AU2004202858B2 - FSH mimetics for the treatment of infertility - Google Patents

Description

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Applicant: APPLIED RESEARCH SYSTEMS ARS HOLDING N.V.

Invention Title: FSH MIMETICS FOR THE TREATMENT OF INFERTILITY The following statement is a full description of this invention, including the best method of performing it known to us: 2 FSH Mimetics for the Treatment of Infertility

BACKGROUND

This application claims the benefit of U.S. Provisional Application No.

60/095,712, filed August 7, 1998.

Field The present invention relates to non-peptidic amino derivatives, their therapeutic use, as well as pharmaceutical compositions comprising these derivatives.

In particular, the invention relates to cyclic and acyclic alpha- and betaaminocarboxamides. The compounds of the invention possess activity as Follicle Stimulating Hormone (FSH) agonists and are useful in the treatment of infertility.

Summary of the Related Art Annually in the U.S. there are 2.4 million couples experiencing infertility that are potential candidates for treatment. Follicle stimulating hormone, either extracted from urine or produced by recombinant DNA technology, is a parenterally-administered protein product used by specialists for ovulation induction (01) and for controlled ovarial hyperstimulation (COH). Whereas 01 is directed at achieving a single follicle to ovulate, COH is directed at harvesting multiple oocytes for use in various in vitro assisted reproductive technologies for in vitro fertilization). Clinical use of preparations containing FSH began in the 1960's.

Follicle stimulating hormone (FSH) is a pituitary-derived heterodimeric glycoprotein hormone that shares structural similarities with luteinizing hormone (LH) and thyroid stimulating hormone (TSH), both of which are also produced in the pituitary gland, and chorionic gonadotropin which is produced in the placenta. The hormones are relatively large (28-38 kilodaltons) and are composed of a common a subunit non-covalently bound to a distinct p subunit that confers receptor binding specificity.

The cellular receptors for these hormones are known to be members of the G protein-coupled class of membrane-bound receptors, which when activated stimulate an increase in the activity of adenylyl cyclase. This results in an increase in the level of the intracellular second messenger adenosine 5'-monophosphate (cAMP), which in turn causes increased steroid synthesis and secretion. Hydropathicity plots of the amino acid sequences of these receptors reveal three general domains: a hydrophilic amino-terminal region, considered to be the amino-terminal extracellular domain, seven hydrophobic segments of membrane- spanning length, considered H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 3 to be the transmembrane domain, and a carboxy-terminal region that contains potential phosphorylation sites (serine, threonine, and tyrosine residues), considered to be the carboxy-terminal intracellular or cytoplasmic domain. The glycoprotein hormone receptor family is distinguished from other G protein-coupled receptors, such as the p2-adrenergic, rhodopsin, and substance K receptors, by the large size of the hydrophilic amino-terminal domain, which is involved in hormone binding.

The FSH receptor is expressed on testicular Sertoli cells and ovarian granulosa cells. While there has been a recognized need for providing essentially pure human FSH receptor, purification of naturally derived preparations is not practical and would likely be insufficient to permit determination of the amino acid sequence. Recently, one group has cloned the cDNA encoding the rat FSH receptor, deduced the amino acid sequence, and expressed it in mammalian cells (Sprengel, Mol. Endocrinol. 4: 525 (1990)). Another group, attempting to clone the TSH receptor, apparently also cloned and identified a portion of the transmembrane region of the human FSH receptor (Parmentier, Science 246: 1620 (1989)).

Use of FSH is limited by its high cost, lack of oral dosing, and need of extensive monitoring by specialist physicians. Hence, identification of a non-peptidic small molecule substitute for FSH that could potentially be developed for oral administration is desirable.

SUMMARY

We have now found non-peptidic compounds for the treatment of infertility that mimic the action of FSH. Such compounds have superior convenience of use compared to FSH due to their oral bioavailability. They are suitable for prescription by a Ob/Gyn, require minimal supervision, and have substantially lower costs compared to FSH treatment.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 depicts the scheme for the synthesis of the compounds of Formula XVI and Formula XVII.

Figure 2 depicts the scheme for the synthesis of the compound of Formula

XVIII.

Figure 3 depicts the scheme for the synthesis of the compound of Formula XIX.

Figure 4 depicts the scheme for the synthesis of the compound of Formula

XXV.

Figure 5 depicts the scheme for the synthesis of the compound of Formula

XXVI.

