide the title compound (100 mg, 22%). 1H NMR (300 MHz, CDC13) & 1.85 (dq, 2H, J=12, 6 Hz), 2.20 (m, 2H), 2.40 (s, 3H), 2.48 (m, 2H), 3.10 (m, 3H), 4.35 (d, 2H, J=6 Hz), 6.50 (m, 1H), 7.20 (d, 1H, J=3.3 Hz), 7.35 (m, 2H), 7.60 (m, 2H), 7.70 (d, 1H, J=3.3 Hz); MS (DCI/NH3) m/e 316 (M+H)+.
Maleate salt: Anal. calcd for C1~H~,1N3OS~1.2 C41i4O4: C, 57.11; H, 5.85; N, 9.48. Found: C, 57.48; H, 5.33; N, 9.52.
Example 225 2-(1-~2-[(4-fluoro-2-methylphenyl)amino]-2-oxoethyl~-4-piperidinyl)pyridinium N-oxide Example 225A
2-bromo-N~4-fluoro-2-meth~phenyllacetamide The procedure described in Example lA was followed, substituting 4-fluoro-2 methylphenylamine for 3-methylaniline to provide the title compound as a pink solid. 'H
NMR (300 MHz, DMSO-d6) 8 2.20 (s, 3H), 4.06 (s, 2H), 7.01 (ddd, 1H, J=8.8, 8.8, 3.0 Hz), 7.10 (dd, 1H, J=9.5, 3.0 Hz), 7.34 (dd, 1H, J=8.8, 5.4 Hz), 9.74 (br s, 1H);
MS (DCI/NH3) m/e 246/248 (M+H)+; 263/265 (M+NH4)+.
Example 225B
2-(1-~2-[(4-fluoro-2-methylphen~ amino]-2-oxoeth~~-4-piperidinyl)pyridinium N-oxide A mixture of the product from Example 225A (0.64 g, 2.6 mmol), the product from Example 119A (0.63 g, 2.5 mmol) and K2C03 (720 mg, 5.2 mrnol) in N,N-dimethylformamide (12 mL) was heated at 40°C for overnight. The reaction mixture was cooled and the solvent removed under reduced pressure. The residue was partitioned between brine and ethyl acetate. The aqueous layer was extracted with ethyl acetate (3 x 200mL). The combined organics were dried over magnesium sulfate and concentrated. The residue was purified by flash column chromatography on silica gel using 4%
methanol:dichloromethane to give the desired product as a ofF white solid.
(649 mg, 76%).
1H NMR (300 MHz, DMSO-d6) 8 1.68 (m, 2H), 1.92 (d, J=5.8 Hz, 2H), 2.24 (s, 3H), 2.36 (m, 2H), 3.04 (d, J=11.5 Hz, 2H), 3.17 (s, 2H), 3.29 (m, 2H), 7.03 (m, 1H), 7.11 (dd, J=9.7, 2.9 Hz, 1H), 7.35 (m, 2H), 7.67 (dd, J=8.8, 5.8 Hz, 1H), 8.26 (m, 1H), 9.40 (s, 1H); MS
(DCI/NH3) m/e 328 (M+H-16)+; 344 (M+H)+.
Maleate salt (856 mg): Anal. calcd for C19HZZN3OZF~1.O C4H4O4~0.75 H2O: C, 58.41; H, 5.86; N, 8.88. Found: C, 58.02; H, 5.83; N, 8.67.
Example 226 2-(1-(2-[(4-fluoro-3-methylphenyl)amino]-2-oxoethyl~-4-piperidi~l)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 27A for the product from Example 225A to provide the title compound. (139 mg, 57%). 1H NMR (300 MHz, DMSO-d6) 8 1.68 (m, 2H), 1.92 (d, J=5.8 Hz, 2H), 2.22 (s, 3H), 2.46 (m, 2H), 3.04 (m, 2H), 3.25 (s, 3H), 7.03 (t, J=6, 1H), 7.35 (m, 2H), 7.44 (dd, J=4.5, 1.5 Hz, 1H), 7.48 (m, 1H), 7.54 (dd, J=4.5, 1.5 Hz, 1H), 8.26 (d, J=4.5, 1H), 9.79 (s, 1H); MS (DCI/NH3) m/e 328 (M+H-16)+; 344 (M+H)+:

Maleate salt (171 mg): Anal. calcd for C19HZZN30zF~1.0 C4H404: C, 60.12; H, 5.12; N, 9.15.
Found: C, 59.91; H, 5.79; N, 9.05.
Example 227 2~- 1-f2-f(3-fluorophenyl~amino]-2-oxoethyl~-4-pineridinyl)pYridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 254A for the product from Example 225A to provide the title compound. (157 mg, 68%). IH NMR (300 MHz, DMSO-d6) 8 1.68 (m, 2H), 1.92 (d, J=5.8 Hz, 2H), 2.30 (m, 2H), 3.01 (m, 2H), 3.19 (s, 2H), 3.25 (m, 1H), 6.89 (m, 1H), 7.35 (m, 3H), 7.42 (m, 2H), 7.68 (m, 1H), 8.26 (d, J=4.5, 1H), 9.91 (s, 1H); MS (DCI/NH3) mle 330 (M+H)+.
Maleate salt (190 mg): Anal. calcd for ClBHZON302F~1.0 C4H404~0.2 H20: C, 58.84; H, 5.48;
N, 9.36. Found: C, 58.52; H, 5.45; N, 9.04.
674532 Example 228 2-( 1- f 2-[(2-fluoro-5-meth~lphe girl)amino]-2-oxoethyl~-4-piperidinyl)pyridinium N-oxide Example 228A
2-chloro-N-(2-fluoro-5-methylphenyl)acetamide The procedure described in Example 22A was followed, substituting 2-fluoro-5-methylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (83% yield) as a white solid. 'H NMR (400 MHz, DMSO-d6) b 2.28 (s, 3H), 4.34 (s, 2H), 6.98 (m, 1H), 7.14 (dd, 1H, J=11.1, 8.6 Hz), 7.69 (d, 1H, J=7.4 Hz), 9.99 (br s, 1H); MS
(DCI/NH3) m/e 202 (M+H)+; 219 (M+NH4)+.
Example 228B
2-(1-f2-[(2-fluoro-5-meth l~phenvl amino]-2-oxoethyl~piperidinyl)pyridiniumN-oxide The procedure described in Example 225B was followed, substituting the product from Example 228A for the product from Example 225A to provide the title compound. (88 mg, 36.6%). 1H NMR (300 MHz, DMSO-db) & 1.63 (m, 2H), 1.95 (d, J=12 Hz, 2H), 2.27 (s, 3H), 3.50 (m, 2H), 3.01 (d, J=12 Hz, 2H), 3.20 (s, 2H), 3.30 (m, 1H), 6.93 (m, 1H), 7.15 (dd, J=9, 3 Hz, 1 H), 7.31 (m, 2H), 7.42 (m, 1 H), 7. 84 (m, 1 H), 8.26 (m, 1 H), 9. 59 (s, 1 H); MS
(DCI/NH3) mle 328 (M+H-16)+; 344 (M+H)+.

Maleate salt (190 mg): Anal. calcd for Cl9HZaN3OzF~1.0 C4H404~0.2 H20: C, 58.84; H, 5.48;
N, 9.36. Found: C, 58.52; H, 5.45; N, 9.04.
Exam lp a 229 2-( 1- ~ 1-methyl-2-((3-methylphenyl)aminol-2-oxoethyl ~ 4-piperidinvl)pyridinium N-oxide Example 229A
2-bromo-N-(3-methv~hen~)~ropanamide The procedure described in Example lA was followed, substituting 2-bromopropionyl chloride for bromoacetyl chloride to provide the title compound (92% yield) as a white solid.
1H NMR (300 MHz, DMSO-d6) 8 1.74 (d, 3H, J=6.8 Hz), 2.28 (s, 3H), 4.69 (q, 1H, J=6.8 Hz), 6.90 (d, 1H, J=7.5 Hz), 7.20 (dd, 1H, J=7.8, 7.8 Hz), 7.37 (br d, 1H, J=8.5 Hz), 7.44 (br s, 1H), 10.22 (br s, 1H); MS (DCI/NH3) xn/e 242/244 (M+H)+; 259/261 (M+NH4)''-.
Example 229B
2-(1-f 1-methyl-2-[(3-meth,~lphen~)amino]-2-oxoethyl)-4-piperidinyl)nyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 229A for the product from Example 225A to provide the title compound. (153 mg, 64.6%). IH NMR (300 MHz, DMSO-d6) 8 1.20 (d, J=6 Hz, 2H), 1.41 (d, J=6 Hz, 1H), 1.65 (m, 2H), 1.91 (m, 2H), 2.28 (s, 3H), 2.29 (m, 1H), 2.45 (m, 1H), 3.30 (m, 3H), 6.88 (d, J=7.5 Hz, 1 H), 7.19 (t, J=7.5 Hz, 1 H), 7.31 (m, 2H), 7.45 (m, 3H), 8.24 (m, 1 H), 9.68 (s, 1 H), 9.94 (s, 1H); MS (DCI/NH3) m/e 324 (M+H-16)+; 340 (M+H)+.
Maleate salt (187 mg): Anal. calcd for C2oH25N3O2~1.O C4H4O4~1.2 HZO:C, 60.42;
H, 6.63; N, 8.81. Found: C, 60.41; H, 6.38; N, 8.01.
Example 230 2-(1- 2-((4-fluorophenyl)amino]-2-oxoethyll-4-piperidinyl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting N-chloroacetyl-4-fluoroaniline (Avacado) for the product from Example 225A to provide the title compound (45°!° yield). 1H NMR (300 MHz, DMSO-d6) b 1.68 (m, 2H), 1.92 (d, J=5.8 Hz, 2H), 2.30 (m, 2H), 3.01 (m, 2H), 3.19 (s, 2H), 3.25 (m, 1H), 6.89 (m, 1H), 7.35 (m, 3H), 7.42 (m, 2H), 7.68 (m, 1H), 8.26 (d, J=4.5, 1H), 9.91 (s, 1H); MS (DCI/NH3) m/e 314 (M+H-16)+; 330 (M+H)+. Maleate salt (190 mg): Anal. calcd for CI$H2oN302F~1.0 C4H404~1.1 H20: C, 57.88; H, 5.53; N, 8.80. Found: C, 57.49; H, 5.56; N, 8.72.
Example 231 2-(1-(2-[(2-fluorophen~)amino]-2-oxoethyl~-4-piperidinyl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 28A for the product from Example 225A to provide the title compound. (126 mg, 54%). 'H NMR (300 MHz, DMSO-db) 8 1.68 (m, 2H), 1.92 (d, J=6 Hz, 2H), 2.30 (m, 2H), 3.01 (m, 2H), 3.19 (s, 2H), 3.25 (m, 1H), 7.15 (m, 1H), 7.30 (m, 3H), 7.42 (m, 2H), 7.68 (m, 1 H), 8.26 (d, J=4.5, 1 H), 9.81 (s, 1 H); MS (DCI/NH3) m/e 314 (M+H-16)+; 330 (M+H)+.
Maleate salt (190 mg): Anal. calcd for C18H2oN302F~1.0 C4H404~0.2 H20: C, 58.84; H, 5.48;
N, 9.36. Found: C, 59.04; H, 5.60; N, 9.20. ' Example 232 N-(3-methylphen~)-2- f 4-[3-(trifluorometh~)-2-pyridin~]-1-piperazinyl }
acetamide Example 232A
1 ~3-(trifluoromethyl)-2-pyridinyl]pi erazine A solution of 2-chloro-3-trifluoromethylpyridine (6.57 g, 36.2 mmol) and piperazine (31.48 g, 365.5 mmol) in n-butanol was heated to 115 °C. After 48 hours, the mixture was cooled to room temperature, the solvent removed under reduced pressure and the residue partitioned between water and ethyl acetate. The organic phase was dried (sodium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 15% rnethanol:dichloromethane) to provide 3.35 g (40% yield) of the title compound as a tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.80 (m, 4H), 3.10 (m, 4H), 7.15 (ddd, 1H, J=7.8, 4.7, 1.0 Hz), 8.03 (dd, 1H, J=7.8, 1.7 Hz), 8.50 (ddd, 1H, J=4.8, 2.0, 0.7 Hz); MS (DCI/NH3) m/e 232 (M+H)+..
Example 232B
N-(3-methyl~henyl)-~4-[3-(trifluoromethyll-2-pyridinyl]-1-piperazinyl]acetamide The product from Example 33A (1.30 mg, 7.08 mmol) and N,N-diisopropylamine (5.0 mL) in toluene (50 mL) were treated with the product from Example 232A
(2.00 mg, 8.65 mmol) and heated to 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (gradient elution with 25% to 50% ethyl acetate:hexanes) to provide of the title compound as a white solid. 1H NMR (300 MHz, DMSO-d6) b 2.28 (s, 3H), 2.67 (m, 4H), 3.18 (s, 2H), 3.27 (m, 4H), 6.88 (br d, 1H, J=8.1 Hz), 7.18 (m, 2H), 7.45 (m, 2H), 8.06 (dd, 1H, J=7.8, 2.0 Hz), 8.53 (m, 1H), 9.65 (br s, 1H); MS
(DCI/NH~) m/e 379 (M+H)+.
Maleate salt 2.45 g, 70% yield): white solid; IH NMR (300 MHz, CD3OD) 8 2.33 (s, 3H), 3.50 (m, 8H), 4.06 (s, 2H), 6.26 (s, 2H), 6.97 (br d, 1H, J=8.1 Hz), 7.21 (dd, 1H, J=7.8, 7.8 Hz), 7.29 (ddd, 1H, J=7.8, 5.1, 1.0 Hz), 7.40 (m, 2H), 8.09 (dd, 1H, J=7.8, 1.4 Hz), 8.57 (ddd, 1H, J=4.8, 2.0, 0.7 Hz); Anal. calcd for C19H21F3Na0~1.O C4H4O4: C, 55.87; H, 5.10; N, 11.33. Found: C, 55.55; H, 5.00; N, 10.99.
Exam lp a 233 N-(3-methylphen~)-2-f4-(1,3-thiazol-2-yl -3,6-dihydropyridin-1(2HLyl]acetamide The procedure described in Example 33C was followed, substituting the product from Example 166B for the product from Example 33B to provide the title compound as a yellow sticky residue (450 mg, 62%). 'H NMR (300 MHz, CDC13) S 2.3 (s, 3H), 3.8 (m, 2H), 2.9 (m, 2H), 3.31 (s, 2H), 3.4 (m, 2H), 6.6 (m, 1 H), 6.9 (m, 1 H), 7.2 (m, 1 H), 7.25 (d, 1 H, J=3 Hz), 7.4 (m, 2H), 7.8 (d, 1 H, J=3 Hz), 9.15 (br s, 1 H); MS (DCI/NH3) m/e 314 (M+H)+.
Maleate salt: Anal. calcd for C1~H19N30S~1.0 C~04: C, 58.73; H, 5.40; N, 9.78.
Found: C, 58.69; H, 5.49; N, 9.44.
Example 234 N-(3-methylnhenyll-2-(4-thien-2-yl-3,6-dihydropyridin-1 (2H)-yl)acetamide Example 234A
tert-butyl 4-hydrox~4-thien-2-ylpiperidine-1-carboxylate 2-Thienyllithium (27.6 mL, 27.6 nunol) in tetrahydrofuran (30 mL) was treated slowly with 4-oxo-piperidinel-carboxylic acid tert-butylester (5.0 g, 25 mmol) in 15 mL
tetrahydrofuran) at -78 °C. The mixture was warmed to room temperature and stirred for 3.5 hours. The reaction was quenched by pouring over ice, extracted with ethyl acetate, dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford greenish oil (5.68 g, 81%) which solidified upon standing. 1H NMR (300 MHz, DMSO-d6) 8 1.4 (s, 9H), 1.8 (m, 4H), 3.10 (br s, 2H), 3.8 (m, 2H), 5.5 (s, 1 H), 6.9 (m, 2H), 7.3 8 (dd, 1 H, J=6, 3 Hz); MS (DCIlNH3) m/e 284 (M+H)+.
Example 234B
4-thien-2-yl-1,2,3,6-tetrahydropyridine The product from Example 234A (3g, 10.59 mmol) was treated with 99% formic acid (7 mL) and stirred at room temperature overnight. The mixture was quenched saturated sodium bicarbonate (pH 8.5-9), extracted with ethyl acetate, dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford reddish oil (700 mg, 40%). IH
NMR (300 MHz, CDCl3) 8 2.45 (m, 2H), 3.10 (t, 2H, J=6 Hz), 2.45 (m, 2H), 6.18 (m, 1H), 6.95 (d, 2H, J=3 Hz), 7.18 (t, 1H, J=3 Hz); MS (DCI/NH3) m/e 166 (M+H)+.
Example 234C
N-(3-methylphen~l-2-(4-thien-2-vl-3,6-dih~dropyridin-1 (2HZyllacetamide The procedure described in Example 33C was followed, substituting the product from Example 234B for the product from Example 33B to provide the title compound as a yellow solid (220 mg, 50%). 1H NMR (300 MHz, DMSO-d6) 8 2.10 (s, 3H), 2.45 (m, 2H), 2.75 (t, 2H, J=6 Hz), 3 .2 (m, 4H), 6.1 (m, 1 H), 6.9 (d, 1 H, J=9 Hz), 7.0 (dd, 1 H, J=6, 4. 5 Hz), 7.05 (dd, 1H, J=3, 0.75 Hz), 7.18 (t, 1H, J=7.5 Hz), 7.40 (dd, 1H, J=3, 0.75 Hz), 7.5 (m, 2H), 9.4 (s, 1H); MS (DCI/NH3) m/e 313 (M+H)+.
Maleate salt: Anal. calcd for ClgH2oN20S~1.0 C4H404~0.4 HZO: C,60.65; H,5.74;
N,6.43.
Found: C,60.44; H,5.44; N,6.18.
Example 235 3-methyl-N-[(4-thien-2-yl-3,6-dihydropyridin-1 (2H)-yl)methyllbenzamide The procedure described in Example 200 was followed, substituting the product from Example 234B for the product from Example 119A to provide the title compound as a yellow sticky residue (84 mg). 'H NMR (300 MHz, CDCl3) S 2.35 (s, 3H), 2.78 (t, 2H, J=6 Hz), 3.2 (m, 2H), 4.12 (d, 1 H, J=6 Hz), 4.7 (t, 2H, J=6 Hz), 5.62 (t, 1 H, J=6 Hz), 6.1 (m, 1 H), 7.0 (m, 2H), 7.38 (d, 3H, J=6 Hz), 7.7 (m, 2H), 9.0 (t, 1H, J=6 Hz); MS (DCI/NH3) m/e 313 (M+H)+.
Maleate salt: Anal. calcd for C18H2oN20S~1.0 C4Hq.04: C, 61.67; H, 5.65; N, 6.54; Found: C, 62.03, H, 5.05, N, 6.24.
Exam lp a 236 2-(~2-[(3-chlorophenyl)amino]-2-oxoeth~~piperidin-4-yl)pyridinium N-oxide H
CI ~ N~Br ~ ~O
Example 236A
2-bromo-N-(3-chlorophenyl)acetamide The procedure described in Example lA was followed, substituting 3-chloroaniline for 3-methylaniline to provide the title compound as a white solid. 1H NMR
(300 MHz, DMSO-d6) S 4.05 (s, 2H), 7.15 (ddd, 1H, J=7.8, 2.0, 1.4 Hz), 7.36 (dd, 1H, J=7.8, 7.8 Hz), 7.44 (ddd, 1 H, J=8.1, 2.0, 1.4 Hz), 7.79 (dd, 1 H, J=2.0, 2.0 Hz), 10. 57 (br s, 1 H).
Example 236B
2-(1- f 2-[(3-chlorophenyllamino]-2-oxoethyl)piperidin-4-yl~yridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 236A for the product from Example 225A to provide the title compound. (226 mg, 66%). 1H NMR (300 MHz, DMSO-d6) S 1.68 (m, 2H), 1.92 (d, J=5.7 Hz, 2H), 2.30 (m, 2H), 3.01 (m, 2H), 3.19 (s, 2H), 3.25 (m, 1H), 6.89 (m, 1H), 7.35 (m, 3H), 7.42 (m, 2H), 7.68 (m, 1H), 8.26 (d, J=4.5, 1H), 9.91 (s, 1H); MS (DCI/NH3), m/e 330 (M+H-16)+, 346 (M+H)+, Maleate salt (294 mg): Anal. calcd for ClBHZON3O2Cl~1.O C4H4O4~O.2 HZO: C, 57.21; H, 5.24;
N, 9.01. Found: C, 57.28; H, 5.16; N, 8.70.
Example 237 2-[4-(1-methyl-1H-imidazol-2-~)-3,6-dihydropyridin-1 (2H)-yl]-N-(3-meth~lphenyl)acetamide Example 237A
tert-butyl 4-h~droxy-4-( 1-methyl-1 H-imidazol-2-~)piperidine-1-carboxylate 1-Methylimidazole (4.1 mL, 50 mmol) in dry tetrahydrofuran was treated with n-butyllithium (25 mL, SO mmol) at room temperature and heated at 40 °C
for 3 hours. The reaction was cooled to -78 °C and 4-oxo-piperidine-1-carboxylic acid tert-butylester (9.96 g, 50 mmol) added. The mixture was allowed to warm to room temperature, stirred for 6 hours the heated to 40 °C for an additional 3 hours. The reaction was cooled to room temperature, quenched with water and extracted with ethyl acetate. The organic phases were dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude material was recrystallized from methanol to provide the title compound (8.2 g, 84%) as white solid. 1H
NMR (300 MHz, CDCl3) S 1.45 (s, 9H), 1.8 (d, 2H, J=15 Hz), 2.1 (m, 2H), 3.3 (t, 3H, J=15 Hz), 3.8 (s, 4H), 6.8 (dd, 2H, J=9, 3 Hz); MS (DCI/NH3) m/e 282 (M+H)+.
Example 237B
tert-butyl 4-(1-methyl-1H-imidazol-2-yl)-3,6-dihydropyridine-1 2H)-carboxylate The product from Example 237A (5 g, 17.8 mmol) was taken in toluene and treated with (methoxycarbonylsulfamoyl)triethylammonium hydroxide, inner salt (Burgess Reagent, 6.35 g, 26.7 mmol) and heated to 90 °C for 6 hours. The reaction was cooled to room temperature and partitioned between ethyl acetate/water. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford 4.1 g (87%) of the title compound as a brown oily residue. 1H NMR (300 MHz, CDCl3) S 1.42 (s, 9H), 2.63 (m, 2H), 3 .61 (t, 2H, J=6 Hz), 3 .7 (s, 3 H), 4.1 (d, 2H, J=3 Hz), 6.02 (br s, 1 H), 6.9 (d, 1 H, J=1.5 Hz), 7.1 (d, 1H, J=1.5 Hz); MS (DCI/NH3) m/e 264 (M+H)+.
Example 237C
4-(1-methyl-1H-imidazol-2-yll-1,2,3,6-tetrahydropyridine The procedure described in Example 166B was followed, substituting the product from Example 237B for the product from Example 166A to provide the title compound as a yellow sticky residue (1.28 g, 41%). 'H NMR (300 MHz, CDC13) b 2.6 (m, 2H), 3.1 (t, 2H, J=6 Hz), 3.6 (m, 2H), 3.7 (s, 3H), 6.0 (m, 1H), 6.82 (d, 1H, J=1.5 Hz), 7.0 (d, 1H, J=1.5 Hz);
MS (DCI/NH3) m/e 164 (M+H)+.

Example 237D
2-[4-(1-methyl-1H-imidazol-2-yl)-3,6-dih~pyridin-1(2H~ lv 1~N-(3-methylphen~)acetamide The procedure described in Example 33C was followed, substituting the product from Example 237C for the product from Example 33B to provide the title compound 300mg (51%) as a yellow oil; 1H NMR (300 MHz, DMSO-d6) 8 2.30 (s, 3H), 2.5 (s, 2H), 2.6 (br s, 2H), 2.75 (m, 2H), 3.20 (s, 3H), 3.75 (s, 2H), 6.3 (br s, 1H), 6.9 (m, 2H), 7.2 (m, 2H), 7.42 (m, 2H), 9.65 (s, 1H); MS (DCI/NH3) mle 311 (M+H)+.
Maleate salt: Anal. calcd for C18Ha2N40~1.3 C4H404~1.7 H20: C, 56.65; H, 6.27;
N, 11.39.
Found: C, 56.57; H, 6.53; N, 11.23.
Example 23 8 N-(3-methylphenyl)-2-[4-(3-nitropyridin-2-~)piperazin-1-yllacetamide Example 238A
1-(3-nitropyridin-2-yl)piperazine To a solution of 2-chloro-3-nitropyridine (10.05 g, 63.39 mmol) in isopropyl alcohol (350 mL) at room temperature was added piperazine (27.48 g, 319.0 mmol) in one portion.
After 2 hours, the solvent was removed under reduced pressure and the residue partitioned between water and dichloromethane. The organic phase was dried (sodium sulfate), filtered and concentrated to a bright yellow solid. This material was used without further purification. IH NMR (300 MHz, CDCl3) b 1.74 (s, 1H), 2.98 (m, 4H), 3.43 (m, 4H), 6.73 (dd, 1H, J=8.1, 4.8 Hz), 8.11 (dd, 1H, J=8.1, 1.7 Hz), 8.32 (dd, 1H, J=4.4, 1.7 Hz); MS
(DCI/NH3) mle 209 (M+H)+.
Example 238B
N-(3-methylphenyl -L2-[4 ~3-nitro~yridin-2-~)piperazin-1-yl]acetamide The procedure described in Example 232B was followed, substituting the product from Example 238A for the product from Example 232A to provide the title compound (84%
yield) as a yellow solid. 1H NMR (300 MHz, CDCl3) 8 2.36 (s, 3H), 2.74 (m, 4H), 3.20 (s, 2H), 3.56 (m, 4H), 6.80 (dd, 1H, J=8.1, 4.4 Hz), 6.94 (br d, 1H, J=7.8 Hz), 7.23 (dd, 1H, J=7. S, 7 . 5 Hz), 7. 3 9 (m, 2H), 8.15 (dd, 1 H, J=8.1, 1.7 Hz), 8.3 5 (dd, 1 H, J=4. 8, 2.0 Hz), 9.01 (br s, 1H); MS (DCI/NH3) m/e 356 (M+H)+; Anal. calcd for C18Hz1N503: C, 60.83;
H, 5.96;
N, 19.71. Found: C, 60.66; H, 5.97; N, 19.70.
Example 239 2-[4-(3-chlorop~rridin-2-yl)piperazin-1-yll-N-(3-meth~phenyl~acetamide Example 239A
1~3-chloropyridin-2-yl)pi erazine A solution ofpiperazine (29.1 g, 338 mmol), 2,3-dichloropyridine (5.00 g, 33.8 mmol), and n-butanol (220 mL) was refluxed for 3 days. The reaction mixture was cooled to 23 °C and concentrated under reduced pressure. The residue was slurned with ethyl acetate and water. The ethyl acetate layer was poured off and dried over sodium sulfate, filtered, and concentrated to afford 4.8 g~ (72% yield) of the title compound. 1H NMR (300 MHz, DMSO-d6) 8 2.83 (m, 4H), 3.15 (m, 4H), 6.97 (dd, 1H, J=4.5, 7.5 Hz), 7.77 (dd, 1H, J=1.5, 7.5 Hz), 8.21 (dd, 1H, J=1.5, 4.5 Hz)); MS (ESI) m/e 198 (M+H)+.
Example 239B
2-[4-(3-chloropyridin-2-~)piperazin-1-yl]-N-(3-methylphenyl)acetamide The procedure described in Example 232B was followed, substituting the product from Example 239A for the product from Example 232A. The reaction mixture was concentrated under reduced pressure, and the residue was purified by chromatography (Prep Nova-Pak HR C18 column, 6 m 60 A, 25 x 100 mm, eluent gradient from 25% to 95%
acetonitrile:water with a constant 0.1% trifluoroacetic acid) to afford 109 mg (23% yield) of the trifluoroacetic acid salt: an amorphous solid mp 45-55 °C. 'H NMR
(300 MHz, DMSO-d6) 8 2.29 (s, 3H), 3.40 (br m, 8H), 3.80 (br m, 1H), 4.19 (br m, 1H), 6.96 (br d, 1H, J=7.5 Hz), 7.09 (dd, 1H, J=4.5, 7.5 Hz), 7.24 (dd, 1H, J=7.8, 7.8 Hz), 7.40 (m, 2H), 7.88 (dd, 1H, J=2.1, 8.1 Hz), 8.28 (dd, 1H, J=2.1, 4.8 Hz); MS (ESI) m/e 345 (M+H)+. Anal.
calcd for C18H21C1N4O~1.1 C2HF3O2: C, 51.59; H, 4.74; N, 11.91. Found: C, 51.58; H, 4.81; N, 11.99.
Example 240 2-(~2-oxo-2-j(2,4,6-tribromo-3-meth ly phenyl)amino]ethyl}piperidin-4-Xl)nyridinium N-oxide Example 240A
2-bromo-N-(2,4,6-tribromo-3-meth~phenyl)acetamide To a solution of 3-methyl-2,4,6-tribromoaniline (4.36 g, 12.7 mmol) in toluene (40 mL) at room temperature was added bromoacetyl chloride (1.20 rnL, 14.6 mmol) and the slurry heated to 100 °C for 24 h. The reaction was cooled, filtered, washed with and placed on a high vacuum pump to provide 2.88 g (49%) of the title compound as a white solid. mp 207-209 °C; 1H NMR (300 MHz, DMSO-d6) 8 2.52 (s, 3H) 4.07 (s, 2H) 8.05 (s, 1H) 10.38 (s, 1H); 13C NMR (100 MHz, DMSO-d6) 8 24.2, 28.6, 121.3, 123.4, 127.2, 134.3, 134.9, 137.6, 164.4; MS (DCI/NH3) mle 482 (M+NH4+); Anal. calcd for C9H~Br4N0: C, 23.26; H, 1.52; N, 3.01. Found: C, 23.30; H, 1.45; N, 2.94.
Example 240B
2-(1-f2-oxo-2-[(2,4,6-tribromo-3-methylphenyl)amino]ethyllpiperidin-4-yl)pyridinium N
oxide The procedure described in Example 225B was followed, substituting the product from Example 240A for the product from Example 225A to provide the title compound. (290 mg, 51%). 1H NMR (300 MHz, DMSO-d6) 8 1.75 (m, 2H), 1.92 (m, 2H), 2.30 (m, 2H), 2.54 (s, 3H), 3.12 (m, 1H), 3.15 (s, 2H), 3.31 (m, 1H), 7.30 (m, 3H), 7.40 (m, 2H), 8.26 (dd, J=4.5, 1.5 Hz, 1H), 9.78 (s, 1H); MS (DCI/NH3) m/e 545 (M+H-16)+; m/e 563 (M+H)+.
Maleate salt (294 mg): Anal. calcd for CZSHisNsOzBr3~1.O C4H4O4: C, 40.60; H, 3.59; N, 7.48. Found: C, 40.85; H, 3.54; N, 7.27.
Example 241 2- f 4-f 3-(aminomethvllpvridin-2-vllpiperazin-~1~N-(3-methvlphenvl)acetamide A solution of Example 5 (349 mg, 1.04 mmol) in 20 mL of 20% anhydrous ammonia in methanol was added Raney nickel (1.51 g) and the reaction stirred at room temperature under 60 psi of hydrogen pressure for 16 hours. The mixture was then filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 10% methanol:dichloromethane) to provide the title compound (340 mg, 96% yield)as a light yellow semi-solid. 'H NMR (300 MHz, DMSO-d6) 8 2.33 (s, 3H), 2.79 (m, 4H), 3.20 (m, 4H), 3.25 (s, 2H), 3.87 (s, 2H), 6.94 (br d, 1 H, J=7.5 Hz), 7.09 (dd, 1 H, J=7.5, 4. 8 Hz), 7.20 (dd, 1 H, J=7.5, 7.5 Hz), 7.40 (m, 2H), 7.79 (d, 1H, J=7.5 Hz), 8.17 (dd, 1H, 4.8, 1.7 Hz); MS (DCI/NH3) m/e 340.
Maleate salt: white solid; iH NMR (300 MHz, CD30D) 8 2.33 (s, 3H), 2.96 (m, 4H), 3.27 (m, 4H), 3.43 (s, 2H), 4.25 (s, 2H), 6.25 (s, 2H), 6.95 (br d, 1H, J=7.5 Hz), 7.21 (m, 2H), 7.40 (m, 2H), 7.81 (dd, 1H, J=7.5, 1.7 Hz), 8.38 (dd, 1H, J=4.8, 1.7 Hz); 13C NMR (100 MHz, DMSO-d6) 8 21.1, 37.8, 49.7, 52.5, 116.5, 118.8, 119.9, 121.8, 124.2, 128.2, 128.5, 135.8, 137.4, 137.9, 138.3, 147.5, 160.5, 167.1; Anal. calcd for C19HZSNSO~1.2 C4II4O4~O.2 HZO C4H~O4:
C, 59.27; H; 6.31; N, 14.52. Found: C, 59.61; H, 6.48; N, 14.42.
Example 242 2-[4-f 2-isopropoxyphen~)piperazin-1-yl]'-N-(3-methylphen~)acetamide Example 242A
1-isopropoxy-2-nitrobenzene A solution of 2-nitrophenol (10 g, 71.9 mmol) and potassium carbonate (21.85 g, 158.1 mmol) in N,N-dimethylfonnamide:acetone (1:2, 150 mL) was heated under reflux and isopropyl bromide (14.8 mL, 158 mmol) was added dropwise (in 30 minutes) during reflux and stirred overnight. The reaction was cooled to room temperature and partitioned between water and ethyl acetate. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (10% ethyl acetate:hexanes) to provide the title compound as a golden yellow oil (11.5 g, 88%). 1H NMR (300 MHz, CDC13) ~ 1.4 (d, 6H, J=6 Hz), 4.7 (septet, 1H, J=6 Hz), 6.98 (m, 1H), 7.09 (d, 1H, J=9 Hz), 7.45 (m, 1H), 7.78 (dd, 1H,,3 Hz);
MS (DCI/NH3) m/e 182 (M+H)+.
Example 242B
2-isopropoxyaniline The product from Example 242A (5.00 g, 27.5) was reduced under hydrogen pressure (60 psi) using 10% Pd/C catalyst in methanol. The catalyst was filtered and solution was concentrated under reduced pressure to afford 3.75 g (90%) of the desired product as brown oil. 1H NMR (400 MHz, CDC13) 8 1.35 (d, 6H, J=6.1 Hz), 3.77 (br s, 2H), 4.52 (m, 1H), 6.75 (m, 4H), ; MS (DCI/NH3) m/e 152 (M+H)+.
Example 242C
1-(2-isopropoxyphenyl)piperazine The product from Example 242B (3.5 g, 23.2 mmol) was added slowly to bis-2-chloroethylaime hydrochloride (4.96 g, 27.78 mmol) at room temperature and refluxed for 48 hours. The reaction was cooled to room temperature and sodium carbonate added (9 g) and refluxed for another 48 hours. The mixture was cooled to room temperature, filtered and the white solid partitioned between dichloromethane and 3N sodium hydroxide. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford 3.2 g (63%) pink oil. 1H NMR (300 MHz, CDC13) 8 1.4 (d, 6H, J=6 Hz), 1.5-1.6 (m, 4H), 2.45-2.65 (m, 4H), 3.43 (m, 1H), 6.6-6.8 (m, 2H), 6.81-6.91 (m, 2H); MS
(DCI/NH3) m/e 221 (M+H)+' Example 242D
2-[4-(2-isopropoxyphenyl)piperazin-1-~]-N-(3-methylphen~)acetamide The procedure described in Example 33C was followed, substituting the product from Example 2420 for the product from Example 33B to provide the title compound as a yellow oil (223 mg, 28%). IH NMR (300 MHz, CDCl3) 8 1.22 (d, 6H, J=6 Hz), 2.25 (s, 3H), 2.65-2. 70 (m, 4H), 3.2-3 .3 5 (m, 4H), 3 .3 8 (s, 2H), 4.6 (m, 1 H), 6. 85-6.91 (m, SH), 7.2 (t, 1 H, J=9 Hz), 7.4-7.48 (m, 2H), 9.62 (s, 1H); MS (DCI/NH3) m/e 368 (M+H)+.
Maleate salt: Anal. calcd for CZZH29N3C2'0~7C4Iiq04~ C, 66.38; H, 7.14; N, 9.36. Found: C, 66.50; H, 6.95; N, 9.16.
Example 243 2-(4- f 2-[(3-meth~phenyl~amino]-2-oxoethyl)piperazin-1-yl)nicotinamide A solution of the product from Example 5 (500 mg, 1.49 mmol) in 2N sodium hydroxide (15 mL) and ethanol (15 mL) was heated to 100 °C for 16 hours. The reaction was cooled, concentrated and the residue partitioned between ethyl acetate and water. The organic phase was dried (sodium sulfate), filtered and concentrated under reduced pressure to provide 18 mg (3% yield) of the title compound as a yellow semi-solid. IH NMR
(300 MHz, CD30D) 8 2.32 (s, 3H), 2.77 (m, 4H), 3.23 (s, 2H), 3.42 (m, 4H), 6.94 (br d, 1H, J=7.8 Hz), 7.00 (dd, 1 H, J=7.5, 4.8 Hz), 7.19 (dd, 1 H, J=7.8, 7.8 Hz), 7.39 (m, 2H), 7.95 (dd, 1 H, J=7.5, 2.0 Hz), 8.29 (dd, 1H, J=4.7, 2.0 Hz); MS (DCI/NH3) m/e 354 (M+H)+.
Maleate salt: yellow solid; 1H NMR (300 MHz, CD30D) 8 2.33 (s, 3H), 3.44 (m, 4H), 3.65 (m, 4H), 4.03 (s, 2H), 6.28 (s, 2H), 6.98 (br d, 1H, J=7.5 Hz), 7.06 (dd, 1H, J=7.8, 5.1 Hz), 7.21 (dd, 1 H, J=7. 8, 7.8 Hz), 7.40 (m, 2H), 7.94 (dd, 1 H, J=7. S, 1.7 Hz), 8.33 (dd, 1 H, J=4.8, 1.7 Hz); Anal. calcd for C19H23Ns02~1.3 C~Oø: C, 57.64; H, 5.64; N, 13.89.
Found: C, 57.60; H, 5.61; N, 13.61.
Example 244 ~3-methylpheny,-2-[(252-methyl-4-pyridin-2-vlpiperazin-1-yl]ethanethioamide A solution of the product from Example 214 (200 mg, 0.62 mmol) in dry toluene (6 mL) was treated with 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulphide (Lawesson's reagent, 125 mg, 0.31 mmol) and heated at 65 °C for 1 hour.
The mixture was allowed to cool to room temperature and concentrated under reduced pressure.
The residue was purified by flash column chromatography on silica gel (elution with 75%
hexanes:ethyl acetate) to provide 173 mg (82% yield) of the title compound as a yellow oil.
'H NMR (300 MHz, CDC13) 8 1.17 (d, J=6.1 Hz, 3H) 2.39 (s, 3H) 2.75 (dd, J=12.4, 9.8 Hz, 1H) 2.81 (m, 1H) 2.96 (m, 2H) 3.26 (t, J=5.5 Hz, 1H) 3.56 (d, J=17.6 Hz, 1H) 3.88 (d, J=17.6 Hz, 1H) 4.04 (m, 2H) 6.67 (t, J=6.1 Hz, 1H) 6.69 (d, J=8.5 Hz, 1H) 7.08 (d, J=7.5 Hz, 1H) 7.30 (t, J=7.8 Hz, 1 H) 7.52 (ddd, J=8.7, 7.0, 2.0 Hz, 1 H) 7.67 (s, 1 H) 7.74 (d, J=8.1 Hz, 1 H) 8.22 (dd, J=4.9, 1.9 Hz, 1H) 11.25 (s, 1H); MS (DCI/NH3) m/e 341.2 (M+H)+.
Maleate salt: yellow solid; 1H NMR (300 MHz, DMSO-db) 8 1.13 (m, 3H) 2.34 (s, 3H) 3.06 (m, 2H) 3.31 (m, 3H) 3.79 (m, 2H) 4.05 (m, 2H) 6.22 (s, 2H) 6.69 (m, 1H) 6.94 (d, J=7.8 Hz, 1H) 7.11 (d, J=7.5 Hz, 1H) 7.32 (t, J=7.1 Hz, 1H) 7.58 (d, J=6.8 Hz, 1H) 7.63 (s, 1H) 7.71 (d, J=7.5 Hz, 1H) 8.11 (d, J=4.1 Hz, 1H) 11.54 (s, 1H); Anal. calcd for CZOH25N3O2~1.S C4H4O4:
C, 58.35; H, 5.88; N, 10.89. Found: C, 58.35; H, 5.99; N, 10.41.
Example 245 2-(1-f~(4-bromo-3-methylbenzoyl amino]methyl}piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 4-bromo-3-methylbenzamide (Lancaster) for 3-methylbenzamide to provide the title compound (10%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.54 (m, 2H) 1.89 (m, 2H) 2.34 (m, 2H) 2.41 (s, 3H) 2.95 (m, 2H) 3.21 (m, 1H) 4.16 (d, J=5.8 Hz, 2H) 7.29 (m, 2H) 7.39 (m, 1H) 7.63 (dd, J=8.1, 2.0 Hz, 1H) 7.69 (d, J=8.1 Hz, 1H) 7.87 (d, J=2.0 Hz, 1H) 8.23 (m, 1H) 8.80 (t, J=5.9 Hz, 1H); MS (DCI/NH3) m/e 404/406 (M+H)+; 388/390 (M-16)+; Anal.
calcd for Ci9Ha2BrN302~0.8 H20: C, 54.50; H, 5.68; N, 10.04. Found: C, 54.38; H, 5.15;
N, 9.75.
Example 246 2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-[meth 1~)phenyllacetamide The procedure described in Example 145 was followed, substituting 2-chloro-N-(3-methylsulfanylphenyl)acetamide for the product from Example 143B to provide the title compound as a yellow sticky residue (420 mg, 82%). IH NMR (300 MHz, CDC13) 8 2.5 (s, 3H), 2.7 (t, 4H, J=6 Hz), 3.22 (s, 2H), 3.8 (t, 4H, J=6 Hz), 6.82 (dd, 1H, J=9, 6 Hz), 7.0-7.7 (m, 3 H), 7. 5 5 (m, 1 H), 7. 80 (dd, 1 H, J=9, 3 Hz), 8 . 3 8 (dd, 1 H, J=6, 3 Hz), 9 . 07 (br s, 1 H);
MS (DCI/NH3) xn/e 368 (M+H)+.
Maleate salt: Anal. calcd for Cl9HzIN5OS~1.O C4H4O4: C, 57.13; H, 5.21; N, 14.48. Found:
C, 57.02; H, 5.20; N, 14.45.
Example 247 N-(3-tert-butylphenyl)-2-[4-(3-c anopyridin-2-yl~piperazin-1-yl]acetamide Example 247A
N-(3-tert-butylphenyl)-2-chloroacetamide The procedure described in Example 33A was followed, substituting 3-t-butylaniline for 3-methylaniline to provide the title compound (86% yield) as a white solid. 'H NMR
(300 MHz, DMSO-d6) & 1.27 (s, 9H), 4.23 (s, 2H), 7.12 (ddd, 1H, J=8.1, 2.0, 1.4 Hz), 7.25 (dd, 1H, J=7.8, 7.8 Hz), 7.47 (ddd, 1H, J=8.1, 2.0, 1.0 Hz), 7.56 (dd, 1H, J=2.0, 2.0 Hz), 10.22 (br s, 1H); MS (DCI/NH3) m/e 225 (M+H)+; 243 (M+NH4)+.
Example 247B
N-(3-tert-but~phen~)-2-[~3-cyanopyridin-2-Kl)piperazin-l~llacetamide 1-(2-cyanopyridyl)piperazine (850 mg, 4.52 mmol, Chess) and N,N-diisopropylamine (5.0 mL) in toluene (20 mL) were treated with the product from Example 247A
(810 mg, 3.59 mmol) and heated to 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 25% ethyl acetate:hexanes) to provide 984 mg (73% yield) of the title compound as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 1.27 (s, 9H), 2.68 (m, 4H), 3.20 (s, 2H), 3.68 (m, 4H), 6.93 (dd, 1H, J=7.5, 4.8 Hz), 7.09 (m, 1H), 7.22 (dd, 1H, J=7.8, 7.8 Hz), 7.52 (m, 1H), 7.63 (dd, 1H, J=2.0, 2.0 Hz), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=4.7, 2.0 Hz), 9.71 (br s, 1H); MS (DCI/NH3) m/e 378 (M+H)+; Anal. calcd for CZZHa~N50: C, 70.00; H, 7.21; N, 18.55. Found: C, 69.76; H, 7.16;
N, 18.29.
Example 248 2-[4-(2-hydroxyphenyllpiperazin-1-yl]-N-(3-methylphenyl)acetamide The procedure described in Example 232B was followed, substituting 2-(1-piperazino)phenol for the product from Example 232A to provide the title compound (80%
yield) as a light tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.68 (m, 4H), 3.01 (m, 4H), 3.16 (s, 2H), 6.78 (m, SH), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.45 (m, 2H), 8.90 (s, 1H), 9.63 (s, 1H); MS (DCI/NH3) m/e 326 (M+H)+; Anal. calcd for C19H23N3Oa: C, 70.13; H, 7.12; N, 12.91. Found: C, 69.95; H, 7.09; N, 12.85.
Example 249 2-[4-(3-hydroxyphen~)piperazin-1-yl]I-N-(3-methylphenyl)acetamide The procedure described in Example 232B was followed, substituting 3-(1-piperazino)phenol for the product from Example 232A to provide the title compound (77%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) S 2.27 (s, 3H), 2.64 (m, 4H), 3.14 (m, 4H), 3.16 (s, 2H), 6.20 (dd, 1H, J=8.5, 2.7 Hz), 6.31 (dd, 1H, J=2.0, 2.0 Hz), 6.38 (dd, 1H, J=8.1, 2.0 Hz), 6.87 (d, 1H, J=7.5 Hz), 6.98 (dd, 1H, J=8.1, 8.1 Hz), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.44 (m, 2H), 9.09 (s, 1H), 9.64 (s, 1H); MS (DCI/NH3) m/e 326 (M+H)+; Anal.
calcd for C19H23N3~2~ C, 70.13; H, 7.12; N, 12.91. Found: C, 69.91; H, 7.19;
N, 12.69.