H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 4 Figure 6 displays the results of LDR analysis of compounds XVI, XVII, and XIX, compared to FSH.

Figure 7 displays the results of the primary rat granulosa cell bioassay for compounds XVI and XVII, compared to FSH.

DETAILED DESCRIPTION The present application relates to a general class of non-peptidic amino derivative having the general structure of Formula I, R3

R

4

I

Y W I I

R

5 Z R'/N R 2 wherein,

R

1

R

3

R

4 and R 5 are each independently hydrogen, C 1

-C

10 alkyl, C 1

-C

1 0 alkyl substituted with one or more substituents, C 2

-C

1 0 alkenyl, C 2

-C

10 alkenyl substituted with one or more substituents, C 2

-C

1 0 alkynyl, C 2

-C

10 alkynyl substituted with one or more substituents, C 1

-C

8 alkoxy, C 1

-C

8 alkoxy substituted with one or more substituents, C 2

-C

8 alkoxycarbonyl, C 2

-C

8 alkoxycarbonyl substituted with one or more substituents, C 1

-C

8 thioalkyl, C 1

-C

8 thioalkyl substituted with one or more substituents,

C

2

-C

8 acyl, C 2

-C

8 acyl substituted with one or more substituents, C 2

-C

8 acyloxy, C 2

-C

8 acyloxy substituted with one or more substituents, aryloxy, aryl, aryl substituted with one or more substituents, C 3

-C

7 cycloalkyl, C 3

-C

7 cycloalkyl substituted with one or more substituents, C 3

-C

7 heterocycle, or C 3

-C

7 heterocycle substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring;

R

2 is hydrogen, straight or branched Cl-C 6 alkyl or C 3

-C

7 cycloalkyl or C3-C 7 cycloalkyl substituted with one or more substituents, C 3

-C

7 heterocycle, C 3

-C

7 heterocycle substituted with one or more substituents, aryl, aryl substituted with one or more substituents, heteroaryl, heteroaryl substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; or R 2 together with R' forms a C 2

-C

7 heterocycle, C 2

-C

7 heterocycle substituted with one or more substituents, heteroaryl, or heteroaryl substituted with one or more substituents; W is carbonyl amido amidoalkyl (NH(C=0)CH 2 imino (C=NH), thiocarbonyl sulfonyl (SO 2 methylene (CH 2 or methylene substituted with one H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 or more substituents; X is CH or N; Y is CH or N; and Z is carbonyl amino imino sulfonyl (SO 2 or (C=0)NH; or Z, together with R 1 N, W, X, and Y, forms a Cs-C7 heterocyclic ring in which R 1 is a direct bond or a C1-C2 alkylene.

With reference to Formula I, FSH agonists are cyclic compounds wherein Z together with R 1 N, W, X, and Y form a C5-C7 heterocyclic ring in which R 1 is a direct bond or a C1-C2 alkylene and which is substituted with one or more substituents, R3

R

4 1

/X

Y W

RZ-R

1

-N

I I Also with reference to Formula I, additional FSH agonists are cyclic compounds wherein R 2 and R 3 form a C5-C7 heterocycle substituted with one or more substituents: R3 -R 2

III

R

5 z Within this general class the present invention provides compounds of Formula

IV-A,

R

3

R

9 I I Z N

R

5 R1 N R 2

IV-A

and pharmaceutically acceptable addition salts thereof, wherein:

R

3 and R 9 are each independently hydrogen, halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, Ci-C5 alkyl or alkenyl or arylalkyl imino, azido, H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 -6mercapto, carboxamido, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C1-C alkyl, C1-C8 alkenyl, C1-C8 alkoxy, C-C8 alkoxycarbonyl, C2-C8 acyl, 01-08 alkylthio, arylalkylthio, arylthio, C1-C8 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C1-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C1-C N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, C1-C5 alkyl or alkenyl or arylalkyl ester, C1-C7 cycloalkyl, aroyl, aryloxy, benzyloxy, benzyloxy substituted with one or more substituents, aryl, aryl substituted with one or more substituents, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; or R 3 and R 9 are each independently -NR6R7 or -(CH2),NRrR 7 where s is 1-6 and R6 and R 7 are as defined in section of the definition of substituent, below; or

R

3 and R 9 together form a substituted or unsubstituted C3-C7 cycloalkyl or C3-C7 heterocycle spiro ring, or such a ring fused to a cycloalkyl, heterocyclic or aromatic ring, to make a compound of Formula IV-B, Y pW I I R N R2

IV-B

R

1 is a carbazolyl substituted with one or more substitutents;

R

5 is a heterocyclic ring substituted with one or more substitutents;

R

4 is hydrogen, C 1

-C

1 0 alkyl, C 1

-C

1 0 alkyl substituted with one or more substituents, C2- Clo alkenyl, C 2 -Co 10 alkenyl substituted with one or more substituents, C2-C 1 0 akynyl, C2- Co akynyl substituted with one or more substituents, C1-C8 alkoxy, C1-C8 alkoxy substituted with one or more substituents, C2-C8 alkoxycarbonyl, C2-C8 alkoxycarbonyl substituted with one or more substituents, C-C8 thioalkyl, C1-C8 thioalkyl substituted with one or more substituents, C2-C8 acyl, 02-08 acyl substituted with one or more substituents, C2-C8 acyloxy, C2-C8 acyloxy substituted with one or more substituents, aryloxy, aryl, aryl substituted with one or more substituents, C3-C7 cycloalkyl, C3-C7 cycloalkyl substituted with one or more substituents, C3-C7 heterocycle, or C3-C7 heterocycle substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring;

R

2 is hydrogen, straight or branched C1-C6 alkyl or C3-C7 cycloalkyl or C3-C7 cycloalkyl substituted with one or more substituents, C3-C7 heterocycle, C3-C7 heterocycle substituted with one or more substituents, aryl, aryl substituted with one or more H:\ShonaI\Keep\Speci\P534?8 DIVISIONAL SPECI 25/06/04 -7 substituents, heteroaryl, heteroaryi substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; W is carbonyl amido amidoalkyl (NH(C=0)0H2-), imino (C=NH), thiocarbonyl sulfonyl (SO 2 methylene (OH 2 or methylene substituted with one or more substituents; Y is OH or N; Z is carbonyl amino imino sulfonyl (S02), or (0=O)NH; and the substituents for R 3 and R 4 are independently halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, 01-05 alkyl or alkenyl or arylalkyl imino, carbamoyl, azido, carboxamido, mercapto, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, 0 1

-C

8 alkyl, 0j-08 alkenyl, Cj-08 alkoxy, 01-08 alkoxycarbonyl, aryloxycarbonyl, 0 2

-O

8 acyl, 01-08 alkylthio, arylalkylthio, arylthio, 0j- 08 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, Cj-08 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, 01-06 N-alkyl carbamoyl, C2-C15 N, N-dialkylcarbamoyl, 03-07 cycloalkyl, aroyl, aryloxy, arylalkyl ether, aryl, aryl fused to a cycloalkyl or heterocycle or another aryl ring, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic, or aromatic ring; or NR3R where R 6 and R 7 are each independently hydrogen, cyano, oxo, carboxamido, amidino, Cj-08 hydroxyalkyl, Cl-C 3 alkylaryl, aryl-0 1

-O

3 alkyl, Cj-C8 alkyl, 0l-Ca alkenyl, 01-08 alkoxy, 01-C8 alkoxycarbonyl, aryloxycarbonyl, aryl- 01-03 akoxycarbonyl, 02-0s acyl, 0l-O8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, aroyl, aryl, aryl fused to a cycloalkyl or heterocyclic or another aryl ring, 03-07 cycloalkyl, C3- 07 heterocycle, or any of these rings fused or spiro-fused to a cycloakyl or heterocyclic or aromatic ring; or R 6 and R 7 are taken together to form -(0H 2 )mB(0H 2 )n where B is -0(H)(R 8

N(R

8 or where m and n are independently 1 to 3, r is 0 to 2, and R 8 is defined the same way as R3; or -(0H 2 ),NR 6 R 7 where s is 1-6 and R3 and R 7 are as defined in section of the definition of substituent, above; and the substituents for R 5 are independently halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, Cjalkyl or alkenyl or arylalkyl imino, carbamoyl, azido, carboxamido, mercapto, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, 0 1

-C

8 alkyl, 01-083 alkenyl, 01-08 alkoxy, Cj- 08 alkoxycarbonyl, aryloxycarbonyl, 02-08 acyl, 01-08 alkylthio, arylalkylthio, arylthio, 01-08 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, 01-08 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, 0l-Cr, N-alkyl carbamoyl, 02-015 N, N-dialkylcarbamoyl, 03-07 cycloalkyl, aroyl, aryloxy, arylalkyl ether, aryl, aryl fused to a cycloalkyl or heterocycle or another Hb\Shona1\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 8 aryl ring, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic, or aromatic ring; or