Example 250 2-[4-(4-h~yphen~~piperazin-1-~]-~3-meths henyl acetamide The procedure described in Example 232B was followed, substituting 4-(1-piperazino)phenol for the product from Example 232A to provide the title compound (39%
yield) as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 2.64 (m, 4H), 3.03 (m, 4H), 3.15 (s, 2H), 6.64 (AA'BB', 2H, J=8.8 Hz), 6.79 (AA'BB', 2H, J=8.8 Hz), 6.87 (d, 1 H, J=7. S Hz), 7.18 (dd, 1 H, J=7. 8, 7. 8 Hz), 7.44 (m, 2H), 8.79 (s, 1 H), 9.63 (s, 1 H); MS
(DCI/NH3) mle 326 (M+H)+; Anal. calcd for C19H23N3O2: C, 70.13; H, 7.12; N, 12.91.
Found: C, 69.82; H, 7.21; N, 12.815.
Example 251 2-[4-(2-ethoxyphen~)piperazin-1-yl]-N-(3-methylphenyl)acetamide The procedure described in Example 232B was followed, substituting 1-(2-ethoxyphenyl)piperazine for the product from Example 232A to provide the title compound (84% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.34 (t, 3H, J=6.8 Hz), 2.28 (s, 3H), 2.67 (m, 4H), 3.06 (m, 4H), 3.17 (s, 2H), 4.01 (q, 2H, J=7.1 Hz), 6.90 (m, SH), 7.18 (dd, 1H, J=7.5, 7.5 Hz), 7.45 (m, 2H), 9.64 (s, 1H); MS (DCI/NH3) m/e 354 (M+H)+. Anal.
calcd for CZOHZSN30~0.20 HaO: C, 70.64; H, 7.73; N, 11.77. Found: C, 70.74; H, 7.56; N, 11.78.
Example 252 N-(3-meth~phenyl)-2-f4-[2-(meth 1~)phenyl]piperazin-1-yl~acetamide The procedure described in Example 232B was followed, substituting 1-(2-methylsulfanylphenyl)piperazine for the product from Example 232A to provide the title compound (84% yield) as a yellow oil. IH NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.36 (s, 3H), 2.68 (m, 4H), 2.97 (m, 4H), 3.18 (s, 2H), 6.88 (d, 1H, J=7.8 Hz), 7.12 (m, SH)7.45 (m, 2H), 9.64 (s, 1H); MS (DCI/NH3) m/e 356 (M+H)+.
Maleate salt: white solid; Anal. calcd for CZOHzsN3OS~1.0 C4Hq04: C, 61.13; H, 6.20; N, 8.91. Found: C, 60.78; H, 6.11; N, 8.81.
Example 253 2-[4-(2-fluorophenyl)piperazin-1-~l-N-(3-methylphenyl)acetamide The procedure described in Example 232B was followed, substituting 1-(2-fluorophenyl)piperazine for the product from Example 232A to provide the title compound (84% yield) as a tan solid. 'H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.69 (m, 4H), 3.09 (m, 4H), 3.18 (s, 2H), 6.88 (d, 1H, J=7.8 Hz), 7.06 (m, 4H), 7.18 (dd, 1H, J=7.8, 7.8 Hz), 7.45 (m, 2H), 9.65 (s, 1H); MS (DCI/NH3) m/e 328 (M+H)+; Anal. calcd for C19H2zFNsO: C, 69.70; H, 6.77; N, 12.83. Found: C, 69.52; H, 6.73; N, 12.80.
Example 254 2-[~3-cyanopyridin-2-~)piperazin-1-yl]-N-(3-fluorophenyl)acetamide Example 254A
2-chloro-N-(3-fluorophen~l)acetamide The procedure described in Example 33A was followed, substituting 3-fluorophenylamine for 3-methylaniline to provide the title compound as a white solid. 1H
NMR (300 MHz, CDC13) S 4.19 (s, 2H), 6.88 (dddd, 1H, J=8.1, 8.1, 2.7, 1.0 Hz), 7.19 (ddd, 1H, J=8.1, 2.0, 1.0 Hz), 7.31 (ddd, 1H, J=8.1, 8.1, 6.4 Hz), 7.52 (ddd, 1H, J=10.6, 2.3, 2.3 Hz), 8.26 (br s, 1H); MS (DCI/NH3) m/e 187 (M+H)+; 205 (M+NH4)+.
Example 254B
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]'-N-(3-fluorophenyl)acetamide The procedure described in Example 247B was followed, substituting the product from Example 254A for the product from Example 247A to provide the title compound (81%
yield) as a tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.23 (s, 2H), 3.68 (m, 4H), 6.89 (m, 1H), 6.93 (dd, 1H, J=7.8, 4.8 Hz), 7.34 (ddd, 1H, J=8.0, 8.0, 6.6 Hz), 7.42 (ddd, 1H, J=8.1, 1.5, 1.5 Hz), 7.65 (ddd, 1H, J=11.7, 2.4, 2.4 Hz), 8.07 (dd, 1H, J=7.5, 2.0 Hz), 8.42 (dd, 1H, J=4.8, 2.0 Hz), 9.98 (br s, 1H); MS (DCI/NH3) m/e 340 (M+H)+;
Anal. calcd for C1$H18FN50: C, 63.71; H, 5.35; N, 20.64. Found: C, 63.59; H, 5.11; N, 20.56.
Example 255 N-L3-bromophenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide Example 255A
N-(3-bromopheny~-2-chloroacetamide The procedure described in Example 33A was followed, substituting 3-bromophenylamine for 3-methylaniline to provide the title compound (100%
yield) as a white solid. 1H NMR (300 MHz, CDC13) ~ 4.19 (s, 2H), 7.24 (m, 1H), 7.31 (m, 1H), 7.47 (m, 1H), 7.81 (dd, 1H, J=1.9, 1.9 Hz), 8.20 (br s, 1H); MS (DCI/NH3) m/e 248/250 (M+H)+; 263/265 (M+NH4)+.
Example 255B
N~3 bromophenyll 2 f4 (3 cyanopyridin-2-yl)piperazin-1-yllacetamide The procedure described in Example 247B was followed, substituting the product from Example 255A for the product from Example 247A to provide the title compound (84%
yield) as a tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.68 (m, 4H), 3.22 (s, 2H), 3.69 (m, 4H), 6.93 (dd, J=7.5, 4.8 Hz, 1H), 7.26 (m, 2H), 7.62 (ddd, J=7.1, 2.0, 2.0 Hz, 1H), 8.00 (m, 1H), 8.07 (dd, 1H, J=7.5, 1.7 Hz), 8.42 (dd, 1H, J=4.7, 1.7 Hz), 9.94 (br s, lI~; MS
(DCI/NH3) m/e 400/402 (M+H)+; Anal. calcd for C18H18BrN50: C, 54.01; H, 4.53;
N, 17.50.
Found: C, 54.02; H, 4.37; N, 17.63.
Example 256 N (3 methylphenyll 2 (4 nyridin-2-ylpiperazin-1-yllethanethioamide A solution of the product from Example 4 (250 mg, 0.81 mmol) in dry toluene (6 mL) was treated with 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulphide (Lawesson's reagent, 163 mg, 0.4 mmol) and heated at 65 °C for 1 hour.
The mixture was allowed to cool to room temperature and concentrated under reduced pressure.
The residue was purified by flash column chromatography on silica gel (elution with 75%
hexanes:ethyl acetate) to provide 185 mg (70% yield) of the title compound as an off white solid. 1H NMR
(300 MHz, CDC13) 8 2.39 (s, 3H) 2.77 (m, 4H) 3.65 (m, 6H) 6.68 (m, 2H) 7.08 (d, J=7.5 Hz, 1H) 7.30 (t, J=7.8 Hz, 1H) 7.51 (ddd, J=8.7, 7.0, 2.0 Hz, 1H) 7.67 (s, 1H) 7.75 (d, J=8.1 Hz, 1H) 8.21 (ddd, J=4.9, 1.9, 0.7 Hz, 1H) 11.04 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+;
Anal. calcd for CISHzzN4S: C, 66.22; H, 6.79; N, 17.16. Found: C, 66.15; H, 6.79; N, 17.00.
Example 257 2-'[4-(2-aminophen~)niperazin-1-yl]-N-(3-methylphenyl)acetamide A solution of the product from Example 7 (299 mg, 0.636 mmol) in methanol (20 mL) was treated with 10% palladium on carbon and placed under 60 psi of hydrogen at room temperature for 80 minutes. The heterogeneous mixture was filtered, concentrated under reduced pressure and the residue portioned between 2N sodium hydroxide and dichloromethane. The organic phase was dried (sodium sulfate), filtered and concentrated under reduced pressure to provide the title compound (160 mg, 78% yield) as a light tan solid, which darkens upon standing. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.69 (m, 4H), 2.87 (rn, 4H), 3.17 (s, 2H), 4.69 (s, 2H), 6.55 (ddd, 1H, J=7.5, 7.5 1.7 Hz), 6.66 (dd, 1H, J=7.8, 1.4 Hz), 6.80 (ddd, 1H, J=7.5, 7.5, 1.4 Hz), 6.88 (m, 1H), 6.92 (dd, 1H, J=7.8, 1.4 Hz), 7.19 (dd, 1H, J=7.8, 7.8 Hz), 7.46 (m, 2H), 9.63 (s, 1H); MS (DCI/NH3) m/e 325 (M+H)+, Anal. calcd for C19H24N4O~O.OS CH2Clz: C, 69.62; H, 7.39; N, 17.05. Found: C, 69.52; H, 7.32; N, 17.13.
Example 258 N-(3-nitrophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide 1-(2-pyridinyl)piperazine (0.65 mL, 4.3 mmol, Aldrich) and N,N-diisopropylamine (5.0 mL,) in toluene (20 mL) were treated with 2-chloro-N-(3-nitrophenyl)acetamide (750 mg, 3.49 mmol, Lancaster) and heated to 60 °C for 18 hours. The mixture was allowed to cool to room temperature, transferred to a separatory funnel and washed with saturated aqueous sodium bicarbonate. The organic phase was dried (sodium sulfate), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (elution with 25% ethyl acetate:hexanes) to provide 900 mg i (76% yield) of the title compound as a tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.62 (m, 4H), 3.24 (s, 2H), 3.56 (m, 4H), 6.63 (ddd, 1H, J=7.1, 4.7, 0.7 Hz), 6.83 (d, 1H, J=8.8 Hz), 7.52 (ddd, 1H, J=8.5, 7.1, 2.0), 7.61 (dd, 1H, J=8.5, 8.5 Hz), 7.92 (ddd, 1H, J=8.1, 2.4, 1.0 Hz), 8.04 (ddd, 1 H, J=8. 5, 2.4, 1.0 Hz), 8.11 (ddd, 1 H, J=4. 8, 1.7, 0.7 Hz), 8.70 (dd, 1 H, J=2.0, 2.0 Hz), 10.27 (br s, 1H); MS (DCI/NH3) m/e 342 (M+H)+; Anal. calcd for CmH19Ns03: C, 59.81; H, 5.61; N, 20.52. Found: C, 59.61; H, 5.55; N, 20.23.
Example 259 2-[4-(2-cyanophenyl)piperazin-1-yl]-N-(3-nitrophenyl)acetamide The procedure described in Example 258 was followed, substituting 2-piperazin-ylbenzonitrile (Chess) for 1-(2-pyridinyl)piperazine to provide the title compound (58%
yield) as a white solid. IH NMR (300 MHz, DMSO-d6) 8 2.74 (m, 4H), 3.24 (m, 4H), 3.29 (s, 2H), 7.10 (ddd, 1 H, J=7.5, 7.5, 0.7 Hz), 7.19 (d, 1 H, J=8.5 Hz), 7.61 (m, 2H), 7.70 (dd, 1 H, J=7. 8, 1.7 Hz), 7.93 (ddd, 1 H, J=8.5, 2.4, 1.0 Hz), 8.04 (ddd, 1 H, J=8.5, 2.4, 1.0 Hz), 8.70 (dd, 1H, J=2.0, 2.0 Hz), 10.28 (br s, 1H); MS (DCI/NH3) m/e 366 (M+H)+;
Anal. calcd for C19H19N5~3: C, 62.46; H, 5.24; N, 19.17. Found: C, 62.41; H, 5.02; N, 19.08.
Exam lp a 260 N-(3-cyanophenyl)-2-(4-pyridin-2-~piperazin-1-~)acetamide The procedure described in Example 258 was followed, substituting 2-chloro-N-(3-cyanophenyl)acetamide (Maybridge) for 2-chloro-N-(3-nitrophenyl)acetamide to provide the title compound (79% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) ~ 2.61 (m, 4H), 3.22 (s, 2H), 3.56 (m, 4H), 6.63 (ddd, 1H, J=7.1, 5.1, 0.7 Hz), 6.83 (d, 1H, J=8.5 Hz), 7.52 (m, 3H), 7.95 (m, 1H), 8.11 (ddd, 1H, J=4.7, 2.0, 0.7 Hz), 8.15 (m, 1H), 10.10 (br s, 1H); MS
(DCI/NH3) m/e 322 (M+H)+; Anal. calcd for C~$H19N50: C, 67.27; H, 5.96; N, 21.79.
Found: C, 67.27; H, 5.97; N, 21.73.
Example 261 N-(3-cyanophen~)-2-[4-(2-c~phenyl)piperazin-1-~]acetamide The procedure described in Example 258 was followed, substituting 2-chloro-N-(3-cyanophenyl)acetamide (Maybridge) for 2-chloro-N-(3-nitrophenyl)acetamide and substituting 2-piperazin-1-ylbenzonitrile (Chess) for 1-(2-pyridinyl)piperazine to provide the title compound (74% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 2.73 (m, 4H), 3.23 (m, 4H), 3.27 (s, 2H), 7.10 (ddd, 1H, J=7.8, 7.8, 1.0 Hz), 7.19 (d, 1H, J=8.5 Hz), 7.53 (m, 2H), 7.61 (ddd, 1 H, J=8.5, 7.5, 1.7 Hz), 7.70 (dd, 1 H, J=7. 8, 1.7 Hz), 7.94 (m, 1 H), 8.14 (m, 1H), 10.11 (br s, 1H); MS (DCI/NH3) m/e 346 (M+H)+; Anal. calcd for C2pH~9N5O~O.1 H20~0.05 CHZC12: C, 68.52; H, 5.54; N, 19.93. Found: C, 68.52; H, 5.52; N, 19.81.
Example 262 2-f4-(3-cyanopyridin-2-~)piperazin-1-yl]-N~- pentafluorophe~l)acetamide Example 262A
2-chloro-N-(pentafluorophenyl acetamide The procedure described in Example 22A was followed, substituting pentafluorophenylamine for 3,4,5-trimethoxyaniline to provide the title compound (94%
yield) as a tan solid. IH NMR (300 MHz, DMSO-d6) 8 3.31 (s, 2H), 10.48 (br s, 1H); MS
(DCI/NH3) m/e 259 (M+H)+; 277 (M+NH4)+.
Example 262B
2-f 4-(3-cyanopyridin-2-yl)~iperazin-1 yll-N-~pentafluorophen~)acetamide The procedure described in Example 247B was followed, substituting the product from Example 262A for the product from Example 247A to provide the title compound (71 yield) as an oil. 1H NMR (300 MHz, DMSO-d6) b 2.69 (m, 4H), 3.32 (s, 2H), 3.69 (m, 4H), 6.93 (dd, 1H, J=7.8, 4.8 Hz), 8.07 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=4.8, 1.7 Hz), 9.93 (br s, 1H); MS (DCI/NH3) m/e 412.
Maleate salt: white solid; IH NMR (300 MHz, CD30D) b 3.18 (m, 4H), 3.84 (s, 2H), 3.87 (m, 4H), 6.28 (s, 2H), 6.98 (dd, 1H, J=7.8, 5.1 Hz), 7.99 (dd, 1H, J=7.8, 2.0 Hz), 8.42 (dd, 1H, J=4.7, 1.7 Hz); Anal. calcd for Cl$HlqF5N50~1.0 C4H404: C, 50.10; H, 3.44; N, 13.28.
Found: C, 49.81; H, 3.41; N, 12.90.
Example 263 2-~4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-( 1 3-dimethyl-1 H-pyrazol-5-yl)acetamide The procedure described in Example 247B was followed, substituting 2-chloro-N-(2,5-dimethyl-2H-pyrazol-3-yl)acetamide (Maybridge) for the product from Example 247A
to provide the title compound (84% yield) as an oil. MS (DCI/NH3) m/e 340 (M+H)+.
Maleate salt: white solid; IH NMR (300 MHz, CD3OD) ~ 2.19 (s, 3H), 3.26 (m, 4H), 3.67 (s, 3H), 3.88 (m, 6H), 6.12 (s, 1H), 6.27 (s, 2H), 7.00 (dd, 1H, J=7.5, 4.7 Hz), 8.00 (dd, 1H, J=7.8, 2.0 Hz), 8.43 (dd, 1H, J=5.1, 2.0 Hz); Anal. calcd for C1~H21N~0~1.0 C4H4O4: C, 55.38; H, 5.53; N, 21.53. Found: C, 55.07; H, 5.65; N, 21.30.
Example 264 N-(3-benzylphen~L[4-~-cyanopyridin-2-~)piperazin-1-yl]acetamide Example 264A
N-(3-benzylphenyl)-2-chloroacetamide The procedure described in Example 33A was followed, substituting 3-benzylphenylamine for 3-methylaniline to provide the title compound (84%
yield) as a white solid. 'H NMR (300 MHz, DMSO-d6) S 3.92 (s, 2H), 4.21 (s, 2H), 6.98 (d, 1H, J=7.5 Hz), 7.24 (m, 6H), 7.39 (m, 1H), 7.44 (d, 1H, J=8.1 Hz), 10.22 (br s, 1H); MS
(DCI/hlH3) m/e 260 (M+H)+; 277 (M+NH4)+.
Example 264B
N-(3-benzylphenyl)-2-[4-(3-c~pyridin-2-~)piperazin-1-yl]acetamide The procedure described in Example 247B was followed, substituting the product from Example 264A for the product from Example 247A to provide the title compound (86%
yield) as an oil. 1H NMR (300 MHz, DMSO-ds) 8 2.67 (m, 4H), 3.18 (s, 2H), 3.67 (m, 4H), 3.90 (s, 2H), 6.92 (m, 2H), 7.22 (m, 6H), 7.50 (m, 2H), 8.07 (dd, l H, J=7.8, 2.0 Hz), 8.41 (dd, 1H, J=4.7, 2.0 Hz), 9.72 (br s, 1H); MS (DCI/NH3) m/e 412 (M+H)+.
Maleate salt: white solid; 1H NMR (300 MHz, DMSO-db) 8 3.35 (m, 4H), 3.90 (m, 6H), 3.95 (s, 2H), 6.26 (s, 2H), 7.01 (m, 2H), 7.21 (m, 6H), 7.44 (m, 2H), 8.01 (dd, 1 H, J=7.5, 1.7 Hz), 8.43 (dd, 1 H, J=5. l, 2.0 Hz); Anal. calcd for C25HzsNsO~ 1.0 C4H404: C, 66.02; H, 5.54; N, 13.27. Found: C, 65.68; H, 5.49; N, 13.08.
Example 265 2-[4-(2-chlorophenyl)piperazin-1-ylJ-N-(3-methylphenvl)acetamide The procedure described in Example 232B was followed, substituting 1-(2-chlorophenyl)piperazine for the product from Example 232A to provide the title compound (92°!° yield) as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.71 (m, 4H), 3.05 (m, 4H), 3.20 (s, 2H), 6.87 (br d, 1H, J=7.7 Hz), 7.04 (ddd, 1H, J=8.0, 7.4, 1.5 Hz), 7.19 (m, 2H), 7.30 (ddd, 1H, J=8.0, 7.4, 1.5 Hz), 7.40 (dd, 1H, J=8.0, 1.5 Hz)7.46 (m, 2H), 9.64 (br s, 1H); MS (DCI/NH3) m/e 344 (M+H)+; Anal. calcd for C19H22C1N3O: C, 66.37; H, 6.45; N, 12.22. Found: C, 66.40; H, 6.50; N, 12.22.
Example 266 2-[4-(3-c~anoRyrazin-2-yl)piperazin-1-yl]-N-(3-methylphen~)acetamide The procedure described in Example 232B was followed, substituting 3,4,5,6 tetrahydro-2H-[1,2']bipyrazinyl-3'-carbonitrile for the product from Example 232A to provide the title compound (82% yield) as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 2.28 (s, 3H), 2.69 (m, 4H), 3.20 (s, 2H), 3.80 (m, 4H), 6.88 (br d, 1H, J=7.5 Hz), 7.18 (dd, 1 H, J=7. 8, 7.8 Hz), 7.44 (br d, 1 H, J=7. 8 Hz), 7.47 (br s, 1 H), 8.11 (d, 1 H, J=2.4 Hz), 8.45 (d, 1H, J=2.0 Hz), 9.69 (br s, 1H); MS (DCI/NH3) mle 337 (M+H)+; Anal. calcd for CIBH~oN60:
C, 64.27; H, 5.99; N, 24.98. Found: C, 64.04; H, 6.10; N, 24.60.
Example 267 2-(4-nyridin-2-ylpiperazin-1-~)-N-(2-f [(4-pyridin-2-y~perazin-1 ~)acetyl] amino ~phenyl)acetamide The procedure described in Example 181 was followed, substituting 2-chloro-N-[2-(2-chloroacetylamino)phenyl]acetamide (Aldrich) for N-(2,5-dimethylphenyl)-2-chloroacetamide and using 2.4 equivalents of 1-pyridin-2-yl-piperazine to provide the title compound (74% yield) as a light tan solid. 1H NMR (300 MHz, DMSO-d6) 8 2.59 (m, 8H), 3.18 (s, 4H), 3.52 (m, 8H), 6.63 (dd, 2H, J=5.1, 5.1 Hz), 6.78 (d, 2H, J=8.5 Hz), 7.20 (dd, 2H, J=5.8, 3.4 Hz), 7.51 (dd, 2H, J=8.5, 8.5 Hz), 7.60 (dd, 2H, J=5.8, 3.7 Hz), 8.10 (d, 2H, J=3.7 Hz), 9.64 (br s, 2H); MS (DCI/NH3) m/e 515 (M+H)+; Anal. calcd for CZ8H34N80z~0.4 C4H8O2~O.1 HZO: C, 64.44; H, 6.83; N, 20.31. Found: C, 64.42; H, 6.67; N, 20.12.
Example 268 N-(3-methylphenyl)-2-(4-pyridin-2- ly~iperidin-1-yl)ethanethioamide A solution of the product from Example 36D (77 mg, 0.25 mmol) in dry toluene (3 mL) was treated with 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulphide (Lawesson's reagent, 51 mg, 0.13 mmol) and heated at 65 °C for 1 hour.
The mixture was allowed to cool to room temperature and concentrated under reduced pressure.
The residue was purified by flash column chromatography on silica gel (elution with 5%
methanol:dichloromethane) to provide 40 mg (0.12 mmol, 49% yield) of the title compound as a yellow oil. 1H NMR (300 MHz, DMSO-d6) 8 1.85 (m, 2H) 1.96 (dq, J=12.4, 12.4, 12.4, 3.6 Hz, 2H) 2.34 (s, 3H) 2.39 (m, 2H) 2.70 (tt, J=11.8, 11.8, 3.7, 3.9 Hz, 1H) 2.96 (m, 2H) 3 .55 (s, 2H) 7.09 (d, J=7.80 Hz, 1 H) 7.22 (ddd, J=7.5, 4.7, 1.0 Hz, 1 H) 7.31 (t, J=7.7 Hz, 1 H) 7.32 (d, J=7.8 Hz, 1 H) 7.65 (s, 1 H) 7.71 (dd, J=7.8, 1.7 Hz, 1 H) 7.73 (dt, J=7.8, 7.8, 1.7 Hz, 1H) 8.50 (dd, J=5.0, 1.2 Hz, 1H) 11.34 (s, 1H); MS (DCI/NH3) m/e 326.1 (M+H)+.
Anal.
calcd for Cl9HZSNaS~ C, 70.12; H, 7.12; N, 12.91. Found: C, 69.87; H, 7.11; N, 12.78.
Exam lp a 269 2-~4-(1-methyl-1H-imidazol-2-yl)piperidin-1-,~1]-N-(3-methylphenyl)acetamide The procedure described in Example 224 was followed, substituting the product from Example 237D for the product from Example 1660 to provide the title compound as a pale yellow oil (13 mg). IH NMR (300 MHz, DMSO-d6) 8 1.7-1.85 (m, 4H), 2.5-2.35 (m, 4H), 2.75 (m, 1H), 2.85-2.95 (m, 2H), 3.1 (s, 3H), 3.6 (s, 3H), 6.65 (d, 1H, J=3 Hz), 6.85-6.95 (m, 1H), 6.95 (d, 1H, J=3 Hz), 7.2 (m, 1H), 7.5 (m, 2H), 9.6 (s, 1H); MS (DCI/NH3) m/e 313 (M+H)+.
Example 270 N-(3-methylphenyl)-2-[4-( 1, 3-thiazol-2-yl)piperidin-1-yl]' acetamide The procedure described in Example 224 was followed, substituting the product from Example 233 for the product from Example 166C to provide the title compound (35 mg) as pale yellow oil. IH NMR (300 MHz, DMSO-d6) 8 1.8-1.95 (m, 2H), 2.0-2.15 (m, 2H), 2.22 (s, 3H), 2.25- 2.35 (m, 2H), 2.85-2.98 (m, 2H), 3.0 (m, 1H), 3.15 (s, 2H), 6.82 (d, 1H, J=9 Hz), 7.18 (t, 1 H, J=7. S Hz), 7.45 (m, 2H), 7.6 (d, 1 H, J=3 Hz,), 7.7 (d, 1 H, J=3 Hz), 9.6 ( br s, 1H); MS (DCI/NH3) m/e 316 (M+H)+.
Exam lp a 271 N-(4-iodo-3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-lyl)acetamide Example 271A
2-bromo-N-(4-iodo-3-methylphe~rl acetamide The procedure described in Example lA was followed, substituting 4-iodo-3 methylaniline for 3-methylaniline to provide the title compound as a white solid. 1H NMR
(300 MHz, DMSO-d6) b 2.33 (s, 3H), 4.02 (s, 2H), 7.20 (dd, 1H, J=8.5, 2.4 Hz), 7.56 (d, 1H, J=2.4 Hz), 7.74 (d, 1H, J=8.5 Hz), 10.40 (br s, 1H); MS (DCI/NH3) mle 353/355 (M+H)+;
371.373 (M+NH4)+.

Example 271B
N-(4-iodo-3-methylphenyl)-2-(4-pyridin-2-y~iperidin-1-yl, acetamide The procedure described in Example 225B was followed, substituting the product from Example 271A for the product from Example 225A to provide the title compound. (290 mg, 51%). 1H NMR (300 MHz, DMSO-d6) 8 1.83 (m, 4H), 2.28 (m, 2H), 2.33 (s, 3H), 2.64 (m, 1H), 2.98 (m, 2H), 3.12 (s, 2H), 7.20 (m, 2H), 7.30 (m, 2H), 7.65 (d, J=3 Hz, 1H), 7.73 (m, 2H), 9.76 (br s, 1H); MS (DCI/NH3) mle 436 (M+H)+; Anal. calcd for C19HZZN3OI: C, 52.42; H, 5.09; N, 9.65. Found: C, 52.30; H, 5.14; N, 9.29.
Example 272 2-(4-fluoro-4-phenylpiperidin-1 yl)-N-(3-meth~phenyl)acetamide Example 272A
tent-but<rl 4-hydrox~phenylpiperidine-1-carbox, late The procedure described in Example 234A was followed, substituting phenyllithium for 2-thienyllithium to provide the title compound as a pale yellow oil (6 g, 87%). 'H NMR
(300 MHz, CDCl3) 8 1.5 (s, 9H), 1.65-1.71 (m, 2H), 1.9-1.98 (M, 1H), 2.42 (t, 1H, J=6 Hz), 3.22-3.25 (m, 1H), 3.43 (d, 2H, J=3 Hz), 3.7 (t, 1H, J=6 Hz), 7.30-7.39 (m, 2H), 7.43-7.48 (m, 2H), 7.58-7.60 (m 1H); MS (DCI/NH3) m/e 278 (M+H)+.
Example 272B
tent-butyl 4-fluoro-4-phenylpiperidine-1-carboxylate To a solution of (diethylamino)sulfur trifluoride (0.9 mL, 7.2 rnmol) in dichloromethane at -70 °C was added the product from Example 272A (1 g, 3.6 mmol) as a solution in dichloromethane (10 mL). After 1 hour, the mixture was slowly warmed to -10 °C
and stirred for 2 hours. The reaction was quenched with water (20 mL) and saturated potassium carbonate (7 mL) followed by extraction with diethyl ether. The organic phases were combined, washed with brine, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (30% ethyl acetate:hexanes) to afford the title compound as a yellow oil (200 mg, 25%).
'H NMR (300 MHz, CDC13) S 1.5 (s, 9H), 1.9-1.96 (m, 2H), 2.0-2.10 (m, 2H), 3.18-3.26 (m, 2H), 3.5-3.62 (m, 2H), 7.3 (m, 1H), 7.35-7.4 (m, 4H); MS (DCI/NH3) m/e 280 (M+H)+.

Example 272C
4-fluoro-4-phenylpi ep ridine The procedure described in Example 166B was followed, substituting the product from Example 272B for the product from Example 166A to provide the title compound as a yellow oily residue (200 mg). IH NMR (300 MHz, CDCl3) 8 2.20-2.30 (m, 2H), 2.45-2.55 (m, 2H), 3.10 (t, 2H, J=6 Hz), 3.50-3.55 (m, 1H), 7.30-7.40 (m, 4H); MS (DCI/N
3) m/e 180 (M+H)+.
Example 272D
2-(4-fluoro-4-phenylpiperidin-1-yl)-N-(3-methvlphen~ acetarnide The procedure described in Example 33C was followed, substituting the product from Example 2720 for the product from Example 33B to provide the title compound as a yellow oil (155 mg, 42%). 1H NMR (300 MHz, CDCl3) b 1.48 (br s, 1H), 2.35 (m, 4H), 2.65 (m, 2H), 2.85 (t, 2H, J=6 Hz), 3.22 (s, 2H), 3.38 (m, 2H), 6.85 (m, 1H), 7.2 (m, 1H), 7.35-7.45 (m, 7H), 9.2 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+; Anal. calcd for C2oH23FN2O: C, 73.59; H, 7.10; N, 8.58. Found: C, 73.70; H, 7.19; N, 8.80.
Example 273 2-L~5-hydroxypyridin-2-yl)piperidin-1-~]-N-(3-methylphenyl)acetamide Example 273A
5~(benz~loxy)-2-bromopyridine 6-Chloropyridin-3-of (6 g, 46 mmol) in N,N-dimethylformamide (50 mL) was treated with benzylbromide (5.5 mL, 46 mmol) and potassium carbonate (12.8 mmol) and the reaction mixture heated to 40 °C for 18 hours. The reaction was cooled to room temperature, poured into brine (200 mL) and extracted with ethyl acetate (200 mL). The organic layer was washed with brine (3 x 100 mL), dried over magnesium sulfate, filtered, and concentrated under reduced pressure to give 5-benzyloxy-2-chloropyridine. This crude product was dissolved in propionitrile (50 mL) and treated with trimethylsilylbromide (12.36 mL, 92 mmol) and the reaction mixture was heated at 100 °C for 113 hours. The reaction mixture was cooled to room temperature and poured into 2.0 M sodium hydroxide solution to which 50 g of ice had been added. The aqueous phase was extracted with diethyl ether, (3 x 75 mL). The organic layers were combined and washed with water (2 x 100 mL) and brine (75 mL), dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The crude residue (light brown oil) was purified by flash column chromatography on silica gel using 8% ethyl acetate:hexanes as eluent to give 4.72 g of the title compound as a light yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 5.19 (s, 2H), 7.42 (m, 6H), 7.57 (d, J=6 Hz, 1H), 8.19 (d, J=3 Hz, 1H), MS (DCI/NH3) m/e 365 (M+H)+.
Example 273B
tert-butyl 5-(benzyloxy)-3',6'-dihydro-2,4'-bipyridine-1'(2'H)-carboxylate The product from Example 273A (0.33g, 17.7 mrnol) in diethyl ether (10 mL) was added rapidly to a solution of 2.SM n-butyllithium (0.98 mL, 1.56 mmol) in diethyl ether (8 mL) at -78 °C. The resulting brown solution was stirred at -78 °C for 10 minutes. To this was added O.SM zinc chloride solution (2.75 mL, 1.37 mmol) and the reaction mixture was warmed to 0 °C and stirred at 0 °C for 15 minutes. To this reaction mixture was added 4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tent-butyl ester (Bursavich, M. G.; et al. Org. Lett. 2001, 3, 2317, 0.5 g, 1.5 mmol) and tetrakis(triphenylphosphine)palladium(0) (175 mg, 0.15 mmol). The reaction was heated to 60 °C for 4 hours. The mixture was cooled to room temperature and the solvent removed under reduced pressure. The residue was partitioned between ethyl acetate (50 mL) and 1N
sodium hydroxide (50 mL). The inorganic salts were filtered, and the filtrate washed with brine (50 mL), dried (magnesium sulfate) and concentrated on the rotary evaporator to give brown oil. The crude compound was purified by flash column chromatography on silica gel using 80% hexanes: ethyl acetate as eluent to give 0.209 g (47% yield) of desired product as white solid. IH NMR (300 MHz, DMSO-d6) S 1.42 (s, 9H), 2.52 (m, 2H), 3.51 (t, J=6 Hz, 2H), 4.01 (m, 2H), 5.19 (s, 2H), 6.52 (m, 1H), 7.41 (m, 7H), 8.31 (d, J=1.5 Hz, 1H), MS
(DCI/NH3) m/e 367 (M+H)+.
Example 273C
5-(bexizyloxy)-1',2',3',6'-tetrahydro-2,4'-bip 'rune The product from Example 273B (200 mg, 0.54 mmol) in dichloromethane (8 mL) was cooled to 0 °C and treated with trifluoroacetic acid (0.35 mL, 4.3 mmol) for 2 hours;