-NR

6

R

7 where R 6 and R 7 are each independently hydrogen, cyano, oxo, carboxamido, amidino, C1-C8 hydroxyalkyl, C1-C 3 alkylaryl, aryl-C1-C 3 alkyl, C0-C8 alkyl, C-C8 alkenyl, C0-Cs alkoxy, C 1

-C

8 alkoxycarbonyl, aryloxycarbonyl, aryl- C1-C3 akoxycarbonyl, C1-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, aroyl, aryl, aryl fused to a cycloalkyl or heterocyclic or another aryl ring, C3-C7 cycloalkyl, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloakyl or heterocyclic or aromatic ring; or R 6 and R 7 are taken together to form -(CH 2 )mB(CH 2 )n where B is -C(H)(R 8

-N(R

8 or where m and n are independently 1 to 3, r is 0 to 2, and R 8 is defined the same way as R 6 or

-(CH

2 )sNR6R 7 where s is 1-6 and R 6 and R 7 are as defined in section of the definition of substituent, above.

The present application also generally describes FSH agonists which are compounds of Formula V,

R

9

YI

R

5 Z R1N

R

2

V

wherein R 3 and R 4 together with the C and Y to which they are bound, respectively, form a substituted or unsubstituted aryl, substituted or unsubstituted C3-C 7 cycloalkyl or C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring, and R 1

R

2

R

3

R

5

R

9 W, Y, and Z are as defined for Formula I.

Also with reference to Formula I, additional FSH agonists are cyclic aaminocarboxamides wherein X CH, Y N, and R 3 and R 4 together with the carbon and nitrogen atoms to which they are attached form a heterocyclic or heteroaromatic ring, H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 9 B A R2 N W R'

/Z

R

VI

wherein R 1

R

2

R

5 W and Z are as defined for Formula I; n 0 or 1; and A and B are each independently -CH 2 or where R 1 0 is hydrogen, hydroxy, amino, amino substituted with one or more substituents, C0-C6 alkoxy, C-C6 alkyl, C 1

-C

6 alkyl substituted with one or more substituents, C1-C6 alkoxycarbonyl, cyano, Ci-Ce aminoalkyl, or -(CH 2 )sNR 6

R

7 where s, R 6 and R 7 are as defined for Formula I.

Additional FSH agonists described in the application are compounds of Formula VII,

IR

R4

X

Y W R1N R 2

VII

wherein R 3 and W form a substituted or unsubstituted aryl, substituted or unsubstituted C3-C7 cycloalkyl, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring, and R 1

R

2

R

4

R

5 X, Y, and Z are as defined for Formula I.

With reference to generally described Formulae III and V, or V and VII, FSH agonists are compounds wherein rings are combined to form fused bicyclic rings, R3- R 2 4 Y \W NR1 or I N R5 R 5 R "-R2

R

5 VIII-A

VIII-B

wherein the rings in VIII-A and VIII-B are defined the same way as the corresponding rings in Formulae III, V, and VII.

H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 10 With reference to generally described Formulae I and V, additional FSH agonists include compounds wherein Y N and R 3 and R 4 together with the carbon and nitrogen atoms to which they are attached form a heterocyclic or heteroaromatic ring, R12 R M R13 (n "k R14 N W I I Z N

R

5

R

1

R

2

IX

wherein R 1 R R 5

R

9 W, and Z are as defined for Formula I;

R

1 1

R

12 and R 1 3 are defined the same way as R 9 and additionally, each of R 9

R

1 2 and R 1 3 either independently or in combination are capable of forming a spiro or fused or bridged ring; n 0 or 1; and L and M are independently CH, N, O, or S, provided L and M are not both heteroatoms and when L is 0 or S there is no R 1 3 and when M is 0 or S there is no R 2 With reference to Formulae I and IV, FSH agonists also include acyclic aaminocarboxamides and spiro-ring containing ca-aminocarboxamides of Formula X, R2

R

3

R

9 R 2 N

I

R5Z O R5

R

5 X-A X-B wherein R 1

R

2

R

3

R

4

R

5

R

9 Z and the spiro ring are as defined for Formulae I and

IV.