warmed to room temperature for 2 hours and the solvent removed by rotary evaporator.
Toluene was added to the residue and then removed under reduced pressure (2 x 50 mL) to give desired product as colorless oil. 1H NMR (300 MHz, DMSO-d6) & 2.72 (m, 2H), 3.32 (m, 2H), 3.79 (m, 2H), 5.20 (s, 2H), 6.55 (m, 1H), 7.41 (m, 6H), 7.59 (d, J=9 Hz, 1H), 8.34 (d, J=1.5 Hz, 1H), 8.82 (s, 1H); MS (DCI/NH3) m/e 267 (M+H)+.
Example 273D
2-f 5-(benzyloxy)-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl]-N-(3-meth~~phen~
acetamide A mixture of the product from Example 273C (175 mg, 0.46 mmol), the product from Example lA (125 mg, 0.54 mmol) and potassium carbonate (164 mg, 1.1 mmol) in N,N-dimethylformamide (8 mL) was stirred at room temperature for 18 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (30 mL). The organic layer was washed with brine (2 x 30 mL) and dried over magnesium sulfate, filtered and concentrated under reduced pressure and purified by flash column chromatography using 70% hexanes:ethyl acetate to give the desired product 105 mg (55% yield). 'H
NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 2.60 (m, 2H), 2.76 (t, J=4.5 Hz, 2H), 3.27 (m, 2H), 3.97 (d, J=6 Hz, 2H), 5.19 (s, 2H), 6.54 (m, 1H), 6.87 (m, 2H), 7.18 (t, J=6 Hz, 2H), 7.42 (m, 7H), 8.31 (d, J=3 Hz, 1H), 9.52 (s, O.SH), 9.64 (s, O.SH); MS (DCI/NH3) m/e 414 (M+H)+.
Example 273E
2-[4-(5-hydroxypyridin-2-yl)piperidin-1-yl]-N-(3-meth~phenyllacetamide The product from Example 273D (105 mg, 0.2 mmol) in methanol (50 mL) was treated with 10%Pd/C (58 mg) at 60 psi for 16 hours. The catalyst was filtered and the filtrate was concentrated under reduced pressure to give pale yellow foamy solid. This crude product was purified by flash column chromatography on silica gel using 4%
ethanol:ethyl acetate to give the title compound 50 mg (64% yield). IH NMR (300 MHz, CDCl3) 8 1.93 (m, 4H), 2.31 (s, 3H), 2.41 (m, 2H), 2.71 (m, 1H), 3.04 (m, 2H), 3.16 (s, 2H), 6.92 (d, J=7.5 Hz, 1 H), ), 7.20 (m, 4H), 7.40 (d, J=9 Hz, 2H), 8.26 (m, 1 H), 9.24 (br s, 1 H); MS (DCI/NII3) m/e 326 (M+H)+; Anal. calcd for C19H23N3O2: C, 70.13; H, 7.12; N, 12.91.
Found: C, 69.97;
H, 7.17; N, 12.68.
Example 274 N-(5-fluoro-1,3-benzothiazol-2-yl)-2-[4-(3-methoxyphenv~n~erazin-1-Yl]acetamide The procedure described in Example 247B was followed, substituting 2-bromo-N-(5-fluorobenzothiazol-2-yl)acetamide (Maybridge) for the product from Example 247A and substituting 1-(2-methoxyphenyl)piperazine for 1-(2-cyanopyridyl)piperazine to provide the title compound (62% yield) as an oil. 1H NMR (300 MHz, CD30D); 8 2.77-2.86 (m, 4H), 3.10-3.19 (m, 4H), 3.32 (s, 2H), 3.86 (s, 3H), 6.86-7.06 (m, 3H), 7.08-7.25 (m, 2H), 7.65 (dd, J=3.0, 6.0 Hz, 1.OH), 7.70-7.76 (m, 1H); MS (DCI/NH3) m/e 401; Anal. calcd for CZOHa1N402SF : C, 59.98; H, 5.29; N, 14.12. Found: C, 60.12; H, 5.58; N, 14.12.
Example 275 2-[4-(2-methoxyphenyl)piperazin-1-yl]-~1-methyl-1H-benzimidazol-2-vl)acetamide The procedure described in Example 247B was followed, substituting 2-chloro-N-(1-methyl-1H-benzoimidazol-2-yl)acetamide (Caroti, P.; et al. Farmaco 1989, 44, 227) for the product from Example 247A and substituting 1-(2-methoxyphenyl)piperazine for 1-(2-cyanopyridyl)piperazine to provide the title compound (44% yield) as a yellow oil. 1H NMR
(300 MHz, CD30D); 8 2.81-2.84 (m, 4H), 3.05-3.10 (m, 4H), 3.38 (s, 2H), 3.75 (s, 3H), 3.85 (s, 3H), 6.85-7.05 (m, 4H), 7.22-7.37 (m, 2H), 7.42-7.58 (m, 2H); MS (DCI/NH3) m/e 380;
Anal. calcd for C~1H25N502: C, 65.82; H, 6.61; N, 17.87. Found: C, 65.69; H, 6.69; N, 18.24.
Example 276 N-(3-methylphen~l-2-[4-(3-methylthien-2-yl)-3,6-dihydropyridin-1 (2H1-yl]acetamide Example 276A
tert-butyl 4-(3-methylthien-2-yl)-3,6-dihydropyridine-1 (2H)-carboxylate The procedure described in Example 143A was followed, substituting 3-methyl-2-thienylzinc bromide for 3-methyl-2-pyridylzinc bromide to provide the title compound as a yellow oil (2.67 g, 54%). IH NMR (300 MHz, CDCl3) 8 1.5 (s, 9H), 1.6 (s, 3H), 2.5 (m, 2H), 3.6 (t, 2H, J=6 Hz), 4.03 (m, 2H), 5.8 (m, 1 H), 6.8 (d, 1 H, J=6 Hz), 7.15 (d, 1 H, J=6 Hz); MS
(DCI/NH3) m/e 280 (M+H)+.
Example 276B
4-(3-methylthien-2-~)-1,2,3,6-tetrahydropyridine The procedure described in Example 166B was followed, substituting the product from Example 276A for the product from Example 166A to provide the title compound as a yellow oil (450 mg, 46%). 1H NMR (300 MHz, CDC13) 8 2.22 (s, 3H), 2.78-2.80 (m, 2H), 3.44-3.47 (m, 2H), 3.85-3.90 (m, 2H), 5.79-5.81 (m, 1H), 6.83 (d, 1H, J=6 Hz), 7.18 (d, 1H, J=6 Hz), 9.6 (br s, 1H); MS (DCI/NH3) m/e 180 (M+H)~.
Example 276C
N-(3-methylphenyl)-2-f4-(3-methvlthien-2-yl~-3 6-dih~pyridin-1(2H)-~]acetamide The procedure described in Example 33C was followed, substituting the product from Example 272C for the product from Example 33B to provide the title compound as a colorless oil (370 mg, 49%). 1H NMR (300 MHz, CDCl3) 8 2.30 (s, 3H), 2.35 (s, 3H), 2.61 (m, 2H), 2.83 (t, 2H, J=6 Hz), 3.25 (s, 2H), 3.38 (m, 2H), 5.82 (m, 1H), 6.82 (d, 1H, J=6 Hz), 6.95 (d, 1 H, J=9 Hz), 7.10 (d, 1 H, J=6 Hz), 7.20 (d, 1 H, J=9 Hz), 7.40 (m, 2H), 9.15 (br s, 1H); MS (DCI/NH3) m/e 327 (M+H)+.
Maleate salt: Anal. calcd for C19HZ~NZOS~1.O C4Ii4O4: C, 62.42; H, 5.92; N, 6.33; Found: C, 62.23, H, 5.96, N, 6.18.
Example 277 2-( 1- f 2-f (3 , 5-dichlorophenyl)amino]-2-oxoethyl ~ piperidin-4-y~pyridinium N-oxide The procedure described in Example 225B was followed, substituting 2-bromo-N-(3,5-dichlorophenyl)acetamide (Maybridge) for the product from Example 225A to provide the title compound. Isolated as an acetate salt (36 mg, 34%). 1H NMR (300 MHz, DMSO-db) 8 1.71 (m, 2H), 1.92 (m, 2H), 2.30 (m, 2H), 2.98 (m, 2H), 3.19 (s, 2H), 3.25 (m, 1H), 7.30 (m, 2H), 7.42 (m, 1H), 7.80 (d, J=3 Hz, 2H), 8.26 (d, J=4.5, 1H), 10.05 (s, 1H); MS
(DCI/NH3) m/e 365 (M+H-16)+; 381 (M+H)+; Anal. calcd for Ci8H19C12N3O2~1.O
CZH4O2: C, 54.55; H, 5.26; N, 9.54. Found: C, 54.85; H, 5.02; N, 10.23.
Example 278 2-(1-~2-f(2,3-dichlorophen~lamino]-2-oxoethyl)piperidin-4 yl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting 2-bromo-N-(2,3-dichlorophenyl)acetamide for the product from Example 225A to provide the title compound. Isolated as an acetate salt (25 mg, 22%). 1H NMR (300 MHz, DMSO-d6) 8 1.71 (m, 2H), 1.99 (m, 2H), 2.43 (m, 2H), 3.03 (m, 2H), 3.25 (s, 2H), 3.35 (m, 1H), 7.38 (m, SH), 8.26 (dd, J=4.5, 1.5, 2H), 10.15 (s, 1H); MS (DCI/NH3) mle 365 (M+H-16)+; 381 (M+IT)+;
Anal. calcd for CI8H19C12N3O2~1.O C2Ha.Oa: C, 54.55; H, 5.26; N, 9.54. Found:
C, 55.62; H, 4.92; N, 10.50.
Example 279 2-(1-~2-[(2-methoxx-6-methy lphenyl)amino]-2-oxoethyl~piperidin-4-yl)pyridinium N-oxide A solution of 2-methoxy-6-rnethylaniline (4 equivalents) in dichloromethane (0.2 M) was treated with pyridine (8 equivalents) followed by bromoacetyl chloride (1 equivalent).
After 3 hours at room temperature, the mixture was treated with sodium carbonate (12 equivalents) and the product from Example 119A (3 equivalents) in dioxane:water (2:1). The heterogeneous mixture was heated to 40 °C overnight. The reaction mixture was cooled to room temperature, concentrated under reduced pressure and the residue triturated with 5%
methanol:dichloromethane. The solid inorganic material was filtered and the filtrated concentrated and purified by HPLC. Isolated as an acetate salt. (45 mg, 44%).
'H NMR
(300 MHz, DMSO-d6) & 1.71 (m, 2H), 1.99 (m, 4H), 2.15 (m, 3H), 2.30 (m, 2H), 3.10 (m, 1H), 3.15 (s, 2H), 3.75 (s, 3H), 6.86 (dd, J=9, 1.5 Hz, 2H), 7.16 (t, J=9 Hz, 1H), 7.30 (m, 2H), 7.45 (m, 1H), 8.26 (dd, J=4.5, 1.5 Hz, 1H), 8.95 (s, 1H); MS (DCI/NH3) m/e 340 (M+H-16)+;
356 (M+H)+.
Example 280 2-f 1-[2-(1 1'-biphenyl-3-ylamino)-2-oxoeth~ll~peridin-4-yl~pyridinium N-oxide Example 280A
N-1,1'-binhenyl-3-yl-2-chloroacetamide The procedure described in Example 22A was followed, substituting biphenyl-3-ylamine for 3,4,5-trimethoxyaniline to provide the title compound.
MS (DCI) m/e 346 (M+H)+.
Example 280B
2-f 1-[2-(1 1'-b~henyl-3-ylamino~-2-oxoethyllpiperidin-4-yl~pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 280A for the product from Example 225A to provide the title compound as an amorphous solid. (38.5 mg, 26%). IH NMR (300 MHz, CDC13) ~ 1.73 (m, 2H) 2.09 (m, 2H) 2.55 (m, 2H) 3.08 (m, 2H) 3.22 (s, 2H) 3.48 (m, 1H) 7.19 (m, 4H) 7.39 (m, 3H) 7.61 (m, SH) 8.28 (d, J=6.10 Hz, 1H) 9.21 (s, 1H); MS (ESI) m/e 390 (M+H)+; Anal. calcd for CzaHasNsCz: C, 74.39; H, 6.50; N, 10.80. Found: C, 73.87; H, 7.13; N, 10.58.
Example 281 2-( 1- f 2-[(3-eth~phenyl)amino)-2-oxoethyl}piperidin-4-~)pyridinium N-oxide Example 281A
2-chloro-N-(3-ethylphenyl)acetamide The procedure described in Example 22A was followed, substituting 3-' ethylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (8.0 g, 100%).
1H NMR (300 MHz, CDC13) 8 1.25 (m, 3H), 2.68 (m, 2H), 4.35 (m, 2H), 7.02 (d, J=5.4 Hz, 1H), 7.40 (m, 3H), 8.18 (br s, 1H); MS (DCI/NH3) m/e 198 (M+H)+.
Example 281B
2-(1-~2-[(3-eth~lphenyl~amino)-2-oxoethyl}piperidin-4-~~pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 281A for the product from Example 225A to provide the title compound as an amorphous solid. (38 mg, 26%). 1H NMR (300 MHz, CDC13) 8 1.24 (t, J=7.6 Hz, 3H), 1.70 (m, 8H), 2.64 (m, 3H), 4.26 (s, 2H), 6.91 (s, 1H), 7.25 (m, 3H), 7.42 (m, 2H), 7.60 (m, 1H), 8.28 (d, J=6.1 Hz, 1H); MS (ESI) m/e 340 (M+H)+.
Example 282 2-~1-[2-(2 3-dihydro-1H-inden-5-ylamino)-2-oxoethyl]piperidin-4-~)pyridiniumN-oxide A solution of 5-aminoindan (190 mg, 1.43 mmol) in dichloromethane (7 mL) was treated with pyridine (300 ~,L, 3.71 mmol) followed by bromoacetyl chloride (30 wL, 0.36 mmol). After 3 hours at room temperature, the mixture was treated with sodium carbonate (450 mg, 4.25 mmol) and the product from Example 119A (225 mg, 1.05 mmol) in dioxane:water (2:1, 7 mL). The heterogeneous mixture was heated to 40 °C overnight. The mixture was cooled and diluted with dichloromethane. The potassium carbonate was removed by filtration and the filtrate was concentrated under reduced pressure. The residue was diluted 1:10 with 20% aqueous ethanol and loaded on a strongly acidic ion exchange resin (Biorad AG SOW-X2). The resin was washed to neutral with water, and the product was eluted with 10 mL of 5% ammonium hydroxide in 20% aqueous ethanol. The solution was lyophilized to provide (50% yield) of the title compound as a white solid.
IH NMR (300 MHz, DMSO-d6) b 1.69 (ddd, J=12.3, 12.3, 12.1, 3.7 Hz, 2H), 1.91 (d, J=11.5 Hz, 2H), 2.00 (dq, J=7.6, 7.4 Hz, 2H), 2.30 (t, J=11.5 Hz, 2H), 2.81 (q, J=7.8 Hz, 4H), 2.99 (d, J=11.2 Hz, 2H), 3.13 (s, 2H), 3.28 (m, 1H), 7.14 (d, J=8.1 Hz, 1H), 7.33 (m, 3H), 7.45 (dd, J=7.5, 2.4 Hz, 1H), 7.55 (s, 1H), 8.25 (dd, J=6.3, 1.5 Hz, 1H), 9.57 (s, 1H); MS
(DCI/NH3) mle 352 (M+H)+; Anal. calcd for CZIHzsNsOa~0.2 K2C03~0.4 H20: C, 65.92; H, 6.73; N, 10.88.
Found: C, 66.07; H, 6.65; N, 10.75.
Example 283 2 11 f2 oxo-2-(5 6 7 8-tetrah~dronaphthalen-1-ylaminolethyllniperidin-4-yllpyridinium N-oxide The procedure described in Example 282 was followed, substituting 5,6,7,8-tetrahydronaphthalen-1-ylamine for 5-aminoindan to provide the title compound (70% yield) as a white solid. 1H NMR (300 MHz, DMSO-db) 8 1.71 (m, 6H), 1.96 (d, J=11.5 Hz, 2H), 2.37 (t, J=10.7 Hz, 2H), 2.61 (t, J=6.1 Hz, 2H), 2.72 (t, J=5.9 Hz, 2H), 3.04 (d, J=11.2 Hz, 2H), 3.16 (s, 2H), 3.29 (m, 1H), 6.87 (d, J=7.8 Hz, 1H), 7.07 (t, J=7.8 Hz, 1H), 7.33 (m, 2H), 7.42 (dd, J=8.8, 2.4 Hz, 1H), 7.61 (d, J=7.8 Hz, 1H), 8.27 (d, J=6.1 Hz, 1H), 9.34 (s, 1H); MS
(DCI/NH3) m/e 366 (M+H)+; Anal. calcd for C22H2~N3O2'O.3 I~2CO3~1.O HzO: C, 63.03; H, 6.88; N, 9.89. Found: C, 62.82; H, 6.79; N, 9.71.
Example 284 2 (1 f2 [(3 isopropoxyphenyl amino]-2-oxoeth~]piperidin-4-yllpyridiniumN-oxide The procedure described in Example 279 was followed, substituting 3-isopropoxyaniline for 2-methoxy-6-methylaniline to provide the title compound.
(74 mg, 52.8%). 1H NMR (300 MHz, DMSO-d6) 8 1.26 (d, J=6 Hz, 6H), 1.70 (m, 2H), 1.91 (m, 2H), 2.30 (m, 2H), 3.01 (m, 2H), 3.15 (m, 1H), 3.31 (m, 1H), 4.55 (m, 1H), 6.62 (m, 1H), 7.16 (m, 2H), 7.30 (m, 3H), 7.45 (m, 1H), 8.15 (dd, J=6, 1.5 Hz, 1H), 9.65 (s, 1H); MS
(DCI/NH3) m/e 354 (M+H-16)+; 370 (M+H)+; Anal. calcd for CZ1H2~N303~0.4 H20: C, 66.96; H, 7.44; N, 11.16. Found: C, 66.69; H, 7.56; N, 10.80.
Example 285 2-(1-f2-[(3 5-dimeth~phenyl)amino]-2-oxoeth~~piperidin-4-yl)pyridiniumN-oxide Example 285A
2-chloro-N-(3,5-dimethylphenyllacetamide The procedure described in Example 22A was followed, substituting 3,5-dimethylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (6.38 g, 79%). 'H NMR (300 MHz, CDCl3) 8 2.34 (s, 6H), 4.17 (s, 2H), 6.82 (s, 1H), 7.17 (s, 1H), 7.26 (s, 1H), 8.11 (s, 1H); MS (ESI) m/e 198 (M+H)+.
Example 285B
2-(1- ~2-[(3,5-dimethylphenyl amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 285A for the product from Example 225A to provide the title compound as an amorphous solid. (38 mg, 26%). 'H NMR (300 MHz, CDC13) 8 1.88 (d, J=3.39 Hz, 2H), 2.05 (d, J=12.55 Hz, 2H), 2.28 (s, 6H), 2.43 (m, 2H), 3.11 (m, 3H), 3.21 (s, 2H), 6.78 (s, 1H), 7.21 (s, 2H), 7.41 (m, 2H), 7.60 (d, J=4.07 Hz, 1H), 8.34 (d, J=6.44 Hz, 1H);
MS (ESI) m/e 340 (M+H)+.
Example 286 2-(1-f2-[(4-bromo-2-meth~phenyl)amino]-2-oxoethyl~piperidin-4-vllpyridinium N-oxide The procedure described in Example 282 was followed, substituting 4-bromo-2 methylphenylamine for 5-aminoindan to provide the title compound (60% yield) as a white solid. 'H NMR (300 MHz, DMSO-d6) S 1.67 (ddd, J=24.6, 12.2, 3.6 Hz, 2H), 1.96 (d, J=12.5 Hz, 2H), 2.25 (s, 3H), 2.37 (t, J=11.7 Hz, 2H), 3.04 (d, J=11.5 Hz, 2H), 3.18 (s, 2H), 3.26 (m, 1H), 7.37 (m, SH), 7.76 (d, J=8.8 Hz, 1H), 8.26 (m, 1H), 9.46 (s, 1H); MS
(DCI/NH3) m/e 404/406 (M+H)+; Anal. calcd for C19HZZBrN3O2~O.l KZCO3: C, 54.87; H, 5.30; N, 10.05.
Found: C, 54.72; H, 5.38; N, 9.73.

Exam lp a 287 2-[1-(2-oxo-2~f3-(trifluoromethoxy)phenyl]amino ethyl)~iperidin-4-~]pyridiniumN-oxide The procedure described in Example 282 was followed, substituting 3-trifluoromethoxyphenylamine for 5-aminoindan to provide the title compound (77% yield) as a white solid. 'H NMR (300 MHz, DMSO-d6) 8 1.68 (q, J=11.9 Hz, 1H), 1.69 (q, J=12.4 Hz, 1H), 1.91 (d, J=11.9 Hz, 2H), 2.31 (t, J=11.5 Hz, 2H), 3.00 (d, J=11.5 Hz, 2H), 3.19 (s, 2H), 3.28 (m, 1H), 7.05 (m, J=8.3, 2.4, 1.0, 0.9 Hz, 1H), 7.31 (m, 2H), 7.44 (m, 2H), 7.62 (ddd, J=8.2, 2.0, 1.0 Hz, 1H), 7.85 (s, 1H), 8.26 (d, J=5.8 Hz, 1H), 10.01 (s, 1H);
MS (DCI/NH3) m/e 396 (M+H)+; Anal. calcd for C19H2oF3NsO3~0.4 H2O: C, 56.69; H, 5.21; N, 10.44.
Found: C, 56.71; H, 5.04; N, 10.19.
Example 288 2-(1 ~2-[(5-methyl-2-nitrophenyl)amino]-2-oxoethyl)piperidin-4-yl)pyridinium N-oxide The procedure described in Example 282 was followed, substituting 2-methyl-5 nitrophenylamine for 5-aminoindan to provide the title compound (75% yield) as a yellow solid. IH NMR (300 MHz, CDCl3) b 1.70 (q, J=11.9 Hz, 1H), 1.71 (q, J=12.4 Hz, 1H), 2.21 (d, J=13.2 Hz, 2H), 2.40 (s, 3H), 2.62 (t, J=11.9 Hz, 2H), 3.11 (d, J=11.9 Hz, 2H), 3.28 (s, 2H), 3.55 (tt, J=12.0, 3.4 Hz, 1H), 7.19 (ddd, J=12.9, 6.4, 2.7 Hz, 1H), 7.31 (rn, 2H), 7.91 (dd, J=8.1, 2.4 Hz, 1H), 8.28 (d, J=6.4 Hz, 1H), 9.08 (d, J=2.4 Hz, 1H), 9.55 (s, 1H); MS
(DCI/NH3) m/e 371 (M+H)+; Anal. calcd for C~9HZZN404~l.l H20: C, 58.48; H, 6.25; N, 14.36. Found: C, 58.44; H, 6.20; N, 14.30.
Example 289 2-(1-f2-[(2,6-dimeth~phenyl)amino]-2-oxoeth~}piperidin-4-yl)~yridinium N-oxide Example 289A
2-chloro-N-(2,6-dimethylphenyl)acetamide The procedure described in Example 22A was followed, substituting 2,6-dimethylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (7.21 g, 89%) 'H NMR (300 MHz, CDCl3) S 2.25 (s, 6H), 4.26 (s, 2H), 6.65 (t, J=7.46 Hz, 1H), 6.95 (d, J=7.46 Hz, 2H), 7.84 (s, 3H); MS (ESI) m/e 198 (M+H)+.

Example 289B
2-(1-f2-[(2 6-dimeth~phenyl)amino]-2-oxoethyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 289A for the product from Example 225A to provide the title compound as an amorphous solid. (27 rng, 8%). 1H NMR (300 MHz, CD30D) 8 1.88 (dd, J=12.4, 3.6 Hz, 2H), 2.07 (m, 2H), 2.22 (s, 6H), 2.50 (m, 2H), 3.11 (m, 3H) 3.21 (s, 2H), 7.10 (m, 1H), 7.42 (m, 2H), 7.58 (m, 1H), 7.86 (m, 1H), 7.93 (d, J=2.0 Hz, 1H), 8.34 (d, J=6.4 Hz; 1H); MS
(ESI) m/e 354 (M+H)+.
Example 290 ~1-~2-[(2,6-dichloro-3-methylphenyl)amino]-2-oxoethyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 282 was followed, substituting 2,6-dichloro-methylphenylamine for 5-aminoindan to provide the title compound (64% yield) as an off white solid. 1H NMR (300 MHz, CDC13) 8 1.72 (q, J=12.4 Hz, 1H), 1.73 (q, J=12.3 Hz, 1H), 2.17 (d, J=12.9 Hz, 2H), 2.39 (s, 3H), 2.55 (t, J=11.9 Hz, 2H), 3.25 (d, J=12.2 Hz, 2H), 3.27 (s, 2H), 3.58 (t, J=12.2, 3.3 Hz, 1H), 6.57 (d, J=8.1 Hz, 1H), 7.17 (m, 4H), 8.27 (d, J=6.4 Hz, 1H), 9.03 (s, 1H); MS (DCI/NH3) m/e 394 (M+H)+; Anal. calcd for C19H2iC12NsOz~1.3 H20:
C, 54.63; H, 5.69; N, 10.06. Found: C, 54.51; H, 5.13; N, 9.70.
Example 291 2-f 1-I2-(1 3-benzodioxol-5-ylamino)-2-oxoeth~]piperidin-4-yl)pyridinium N-oxide Example 291A
N-1,3-benzodioxol-5-yl-2-chloroacetamide The procedure described in Example 33A was followed, substituting benzo[1,3]dioxol-5-ylamine for 3-methylaniline to provide the title compound (92% yield) as a brown solid. 1H NMR (300 MHz, CDC13) S 4.2 (s, 2H), 5.98 (s, 2H), 6.78 (d, 1H, J=9 Hz,), 6.83 (dd 1H, J=9 Hz, 3 Hz), 7.22 (d, 1H, J=3 Hz,), 8.10 (br s, 1H); MS
(DCI/NH3) m/e 213 (M+H)+.
Example 291B

2-f 1-[2-(1,3-benzodioxol-5-ylamino)-2-oxoethYl]piperidin-4-'rl~Ryridinium N-oxide The procedure described in Example 225B was followed, substituting the product in Example 291A for the product from Example 225A to provide the title compound as a white solid (25 rng, 21%). IH NMR (300 MHz, CDC13) 8 1.65-1.7 (m, 2H), 2.15-2.19 (m, 2H), 2.45 (t, 2H, J=12 Hz), 3.05 (m, 2H), 3.10-3.15 (m, 2H), 3.45 (m, 1H), 5.9 (s, 2H), 6.76 (d, 1H, J=9 Hz), 6.75-6.85 (m, 1H), 7.12-7.18 (m, 1H), 7.32-7.38 (m, 3H), 8.25 (d, 1H, J=6 Hz,), 9.08 (br s, 1H); MS (DCI/NH3) m/e 356 (M+H)+; Anal. calcd for C19H21N3O4~0~S
HaO: C, 62.63; H, 6.09; N, 11.53. Found: C, 63.01; H, 5.96; N, 11.12.
Example 292 2-[1~2- f j3-(meth l~~phen~]amino}-2-oxoeth~)piperidin-4-~]pyridinium N-oxide The procedure described in Example 225B was followed, substituting 2-chloro-N-(3-methylsulfanylphenyl)acetamide for the product from Example 225A to provide the title compound as a pale yellow oil (17 mg, 21%). 1H NMR (300 MHz, DMSO-d6) 8 1.60-1.78 (m, 2H), 1.63-1.95 (m, 2H), 2.12-2.18 (m, 2H), 2.70 (s, 3H), 2.9-3.12 (m, 2H), 3.22-3.30 (m, 3 H), 6.9-7.0 (m, 1 H), 7.2-7.3 (m, 2H), 7.3-7. 3 5 (m, 2H), 7. 62 (t, 1 H, J=3 Hz), 7. 8 (s, 1 H), 8.23-8.27 (m, 1H), 9.75 (s, 1H); MS (DCI/NH3) m/e 358 (M+H)+.
Example 293 2-(1-f2-[(5-chloro-2-meth~phenyl)amino]'-2-oxoeth~~piperidin-4-yl)pyridinium N-oxide Example 293A
2-chloro-N-(5-chloro-2-methylphenyl)acetamide The procedure described in Example 33A was followed, substituting 5-chloro-2-methylphenylamine for 3-methylaniline to provide the title compound (1.7 g, 55%) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 2.0 (s, 3H), 5.10 (s, 2H), 6.42 (dd, 1H, J=9, 3 Hz), 6.60 (d, 1H, J=3 Hz), 6.90 (d, 1H, J=9 Hz); MS (DCI/NH3) m/e 219 (M+H)+.
Example 293B
~1-~2-f(5-chloro-2-methylphenyl)aminol-2-oxoethyl~p~eridin-4-~)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 293A for the product from Example 225A to provide the title compound as a brown powder (15 mg, 13%). 1H NMR (300 MHz, CDC13) 8 1.68-1.73 (m, 2H), 2.15-2.22 (m, 2H), 2.25 (s, 3H), 2.6 (t, 2H, J=12 Hz), 3.05-3.18 (m, 2H), 3.22 (s, 2H), 3.50-3.60 (rn, 1H), 7.05 (dd, 1H, J=6 Hz, 3 Hz), 7.10 (d, 1H, 9 Hz,), 7.18-7.2 (m, 1H), 7.22-7.28 (m, 2H), 8.22 (d, 2H, J=6 Hz), 9.38 (br s, 1H); MS (DCI/NH3) m/e 360 (M+H)+; Anal.
calcd for C19H22C1N3Oa~O.S H2O: C, 61.87; H, 6.28; N, 11.39. Found: C, 61.76; H, 6.22;
N, 11.10.
Example 294 2-(1-f2-[(2,5-dimethoxyphenyl amino]-2-oxoeth~~piperidin-4-~~pyridinium N-oxide Example 294A
2-chloro-N-(2, 5-dimethoxyphen~)acetamide The procedure described in Example 33A was followed, substituting 2-chloro-N-(2,5-dimethoxyphenyl)aniline for 3-methylaniline to provide the title compound (1.6 g, 55%
yield) as a brown solid. 1H NMR (300 MHz, CDC13) S 3.73 (s, 3H), 3.8 (s, 3H), 4.4 (s, 2H), 6.33 (dd, 1H, J=9, 3 Hz), 6.45 (d, 1H, J=3 Hz), 6.65 (dd, 1H, J=9, 3 Hz); MS
(DCI/NH3) m/e 230 (M+H)+.
Example 294B
2-(1-f2-[(2 5-dimethoxvphenyl)amino]-2-oxoeth~~piperidin-4-~)pyridiniumN-oxide The procedure described in Example 225B was followed, substituting the product from Example 294A for the product from Example 225A to provide the title compound as a pale yellow oil (27 mg, 77%). 'H NMR (300 MHz, CDCl3) 8 1.40-1.51 (m, 2H), 1.65-1.80 (m, 2H), 2.15-2.20 (m, 2H), 2.50-2.60 (m, 2H), 3.10-3.18 (m, 2H), 3.50-3.60 (m, 1H), 3.80 (s, 3H), 3.85 (s, 3H), 6.60 (dd, 1H, J=6 Hz, 3 Hz), 6.80 (d, 1H, J=9 Hz), 7.20-7.25 (m, 1H), 7.30-7.39 (m, 2H), 8.15 (d, 1H, J=3 Hz,), 8.38 (d, 1H, J=6 Hz), 9.8 (br s, 1H); MS (DCI/NH3) m/e 372 (M+H)+.
Maleate salt: Anal. calcd for C2oH2sN304~2.0 C4H404~ 1.3 H20: C, 53.64; H, 5.72; N, 6.70.
Found: C, 53.26; H, 5.95; N, 6.45.
Example 295 2-~1-~2-[(3,5-dimethoxyphenvl)amino-2-oxoethyl~piperidin-4-yl)pyridinium N-oxide Example 295A
2-chloro-N-(3,5-dimethoxyphenyllacetamide The procedure described in Example 33A was followed, substituting 2-chloro-N-(3,5-dimethoxyphenyl)aniline for 3-methylaniline to provide the title compound (1.8 g, 60%
yield) as a white solid. 1H NMR (300 MHz, CDC13) S 3.80 (s, 6H), 4.20 (s, 2H), 6.15 (t, 1H, J=3 Hz), 6.78 (d, 2H, J=3 Hz), 8.15 (br s, 1H); MS (DCI/NH3) m/e 230 (M+H)+.
Example 295B
2-(1-f2-[(3,5-dimethoxyphenyl;lamino]-2-oxoethyl~piperidin-4-~)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 295A for the product from Example 225A to provide the title compound as a yellow solid (50 mg). 1H NMR (300 MHz, CDCl3) 8 1.42 (d, 2H, J=6 Hz), 1.50-1.60 (m, 2H), 2.20-2.50 (m, 2H), 3.10-3.18 (m, 1H), 3.22-3.41 (m, 2H), 3.62-3.70 (m, 2H), 3.80 (s, 6H), 6.15 (m, 1H), 6.82 (s, 1H), 7.20-7.35 (m, 4H), 8.02 (s, 1H), 8.25 (d, 1H, J=6 Hz,); MS
(DCI/NH3) m/e 372 (M+H)+; Anal. calcd for C2oHzsN3aa~2.24 H20: C, 58.34; H, 7.22; N, 10.20. Found: C, 58.73; H, 7.50; N, 9.79.
Example 296 2-[1-(2-f~[3-(dimethylamino)phenyl]amino -2-oxoethyl)piperidin-4-yllpyridinium N-oxide The procedure described in Example 282 was followed, substituting N,N-dimethylbenzene-1,3-diamine for 5-aminoindan. The residue was purified by flash column chromatography on silica gel (elution with 5% methanol:dichloromethane) to provide 60 mg (48% yield) of the title compound as a clear oil. 1H NMR (300 MHz, CDC13) 8 1.70 (q, J=12.4 Hz, 1H), 1.71 (q, J=12.2 Hz, 1H), 2.15 (d, J=12.9 Hz, 2H), 2.53 (t, J=11.9 Hz, 2H), 2.96 (s, 6H), 3.08 (d, J=13.6 Hz, 2H), 3.18 (s, 2H), 3.55 (tt, J=12.0, 3.4 Hz, 1H), 6.49 (dd, J=8.0, 2.2 Hz, 1H), 6.72 (d, J=8.1 Hz, 1H), 7.17 (m, 2H), 7.24 (t, J=2.4 Hz, 1H), 7.28 (d, J=4.4 Hz, 2H), 9.05 (s, 1H); MS (DCI/NH3) m/e 355 (M+H)+; Anal. calcd for C20H26N4~2~o~3 CH2Cl2: C, 64.18; H, 7.06; N, 14.75. Found: C, 64.32; H, 7.04;
N, 14.79.
Example 297 2-(1-~2-[(3-isopropylpheny~amino~-2-oxoethyllpiperidin-4-yl)pyridinium N-oxide Example 297A
2-chloro-N-(3-isopropylphenyl)acetamide The procedure described in Example 22A was followed, substituting 3-iso-propylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (7.12 g, 92%).
'H NMR (300 MHz, CDCl3) 8 1.24 (dd, J=10.3, 7.0 Hz, 6H), 2.91 (m, 1H), 4.19 (s, 2H), 7.05 (d, J=7.8 Hz, 1H), 7.39 (m, 3H), 8.18 (s, 1H); MS (ESI) m/e 212 (M+H)+.
Example 297B
2-(1-f 2-[(3-isoproR l~phenyl)amino]-2-oxoeth~)piperidin-4-~)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 297A for the product from Example 225A to provide the title compound as an amorphous solid. (160 mg, 30%). 1H NMR (300 MHz, CD30D) 8 1.25 (d, J=6.8 Hz, 6H), 1.86 (dd, J=12.7, 3.6 Hz, 2H), 2.05 (m, 2H), 2.44 (m, 2H), 2.89 (m, 1H), 3.13 (m, 3H), 3.23 (s, 2H), 7.00 (d, J=7.8 Hz, 1H), 7.24 (t, J=7.8 Hz, 1H), 7.40 (m, 3H), 7.48 (s, 1H), 7.60 (d, J=4.4 Hz, 1H), 8.34 (d, J=6.4 Hz, 1H); MS (ESI) m/e 354 (M+H)+; Anal. calcd for C2lHa~N302~0.4 CH2C12~2.0 H20: C, 52.29; H, 6.15; N, 7.82. Found: C, 52.21; H, 6.14; N, 8.15.
Exam lp a 298 2-(1-~2-[(3-chloro-2-meth~phenyl)amino]-2-oxoeth~)piperidin-4-yl)pyridinium N-oxide Example 298A
2-chloro-N-(3-chloro-2-methylphenyl)acetamide The procedure described in Example 22A was followed, substituting 3-chloro-2 methylphenylamine for 3,4,5-trimethoxyaniline to provide the title compound (7.3 g, 95%).
1H NMR (300 MHz, CDCl3) 8 2.35 (s, 3H), 4.26 (s, 2H), 7.19 (m, 1H), 7.26 (m, 1H), 7.73 (d, J=8.1 Hz, 1 H), 8.26 (s, 1 H); MS (ESI) m/e 219 (M+H)+.
Example 298 2-(1-12-[(3-chloro-2-meth~phenyllamino]-2-oxoethyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 225B was followed, substituting the product from Example 298A for the product from Example 225A to provide the title compound as an amorphous solid. (25 mg, 18%). 'H NMR (300 MHz, CD30D) 8 1.64 (dd, J=12.2, 3.7 Hz, 2H), 1.87 (m, 2H), 2.05 (d, J=12.9 Hz, 2H), 2.33 (s, 3H), 2.89 (m, 2H), 3.21 (m, 3H), 7.23 (m, 2H), 7.39 (m, 2H), 7.58 (m, 2H), 8.34 (d, J=6.4 Hz, 1H); MS (ESI) m/e 360 (M+H)+.
Example 299 3-methyl-N-f 2-(4-pyridin-2-ylpiperazin-1-yllethyllbenzamide To a solution of 3-methylbenzamide (360 mg, 5.0 mmol) in dichloromethane (5 mL) at 0 °C was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.06 g, 5.5 mmol). After 15 minutes, ethanolamine (333 p,L, 5.5 mmol) was added and the mixture was stirred at room temperature for 6 hours. The mixture was diluted with SO mL
ethyl acetate.
The organic layer was washed with 2x saturated aqueous ammonium chloride (25 mL), 2x saturated aqueous sodium bicarbonate (25 mL), 2x brine (25 mL), dried over magnesium sulfate, filtered and evaporated. The product was a white solid (476 mg, 53%).
To a solution of the resulting alcohol (55 mg, 0.31 mmol) and pyridine (33 ~L, 0.37 mmol) in dichloromethane (0.5 mL) at 0 °C was added methanesulfonyl chloride (43 mg, 0.37 mmol). After 1 hour at room temperature, the mixture was diluted with 10 mL ethyl acetate. The organic layer was washed with 2x dilute aqueous ammonium chloride (5 mL), 2x brine (5 mL), dried over magnesium sulfate, filtered and evaporated. The residue was dissolved in N,N-dimethylformamide (1 mL) and treated with 1-pyridin-2-ylpiperazine (48 ~,L, 0.31 mmol) and N,N-diisopropylethylamine (155 p.L, 0.78 mmol). After 24 hours at 100 °C, the mixture was cooled and concentrated. The residue was purified by flash column chromatography on silica gel (elution with 1-2.5% methanol:dichloromethane) to provide 45 mg (45% yield) of the title compound as a white solid. 1H NMR (300 MHz, CDC13) 8 2.40 (s, 3H), 2.66 (m, 6H), 3.60 (m, 6H), 6.65 (m, 2H), 6.84 (s, 1H), 7.31 (m, 2H), 7.49 (ddd, J=8.7, 7.0, 2.0 Hz, 1H), 7.55 (m, 1H), 7.63 (s, 1H), 8.20 (ddd, J=5.0, 2.0, 0.9 Hz, 1H); MS
(DCI/NH3) m/e 325 (M+H)+; Anal. calcd for C19H24N4O~0.2 H20: C, 69.57; H, 7.50; N, 17.08. Found: C, 69.41; H, 7.21; N, 17.10.
Example 300 2 (1 f,.[~2 3 dibromo-5-meth~benzoyl)aminolmethyl~piperidin-4-yllpyridinium N-oxide Example 300A

2 3-dibromo-5-met~lbenzoic acid To a solution of 3-bromo-5-methylanthranilic acid (2.3 g, 10 mmol) in acetic acid (12 mL) at 0 °C was added 18% hydrobromic acid (30 mL, 30 mmol) followed by drop wise addition of a solution of sodium nitrite (690 mg, 10 mmol) in water (5 mL).
After 10 min, this solution was added to a mixture of copper (I) bromide (2.15 g, 1 S mmol) in 48%
hydrobromic acid (7 mL) at 0 °C. The mixture was allowed to warm to ambient temperature (15 minutes) and then refluxed at 50 °C until evolution of NZ was completed. The mixture was then extracted with ethyl acetate, washed with water, brine, dried with anhydrous magnesium sulfate and concentrated under reduced pressure to provide 2.8 g of crude of the title compound. 1H NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 7.43 (s, 1H), 7.72 (s, 1H), 13.60 (br s, 1H); MS (DCI/NH3) m/e 310 (M+NH4)+.
Example 300B
2 3-dibrorno-5-methylbenzamide A mixture of the product from Example 300A (1.5 g, 5 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCI, 1.43 g, 7.5 mmol) and 1-hydroxybenzotriazole (675 mg, 5 mmol) in chloroform (30 mL) was stirred for 90 minutes and then added to 10% ammonium hydroxide (10 mL) and the stirring was continued for additional 6 hours. Chloroform was then removed under reduced pressure and the precipitated solid was filtered, washed with water and dried under reduced pressure to provide 1.45 g of the title compound. 1H NMR (300 MHz, DMSO-d6) 8 2.27 (s, 3H), 7.20 (m, 1H), 7.60 (br s, 1H), 7.64 (m, 1H), 7.89 (br s, 1H); MS (DCI/NH3) m/e 309 (M+NH4)+
Example 300C
2-(1-f,.[(2 3-dibromo-5-methylbenzoyl)amino]methyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting the product from Example 300B for 3-methylbenzamide to give the title compound (30% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.53 (m, 2H), 1.90 (m, 2H), 2.30 (s, 3H), 2.47 (m, 2H), 2.93 (m, 2H), 3.22 (m, 1H), 4.15 (d, 2H, J=6.1 Hz), 7.29 (m, 4H), 7.66 (dd, 1H, J=2.0, 1.0 Hz), 8.24 (m, 1H), 8.77 (t, 1H, J=6.1 Hz); MS (DCI/NH3) m/e 484 (M+H)+.
Example 301 2- ( 1-j(benzoylamino)methyl]piperidin-4-~pyridinium N-oxide The procedure described in Example 200 was followed, substituting benzamide for 3-methylbenzamide to provide the title compound (27 mg, 30% yield). 'H NMR (300 MHz, CD30D) 8 1.71 (dd, J=12.4, 3.6 Hz, 2H), 2.04 (m, 2H), 2.54 (m, 2H), 3.12 (m, 3H), 3.37 (s, 2H), 7.46 (m, 5H), 7.87 (m, 3H), 8.33 (d, J=6.4 Hz, 1H); MS (ESI) rn/e 312 (M+H)+; Anal.
calcd for C18HZ1N3O2~2.0 H20: C, 62.23; H, 7.25; N, 12.10. Found: C, 61.91; H, 7.27; N, 12.03.
Example 302 2 (1 ~f(4 chloro-3-methylbenzo~l)amino]methyl}piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 4-chloro-3 methylbenzamide for 3-methylbenzamide to provide the title compound (60 mg, 56% yield).
1H NMR (300 MHz, DMSO-d6) 8 2.38 (m, 6H), 2.51 (m, 2H), 2.73 (m, 1H), 2.88 (s, 3H), 4.80 (s, 2H), 7.34 (m, 1H), 7.52 (m, 2H), 7.71 (m, 2H), 7.90 (m, 2H), 9.21 (br s, 1H); MS
(ESI) m/e 360 (M+H)+; Anal. calcd for C19H2z.C1N3O2~1.O CzHF3O2: C, 53.23; H, 4.89; N, 8.87. Found: C, 52.84; H, 4.57; N, 8.62.
764284 Example 303 2 (1 ~f(4 fluoro 3 methylbenzoyllaminolmeth~}piperidin-4-yl)pyridiniumN-oxide The procedure described in Example 200 was followed, substituting 4-fluoro-3-methylbenzamide (Oakwood) for 3-methylbenzamide to provide the title compound.
(82 mg, 82.8%). 1H NMR (300 MHz, DMSO-d6) S 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.29 (s, 3H), 2.36 (t, J=12 Hz, 2H), 2.95 (d, J=12 Hz, 2H), 3.19 (m, 1H), 4.17 (d, J=6 Hz, 2H), 7.27 (m, 3H), 7.39 (dd, J=7.5, 1.5 Hz, 1H), 7.75 (m, 1H), 7.85 (dd, 7.5, 1.5 Hz, 1H), 8.23 (dd, J=6, 1.5 Hz, 1H), 8.72 (t, J=6 Hz, 1H); MS (DCI/NH3) m/e 328 (M+H-16)+; 344 (M+H)+;
Anal. calcd for Cl9HzzN3FOz: C, 66.54; H, 6.46; N, 12.24. Found: C, 66.20; H, 6.31; N, 12.18.
Exam lp a 304 2 [1 (~[3 chloro 4-(trifluoromethoxy~benzoyl]aminolmethyl)piperidin-4-yllpyridinium N
oxide The procedure described in Example 200 was followed, substituting 3-chloro-4 methoxybenzamide (Oakwood) for 3-methylbenzamide. (98 mg, 62%). 1H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (t, J=12 Hz, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1H), 4.18 (d, J=6 Hz, 2H), 7.27 (m, 3H), 7.39 (dd, J=7.5, 1.5 Hz, 1H), 7.75 (m, 1 H), 7.85 (dd, 7.5, 1.5 Hz, 1 H), 8.23 (dd, J=6, 1.5 Hz, 1 H), 8.72 (t, J=6 Hz, 1 H); MS
(DCI/NH3) m/e 414 (M+H-16)+; 430 (M+H)+; Anal. calcd for C19H19C1F3O3: C, 53.09; H, 4.46; N, 9.78. Found C, 52.73; H, 4.34; N, 9.51.
Example 305 2-(1~f~(3-ethoxybenzo~l amino~methyllpiperidin-4-yl~pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3-ethoxybenzamide for 3-methylbenzamide. (65 mg, 47%). 'H NMR (300 MHz, DMSO-d6) b 1.34 (t, J=7.5 Hz, 3H), 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (t, J=12 Hz, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1H), 4.08 (q, J=6 Hz, 2H), 4.18 (d, J=6 Hz, 2H), 7.08 (m, 1H), 7.27 (m, 2H), 7.39 (m, 4H), 8.23 (dd, J=6 Hz, 1.5 Hz, 1H), 8.72 (t, J=6 Hz, 1H); MS
(DCI/NH3) m/e 340 (M+H-16)+; 356 (M+H)+; Anal. calcd for C2oH25N3O3~0.75 HZO: C, 65.11;
H, 7.24;
N, 11.39. Found: C, 65.00; H, 7.08; N, 11.01.
Example 306 2-(1-~[(3 5-dichlorobenzoy~amino]methyl}piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3,5-dichlorobenzamide (Lancaster) for 3-methylbenzamide. (46 mg, 33.3%). 1H NMR
(300 MHz, DMSO-d6) 81.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (t, J=12 Hz, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1H), 4.18 (d, J=6 Hz, 2H), 7.29 (m, 2H), 7.39 (m, 1H), 7.83 (t, J=1.5 Hz, 1H), 7.92 (d, J=1.5 Hz, 2H), 8.23 (dd, J=6 Hz, 1.5 Hz, 1H), 8.98 (t, J=6 Hz, 1H); MS
(DCI/NH3) m/e 365 (M+H-16)''~; 381 (M+H)+; Anal. calcd for C1gH19C12N3O2: C, 56.85; H, 5.04; N, 11.05. Found: C, 56.56; H, 5.20; N, 10.79.
Example 307 2 [1 (f f4-methyl-3-(trifluoromethxllbenzoyl]amino)methyl)piperidin-4-yllpyridinium N-oxide The procedure described in Example 200 was followed, substituting 4-Methyl-3-trifluoromethylbenzamide (Apollo) for 3-methylbenzamide. (75 mg, 66.3%). IH
NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (t, J=12 Hz, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1H), 3.25 (s, 3H), 4.18 (d, J=6 Hz, 2H), 7.29 (m, 2H), 7.39 (m, 1H), 7.58 (d, J=9 Hz, 1H), 8.08 (d, J=9 Hz, 1H), 8.19 (s, 1H), 8.23 (dd, J=6, 1.5 Hz, 1H), 8.98 (t, J=6 Hz, 1H); MS (DCI/NH3) m/e 378 (M+H-16)+; 394 (M+H)+; Anal. calcd for CZOHazF3Ns02~0.3 H20: C, 60.23; H, 5.71; N, 10.53. Found: C, 60.03; H, 5.62;
N, 10.18.
Exam lp a 308 2-(~'[(3,4-dimethylbenzovl)amino]methyl)piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3,4-dimethylbenzamide (Lancaster) for 3-methylbenzamide. (85 mg, 89%). IH NMR
(300 MHz, DMSO-d6) 51.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.28 (s, 6H), 2.36 (m, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1H), 4.18 (d, J=6 Hz, 2H), 7.21 (d, J=9 Hz, 1H), 7.29 (m, 2H), 7.39 (m, 1 H), 7.62 (d, J=9 Hz, 1 H), 7.68 (s, 1 H), 8.23 (dd, J=6, 1.5 Hz, 1 H), 8.64 (t, J=6 Hz, 1 H);
MS (DCI/NH3) m/e 324 (M+H-16)+; 340 (M+H)+; Anal. calcd for C2pH~5N3O2~O.3 H2O: C, 69.66; H, 7.48; N, 12.19. Found: C, 69.39; H, 7.41; N, 11.94.
Exam lp a 309 2-(1-f f(3-chloro-4-fluorobenzoyl)amino]methyl]piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3-chloro-4 fluorobenzamide (Maybridge) for 3-methylbenzamide. (85 mg, 89%). 1H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (m, 2H), 2.95 (d, J=12 Hz, 2H), 3.20 (m, 1 H), 4.18 (d, J=6 Hz, 2H), 7.24 (m, 2H), 7.39 (dd, J=6, 1.5 Hz, 1 H), 7.53 (t, J=9 Hz, 1 H), 7.93 (m, 1 H), 8.13 (dd, J=6, 1.5 Hz, 1 H), 8.23 (dd, J=6, 1.5 Hz, 1 H), 8.90 (t, J=6 Hz, 1 H);
MS (DCI/NH3) m/e 348 (M+H-16)+; 364 (M+H)+; Anal. calcd for Cl$H19N30aC1F~0.8 HZO:
C, 57.16; H, 5.49; N, 11.11. Found: C, 57.26; H, 5.40; N, 10.53.
Example 310 2-(1- (,[~pyridin-2-ylcarbo~l)amino]'met~l)uiperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting picolinamide for 3-methylbenzamide. (51 mg, 57%). 'H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (m, 2H), 2.98 (d, J=12 Hz, 2H), 3.18 (m, 1H), 4.22 (d, J=6 Hz, 2H), 7.27 (m, 2H), 7.28 (dd, J=6, 1.5 Hz, 1H), 7.63 (m, 1H), 8.03 (m, 1H), 8.22 (dd, J=6, 1.5 Hz, 1H), 8.23 (dd, J=6, 1.5 Hz, 1H), 8.68 (dd, J=6, 1.5 Hz, 1H), 9.02 (t, J=6 Hz, 1H);
MS (DCI/NH3) m/e 297 (M+H-16)+; 313 (M+H)+; Anal. calcd for CI~HZON402~0.3 H20: C, 64.25;
H, 6.53;
N, 17.63. Found: C, 64.10; H, 6.51; N, 17.35.
Example 311 ~1-f,[(3 5-dimethylbenzoyl)amino]meth~)piperidin-4-~)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3,5-dimethylbenzamide for 3-methylbenzamide. (140 mg, 60%). 1H NMR (300 MHz, CD30D) b 1.76 (dd, J=12.4, 3.6 Hz, 2H), 2.11 (d, J=12.6 Hz, 2H), 2.36 (s, 6H), 2.66 (m, 2H), 3.23 (d, J=12.2 Hz, 2H), 3.47 (m, 1H), 4.38 (s, 2H), 7.22 (s, 1H), 7.41 (m, 1H), 7.52 (m, 2H), 7.56 (m, 2H), 8.34 (d, J=6.4 Hz, 1H); MS (ESI) m/e 340 (M+H)+.
Example 312 2-(1- f [(3-vinylbenzoyl)amino]methyl)piperidin-4-~pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3-vinylbenzamide for 3-methylbenzamide. (84 mg, 67%). 1H NMR (300 MHz, CD3OD) 8 1.75 (dd, J=12.6, 3.7 Hz, 2H), 2.10 (d, J=12.6 Hz, 2H), 2.63 (m, 2H), 3.21 (m, 2H), 3.46 (m, 1H), 4.38 (s, 2H), 5.34 (d, J=11.2 Hz, 1H), 5.90 (d, J=17.3 Hz, 1H), 6.81 (dd, J=17.6, 10.9 Hz, 1H), 7.50 (m, SH), 7.76 (d, J=7.5 Hz, 1H), 7.95 (s, 1H), 8.33 (d, J=6.4 Hz, 1H), MS (ESI) m/e 3 3 8 (M+H)+.
Example 313 2-(1-fj(4-bromo-3-methylbenz~l)amino]methyl)-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide Example 313A
2-[1-(tert-butoxycarbon~l-4-hydroxypiperidin-4-yl]pyridinium N-oxide To a solution of 4'-hydroxy-3',4',5',6'-tetrahydro-2'H-[2,4']bipyridinyl-1'-carboxylic acid tent-butyl ester (Saari, W. S.; et al. J. Med. Chem. 1984, 27, 1182, 4.00 g, 14.4 mmol) in dichloromethane (100 mL) at room temperature was added m-chloroperbenzoic acid (4.70 g, 27.3 mmol) and the reaction stirred for 16 hours. The reaction was quenched with a sodium metabisulfite solution and washed with saturated sodium carbonate. The organic phase was dried (sodium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (gradient elution with dichloromethane to 10% methanol:dichloromethane) to provide the title compound (94%
yield) as a white, solid. 1H NMR (300 MHz, DMSO-d6) 8 1.41 (s, 9H), 1.84 (br d, 2H, J=11.5 Hz), 2.13 (ddd, 2H, J=12.9,,12.9, 4.7 Hz), 3.17 (br s, 2H), 3.87 (br s, 2H), 7.30 (br s, 1H), 7.43 (m, 1 H), 7.51 (ddd, 1 H, J=7.5, 7.5, 1.4 Hz), 7.64 (dd, 1 H, J=7.8, 1.7 Hz), 8.32 (dd, 1 H, J=6.5, 1.4 Hz); MS (DCI/NH3) m/e 295 (M+H)+.
Example 313B
2-[1-(tert-butoxycarbonvl)-1 2 3 6-tetrahydropyridin-4-~]'pyridinium N-oxide The procedure described in Example 237B was followed, substituting the product from Example 313A for the product from Example 237A to provide the title compound (40%
yield) as a yellow oil. 1H NMR (300 MHz, DMSO-d6) 8 1.43 (s, 9H), 3.32 (m, 2H), 3.49 (m, 2H), 4.01 (br s, 2H), 6.27 (br s, 1H), 7.36 (m, 3H), 8.20 (m, 1H); MS
(DCI/NH3) m/e 261 (M+H-16)+; 277 (M+H)+.
Example 3130 2-(1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide The procedure described in Example 166B was followed, substituting the product from Example 313B for the product from Example 166A to provide the title compound as a yellow oil. IH NMR (300 MHz, DMSO-d6) 8 2.78 (m, 2H), 3.28 (rn, 2H), 3.79 (m, 2H), 6.36 (s, 1H), 7.38 (m, 3H), 8.26 (m, 1H); MS (DCI/NH3) m/e 161 (M+H-16)+; 177 (M+H)+.
Example 313D
2-(1- f f (4-bromo-3-methylbenzoyl)amino]'methyl~-1 2 3 6-tetrahydropyridin-4-yl)pvridinium The procedure described in Example 200 was followed, substituting the product from Example 313C amide for the product from Example 119A and 4-bromo-3-methylbenzamide (Lancaster) for 3-methylbenzamide to provide the title compound (6% yield) as a yellow solid. 1H NMR (300 MHz, CD30D); ~ 2.63-2.75 (m, 2H), 2.86-2.99 (m, 2H), 3.30 (s, 3H), 3.36-3.44 (m, 2H), 4.39 (s, 2H), 6.23.(m, 1H), 7.37-7.51 (m, 2H), 7.52-7.6'1 (m, 2H), 7.66 (d, J=9.0 Hz, 1H), 7.68 (d, J=3.6 Hz, 1H), 8.27 (d, J=8.0 Hz, lH); MS (DCI/NH3) m/e 386/388 (M+H-16)+; 402/404 (M+H)~. ' Example 314 2-f 1-[(2-naphthoylamino methyllpiperidin-4-yl}pyridinium N-oxide The procedure described in Example 200 was followed, substituting naphthalene-carboxylic acid amide for 3-methylbenzamide to provide the title compound (75 mg, 56%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d~) 6 1.56 (q, J=12.2 Hz, 1H), 1.57 (q, J=11.9 Hz, 1H), 1.92 (d, J=11.2 Hz, 2H), 2.41 (t, J=11.2 Hz, 2H), 3.02 (d, J=11.5 Hz, 2H), 3.25 (m, J=12.9 Hz, 1H), 4.24 (d, J=5.8 Hz, 2H), 7.30 (m, 2H), 7.40 (dd, J=7.5, 2.4 Hz, 1H), 7.62 (m, 2H), 8.01 (m, 4H), 8.24 (d, J=5.8 Hz, 1 H), 8.51 (s, 1 H), 8.97 (s, 1 H); MS (DCI/NH3) m/e 362 (M+H)+; Anal. calcd for CZZH2sN302~0.2 CHZCl2~1.2 H2O: C, 66.65; H, 6.50; N, 10.50. Found: C, 66.62; H, 6.20; N, 10.19.
Example 315 .
2-(~j(thien-2-ylcarbonyl)aminolmethyl}piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting thiophene-2-carboxylic acid amide for 3-methylbenzarnide. (100 mg, 56.6%). 1H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (m, 2H), 2.98 (d, J=12 Hz, 2H), 3.18 (m, 1H), 4.12 (d, J=6 Hz, 2H), 7.18 (dd, J=4.5, 3.0, 1H), 7.28 (m, 2H), 7.39 (dd, J=9.0, 3 Hz, 1 H), 7.78 (dd, J=4.5, 1.5 Hz, 1 H), 7.85 (dd, J=4.5, 1.5 Hz, 1 H), 8.22 (dd, J=6, 1.5 Hz, 1 H), 8.79 (t, J=6 Hz, 1H); MS (DCI/NH3) m/e 297 (M+H-16)+; 313 (M+H)+.
Example 316 2-f 1-(,~((6-chloro~yridin-3-yl)carbons]aminolmethyl)piperidin-4-yl]pyridinium N-oxide The procedure described in Example 200 was followed, substituting 6-chloronicotinamide for 3-methylbenzamide. 1H NMR (300 MHz, DMSO-d6) 8 1.52 (m, 2H), 1.89 (d, J=12 Hz, 2H), 2.36 (m, 2H), 2.98 (d, J=12 Hz, 2H), 3.22 (m, 1H), 4.19 (d, J=6 Hz, 2H), 7.29 (m, 2H), 7.30 (dd, J=6, 1.5 Hz, 1H), 7.65 (d, J=9 Hz, 1H), 8.26 (m, 2H), 8.88 (d, J=3 Hz, 1H), 9.02 (t, J=6 Hz, 1H); MS (DGI/NH3) m1e 331 (M+H-16)+; Anal.
calcd for C1~H1~N402C1~0.4 HZO: C, 57.68; H, 5.64; N, 15.83. Found: C, 57.63; H, 65.45;
N, 15.60.
Example 317 2-(1-f [(3-cyanobenzo~)amino]methyllpiperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3-cyanobenzamide for 3-methylbenzamide. (55 mg, 55%). iH NMR (300 MHz, CD30D) 6 1.73 (dd, J=12.5, 3.6 Hz, 2H), 2.11 (m, 2H), 2.69 (d, J=2.0 Hz, 2H), 3.27 (m, 2H), 3.46 (m, 1H), 4.43 (s, 2H), 7.41 (d, J=2.4 Hz, 1H), 7.56 (m, 2H), 7.70 (t, J=7.8 Hz, 1H), 7.96 (d, J=8.8 Hz, 1H), 8.18 (d, J=8.1 Hz, 1H), 8.24 (s, 1H), 8.34 (d, J=6.4 Hz, 1H), MS
(ESI) m/e 337 (M+H)+.
Example 318 ~l-f f(2,3-dibromo-5-meth lbenzoyl amino]methyl-1,2,3,6-tetrah dropyridin-4-~)pyridinium N-oxide The procedure described in Example 200 was followed, substituting the product from Example 300B for 3-methylbenzamide and the product from Example 313C for the product from Example 119A to give the title compound (4% yield) as a yellow solid. 1H
NMR (300 MHz, CD30D); S 2.35 (s, 3H), 2.65-2.73 (m, 2H), 2.80-2.85 (s, 2H), 3.10 (t, J=9 Hz, 2H), 3.45-3.58 (m, 2H), 6,21 (m, 1H), 7.21 (d, J=3.1 Hz, 1H), 7.40-7.65 (m, 4H), 8.25 (d, J=9.0 Hz, 1H); MS (ESI-) m/e 479 (M-H)+.
Example 319 2-(1-f [(4-bromobenzoyl amino]methyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 4-bromobenzamide for 3-methylbenzamide to provide the title compound (87 mg, 60%
yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 1.55 (q, J=11.9 Hz, 2H), 1.90 (d, J=11.9 Hz, 2H), 2.36 (t, J=11.9 Hz, 2H), 2.98 (d, J=11.5 Hz, 2H), 3.24 (m,lH), 4.18 (d, J=4.8 Hz, 2H), 7.29 (m, 2H), 7.39 (dd, J=7.8, 2.7 Hz, 1H), 7.69 (rri, 2H), 7.84 (m, 2H), 8.24 (d, J=5.8 Hz, 1H), 8.89 (br s, 1H); MS (DCI/NH3) m/e 390/392 (M+H)+.
Example 320 2-(1-f f(3-chloro-4-methylbenzoyl)aminolmethyl~piperidin-4-yl)pyridinium N-oxide The procedure described in Example 200 was followed, substituting 3-chloro-4 methylbenzamide for 3-methylbenzamide to provide the title compound (66 mg, 50% yield) as a white solid. IH NMR (300 MHz, DMSO-d6) 8 1.55 (q, J=11.9 Hz, 2H), 1.90 (d, J=11.9 Hz, 2H), 2.36 (t, J=11.9 Hz, 2H), 2.39 (s, 3H), 2.98 (d, J=11.5 Hz, 2H), 3.24 (m, 1H), 4.18 (d, J=4.8 Hz, 2H), 7.29 (m, 2H), 7.39 (dd, J=7.8, 2.7 Hz, 1H), 7.48 (d, J=6.7 Hz, 1H), 7.80 (d, J=6.8 Hz, 1H), 7.94 (s, 1H), 8.24 (d, J=5.8 Hz, 1H), 8.89 (br s, 1H); MS
(DCI/NH3) m/e 360 (M+H)+.
Example 321 2-(1-~[rimeth~(3-methylbenzo~l~amino]methyl'rpiperidin-4-yl)pyridinium N-oxide To a solution of the product from Example 200 (90 rng, 0.28 mmol) in N,N-dimethylformamide (4 mL) at cooled to 0 °C was added sodium hydride (121 mg, 0.88 mmol). To this mixture methyl iodide (106 mg, 0.35 mmol) was added. After 40 minutes at room temperature, the mixture was neutralized with acetic acid and concentrated. The residue was purified by flash column chromatography on silica gel (elution with 5-10%
methanol:dichloromethane) to provide 85 mg (60% yield) of the title compound as a white solid. 1H NMR (300 MHz, DMSO-db) 8'1.52 (q, J=11.8, Hz, 2H), 1.89 (d, J=9.2 Hz, 2H), 2.04 (t, J=11.5 Hz, 2H), 2.35 (s, 3H), 2.77 (d, J=4.4 Hz, 3H), 2.92 (m, 2H), 3.16 (m, 1H), 3 .32 (s, 2H), 7.24 (m, 1 H), 7.30 (m, 4H), 7.40 (m, 1 H), 7.62 (m, 1 H), 8.24 (d, J=6.1 Hz, 1 H);
MS (DCI/NH3) m/e 340 (M+H)+.
Example 322 2-(1-~j(3-nitrobenzoylZamino]methyl)piperidin-4-yl)pyridinium N-oxide .
The procedure described in Example 200 was followed, substituting 3-nitrobenzarnide for 3-methylbenzamide to provide the title compound (28 mg, 26% yield) as an oil. 1H NMR
(300 MHz, CD30D) 8 1.74 (m, 2H), 2.11 (m, 2H), 2.69 (m, 2H), 3.26 (m, 2H), 3.45 (m, 1H), 4.35 (s, 2H), 7.50 (m, 4H), 7.73 (m, 3H), 7.87 (d, J=8.1 Hz, 1H), 8.34 (d, J=6.4 Hz, 1H); MS
(ESI) mle 357 (M+H)+; Anal. calcd for ClBHZON4O4-2.O CZHF3O2: C, 45.21; H, 3.79; N, 9.59.
Found: C, 45.58; H, 4.00; N, 9.72.
Example 323 2-(1-~[(2-chloro-5-methylbenzovl)amino]meth~~uiperidin-4-~lpyridinium N-oxide The procedure described in Example 200 was followed, substituting 2-chloro-5 methylbenzamide for 3-methylbenzamide to provide the title compound (31 mg, 29% yield) as an oil. iH NMR (300 MHz, CD30D) ~ 1.74 (m, 2H), 2.08 (d, J=11.9 Hz, 1H), 2.35 (m, 2H), 2.67 (m, 2H), 2.84 (m, 1H), 3.15 (m, 2H), 3.42 (m, 2H), 4.34 (m, 2H), 7.34 (m, 4H), 7.55 (m, 2H), 7.71 (s, 1H), 8.34 (d, J=6.4 Hz, 1H); MS (ESI) m/e 360 (M+H)+;
Anal. calcd for C19H22CIN302~2.O CZHF3Oz: C, 46.99; H, 4.11; N, 7.15. Found: C, 47.23; H, 3.96; N, 7.02.
Example 324 2-(1-{ f (3-methoxy-2-methylbenzoyl)aminolmethyl)piperidin-4-yl)~yridinium N-oxide Example 324A
3-methoxy-2-methylbenzamide A reaction mixture containing 3-methoxy-2-methylbenzoic acid (2 g, 12.04 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiirnide hydrochloride (2.76 g, 14.4 mmol), 1-hydroxybenzotriazole hydrate (1.95 g, 14.4 mmol) in chloroform was stirred at room temperature for 1 hour. The reaction was quenched with 30% ammonium hydroxide solution (35 mL) and stirnng continued for another.1.5 hours. The layers were separated, the organic phase dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica gel (50% ethyl acetate/hexanes) to afford a white powder (1.2 g, 60%). IH NMR (300 MHz, CDCl3) 8 2.3 (s, 3H), 3.82 (s, 3H), 6.9 (d, 1H, J=9 Hz), 7.02 (d, 1H; J=9 Hz), 7.18 (t, 1H, J=9 Hz); MS
(DCI/NH3) m/e 166 (M+H)+.
Example 324B
2-(1-~n[(3-methoxy-2-methylbenzoyllamino]methyl~piperidin-4-yl)nyridinium N-oxide The procedure described in Example 200 was followed, substituting the product in Example 325A for 3-methylbenzamide to provide the title compound (45 mg, 16%) as a white solid. 1H NMR (300 MHz, CDC13) b 1.45-1.55 (m, 2H), 2.05-2.15 (m, 2H), 2.25 (s, 3H), 2.55-2.65 (m, 2H), 3.05-3.10 (m, 2H), 3.40-3.50 (m, 1H), 3.81 (s, 3H), 4.40 (d, 2H, J=6 Hz), 6.4 (br s, 1H), 6.85 (d, 1H, J=9 Hz,), 7.0 (d, 1H, J=9 Hz), 7.10-7.20 (m, 2H), 7.25-7.32 (m, 2H), 8.20 (d, 1H, J=6 Hz); MS (DCI/NH3) m/e 356 (M+H)+; Anal. calcd for CzoHZ5N303:
C, 67.58; H, 7.09; N, 11.82. Found: C, 67.29; H, 7.20; N, 11.87.
Example 325 2~1-~[(4-chloro-3-methoxybenzoyl)amino]methyl~~eridin-4-yl)pyridinium N-oxide Example 325A
4-chloro-3-methoxybenzamide The procedure described in Example 325A was followed, substituting 3-methoxy-4-chlorobenzoic acid for 3-methoxy-2-methylbenzoic acid to provide the title compound (1.5 g, 75% yield) as a white solid. 1H NMR (300 MHz, DMSO-d6) 8 3.9 (s, 3H), 7.42-7.52 (m, 2H), 7.6 (d, 1H, J=3 Hz), 8.08 (s, 2H); MS (DCI/NH3) m/e 203. (M+NH4)+.
Example 325B
2-(1-f [(4-chloro-3-methox b~yl)amino]methyl}piperidin-4-y1)pyridiniurn N-oxide The procedure described in Example 200 was followed, substituting the product in Example 326A for 3-methylbenzainide to provide the title compound (75 mg, 17%) as a yellow solid. 1H NMR (300 MHz, CDC13) ~ 1.6-1.68 (m, 2H), 2.05-2.20 (m, 2H), 2.50-2.65 (m, 2H), 3.05-3.20 (m, 2H), 3.42-3.55 (m, 1H), 3.98 (s, 3H), 4.40 (d, 2H, J=6 Hz), 6.65 (br s, 1 H), 7.15 (m, 1 H), 7.2-7.3 5 (m, 3H), 7.40 (d, 1 H, J=9 Hz),. 7.45 (d, 1 H, J=3 Hz), 8.22 (d, 1 H, J=6 Hz); MS (DCI/NH3) m/e 376 (M+H)+; Anal. calcd for CI9H22C1N3O3: C, 60.72;
H, 5.90;
N, 11.18. Found: C, 60.44; H, 5.84; N, 10.97.
Example 326 ~3-methylphen~)-2-(3-pyridin-2-ylpiperidin-1-yl)acetamide Example 326A
tent-butyl 5',6'-dihydro-2,3'-bipyridine-1'(2'H)-carboxylate The procedure described in Example 328C was followed, substituting 2-pyridylzinc bromide for 2-thiazolylzinc bromide to provide the title compound (92%). MS
(DCI/NH3) m/e 261 (M+H)+.
Example 326B
tent-butyl 3-pyridin-2-ylpiperidine-1-carboxylate The procedure described in Example 328D was followed, substituting the product from Example 326A for the product from Example 328C to provide the title compound (93%). MS (DCI/NH3) m/e 263 (M+I~+.