With reference to generally described Formulae I and VII, FSH agonists also include 2,3-diamino aryl or heteroaryl groups substituted with one or more substituents that are optionally fused to a cycloalkyl, heterocyclic, or aryl ring substituted with one or more substituents, H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 11 ID1 R 13 R" E E

TY

I I

R

2 R 1 R5 R 2

R

1 XI-A XI-B wherein E Y C or N;

R

1 R 2 R 4 R 5

R

6

R

11 R 1 2 R 13 B, Y and Z are as defined for Formulae I and IX; and n 0 or 1.

Additional FSH agonists are cyclic alpha-amino carboxamides that contain a heterocyclic or heteroaromatic ring,

R

5 0o

XII

wherein R 1 R 2

R'

5 n, A, and B are as defined for Formula V1.

Other FSH agonists based on Formula IX are cyclic alpha-amino carboxamides that contain a heterocyclic or heteroaromatic ring, N R13 0

R

5 0 wherein R 2 R R 9

R'

1

R

12

R

13 n, L, and M are as defined for Formula IX, and H:\ShonaI\Keep\sPeci\P53478 DIVISIONAL SPECI 25/06/04 12 additionally, R 11 and R 1 2 together may form a fused substituted or unsubstituted aromatic ring.

Additional FSH agonists based on Formula IX are cyclic compounds wherein W is amido rather than carbonyl (Formula XIII-A): R12 I R13 R" M LR13 |n N R N R2

R

5 0

XIII-A

FSH agonists based on Formula XIII-A are compounds of Formula XIII-B,

R

12 R /R13 R" M L O 0 N N

R

5 R14/N R16

XIII-B

wherein R 14 and R 15 are defined the same way as R 9 in Formula IV-A and R 1 6 is defined the same way as R 2 in Formula I.

FSH agonists related to compounds of Formula XIII-B are compounds of Formula XIII-C, N X9N R17 N R14 R16

XIII-C

H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 13 wherein R 14 and R 16 are as defined for Formula XIII-B and R 1 7 is defined the same way as R 2 in Formula I.

The present invention further provides FSH agonists based on Formula X are acyclic alpha-amino carboxamides or spiro-ring substituted alpha-aminocarboxamides, wherein either R 3 or R 9 is not hydrogen, R12

R

3

CH

3 R2 R M 13 N R or R2 S 0 R4 R/ 4VR1 I ]F "R RsZ

O

XIV-A

XIV-B

wherein

R

2

R

3

R

4

R

5 and Z are as defined for formula IV-A; M is CH, N, O, or S, provided when M is O or S there is no R12

R"

1

R

1 2 and R 13 are each independently hydrogen, halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, C,-C 5 alkyl or alkenyl or arylalkyl imino, azido, mercapto, carboxamido, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C 1

-C

8 alkyl, C,-Cs alkenyl, C,-C8 alkoxy, C1-C alkoxycarbonyl, C2-Ca acyl, 1-C8 alkylthio, arylalkylthio, arylthio, C1-C8 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C-C alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C1-C6 N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, alkyl or alkenyl or arylalkyl ester, Cl-C7 cycloalkyl, aroyl, aryloxy, benzyloxy, benzyloxy substituted with one or more substituents, aryl, aryl substituted with one or more substituents, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring, or -NR 6

R

7 or -(CH 2

)NR

6

R

7 where s is 1-6 and

R

6 and R 7 are as defined in section of the definition of substituent; or

R

11

R

12 and R 1 3 each either independently or in combination are a spiro, fused, or bridged ring.

FSH agonists based on Formula XI are 2-amino-3-carboxamido pyridines or the bicyclic analogs thereof, H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 14 N I or> N q N R 2

RR

1 R 2

R

1 XV-A XV-B wherein R 1 R 2 R 4

R

5 R 6

R

11 R 12 R 13 and B are as defined for Formulae XI-A and

XI-B.

Specific examples of compounds of Formula IX include the following: 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyll-3-hyd roxypyrrolidine-2-carboxylic acid-3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-3-acetoxypyrrolidine-2-carboxyl ic acid-3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-isopropyl-2H-pyra n)-3-ca rbonyl]-p ipe rid i ne-2-ca rboxyl ic acid-3-(9ethylcarbazolyl)amide; 1 -[(2-Oxo-6-n-propyl-2H-pyran)-3-carbonyl]-piperidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-piperid ine-2-carboxylic acid-2-(3indolyl)ethylamide; 3-[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-2,2-dimethylthiazolidine-4-carboxylic acid-3-(9-ethyl ca rbazoyl)a mid e; 3-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-5,5-dimethylthiazolid ine-4-carboxylic acid-3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-4-methylpiperizi ne-2-carboxylic acid- 3-(9-ethylcarbazolyl)amide; 2-[1 -Ca rboxamido-2-(3H-imidazoi-4-yl)ethyicarba moyl]-N-(2-ethyl-nhexylamino) tetrahydroisoq uinoline; 1 -[(2-Oxo-6-pentyi-2H-pyran)-3-carbonyl]-2-methyl pyrrolidine-2-carboxyl ic acid- 3-(9-ethylcarbazolyl) amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-4-hydroxypyrrolid ine-2-carboxy ic acid-3-(9-ethylcarbazolyl) amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-4-acetoxypyrrolid ine-2-ca rboxyl ic acid-3-(9-ethylcarbazolyl) amide; 3-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]thiazolidine-4-carboxylic acid-3-(9- H:\Shona1\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 15 ethyl ca rbazolyl) amide; 3-[(2-Oxo-6-pentyi-2H-pyran)-3-carbonyl]- 1,1 -d joxo-thiazolid ine-4-carboxyi ic acid-3-(9-ethylcarbazolyl) amide; 3-[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]thiazolid ine-2-carboxyi c acid-3-(9ethylcarbazolyl) amide; 1 -(Benzofuran-2-yI)carbonyl- pyrrolidine-2-carboxylic acid-3-(9-ethyl carbazolyl)amide; 1 -[(2-Oxo-6-methyl-2H-pyran )-3-carbonyl]-trans-3-azabicyclo(3. 1.0)hexane-2carboxylic acid-3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyra n)-3-carbonyl]4-oxopyrrolidine-2-carboxylic acid-3- (9-ethylcarbazolyl)amide; 2-[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]7-hyd roxytetrahydroisoq uinol ine-3carboxylic acid-3-(9-ethylcarbazolyl)amide; 2-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]tetrahydroisoquinoline-3carboxylicacid-3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]azetid ine-2-carboxyl ic acid-3-(9ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl] 3,4-dehyd ropyrrolidine-2-carboxyicacid (9-ethylca rbazolyl)a mide; 1 -(2-Oxo-2H-chromene-3-carbonyl)-pyrrolidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; 1 ,3-Dioxo-2-isoindolineacetyl)- piperidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; 1 Fl uoro-4-trifl uoromethyl be nzoyl)-p ipe rid ine-2-ca rboxyl ic acid-3-(9ethylcarbazolyl)amide; 1 -(4-n-Pentylbenzoyl)-pyrrolidine-2-carboxylic acid-3-(9-ethylcarbazolyl)amide; 1 -(4-n-butoxybenzoyl)-pyrrolidine-2-carboxylic acid-3-(9-ethylcarbazolyl)amide; 1 Pentyl benzoyl methyl)-pi pe rid ine-2-carboxyl ic acid-3-(9ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-2-oxo-imidazolidine-5-carboxylic acid- 3-(9-ethylcarbazolyl)amide; 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl]-2-[(9-ethylcarbazolyl)ami nomethyl] pyrrolidine; 1 -[(2-Oxo-6-phenyl-2H-pyran)-3-carbonyl]-pyrrolidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; I -[(2-Oxo-6-methyl-2H-pyran)-3-carbonyl]-pyrrolidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 16 1 -[(2-Oxo-6-p he nyl-2H-pyra n)-3-ca rbonyl]-pi pe rid ine-2-carboxyl ic acid-3-(9ethylcarbazolyl)amide; and 1 -[2-Oxo-6-methyl-2H-pyra n)-3-ca rbonyl]-pi pe rid ine-2-carboxyl ic acid-3-(9ethylcarbazolyl)amide; or a pharmaceutically acceptable addition salt thereof.

Specific examples of compounds of Formula X11 include the following: 2-fl -Carboxamido-2-(3H-imidazol-4-yl)ethylcarbamoyl]-2-(2-ethyl-nhexylamino)tetraline; 2-(2-Ethyl-n-hexyl)-N-[(1 -carboxamido-2-terazolyl)ethyl]-3isoquinolinecarboxamide; 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]pyrrolidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; and 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]piperidine-2-carboxylic acid-3-(9ethyl ca rbazolyl)a mid e; or a pharmaceutically acceptable addition salt thereof.