Example 326C
2-piperidin-3-ylpyridine The procedure described in Example 328E was followed, substituting the product from Example 326B for the product from Example 328D to provide the title compound.
Example 326D
N-(3-rnethylphenyl)-2-(3-pyridin-2-ylp~eridin-1-yl)acetamide The procedure described in Example 33C was followed, substituting the product from Example 326C for the product from Example 33B to provide the title compound (xx%). 1H , NMR (300 MHz, CDCl3) 8 1.71 (m, 4H), 2.04 (m, 1H), 2.36 (s, 3H), 2.43 (m, 1H), 2.65 (m, 1 H), 2. 92 (m, 1 H), 3 .15 (m, 3 H), 6.91 (d, J=7. S Hz, 1 H), 7.19 (m, 3 H), 7.3 9 (m, 2H), 7.63 8 (t, J=7.5 Hz, 1H), 8.53 (m,. 1H), 9.25 (bs, 1H); MS (DCI/NH3) mle 310 (M+I-~f;
Anal. calcd for ~19H23N3~~ Ca 73.76; H, 7.49; N, 13.58. Found: C, 73.93; H, 7.42; N, 13.53.
Example 327 N-(3-methylnhenyl)-2-(3-pyridin-2-ylpyrrolidin-1-yl)acetamide The procedure described in Example 232B was followed, substituting 2-pyrrolidin-3-ylpyridine for the product from Example 232A to provide the title compound (21 % yield) as a yellow oil. 1H NMR (300 MHz, CD30D); 8 2.06-2.12 (m, 1H), 2.15-2.23 (m, 4H), 2.84-2.98 (m, 1H), 3.0-3.10 (m, 2H), 3.12-3.20 (m, 1H), 3.25 (d, J=12.0 Hz, 1H), 3.45 (d, J=12.0 Hz, 1H), 3.50-3.65 (rn, 1H), 6.93 (d, J=9.0 Hz, 1H), 7.06-7.13 (m, 2H), 7.18-7.23 (m, 2H), 7.62 (ddd, J-6.5, 6.1, 3.3 Hz, 1H). 8.59 (d, 6.0 Hz, 1H), 7.38 (s, 1H); MS
(DCI/NH3) m/e 296;
Anal. calcd for C18H21N3O : C, 73.19; H, 7.17; N, 14.23. Found: C, 72.88; H, 7.01; N, 13.91.
Example 328 N-(1-methyl-1H-benzimidazol-2-y~-2-[3 ~1 3-thiazol-2-yl)piperidin-lyllacetamide Example. 328A
tert-butyl 3-oxo~iperidine-1-carboxylate A solution of 1-benzylpiperidin-3-one (22.06 g, 116.6 mmol, Acros), 20%
palladium hroxide on carbon (2.50 g), di-tert-butyl dicarbonate (22.37 g, 102.5 mmol) and triethylamine (13.9 mL) in methanol (200 mL) was placed under 60 psi of hydrogen at 50 °C for 40 minutes. The solution was cooled to room temperature, filtered and concentrated to provide the title compound. IH NMR (300 MHz, DMSO-d6) 8 1.48.(s, 9H), 1.99 (m, 2H),'2.47 (m,, 2H), 3.59 (m, 2H), 4.00 (s, 2H); MS (DCI/NH3) m/e 200 (M+H)+; 217 (M+NH4)+, Example 328B
test-butyl 5-f ((trifluoromethyl)sulfonyl]oxy; -3 6-dihydro~yridine-1 (2H -carboxylate A mixture of diisopropylamine (13.1 mL, 110 mmol) and tetrahydrofuran (150 mL) was cooled to -10 °C. To the mixture was added n-butyllithium (2.SM in hexane, 44 mL, 110 .
mmol) via syringe. The mixture was stirred for 30 minutes, cooled to -78 °C and a solution of the product from Example 328A (16 g, 80 mmol) was added as a solution in tetrahydrofuran (50 mL). The mixture was stirred for 15 minutes and then added solution of N-phenyl-bis-trifluoromethnaesulfonamide (35.0 g; 110 mmol) dissolved in tetrahydrofuran (60mL). The reaction was allowed to warm to room temperature, quenched with saturated sodium bicarbonate solution (75 mL) and diluted with diethyl ether. The layers were separated and the organic phase washed with brine, dried with magnesium sulfate and concentrated under reduced pressure. The residue was purified by flash column chromatography (silica gel, 5°!° ethyl acetate:hexanes) to obtain desired triflate as an oil (7.8 g, 24%). MS (DCI/NH3) m/e 333 (M+H)+.
Example 328C
tert-butyl5-(1,3-thiazol-2-~)-3,6-dihydropyridine-1(2H)-carboxylate To the mixture of 2-thiazolylzinc bromide (20 mL, 10 mmol) in dry tetrahydrofuran (30 mL) at 0 °C was added the product from Example 328B (3.3 gm, 10 mmol) and tetrakis(tripehynlphosphine) palladium (0) (10%mole 1.1 g). The mixture was heated at 50 °C for 1 hour, cooled to room temperature, quenched with brine and extracted with ethyl acetate. The organic layer was dried with magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography (silica gel, 25%
ethyl acetate:hexanes) to obtain desired product 1.4 g (60%) as colorless oil.
MS (DCI/NH3) m/e 265 (M+H)+, Example 328D

tent-butyl 3-( 1,3-thiazol-2-~l~piperidine-1-carboxylate A solution of the product from Example 328C in methanol (50 mL) and 20%
palladium over carbon (0.7g) was placed under 1 atmosphere of hydrogen pressure for 4 days at room temperature. The reaction was filtered and concentrated under reduced pressure to provide the title compound (1.42 g, 100 %). MS (DCI/NH3) m/e 267 (M+H)+.
Example 328E _ 3-( 1,3-thiazol-2-yl)piperidine A solution of the product from Example 328D (1.2 g, 4.5 mmol) in 25%
trifluoroacetic acid/dichloromethane (10 mL) was stirred at room temperature for 2 hours.
The reaction was concentrated under reduced pressure to provide the title compound 0.70 g , (76%) as yellow color oil. This compound was used directly in the next reaction.
Example 328F
N-(1-methyl-1 H-benzimidazol-2-yl~-2-[3-( 1,3-thiazol-2-yl~p~eridin-1-~lacetamide The procedure described in Example 247B was followed, substituting 2-chloro-N-(1-methyl-1H-benzoimidazol-2-yl)acetamide (Caroti, P.;'et al. Farmaco 1989, 44, 227) for the product from Example 247A and substituting the product from Example 328E for 1-(2-cyanopyridyl)piperazine to provide the title compound (23%) as a yellow oil.

(300MHz, CD3OD); 8 1.80-1.88 (m, 1H), 1.90-1.95 (m, 2H), 2.05-2.10 (m, 1H), 2.45-2.68 (m, 4H), 2.98-3.05 (m, 2H), 3.21-3.26 (m, 1H), 3.65 (s, 3H), 7.20-7.38 (m, 2H), 7.42-7.58 (m, 3H), 7.65 (d, J=3.1 Hz, 1H); Anal. calcd for C,8Ha1N50S: C, 60.21; H, 6.01; N, 19.50.
Found: C, 60.20; H, 5.84; N, 19.16.
Example 329 N-( 1-methyl-1 H-benzimidazol-2-yl)-2-[3-( 1, 3-thiazol-2-yl)pyrrolidin-1-~l acetamide Exa ale 329A
tert-bu 13-oxopyrrolidine-1-carboxylate The procedure described in Example 328A was followed, substituting 1-benzylpyrrolidin-3-one (Acros) for 1-benzylpiperidin-3-one to provide the title compound.
MS (DCI/NH3) m/e 186 (M+H)+; 203 (M+NH4)+.