Specific examples of compounds represented by Formula XIII include the following: 1 -[(2-Oxo-6-pentyl-2H-pyran )-3-carbonyl] pyrrolid ine-2-carboxyl ic acid-3-(9ethyl ca rbazolyl) amide (Formula XVI), N% 0

H-

H

3 G 0 0 KCH 3

XIV'

which can exist in two enantiomeric forms (the asterisk denotes the chiral center); 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]piperidine-2-carboxylic acid-3-(9-ethyl carbazolyl)amide (Formula XVII), 0 N-a 00

N

3 5 H 3CCc) 0K H 3 Xv"l H:\Shona 1\Keep\Speci \P5 34 78 DIVISIONAL SPECI 25/06/04 17 which can exist in two enantiomeric forms (the asterisk denotes the chiral center); 2-(2-Ethyl-n-hexyl)-N-[(1 -carboxamido-2-terazolyl)ethyll-3isoquinolinecarboxamide (Formula XVIII), N NN 0H,N WVin 1 -[(2-Oxo-6-pentyl-2H-pyra n)-3-carbonyl]-4-hyd roxypyrrol id ine-2-carboxyl ic acid-3-(9-ethylcarbazolyl) amide (Formula XIX),

H

N

N~ N 0 0 N H 1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-2-methylpyrrolidine-2-carboxylicacid- 3-(9-ethylcarbazolyl) amide (Formula XX),

H

HG 00 0CHH 30 0

H

XX

1 -[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-2-[3-(9-ethylcarbazolyl )ami nomethyl] pyrrolidine Formula XXI), H:\Shona1\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 18

N

0 0

H

3 C 0 00

~CH

3

XX'

2-[1 -Carboxamido-2-(3H-imidazol-4-yl)ethylcarbamoyl]-N-(2-ethyl-nhexylamino) tetrahydroisoquinoline (Formula XXII),

XXII

or a pharmaceutically acceptable addition salt thereof.

The present invention provides specific examples of compounds represented by Formula XIV include the following: 1 -[3-(9-Ethylcarbazolyl)carbamoyl]ethylamino-N-methyl-(2-oxo-6-pentyl-2Hpyran-3-carboxamide) (Formula XXII11) and 1 -Methyl-i ethyl ca rbazolyl )ca rba moyl] -ethyla m ino-N-methyl-(2-oxo-6-pe ntyl-2H-pyra n-3carboxamide) (Formula XXIV), H R12

H

3

C-NXO

N

300 3 C 0 0 C3 XXIII (R 1 2 XXIV (912 =CHO) I -[3-(9-Ethylca rbazolyl)carbamoyl]ethylamino-N-methyl-(2-oxo-6-pentyl-2Hpyran-3-carboxamide); 1 -Methyl-I -[3-(9-ethylcarbazolyl)carbamoyl]-ethylamino-N-methyl-(2-oxo-6pen tyl-2H-pyran-3-ca rboxam id e); H:\Shona1\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 19 1 Ethyl ca rbazolyl)ca rbamoyl] isoa myla m ino-N-methyl-(2-oxo-6- pentyl-2Hpyran-3-carboxamide); 1 -[3-(9-Ethylcarbazolyl)carbamoyllisobutylamino-N-methyl-(2-oxo-6-pentyl-2Hpyran-3-carboxamide); 1 -[3-(9-Ethylcarbazolyl)carbamoyl]phenylethylamino-N-methyl-(2-oxo-6-pentyl- 2H-pyran-3-carboxamide); 1 Ethyl ca rbazol yl )ca rba moyl] 2-hyd roxyethylam mino-N-methyl-(2-oxo-6pentyl-2H-pyran-3-carboxamide); 1 Ethyl ca rbazolyl)ca rba moyll methyla m ino-N-methyl-(2-oxo-6-pentyl-2Hpyran-3-carboxamide); 1 -[3-(9-Ethylcarbazolyl )carbamoyl] methylami no-N-ethyl-(2-oxo-6-pentyl-2Hpyran-3-carboxamide); and 1-Methyl-I -[3-(9-ethylcarbazolyl )carbamoyl]-ethylamino-(2-oxo-6-pentyl-2Hpyran-3-carboxamide); or a pharmaceutically acceptable addition salt thereof.