Example 329B
tert-butyl~~[(trifluoromethXl)sulfonylloxy)-2,5-dihydro-1 H-pyrrole-1-carbox~ate, The procedure described in Example 328B was followed, substituting the product from Example 329A for the product from Example 328A to provide the title compound. 1H
NMR (300 MHz, CDC13) 8 5.71-5.76 (m, 1H), 4.22 (m, 4H), 1.48 (s, 9H); MS
(DCI/NH3) m/e 318 (M+H)+.
Example 329C
tert-butyl 3-( 1,3-thiazol-2-yl)-2,5-dihydro-1 H-pyriole-1-carboxylate The procedure described in Example 143A was followed, substituting 2-thiazolylzinc bromide for 3-methyl-2-pyridylzinc bromide and the product from Example 329B
for 4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester to provide the title compound MS (DCI/NH3) m/e 253 (M+H)+; 270 (M+NH4)+.
Example 329D
tert-butyl 3-( 1,3-thiazol-2-yl)pyrrolidine-1-carboxylate The procedure described in Example 224 was followed, substituting the product from Example 329B for the product from Example 166C to provide the title compound (45%
yield) as a yellow oil. 1H NMR (300 MHz, DMSO-db) 8 1.47 (s, 9H), 2.36 (m, 2H), 3.73 (m, SH), 7.25 (d, 1H, J=3.4 Hz), 7.71 (d, 1H, J=3.1 Hz); MS (DCI/NH3) mle 255 (M+H)+.
Example 329E
2-pyrrolidin-3-yl-1,3-thiazole The procedure described in Example 166B was followed, substituting the product from Example 329C for the product from Example 166A to provide the title compound (81%
yield) as a yellow solid. 1H NMR (300 MHz, DMSO-d6) 8 2.12 (m, 1H), 2.43 (m, 1H), 3.35 (m, 3H), 3.64 (m, 1H), 3.98 (m, 1H), 7.71 (d, 1H, J=3.4 Hz), 7.78 (d, 1H, J=3.1 Hz), 8.99 (br s, 1H); MS (DCI/NH3) m/e 155 (M+H)+.
Example 329F
N-( 1-methyl-1 H-benzimidazol-2-yl)-2-f 3-( 1,3-thiazol-2-yl)pyrrolidin-1-yllacetamide The procedure described in Example 247B was followed, substituting 2-chloro-N-(1-methyl-1H-benzoimidazol-2-yl)acetamide (Caroti, P.; et al. Farmaco 1989, 44, 227) for the product from Example 247A and substituting the product from Example 329D for 1-(2-cyanopyridyl)piperazine to provide the title compound (23% yield) as a yellow oil. IH NMR
(300MHz, CD30D); 8 2.51-2.65 (m, 1H), 2.68-3.25 (m, 1H), 3.62 (s, 2H), 3.85 (t, J=3.0 Hz, 1H), 4.15-4.2.4 (m, 4H), 4.92 (s, 3H), 7.13-7.25 (m, 4H), 7.58 (d, J=3.0 Hz, 1H), 7.80 (d, J=3.0 Hz, 1H); MS (DCT/NH3) m/e 242; Anal. calcd for C1~H19NSOS : C, 59.80; H, 5.61; N, 20.51. Found: C, 59.61; H, 5.42; N, 20.86.
Example 330 2-(2-benzylpyrrolidin-1-~)-N-(3-fluorophenyl)acetamide The procedure described in Example 247B was followed, substituting the product from Example 254A for the product from Example 247A and substituting 3-benzylpyrrolidine (Array) for 1-(2-cyanopyridyl)piperazine to provide the title compound (21% yield) as a yellow oil. IH NMR (300 MHz, CD30D); & 1.58-1.92 (m, 4H), 2.38-2.42 (m, 1H), 2.58-2.70 (m, 1H), 2.83-3.02 (m, 2H), 3.10 (d, J=12.0 Hz, 1H), 3.09-3.23 (m, 1H), 3.25-3.31 (m, 1H), 3.58 (d, J=12.0 Hz, 1H), 6.80-6.85 (m, 1H), 7.12-7.37 (m, 6H), 7.55 (dt, J=9.0, 3.0 Hz, 1H); MS (DCI/NH3) m/e 313; Anal. calcd for C19H21NZOF~0.10 HzO:
C, 72.63; H, 6.80; N, 8.92. Found: C, 72.51; H, 6.88; N, 8:82.
Example 331 N-(4-fluorophenyl)-2-(3-thien-2-ylpyrrolidin-1-yl)acetamide Example 331A
tert-butyl 3-thien-2-yl-2, 5-dihydro-1 H-pyrrole-1-carboxylate To a solution of the product from Example 329B (3.65 gm, 11.5 mmol) in tetrahydrofuran (20 mL) added a solution of 2-thienylzinc bromide (40 mL, 20 mmol, 0.5 M
soln.) in dry tetrahydrofuran followed by addition of tetrakis(triphenylphosphine) palladium (0) (9%mole, 1.20 g) under inert atmosphere at room temperature. The mixture was heated at SO °C for 2 hours. The reaction was cooled to room temperature, quenched with aqueous sodium bicarbonate and extracted with ethyl acetate (3 x 30 ml). The organic layers were combined, washed with brine, dried with sodium sulfate concentrated under reduced pressure and purified by flash column chromatography (silica gel, 10:1 hexanes:ethyl acetate) to provide the desired compound as an oil (1.50 g, 54%). 1H NMR (300 MHz, CDC13) b 7.23 (d, J=5 Hz, 1H), 7.00 (dd, J=5 Hz, 3 Hz, 1H), 6.94 (m, 1H), 5.93-5.99 (m, 1H), 4.25-4.49 (m, 4H), 1.50 (m, 9H); MS (DCI/NH3) mle 252 (M+H)+.
Example 3 31 B
tert-butyl 3-thien-2-~lpyrrolidine-1-carboxylate A solution of the product from Example 331A (1.25 g, 5 mmol) in methanol (100 mL) was treated with 20 % palladium on carbon (0.7g) and placed under 60 psi of hydrogen pressure at room temperature overnight. The solution was filtered and concentrated to give.
the desired compound (1.10 g, 92 %). IH NMR (300 MHz, CDC13) 8 7.17 (d, J=5, 1 Hz, 1H), 6.95 (dd, J=5, 4 Hz, 1H), 6.87 (m, 1H), 3.39-3.82 (m, SH), 2.32 (m, 1H), 2.02 (m, 1H), 1.47 (rn, 9H); MS (DCI/NH3) m/e 254 (M+H)+. -Example 331 C
3-thien-2-~pyrrolidine The product from Example 331B (1.3 g, 5.13 mmol) was treated with 50%
trifluoroacetic acid/dichloromethane (20 mL) for 2 houis at room temperature.
The reaction was concentrated under reduced pressure, basified with 2N sodium hydroxide and extracted with dichloromethane (3 x 20 mL). The organic layer was combined, washed with brine and dried to give the desired product (0.62 g, 79%) as a yellow oil. 'H NMR (300 MHz, CDCl3) 8 7.14 (d, J=S, lHz, 1H), 6.93 (dd, J=5, 4 Hz, 1H), 6.83 (m, 1H), 3.51 (m, 1H), 3.33 (m, 1H), 3.14 (m, 1H), 3.05 (m, 1H), 2.91 (m, 1H), 2.28 (m, 1H), 1.91 (m, 1H); MS
(DCI/NH3) m/e 154 (M+H)+..
Example 331D
~4-fluoro~henyll-2-(3-thien-2-ylpyrrolidin-1-yl)acetamide The procedure described in Example 247B was followed, substituting the product from Example 331C for 1-(2-cyanopyridyl)piperazine and substituting 2-chloro-N-(4-fluorophenyl)acetamide (Maybridge) for 247A to provide the title compound (23%
yield).
1H NMR (300 MHz, DMSO-d6) 82.14 (m, 1H), 3.20-4.00 (m, 6H), 4.33 (s, 2H), 7.03 (m, 2H), 7.21 (dd, 2H,'J=8.8, 8.8 Hz), 7.46 (dd, 1H, J=5.1, 1.0 Hz), 7.61 (m, 2H), 10.50 (br s, 1H), 10.66 (s, 1H); MS (DCI/NH3) m/e 305 (M+H)+.
In Vitro Data Functional Activity of D4 , Efficacies and potencies of compounds of the present invention at the human D4 receptor were determined using a stable cell line containing the human D4,4 receptor and a chimeric G protein in HEK-293 cells. This cell line allows a robust calcium signal detectable using a calcium fluorescent dye and a fluorescent imaging plate reader (FLIPR) (Coward et al., Anal. Biochem. 270: 242-248, 1999). Cells were plated (20000/well) into 96 well dishes and .cultured for 48 hours. Media is removed, Fluo-4 dye added and cells incubated 1 hour at room temperature. Cells are washed with.phosphate buffered saline to remove excess dye and the compounds to be tested are added to the wells and signal measured in FLIPR.
Percent efficacy is the maximum response produced by the compound in relation to the maximum effect of 10 p,M dopamine. The ECSO is the effective concentration of the compound that causes 50% of the compound's maximum response.
Chimeric G-proteins allow a high-throughput signaling assay of Gi-coupled receptors, P. Coward, S. Chan, H. Wada, G. Humpries and B. Conklin, Analytical Biochemistry 270, 242-248 (1999).
Representative compounds of the present invention exhibited ECSOs in the range of about 0.8 nM to about 5200 nM.
In Vivo Data Rat Penile Erection Model Wistar rats were used as a primary animal model to study penile erection in vivo. All experiments were earned out between 9:00 AM and 3:00 PM in a diffusely illuminated testing room with a red light. Animals were weighed and allowed to adapt to the testing room for 60 minutes before the beginning of experiments. Rats were placed individually in a transparent cage (20x30x30 cm) after drug injection. The number of penile erections were recorded by direct observation for a period of 60 minutes after drug dosing, and the number of animals exhibiting 1 or more erections was expressed as incidence (%). (L)-Ascorbic acid in saline (lmg/mL) was used as vehicle and apomorphine was used as a positive control at a dose of 0.1 ~,mol/kg.
Representative compounds of the present invention induced a minimum of 30%
incidence of penile erections in rats after subcutaneous administration at doses of 0.003 ~.mol/kg to 3 ~.mollkg.
The in vitro and in vivo data demonstrates that compounds of the present invention are dopamine D4 receptor agonists that induce penile erections in mammals.
Compounds of the present invention are dopamine D4 receptor agonists and are useful for the treatment of male sexual dysfunction, female sexual dysfunction, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, anxiety, schizophrenia, mood disorders and depression, as described in: The dopamine D4 receptor: a controversial therapeutic target, N.J. Hrib, Drugs of the future 25:587-611 (2000); Dopamine and sexual behavior, M. Melis and A. Argiolas, Neuroscience and Biobehavioral Reviews 19:19-38 (1995); and Dopamine receptors: from structure to function, C.
Missale, S.R. Nash, S. Robinson, M. Jabber and M. Carom Physiological Reviews 78: 189-225 (1998).
Compounds of the present invention are dopamine D4 receptor agonists and are useful for the treatment of cardiovascular disorders. Dopamine and dopaminergic agents have been reported to exert pharmacologically significant cardiovascular effects on blood pressure and heart rate and are useful in the treatment of cardiovascular disorders, as described in: Chen FF, and Lin MT, Effects of dopamine, apomorphine gamma-hydroxybutyric acid, haloperidol, and pimozide on reflex bradycardia in rats, Journal of Pharmacology and Experimental Therapeutics (1980) 214: 427-432; and it has been reported that primate data support the potential clinical utility of dopamine receptor agonists in treating cardiovascular disease, as described in: Hahn, RA and MacDonald BR, Primate cardiovascular responses meditated by dopaminine receptors: effects of N,N-dipropyldopamine and LY171555, Journal of Phamacology and Experimental Therapeutics (1984) 229: 132-138.
Compounds of the present invention are dopamine D4 receptor agonists and are useful for the treatment of inflammation. Dopaminergic agents can exert anti-inflammatory effects and. are useful for the treatment of diseases where inflammation plays a deleterious role, as described in: Bendele AM, Spaethe SM, Benslay DN, and Bryant HU, Anti-inflammatory activity of pergolide, a dopamine receptor agonist, in Journal of Pharmacology of Pharmacology and Experimental Therapeutics (1991) 259 169-175. Dopaminergic agents can also be of utility in the treatment of cancers, as described in: Lissom P, Mandala M, Giani L, Malugani F, Secondino S, Zonato S, Rocco F, Gardani G, Efficacy of Bromocriptine in the Treatment of Metastatic Breast Cancer and Prostate Cancer-related Hyperprolactinemia, Neuroendocrinology Letters (2000) 21 405-408.
The term agonist, as used herein, means a compound of the present invention that exhibits 30% or greater efficacy in the in vitro assay described herein.
The term "pharmaceutically acceptable earner" as used herein, means a non-toxic, inert solid, semi-solid or liquid filler, diluent, encapsulating material or formulation auxiliary of any type. Some examples of materials which can serve as pharmaceutically acceptable carriers are sugars such as lactose, glucose and sucrose; starches such as corn starch and potato starch; cellulose and its derivatives such as sodium carboxymethyl cellulose, ethyl cellulose and cellulose acetate; powdered tragacanth; malt; gelatin; talc;
excipients such as cocoa butter and suppository waxes; oils such as peanut oil, cottonseed oil, safflower oil, .
sesame oil, olive oil, corn oil and soybean oil; glycols; such a propylene glycol; esters such as ethyl oleate and ethyl laurate; agar; buffering agents such as magnesium hydroxide and aluminum hydroxide; alginic acid; pyrogen-free water; isotonic saline;
Ringer's solution;
ethyl alcohol, and phosphate buffer solutions, as well as other non-toxic compatible lubricants such as sodium lauryl sulfate and magnesium stearate, as well as coloring agents, releasing agents, coating agents, sweetening, flavoring and perfuming agents, preservatives and antioxidants can also be present in the composition, according to the judgment of the formulator. The present invention provides pharmaceutical compositions which comprise compounds of the present invention formulated together with one or more non-toxic pharmaceutically acceptable carriers.
Dosage forms for topical administration of a compound of the present invention include powders, sprays, ointments and inhalants. The active compound is mixed under sterile conditions with a pharmaceutically acceptable earner and any needed preservatives, buffers or propellants which can be required. Opthalmic formulations, eye ointments, powders arid solutions are also contemplated as being within the scope of this invention.
When used in the above or other treatments, a therapeutically effective amount of one of the compounds of the present invention can be employed in pure form or, where such forms exist, in pharmaceutically acceptable salt, ester, amide, or prodrug form. Alternatively, the compound can be administered as a pharmaceutical composition containing the compound of interest in combination with one or more pharmaceutically acceptable Garners.
The phrase "therapeutically effective amount" of the compound of the present invention means a sufficient amount of the compound to treat disorders, at a reasonable benefit/risk ratio applicable to any medical treatment. The specific therapeutically effective dose level for any particular patient will depend upon a variety of factors including the disorder being treated and the severity of the disorder; activity of the specific compound employed; the specific composition employed; the age, body weight, general health, sex and diet of the patient; the time of administration, route of administration, and rate of excretion of the specific compound employed; the duration of the treatment; drugs used in combination or coincidental with the specific compound employed; and like factors well known in the medical arts.
The total daily dose of the compounds of the present invention administered to a mammal, and particularly a human, may range from about 0.001 to about 30 mg/kglday. For purposes of oral administration, more preferable doses can be in the range of from 0.01 to about 10 mg/kg/day. If desired, the effective daily dose can be divided into multiple doses for purposes of administration; consequently, single dose compositions may contain such amounts or submultiples thereof to make up the daily dose.
The pharmaceutical compositions of this invention can be administered to humans and other mammals orally, rectally, parenterally, intracisternally, intravaginally, intraperitoneally, topically (as by powders, ointments ox drops), bucally or as an oral or nasal spray. The term "parenterally" as used herein, refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrasternal, subcutaneous and intraarticular injection and infusion.
Pharmaceutical compositions of this invention for parenteral injection comprise pharmaceutically acceptable sterile aqueous or nonaqueous solutions, dispersions, suspensions or emulsions as well as sterile powders for reconstitution into sterile injectable solutions or dispersions just prior to use. Examples of suitable aqueous and nonaqueous Garners, diluents, solvents or vehicles include water, ethanol, polyols (such as glycerol, propylene glycol, polyethylene glycol and the like), vegetable oils (such as olive oil), injectable organic esters (such as ethyl oleate) and suitable mixtures thereof. Proper fluidity can be maintained, for example, by the use of coating materials such as lecithin, by the maintenance of the required particle size in the case of dispersions and by the use of surfactants.
These compositions may also contain adjuvants such as preservatives, wetting agents, emulsifying agents and dispersing agents. Prevention of the action of microorganisms can be ensured by the inclusion of various antibacterial and antifungal agents, for example, paraben, chlorobutanol, phenol sorbic acid and the like. It may also be desirable to include isotonic agents such as sugars, sodium chloride and the like. Prolonged absorption of the injectable pharmaceutical form can be brought about by the inclusion of agents which delay absorption such as aluminum monostearate and gelatin.
In some cases, in order to prolong the effect of the drug, it is desirable to slow the absorption of the drug from subcutaneous or intramuscular injection. This can be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor water solubility. The rate of absorption of the drug then depends upon its rate of dissolution which, in turn, may depend upon crystal size and crystalline form.
Alternatively, delayed absorption of a parenterally administered drug form is accomplished by dissolving or suspending the drug in an oil vehicle.
Injectable depot forms are made by forming microencapsule matrices of the drug in biodegradable polymers such as polylactide-polyglycolide. Depending upon the ratio of drug to polymer and the nature of the particular polymer employed, the rate of drug release can be controlled. Examples of other biodegradable polymers include poly(orthoesters) and poly(anhydrides). Depot injectable formulations are also prepared by entrapping the drug in liposomes or microemulsions which are compatible with body tissues.
The injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium just prior to use.
Solid dosage forms for oral administration include capsules, tablets, pills, powders and granules. In such solid dosage forms, the active compound may be mixed with at least one inert, pharmaceutically acceptable excipient or carrier, such as sodium citrate or dicalcium phosphate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol and silicic acid; b) binders such as carboxymethylcellulose, alginates, gelatin, polyvinylpyrrolidone, sucrose and acacia; c) humectants such as glycerol; d) disintegrating agents such as agar-agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates and sodium carbonate; e) solution retarding agents such as paraffin;
f) absorption accelerators such as quaternary ammonium compounds; g) wetting agents such as cetyl alcohol and glycerol monostearate; h) absorbents such as kaolin and bentonite clay and i) lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene glycols, sodium lauryl sulfate and mixtures thereof. In the case of capsules, tablets and pills, the dosage form may also comprise buffering agents.
Solid compositions of a similar type may also be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like.
The solid dosage forms of tablets, dragees, capsules, pills and granules can be prepared with coatings and shells such as enteric coatings and other coatings well-known in the pharmaceutical formulating art. They may optionally contain opacifying agents and may also be of a composition such that they release the active ingredients) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner.
Examples of embedding compositions which can be used include polymeric substances and waxes.
The active compounds can also be in micro-encapsulated form, if appropriate, with one or more of the above-mentioned excipients.
Liquid dosage forms for oral administration include pharmaceutically acceptable emulsions, solutions, suspensions, syrups and elixirs. In addition to the active compounds, the liquid dosage forms may contain inert diluents commonly used in the art such as, for example, water or other solvents, solubilizing agents and emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, dimethyl formamide, oils (in particular, cottonseed, groundnut, corn, germ, olive, castor and sesame oils), glycerol, tetrahydrofurfuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan and mixtures thereof.
Suspensions, in addition to the active compounds, may contain agents as, for example, ethoxylated isostearyl alcohols, polyoxyethylene sorbitol and sorbitan esters, microcrystalline cellulose, aluminum metahydroxide, bentonite, agar-agar, tragacanth and mixtures thereof.
Compositions for rectal or vaginal administration are preferably suppositories which can be prepared by mixing the compounds of the present invention with suitable non-irntating excipients or earners such as cocoa butter, polyethylene glycol or a suppository wax which are solid at room temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound.
Compounds of the present invention can also be administered in the form of liposomes. As is known in the art, liposomes are generally derived from phospholipids or other lipid substances. Liposomes are formed by mono- or mufti-lamellar hydrated liquid crystals which are dispersed in an aqueous medium. Any non-toxic, physiologically acceptable and metabolizable lipid capable of forming liposomes can be used.
The present compositions in liposome form can contain, in addition to a compound of the present invention, stabilizers, preservatives, excipients and the like. The preferred lipids are natural and synthetic phospholipids and phosphatidyl cholines (lecithins) used separately or together.
Methods to form liposomes are known in the art. See, for example, Prescott, Ed., Methods in Cell Biology, Volume XIV, Academic Press, New York, N.Y. (1976), p.
33 et seq.
The present invention contemplates pharmaceutically active compounds either chemically synthesized or formed by in vivo biotransformation to compounds of formula (I).
The compounds of the invention can exist in unsolvated as well as solvated forms, including hydrated forms, such as hemi-hydrates. In general, the solvated forms, with pharmaceutically acceptable solvents such as water and ethanol among others are equivalent to the unsolvated forms for the purposes of the invention.
The term "pharmaceutically acceptable salt, ester, amide, and prodrug" as used herein, refers to carboxylate salts, amino acid addition salts, zwitterions, esters, amides, and prodrugs of compounds of formula (I) which are within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response, and the like, are commensurate with a reasonable benefit/risk ratio, and are effective for their intended use.
The compounds of the present invention can be used in the form of pharmaceutically acceptable salts derived from inorganic or organic acids. The term "pharmaceutically acceptable salt" means those salts which are, within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response and the like and are commensurate with a reasonable benefit/risk ratio. Pharmaceutically acceptable salts are well-known in the art. The salts can be prepared in situ during the final isolation and purification of the compounds of the present invention or separately by reacting a free base function with a suitable organic acid.
Representative acid addition salts include, but are not limited to acetate, adipate, alginate, citrate, aspartate, benzoate, benzenesulfonate, bisulfate, butyrate, camphorate, camphorsufonate, digluconate, glycerophosphate, hemisulfate, heptanoate, hexanoate, fumarate, hydrochloride, hydrobromide, hydroiodide, 2-hydroxyethansulfonate (isethionate), lactate, maleate, methanesulfonate, nicotinate, 2-naphthalenesulfonate, oxalate, pamoate, pectinate, persulfate, 3-phenylpropionate, picrate, pivalate, propionate, succinate, sulfate, bis(tartrate), tartrate, (L) tartrate, bis((L) tartrate), (D) tartrate, bis((L) tartrate), (DL) tartrate, b1S((DL) tartrate), meso-tartrate, bis(meso tartrate), thiocyanate, phosphate, glutamate, bicarbonate, p-toluenesulfonate and undecanoate. Examples of acids which can be employed to form pharmaceutically acceptable acid addition salts include such inorganic acids as hydrochloric acid,.hydrobromic acid, sulphuric acid and phosphoric acid and such organic acids as malefic acid, fumaric acid, succinic acid and citric acid.
Basic addition salts can be prepared in situ during the final isolation and purification of compounds of this invention by reacting a carboxylic acid-containing moiety with a suitable base such as the hydroxide; carbonate or bicarbonate of a pharmaceutically acceptable metal cation or with ammonia or an organic primary, secondary or tertiary amine.
Pharmaceutically acceptable salts include, but are not limited to, cations based on alkali metals or alkaline earth metals such as lithium, sodium, potassium, calcium, magnesium and aluminum salts and the like and nontoxic quaternary ammonia and amine cations including ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, diethylamine, ethylamine and the like. Other representative organic amines useful for the formation of base addition salts include ethylenediamine, ethanolamine, diethanolamine, piperidine, piperazine and the like. Preferred salts of the compounds of the present invention include phosphate, tris and acetate.
The term "pharmaceutically acceptable prodrug" or "prodrug"as used herein, represents those prodrugs of the compounds of the present invention which are, within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irntation, allergic response, and the like, commensurate with a reasonable benefit/risk ratio, and effective for their intended use.
Prodrugs of the present invention may be rapidly transformed in vivo to compounds of formula (I), for example, by hydrolysis in blood.
2~2 The term "pharmaceutically acceptable ester" or "ester" as used herein, refers to esters of compounds of the present invention which hydrolyze in vivo and include those that break down readily in the human body to leave the parent compound or a salt thereof.
Examples of pharmaceutically acceptable, non-toxic esters of the present invention include C~-to-C6 alkyl esters and CS-to-C~ cycloalkyl esters, although CI-to-C4 alkyl esters are preferred. Esters of the compounds of formula (I) may be prepared according to conventional methods.
The term "pharmaceutically acceptable amide" or "amide" as used herein, refers to non-toxic amides of the present invention derived from ammonia, primary C~-to-C6 alkyl amines and secondary C1-to-C6 dialkyl amines. In the case of secondary amines, the amine may also be in the form of a 5- or 6-membered heterocycle containing one nitrogen atom.
Amides derived from ammonia, C1-to-C3 alkyl primary amides and C1-to-CZ
dialkyl secondary amides are preferred. Amides of the compounds of formula (I) may be prepared according to conventional methods.

Claims (165)

What is claimed is:
1. A method of treating sexual dysfunction in a mammal comprising administering to said mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein A is selected from the group consisting of aryl, arylalkyl, cycloalkyl, cycloalkylalkyl, heterocycle, and heterocyclealkyl;
L is selected from the group consisting of -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- wherein the left end of said -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, or -C(S)N(R7)- is attached to A and the right end is attached to D;
D is selected from the group consisting of alkylene, fluoroalkylene, and hydroxyalkylene;
Z is selected from the group consisting of N, C and CR B;
R A is selected from the group consisting of hydrogen and alkyl;
R B is selected from the group consisting of hydrogen, alkyl, and halogen;
--- is a bond when Z is C and --- is absent when Z is N or CR B;
B is selected from the group consisting of R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl;

Z1 and Z2 are each independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, and formyl;
Z3 and Z4 are each independently selected from the group consisting of hydrogen, alkyl, aryl, and arylalkyl;
X is selected from the group consisting of N(R6), O and S;
Y is selected from the group consisting of C(R4) and N;
R6 is selected from the group consisting of hydrogen and alkyl; and R7 is selected from the group consisting of hydrogen and alkyl.
2. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
3. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;

R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
4. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
5. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;

--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
6. The method according to claim 1 wherein A is aryl wherein the aryl is ,3-dihydro-1H-inden-5-yl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
7. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
8. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2, R3, and R4 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
9. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
10. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X is N(R6), O, or S;

Y is N;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
11. The method according to claim 1 wherein A is heterocycle;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
12. The method according to claim 1 wherein A is heterocycle wherein the heterocycle is selected from the group consisting of benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, and thienyl wherein the heterocycle is independently substituted with 0, 1, 2, or 3 substituents selected from the group consisting of alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, and nitro;
B is Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
13. The method according to claim 1 wherein A is heterocycle wherein the heterocycle is selected from the group consisting of benzimidazolyl, benzothiazolyl, pyrazolyl, pyridinyl, or thienyl independently substituted with 0, 1, 2, or 3 substituents selected from the group consisting of alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, and nitro;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
14. The method according to claim 1 wherein A is cycloalkyl;
B is
15. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
16. The method according to claim 1 wherein A is arylalkyl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
17. The method according to claim 1 wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;

Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
18. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
19. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;
R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is CR B;
R B is hydrogen;

--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
20. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
21. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
22. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
23. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is X is N(R6), O, or S;
Y is N;
R2 and R3 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
24. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
25. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is Z is CR B;
R B is hydrogen;
--- is absent;
L is -N(R7)C(O)-;
D is -CH2-; and R2, R3, and R4 are hydrogen.
26. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
27. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
28. The method according to claim 1 wherein A is cycloalkyl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
29. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
30. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
31. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;

R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
32. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
33. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;

--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
34. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond;
L is -N(R7)C(O)-.
35. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is X is N(R6), O, or S;
Y is C(R4);
R2 and R3 are hydrogen;
R4 is selected from the group consisting of hydrogen, alkyl, and cyano;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
36. The method according to claim 1 wherein A is cycloalkyl;

B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
37. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
38. The method according to claim 1 wherein A is aryl;
B is Z is N;

--- is absent; and L is -C(O)N(R7)-.
39. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;
R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
40. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -C(O)N(R7)-.
41. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
42. The method according to claim 1 wherein A is aryl;
B is Z is N;
--- is absent; and L is -C(O)N(R7)-.
43. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;

B is R2, R3, and R4 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
44. The method according to claim 1 wherein A is cycloalkyl;
B is z is N;
--- is absent; and L is -C(O)N(R7)-.
45. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
303~

--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
46. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
47. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;
R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
304~

D is -CH2-; and L is -C(O)N(R7)-.
48. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
49. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
50. The method according to claim 1 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
51. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
52. The method according to claim 1 wherein A is aryl;
B is Z is CR B;

--- is absent; and L is -C(O)N(R7)-.
53. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
54. The method according to claim 1 wherein A is cycloalkyl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
55. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
56. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
57. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkoxy, alkyl, alkylthio, cyano, halogen, hydroxy, nitro, -NZ1Z2, and (NZ3Z4)alkyl;
R2 is selected from the group consisting of hydrogen, alkoxy, cyano, halogen, and hydroxy;
R3 is selected from the group consisting of hydrogen and hydroxy;
R4 and R5 are hydrogen;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
58. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
59. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;

R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
60. The method according to claim 1 wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
61. The method according to claim 1 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
62. The method according to claim 1 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X is N(R6), O, or S;
Y is N;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
63. The method according to claim 1 wherein A is cycloalkyl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
64. The method according to claim 1 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
65. The method according to claim 1 wherein the compound of formula (I) is selected from the group consisting of 2-[4-(2-methoxyphenyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
2-[4-(2-cyanophenyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-pyrimidinyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-methylphenyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(2-nitrophenyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-methylphenyl)-2-(4-phenyl-1-piperazinyl)acetamide;
N-(3-cyanophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
N-(4-bromo-3-methylphenyl)-2-[4-(2-cyanophenyl)-1-piperazinyl]acetamide;
2-[4-(2-cyanophenyl)-1-piperazinyl]-N-phenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-phenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,5-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,3-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methylphenyl)acetamide;

2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,5-dimethylphenyl)acetamide;
N-(3-chlorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,4,5-trimethoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-fluoro-5-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-5-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluoro-3-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-phenyl-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-methylphenyl)acetamide;
2-[4-(2-methoxyphenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-fluorophenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-methylphenyl)-1-piperidinyl]acetamide;
2-[4-(3-fluorophenyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(6-oxo-1(6H)-pyridazinyl)-1-piperidinyl]acetamide;
N-(2,6-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(2,5-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(4-bromophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;

N-(2-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,5-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
ethyl 4-({[4-(2-pyridinyl)-1-piperidinyl]acetyl}amino)benzoate;
N-(3-chloro-4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-cyanophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl] acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-(4-phenyl-3,6-dihydro-1(2H)-pyridinyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetamide;
N-(2,4-difluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,5-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-cyclohexyl-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
ethyl 4-[(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylacetyl)amino]benzoate;
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2-cyanophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]
acetamide;

2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(4-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,3-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3,5-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3,5-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
N-Cyclohexyl-2-(3',4',5',6'-tetrahydro-2'H-[2,4']bipyridinyl-1'-yl) acetamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}-3-methylbenzamide;
3-methyl-N-{[4-(2-pyrimidinyl)-1-piperazinyl]methyl}benzamide;
3-methyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
3-methyl-N-[(4-phenyl-1-piperazinyl)methyl]benzamide;
N-{[4-(2-methoxyphenyl)-1-piperazinyl]methyl}-3-methylbenzamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}-2-methylbenzamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}-4-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-3-methylbenzamide;
N-{[4-(3-cyanophenyl)-1-piperazinyl]methyl}-3-methylbenzamide;
N-{[4-(3-cyanophenyl)-1-piperazinyl]methyl}-2-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-4-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-2-methylbenzamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(2-chlorophenyl)-1-piperazinyl]methyl}benzamide;
3-chloro-N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}benzamide;
4-chloro-N-{[4-(2-methoxyphenyl)-1-piperazinyl]methyl}benzamide;
2-chloro-N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-2-(trifluoromethyl)benzamide;
N-{[4-(2-cyanophenyl)-1-piperazinyl]methyl}benzamide;

N-{[4-(2-methoxyphenyl)-1-piperidinyl]methyl}-3-methylbenzamide;
3-methyl-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
3-methyl-N-[(4-phenyl-3,6-dihydro-1(2H)-pyridinyl)methyl]benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methylbenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methoxybenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-fluorobenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-difluorobenzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-3-pyridinylacetamide;
2-(1-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridiniumn N-oxide;
N-2-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-cyclohexylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-5,6,7,8-tetrahydro-1-naphthalenylacetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}cyclohexanecarboxamide;
3,4-difluoro-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
3-chloro-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
2,3-dimethyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-(trifluoromethyl)benzamide;
3-chloro-N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)cyclohexanecarboxamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,4-difluorobenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethoxybenzamide;
N-(3-methylphenyl)-2-(4-phenyl-1-piperidinyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
N-1-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
3-methyl-N-{[2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3,5-dimethyl-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethylbenzamide;

3-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
N-[(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]-3-methylbenzamide;
N-(2,6-dimethylphenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,4-difluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(2,3-dichlorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-thienyl)-3,6-dihydro-1(2H)-pyridinyl]-N-(3-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4-difluorophenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl] acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl] acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,3-dichlorophenyl)acetamide;
3-methyl-N-{[4-(6-oxo-1(6H)-pyridazinyl)-1-piperidinyl]methyl}benzamide;

N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-adamantanecarboxamide;
3-methyl-N-{[4-(1,3-thiazol-2-yl)-3,6-dihydro-1(2H)-pyridinyl]methyl}benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-1,2,3,4-tetrahydro-1-naphthalenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1S)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1R)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
N-(2,6-diethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trichlorophenyl)acetamide;
N-(2,6-diethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trichlorophenyl)acetamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}cyclohexanecarboxamide;
N-(2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-benzyl-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(4-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3,4-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;

3-chloro-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
4-fluoro-3-methyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-4-fluoro-3-methylbenzamide;
3-methyl-N-{[4-(1,3-oxazol-2-yl)-3,6-dihydro-1(2H)-pyridinyl]methyl}benzamide;
2-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(2,6-dimethylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-methyl-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;
N-(2-ethyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-isopropyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-chloro-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methoxy-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-ethyl-6-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-isopropyl-6-methylphenyl)acetamide;
N-(2-chloro-6-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methoxy-6-methylphenyl)acetamide;
3-chloro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-methyl-N-{[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methyl-N-{[(2R)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(2R)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methoxy-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
4-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-naphthamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-3-fluorobenzamide;
3-methyl-N-{[4-(1,3-thiazol-2-yl)-1-piperidinyl]methyl}benzamide;
2-(1-{2-[(4-fluoro-2-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;

2-(1-{2-[(4-fluoro-3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(3-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(2-fluoro-5-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{1-methyl-2-[(3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(4-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(2-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
N-(3-methylphenyl)-2-{4-[3-(trifluoromethyl)-2-pyridinyl]-1-piperazinyl}acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-3,6-dihydropyridin-1(2H)-yl]acetamide;
N-(3-methylphenyl)-2-(4-thien-2-yl-3,6-dihydropyridin-1(2H)-yl)acetamide;
3-methyl-N-[(4-thien-2-yl-3,6-dihydropyridin-1(2H)-yl)methyl]benzamide;
2-(1-{2-[(3-chlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[4-(1-methyl-1H-imidazol-2-yl)-3,6-dihydropyridin-1(2H)-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-nitropyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(3-chloropyridin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(1-{2-oxo-2-[(2,4,6-tribromo-3-methylphenyl)amino]ethyl}piperidin-4-yl)pyridinium N-oxide;
2-{4-[3-(aminomethyl)pyridin-2-yl]piperazin-1-yl}-N-(3-methylphenyl)acetamide;
2-[4-(2-isopropoxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperazin-1-yl)nicotinamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-pyridin-2-ylpiperazin-1-yl]ethanethioamide;
2-(1-{[(4-bromo-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-[3-(methylthio)phenyl]acetamide;
N-(3-tert-butylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(2-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(4-hydroxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(2-ethoxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-{4-[2-(methylthio)phenyl]piperazin-1-yl}acetamide;

2-[4-(2-fluorophenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(3-fluorophenyl)acetamide;
N-(3-bromophenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)ethanethioamide;
2-[4-(2-aminophenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-nitrophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
2-[4-(2-cyanophenyl)piperazin-1-yl]-N-(3-nitrophenyl)acetamide;
N-(3-cyanophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
N-(3-cyanophenyl)-2-[4-(2-cyanophenyl)piperazin-1-yl] acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(pentafluorophenyl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(1,3-dimethyl-1H-pyrazol-5-yl)acetamide;
N-(3-benzylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(2-chlorophenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-(3-cyanopyrazin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-pyridin-2-ylpiperazin-1-yl)-N-(2-{[(4-pyridin-2-ylpiperazin-1-yl)acetyl]amino}phenyl)acetamide;
N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)ethanethioamide;
2-[4-(1-methyl-1H-imidazol-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)piperidin-1-yl]acetamide;
N-(4-iodo-3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)acetamide;
2-(4-fluoro-4-phenylpiperidin-1-yl)-N-(3-methylphenyl)acetamide;
2-[4-(5-hydroxypyridin-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;
N-(5-fluoro-1,3-benzothiazol-2-yl)-2-[4-(3-methoxyphenyl)piperazin-1-yl]acetamide;
2-[4-(2-methoxyphenyl)piperazin-1-yl]-N-(1-methyl-1H-benzimidazol-2-yl)acetamide;
N-(3-methylphenyl)-2-[4-(3-methylthien-2-yl)-3,6-dihydropyridin-1(2H)-yl]acetamide;
2-(1-{2-[(3,5-dichlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,3-dichlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2-methoxy-6-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;

2-{1-[2-(1,1'-biphenyl-3-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{2-[(3-ethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(2,3-dihydro-1H-inden-5-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;
2-{1-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-1-ylamino)ethyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{2-[(3-isopropoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(4-bromo-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-(2-oxo-2-{[3-(trifluoromethoxy)phenyl]amino}ethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-methyl-2-nitrophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dimethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dichloro-3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(1,3-benzodioxol-5-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;
2-[1-(2-{[3-(methylthio)phenyl]amino}-2-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-chloro-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,5-dimethoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-(2-{[3-(dimethylamino)phenyl]amino}-2-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(3-isopropylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3-chloro-2-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
3-methyl-N-[2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]benzamide;

2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[(benzoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(4-chloro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-fluoro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[3-chloro-4-(trifluoromethoxy)benzoyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-ethoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dichlorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[4-methyl-3-(trifluoromethyl)benzoyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3,4-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-chloro-4-fluorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(pyridin-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-vinylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromo-3-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-{1-[(2-naphthoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(thien-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[(6-chloropyridin-3-yl)carbonyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-cyanobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-chloro-4-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[methyl(3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-nitrobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2-chloro-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-methoxy-2-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;

2-(1-{[(4-chloro-3-methoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
N-(3-methylphenyl)-2-(3-pyridin-2-ylpiperidin-1-yl)acetamide;
N-(3-methylphenyl)-2-(3-pyridin-2-ylpyrrolidin-1-yl)acetamide;
N-(1-methyl-1H-benzimidazol-2-yl)-2-[3-(1,3-thiazol-2-yl)piperidin-1-yl]acetamide;
N-(1-methyl-1H-benzimidazol-2-yl)-2-[3-(1,3-thiazol-2-yl)pyrrolidin-1-yl]acetamide;
2-(2-benzylpyrrolidin-1-yl)-N-(3-fluorophenyl)acetamide; and N-(4-fluorophenyl)-2-(3-thien-2-ylpyrrolidin-1-yl)acetamide.
66. The method according to claim 1 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl-4-piperidinyl)pyridinium N-oxide.
67. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
68. The method according to claim 67 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl)-4-piperidinyl)pyridinium N-oxide.
69. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
70. The method according to claim 69 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
71. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
72. The method according to claim 71 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
73. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
74. The method according to claim 73 wherein the compound of,formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
75. A method of treating male erectile dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
76. The method according to claim 75 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
77. A method of treating female sexual dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester; amide, or prodrug thereof.
78. The method according to claim 77 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
79. A method of treating a disorder selected from the group consisting of cardiovascular disorders, inflammatory disorders, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, schizophrenia, anxiety, mood disorders and depression in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
80. The method according to claim 79 wherein the compound of formula (I) is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
81. A compound of formula (II) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein A is selected from the group consisting of aryl, arylalkyl, cycloalkyl, and cycloalkylalkyl;
L is selected from the group consisting of -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- wherein the left end of the -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- is attached to A and the right end is attached to D;
D is selected from the group consisting of alkylene, fluoroalkylene, and hydroxyalkylene;
Z is selected from the group consisting of N, C and CR B;
R A is selected from the group consisting of hydrogen and alkyl;
R B is selected from the group consisting of hydrogen, alkyl, and halogen;
--- is a bond when Z is C and --- is absent when Z is N or CR B;
B is selected from the group consisting of R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl;
Z1 and Z2 are each independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, and formyl;
Z3 and Z4 are each independently selected from the group consisting of hydrogen, alkyl, aryl, and arylalkyl;
X is selected from the group consisting of N(R6), O and S;
Y is selected from the group consisting of C(R4) and N;
R6 is selected from the group consisting of hydrogen and alkyl; and R7 is selected from the group consisting of hydrogen and alkyl.
82. The compound according to claim 81 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
83. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
84. The compound according to claim 81 wherein A is aryl wherein the aryl is selected from the group consisting of tetrahydronaphthalenyl and 2,3-dihydro-1H-indenyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
85. The compound according to claim 81 wherein A is aryl;
B is Z is N;

--- is absent; and L is -N(R7)C(O)-.
86. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2, R3, and R4 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
87. The compound according to claim 81 wherein A is aryl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
88. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X is N(R6), O, or S;
Y is N;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
89. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
90. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;

Z is N;

--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
91. The compound according to claim 81 wherein A is arylalkyl;
B is Z is N;
--- is absent; and L is -N(R7)C(O)-.
92. The compound according to claim 81 wherein A is arylalkyl wherein the aryl of arylalkyl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
93. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
94. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R3 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
95. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent;
L is -N(R7)C(O)-.
96. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is X is N(R6), O, or S;
Y is N;
R2 and R3 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
97. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
98. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is Z is CR B;
R B is hydrogen;
--- is absent;
L is -N(R7)C(O)-;
D is -CH2-; and R2, R3, and R4 are hydrogen.
99. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
100. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
101. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is CR B;
--- is absent; and L is -N(R7)C(O)-.
102. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;

Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -N(R7)C(O)-.
103. The compound according to claim 81 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
104. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
105. The compound according to claim 81 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
106. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is X is N(R6), O, or S;
Y is C(R4);
R2 and R3 are hydrogen;
R4 is selected from the group consisting of hydrogen, alkyl, and cyano;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
107. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is C;
--- is a bond; and L is -N(R7)C(O)-.
108. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -N(R7)C(O)-.
109. The compound according to claim 81 wherein A is aryl;
B is Z is N;
--- is absent; and L is -C(O)N(R7)-.
110. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
111. The compound according to claim 81 wherein A is aryl;
B is Z is N;
--- is absent; and L is -C(O)N(R7)-.
112. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;

B is R2, R3, and R4 are hydrogen;
Z is N;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
113. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is N;
--- is absent; and L is -C(O)N(R7)-.
114. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is N;

--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
115. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
116. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
117. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
118. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
119. The compound according to claim 81 wherein A is aryl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
120. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, and R4 are hydrogen;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
121. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is CR B;
--- is absent; and L is -C(O)N(R7)-.
122. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;

B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is CR B;
R B is hydrogen;
--- is absent;
D is -CH2-; and L is -C(O)N(R7)-.
123. The compound according to claim 81 wherein A is aryl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
124. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, l, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
125. The compound according to claim 81 wherein A is aryl wherein the aryl is naphthyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
126. The compound according to claim 81 wherein A is aryl;
B is --- is a bond; and L is -C(O)N(R7)-.
127. The compound according to claim 81 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X is N(R6), O, or S;
Y is N;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
128. The compound according to claim 81 wherein A is cycloalkyl;
B is Z is C;
--- is a bond; and L is -C(O)N(R7)-.
129. The compound according to claim 81 wherein A is cycloalkyl wherein the cycloalkyl is selected from the group consisting of cyclohexyl and adamantyl;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
Z is C;
--- is a bond;
D is -CH2-; and L is -C(O)N(R7)-.
130. The compound according to claim 81 selected from the group consisting of N-(3-methylphenyl)-2-[4-(2-pyrimidinyl)-1-piperazinyl] acetamide;
N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-cyanophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-phenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,5-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,3-dimethylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2,5-dimethylphenyl)acetamide;
N-(3-chlorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl] acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]
acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(3,4,5-trimethoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[3-fluoro-5-(trifluoromethyl)phenyl]acetamide;

2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-5-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-fluoro-3-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-fluoro-3-methylphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-fluorophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-methoxyphenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(2-nitrophenyl)acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-phenyl-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-(4-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-methylphenyl)-2-[4-(6-oxo-1(6H)-pyridazinyl)-1-piperidinyl]acetamide;
N-(2,6-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(2,5-dimethylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-thienyl)-1-piperidinyl]acetamide;
N-(4-bromophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-nitrophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,5-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
ethyl 4-({[4-(2-pyridinyl)-1-piperidinyl]acetyl}amino)benzoate;
N-(3-chloro-4-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-cyanophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(3-methylphenyl)acetamide;

2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetamide;
N-(2,4-difluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,5-dimethylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-cyclohexyl-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
ethyl 4-[(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylacetyl)amino]benzoate;
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2-cyanophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(4-chlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,3-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(3,5-dichlorophenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(3,5-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
N-cyclohexyl-2-(3',4',5',6'-tetrahydro-2'H-[2,4']bipyridinyl-1'-yl)acetamide;

3-methyl-N-{[4-(2-pyrimidinyl)-1-piperazinyl]methyl}benzamide; 3-methyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-3-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-4-methylbenzamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-2-methylbenzamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
2-chloro-N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(3-cyano-2,-pyridinyl)-1-piperazinyl]methyl}-2-(trifluoromethyl)benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methylbenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-methoxybenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-fluorobenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-difluorobenzamide; N-2-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-cyclohexylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-5, 6,7, 8-tetrahydro-1-naphthalenylacetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluoro-2-methylphenyl)acetamide;
N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}cyclohexanecarboxamide;
3,4-difluoro-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
3-chloro-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
2,3-dimethyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3-(trifluoromethyl)benzamide;
3-chloro-N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)cyclohexanecarboxamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,4-difluorobenzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethoxybenzamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(3-nitrophenyl)acetamide;
N-1-adamantyl-2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]acetamide;
3-methyl-N-{[2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;

N-(3-methylphenyl)-2-[2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3,5-dimethyl-N-{[4-(2-pyridinyl)-1-piperidinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-3,5-dimethylbenzamide;
3-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
N-[(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]-3-methylbenzamide;
N-(2,6-dimethylphenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
N-(2,4-difluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-chloro-4-fluorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
N-(2,3-dichlorophenyl)-2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethyl)phenyl]acetamide;
2-[4-(3-cyano-2-thienyl)-3,6-dihydro-1(2H)-pyridinyl]-N-(3-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(4-fluorophenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4-difluorophenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[3-(trifluoromethyl)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[4-(trifluoromethoxy)phenyl]acetamide;

2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-[2-(trifluoromethyl)phenyl]acetamide;
2-(3-cyano-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,3-dichlorophenyl)acetamide;
3-methyl-N-{[4-(6-oxo-1(6H)-pyridazinyl)-1-piperidinyl]methyl}benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-adamantanecarboxamide;
3-methyl-N-{[4-(1,3-thiazol-2-yl)-3,6-dihydro-1(2H)-pyridinyl]methyl}benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-1,2,3,4-tetrahydro-1-naphthalenylacetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1S)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[(1R)-1,2,3,4-tetrahydro-1-naphthalenyl]acetamide;
N-(2,6-diethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperidinyl]-N-(2,4,6-trichlorophenyl)acetamide;
N,(2,6-diethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trifluorophenyl)acetamide;
N-(4-chloro-2,6-dimethylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,4,6-trichlorophenyl)acetamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}-3-(trifluoromethyl)benzamide;
3,5-dimethoxy-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-{[4-(2-pyridinyl)-1-piperazinyl]methyl}cyclohexanecarboxamide;
N-(2,6-dimethylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(4-fluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,4-difluorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2-methylphenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[3-(trifluoromethyl)phenyl]acetamide;
N-(3-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-benzyl-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethoxy)phenyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[2-(trifluoromethyl)phenyl]acetamide;

N-(4-chlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(2,3-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
N-(3,4-dichlorophenyl)-2-[4-(2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;
3-chloro-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl)benzamide;
4-fluoro-3-methyl-N-{[4-(2-pyridinyl)-1-piperazinyl]methyl]benzamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-4-fluoro-3-methylbenzamide;
3-methyl-N-{[4-(1,3-oxazol-2-yl)-3,6-dihydro-1(2H)-pyridinyl]methyl}benzamide;
2-methyl-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperidinyl]-N-(2,6-dimethylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-methyl-2-pyridinyl)-1-piperazinyl]acetamide;
2-[4-(3-cyano-2-pyridinyl)-1-piperazinyl]-N-[4-(trifluoromethyl)phenyl]acetamide;
N-(2-ethyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-isopropyl-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-chloro-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
N-(2-methoxy-6-methylphenyl)-2-[4-(2-pyridinyl)-1-piperidinyl]acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-ethyl-6-methylphenyl)acetamide;
2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-isopropyl-6-methylphenyl)acetamide;
N-(2-chloro-6-methylphenyl)-2-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)acetamide;
2-(3',6'-dihydro- 2,4'-bipyridin-1'(2'H)-yl)-N-(2-methoxy-6-methylphenyl)acetamide;
3-chloro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
3-methyl-N-{[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methyl-N-{[(2R)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]methyl}benzamide;
N-(3-methylphenyl)-2-[(2R)-2-methyl-4-(2-pyridinyl)-1-piperazinyl]acetamide;
3-methoxy-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
4-fluoro-N-[(3-methyl-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)methyl]benzamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2,6-dimethylphenyl)acetamide;
2-(3-chloro-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl)-N-(2-methylphenyl)acetamide;
N-(3',6'-dihydro-2,4'-bipyridin-1'(2'H)-ylmethyl)-1-naphthamide;
N-{[4-(3-cyano-2-pyridinyl)-1-piperazinyl]methyl}-3-fluorobenzamide;

3-methyl-N-{[4-(1,3-thiazol-2-yl)-1-piperidinyl]methyl}benzamide;
N-(3-methylphenyl)-2-{4-[3-(trifluoromethyl)-2-pyridinyl]-1-piperazinyl}acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)-3,6-dihydropyridin-1(2H)-yl]acetamide;
N-(3-methylphenyl)-2-(4-thien-2-yl-3,6-dihydropyridin-1(2H)-yl)acetamide;
3-methyl-N-[(4-thien-2-yl-3,6-dihydropyridin-1(2H)-yl)methyl]benzamide;
2-[4-(1-methyl-1H-imidazol-2-yl)-3,6-dihydropyridin-1(2H)-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(3-nitropyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(3-chloropyridin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-[4-[3-(aminomethyl)pyridin-2-yl]piperazin-1-yl}-N-(3-methylphenyl)acetamide;
2-[4-(2-isopropoxyphenyl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperazin-1-yl)nicotinamide;
N-(3-methylphenyl)-2-[(2S)-2-methyl-4-pyridin-2-ylpiperazin-1-yl]ethanethioamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-[3-(methylthio)phenyl]acetamide;
N-(3-tert-butylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(3-fluorophenyl)acetamide;
N-(3-bromophenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)ethanethioamide;
N-(3-nitrophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
N-(3-cyanophenyl)-2-(4-pyridin-2-ylpiperazin-1-yl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(pentafluorophenyl)acetamide;
2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]-N-(1,3-dimethyl-1H-pyrazol-5-yl)acetamide;
N-(3-benzylphenyl)-2-[4-(3-cyanopyridin-2-yl)piperazin-1-yl]acetamide;
2-[4-(3-cyanopyrazin-2-yl)piperazin-1-yl]-N-(3-methylphenyl)acetamide;
2-(4-pyridin-2-ylpiperazin-1-yl)-N-(2-{[(4-pyridin-2-ylpiperazin-1-yl)acetyl]amino}phenyl)acetamide;
N-(3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)ethanethioamide;
2-[4-(1-methyl-1H-imidazol-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;
N-(3-methylphenyl)-2-[4-(1,3-thiazol-2-yl)piperidin-1-yl]acetamide;
N-(4-iodo-3-methylphenyl)-2-(4-pyridin-2-ylpiperidin-1-yl)acetamide;
2-[4-(5-hydroxypyridin-2-yl)piperidin-1-yl]-N-(3-methylphenyl)acetamide;

N-(3-methylphenyl)-2-[4-(3-methylthien-2-yl)-3,6-dihydropyridin-1(2H)-yl]acetamide;
3-methyl-N-[2-(4-pyridin-2-ylpiperazin-1-yl)ethyl]benzamide;
N-(3-methylphenyl)-2-(3-pyridin-2-ylpiperidin-1-yl)acetamide;
N-(3-methylphenyl)-2-(3-pyridin-2-ylpyrrolidin-1-yl)acetamide;
N-(1-methyl-1H-benzimidazol-2-yl)-2-[3-(1,3-thiazol-2-yl)piperidin-1-yl]acetamide;
N-(1-methyl-1H-benzimidazol-2-yl)-2-[3-(1,3-thiazol-2-yl)pyrrolidin-1-yl]acetamide;
2-(2-benzylpyrrolidin-1-yl)-N-(3-fluorophenyl)acetamide; and N-(4-fluorophenyl)-2-(3-thien-2-ylpyrrolidin-1-yl)acetamide.
131. The compound according to claim 81 selected from the group consisting of 2-(1-{2-[(3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridiniumn N-oxide;
2-(1-{2-[(4-fluoro-2-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(4-fluoro-3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(3-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(2-fluoro-5-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{1-methyl-2-[(3-methylphenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(4-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(2-fluorophenyl)amino]-2-oxoethyl}-4-piperidinyl)pyridinium N-oxide;
2-(1-{2-[(3-chlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-oxo-2-[(2,4,6-tribromo-3-methylphenyl)amino]ethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromo-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dichlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,3-dichlorophenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2-methoxy-6-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(1,1'-biphenyl-3-ylamino)-2-oxoethyl]piperidin-4-yl}pyridinium N-oxide;

2-(1-{2-[(3-ethylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(2,3-dihydro-1H-inden-5-ylamino)-2-oxoethyl]piperidin-4-yl]pyridinium N-oxide;
2-{1-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-1-ylamino)ethyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{2-[(3-isopropoxyphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(4-bromo-2-methylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-[1-(2,-oxo-2-{[3-(trifluoromethoxy)phenyl]amino]ethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-methyl-2-nitrophenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dimethylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,6-dichloro-3-methylphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-{1-[2-(1,3-benzodioxol-5-ylamino)-2-oxoethyl]piperidin-4-yl]pyridinium N-oxide;
2-[1-(2-{[3-(methylthio)phenyl]amino-2,-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(5-chloro-2-methylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(2,5-dimethoxyphenyl)amino]-2-oxoethyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3,5-dimethoxyphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-[1-(2-{[3-(dimethylamino)phenyl]amino}-2-oxoethyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{2-[(3-isopropylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{2-[(3-chloro-2-methylphenyl)amino]-2-oxoethyl]piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;

2-{1-[(benzoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(4-chloro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-fluoro-3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[3-chloro-4-(trifluoromethoxy)benzoyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-ethoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dichlorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[4-methyl-3-(trifluoromethyl)benzoyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3,4-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-chloro-4-fluorobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(pyridin-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3,5-dimethylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-vinylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromo-3-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-{1-[(2-naphthoylamino)methyl]piperidin-4-yl}pyridinium N-oxide;
2-(1-{[(thien-2-ylcarbonyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-[1-({[(6-chloropyridin-3-yl)carbonyl]amino}methyl)piperidin-4-yl]pyridinium N-oxide;
2-(1-{[(3-cyanobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2,3-dibromo-5-methylbenzoyl)amino]methyl}-1,2,3,6-tetrahydropyridin-4-yl)pyridinium N-oxide;
2-(1-{[(4-bromobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-chloro-4-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[methyl(3-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-nitrobenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(2-chloro-5-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide;
2-(1-{[(3-methoxy-2-methylbenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide; and 2-(1-{[(4-chloro-3-methoxybenzoyl)amino]methyl}piperidin-4-yl)pyridinium N-oxide.
132. The compound according to claim 81 that is 2-(1-{[(3-methylbenzoyl)amino]methyl}-4-piperidinyl)pyridinium N-oxide.
133. A compound of formula (III) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein X1 is selected from the group consisting of a bond and CR B R C;
X2 is selected from the group consisting of a bond and CR D R E;
provided that when X1 is a bond, then X2 is CR D R E;
further provided that when X2 is bond, then X1 is CR B R C;
A is selected from the group consisting of aryl, arylalkyl, cycloalkyl, and cycloalkylalkyl;
L1 is selected from the group consisting of -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- wherein the left end of the -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- is attached to A and the right end is attached to D;
L2 is selected from the group consisting of a bond and alkylene;
D is selected from the group consisting of alkylene, fluoroalkylene, and hydroxyalkylene;
R A, R B, R C, R D, and R E are independently selected from the group consisting of hydrogen and alkyl;
B is selected from the group consisting of R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl;
Z1 and Z2 are each independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, and formyl;
Z3 and Z4 are each independently selected from the group consisting of hydrogen, alkyl, aryl, and arylalkyl;
X is selected from the group consisting of N(R6), O and S;
Y is selected from the group consisting of C(R4) and N;
R6 is selected from the group consisting of hydrogen and alkyl; and R7 is selected from the group consisting of hydrogen and alkyl.
134. The compound according to claim 133 wherein A is aryl;
B is X1 is CR B R C;
X2 is CR D R E; and L is -N(R7)C(O)-.
135. The compound according to claim 133 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
X1 is CR B R C;
X2 is CR D R E;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
136. The compound according to claim 133 wherein A is heterocycle;
B is X1 is CR B R C;
X2 is CR D R E; and L is -N(R7)C(O)-.
137. The compound according to claim 133 wherein A is heterocycle wherein the heterocycle is selected from the group consisting of benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, and thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from the group consisting of alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, and nitro;
B is R2 and R3 are hydrogen;
X1 is CR B R C;
X2 1S CR D R E;
X is N(R6), O, or S;
Y is N;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
138. The compound according to claim 133 wherein A is aryl;
B is X1 is a bond;
X2 is CR D R E; and L is -N(R7)C(O)-.
139. The compound according to claim 133 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
X1 is a bond;

X2 15 CR D R E;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
140. The compound according to claim 133 wherein A is heterocycle;
B is X1 is a bond;
X2 is CR D R E; and L is -N(R7)C(O)-.
141. The compound according to claim 133 wherein A is heterocycle wherein the heterocycle is selected from the group consisting of benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, and thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, and nitro;
B is R2 and R3 are hydrogen;
X1 is a bond;
X2 1S CR D R E;
X is N(R6), O, or S;
Y is N;
D is -CH2;
L2 is a bond; and L is -N(R7)C(O)-.
142. The compound according to claim 133 wherein A is aryl;
B is X1 is a bond;
X2 is CR D R E; and L is -N(R7)C(O)-.
143. The compound according to claim 133 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X1 is a bond;
X2 is CR D R E;
X is N(R6), O, or S;
Y is C(R4);
R4 is selected from the group consisting of hydrogen, alkyl, and cyano;
D is -CH2-;
L2 is a bond; and L is -N(R6)C(O)-.
144. The compound according to claim 133 wherein A is aryl;
B is X1 is CR B R C;
X2 is a bond; and L is -N(R7)C(O)-.
145. The compound according to claim 133 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, R4, and R5 are hydrogen;
X1 is CR B R C;
X2 is a bond;
D is -CH2-;
L2 is -CH2-; and L is -N(R7)C(O)-.
146. A method of treating sexual dysfunction in a mammal comprising administering to said mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein X1 is selected from the group consisting of a bond and CR B R C;
X2 is selected from the group consisting of a bond and CR D R E;
provided that when X1 is a bond, then X2 is CR D R E;
further provided that when X2 is bond, then X1 is CR B R C;
A is selected from the group consisting of aryl, arylalkyl, cycloalkyl, and cycloalkylalkyl;
L1 is selected from the group consisting of -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- wherein the left end of the -N(R7)C(O)-, -C(O)N(R7)-, -N(R7)C(S)-, and -C(S)N(R7)- is attached to A and the right end is attached to D;
L2 is selected from the group consisting of a bond and alkylene;
D is selected from the group consisting of alkylene, fluoroalkylene, and hydroxyalkylene;
R A, R B, R C, R D, and R E are independently selected from the group consisting of hydrogen and alkyl;
B is selected from the group consisting of R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, alkoxy, alkenyl, alkyl, alkylsulfinyl, alkylsulfonyl, alkylthio, alkynyl, alkoxycarbonyl, alkylcarbonyl, alkylcarbonyloxy, carboxy, cyano, formyl, halogen, haloalkoxy, haloalkyl, hydroxy, hydroxyalkyl, mercapto, nitro, -NZ1Z2, (NZ3Z4)alkyl, (NZ3Z4)carbonyl, and (NZ3Z4)sulfonyl;
Z1 and Z2 are each independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl, alkylsulfonyl, aryl, arylalkyl, arylalkylsulfonyl, arylsulfonyl, and formyl;
Z3 and Z4 are each independently selected from the group consisting of hydrogen, alkyl, aryl, and arylalkyl;
X is selected from the group consisting of N(R6), O and S;

Y is selected from the group consisting of C(R4) and N;
R6 is selected from the group consisting of hydrogen and alkyl; and R7 is selected from the group consisting of hydrogen and alkyl.
147. The method according to claim 146 wherein A is aryl;
B is X1 is CR B R C;
X2 is CR D R E; and L is -N(R7)C(O)-.
148. The method according to claim 146 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
X1 is CR B R C;
X2 is CR D R E;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
149. The method according to claim 146 wherein A is heterocycle;
B is X1 is CR B R C;
X2 is CR D R E; and L is -N(R7)C(O)-.
150. The method according to claim 146 wherein A is heterocycle wherein the heterocycle is selected from the group consisting of benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, and thienyl, wherein the heterocycle is substituted with 0, 1, 2, or 3 substituents independently selected from alkoxy, alkoxycarbonyl, alkyl, cyano, halogen, haloalkoxy, haloalkyl, and nitro;
B is R2 and R3 are hydrogen;
X1 is CR B R C;
X2 is CR D R E;
X is N(R6), O, or S;
Y is N;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
151. The method according to claim 146 wherein A is aryl;
B is selected from the group consisting of X1 is a bond;
X2 is CR D R E; and L is -N(R7)C(O)-.
152. The method according to claim 146 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1 is selected from the group consisting of hydrogen, alkyl, cyano, haloalkyl, halogen, nitro, (NZ3Z4)alkyl, and (NZ3Z4)carbonyl;
R2 and R4 are hydrogen;
R3 is selected from the group consisting of hydrogen and hydroxy;
X1 is a bond;
X2 1S CR D R E;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
153. The method according to claim 146 wherein A is heterocycle;
B is X1 is a bond;

X2 is CR D R E; and L is -N(R7)C(O)-.
154. The method according to claim 146 wherein A is heterocycle wherein the heterocycle is benzimidazolyl, benzothiazolyl, furyl, imidazolyl, 1,3-oxazolyl, pyrazinyl, pyrazolyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, 1,3-thiazolyl, and thienyl;
B is R2 and R3 are hydrogen;
X1 is a bond;
X2 is CR D R E;
X is N(R6), O, or S;
Y is N;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
155. The method according to claim 146 wherein A is aryl;
B is X1 is a bond;
X2 is CR D R E; and L is -N(R7)C(O)-.
156. The method according to claim 146 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R2 and R3 are hydrogen;
X1 is a bond;
X2 is CR D R E;
X is N(R6), O, or S;
Y is C(R4);
R4 is selected from the group consisting of hydrogen, alkyl, and cyano;
D is -CH2-;
L2 is a bond; and L is -N(R7)C(O)-.
157. The method according to claim 146 wherein A is aryl;
B is X1 is CR B R C;
X2 is a bond; and L is -N(R7)C(O)-.
158. The method according to claim 146 wherein A is aryl wherein the aryl is phenyl substituted with 0, 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkenyl, alkoxy, alkoxycarbonyl, alkyl, alkythio, benzyl, cyano, halogen, haloalkoxy, haloalkyl, methylenedioxy, nitro, phenyl, and -NZ1Z2;
B is R1, R2, R3, R4, and R5 are hydrogen;
X1 is CR B R C;
X2 is a bond;
D is -CH2-;
L2 is -CH2-; and L is -N(R7)C(O)-.
159. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a pharmaceutically acceptable carrier.
160. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a phosphodiesterase 5 inhibitor.
161. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with an adrenergic receptor antagonist.
162. A method of treating sexual dysfunction in a mammal comprising administering to the mammal a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof in combination with a dopamine agonist.
163. A method of treating male erectile dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
164. A method of treating female sexual dysfunction in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
165. A method of treating a disorder selected from the group consisting of cardiovascular disorders, inflammatory disorders, attention deficit hyperactivity disorder, Alzheimer's disease, drug abuse, Parkinson's disease, schizophrenia, anxiety, mood disorders and depression in a mammal comprising administering to the mammal in need of such treatment a therapeutically effective amount of a compound of formula (IV) or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof.
CA002486564A 2002-05-23 2003-05-19 Acetamides and benzamides that are useful in treating sexual dysfunction Abandoned CA2486564A1 (en)

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US10/154,373 US20030232836A1 (en) 2002-05-23 2002-05-23 Acetamides and benzamides that are useful in treating sexual dysfunction
US10/154,373 2002-05-23
US10/425,152 US20040029887A1 (en) 2002-05-23 2003-04-29 Acetamides and benzamides that are useful in treating sexual dysfunction
US10/425,152 2003-04-29
PCT/US2003/015868 WO2003099266A2 (en) 2002-05-23 2003-05-19 Acetamides and benzamides that are useful in treating sexual dysfunction

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FR2573075B1 (en) * 1984-09-14 1987-03-20 Innothera Lab Sa NEWS (PYRIDYL-2) -1 PIPERAZINES, THEIR PREPARATION PROCESS AND THEIR APPLICATION IN THERAPEUTICS
CA1340113C (en) * 1988-05-24 1998-11-03 Magid A. Abou-Gharbia Aryl-and heteroaryl piperazinyl carboxamides having central nervous system activity
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