Specific examples of compounds represented by Formula XV include the following: 3-(9-ethylcarbazolyl)amino-pyridin-2-yl-3-(2-oxo-6-pentyl-2H-pyran-3carboxamide) (Formula XXVI) and 3-(9-ethylcarbazolyl)amino-pyridin-2-yl-3-(N-methyl- 2-oxo-6-pentyl-2H-pyran-3-carboxamide) (Formula X)(VI I),

N

H

3 C 0 0 N

H

XXVI (R 1 2 XXVII (R' 2

CHO)

3 0 or a pharmaceutically acceptable addition salt thereof.

It will be appreciated by those skilled in the art that compounds of the invention may contain a chiral center, and thus will exist in two enantiomeric forms. The present invention includes the use of the individual enantiomers and mixtures of the enantiomers. The enantiomers may be resolved by methods known to those skilled in the art, for example by formation of diastereomeric complexes or derivatives which may be separated, for example, by crystallization or chromatographic separation.

Alternatively, specific enantiomers; may be synthesized by asymmetric synthesis using H; Shona 1\Keep\Speci \P5347 8 DIVISIONAL SPECI 25/06/04 20 optically active reagents, substrates, catalysts or solvents, or by converting one enantiomer to the other by asymmetric transformation.

The non-peptidic amino derivatives of the present invention represent small molecule substitutes for FSH for the treatment of infertility. The invention therefore comprises a pharmaceutical composition comprising a compound of the present invention and a pharmaceutically acceptable carrier, diluent, or excipient thereof.

The invention further comprises a pharmaceutical composition comprising a compound of the present invention and a pharmaceutically acceptable carrier, diluent, or excipient thereof in combination with FSH.

The invention further comprises a pharmaceutical composition comprising a compound of the present invention and a pharmaceutically acceptable carrier, diluent, or excipient thereof in combination with the anti-estrogen compound Clomiphene citrate (Cassidenti et al. (1992) Hum. Reprod., 7: 344-348).

The invention further comprises a pharmaceutical composition comprising a compound of the present invention and a pharmaceutically acceptable carrier, diluent, or excipient thereof in combination with human chorionic gonadotropin (hCG) or human pituitary leutenizing hormone (LH) (Breckwoldt et al. (1971) Fert. Steril., 22: 451-455; Diedrich et al. (1988) Hum. Reprod., 3: 39-44).

The invention further comprises use of a compound of the present invention for the preparation of a medicament.

The invention further comprises a method for treating infertility comprising administering an effective FSH agonistic amount of any of said compounds or pharmaceutical compositions.

The invention further comprises use of a compound of pharmaceutical composition in the manufacture of a medicament to treat infertility.

The invention further comprises use of a compound or pharmaceutical composition to treat infertility.

As FSH agonists, the compounds of the invention are also useful research tools to study the role of FSH and the FSH receptor in biological processes in vitro.

Chemical Syntheses Processes for the preparation of the compounds of Formula I are described hereinafter. Such processes comprise reacting a compound of Formula XXVIII, H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 21 R2

N

H R 1

XXVIII

with a compound of Formula XXIX,

R

3

R

4

X

Y E

R

XXIX

wherein R 1

R

2

R

3

R

4

R

5 X, Y, and Z are defined as for Formula I and E represents a functional group such as SO 2 CI, CHO, COOH, COCI, NCO, CN, N C-CI, CH 2 CI, or

CH

2 0-tosylate.

The compounds of the invention may be prepared by the methods described below and in Examples 1-5. The synthetic schemes displayed in Figures 1-5 illustrate how compounds according to the invention can be made. Those skilled in the art will be able to routinely modify and/or adapt the methods and schemes presented herein to synthesize any compound of the invention.

Pharmaceutical Preparations Pharmaceutical compositions comprising a compound of Formulas I to XXIX and a pharmaceutically acceptable carrier, diluent or excipient therefore are generally described. Thus, the present invention also provides compounds for use as a medicament. In particular, the invention provides the compounds of the present invention for use as FSH agonists, for the treatment of infertility, either alone or in combination with other medicaments. In in vitro assays these compounds were found to mimic the actions of FSH since they exhibit positive log dose response in the screening assay (CHO luciferase FSHR) and are negative in the control assay (CHO luciferase). Accordingly, the compounds of the invention are useful research tools for studying the role of FSH in biological processes.

The representative compounds also show activity in the primary rat granulosa cell H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 22 bioassay, which is used to detect the conversion of testosterone to estradiol in the presence of FSH or an FSH agonist. The CHO luciferase assay and the rat granulosa cell bioassay are described in detail hereinafter.

The compounds of the invention, together with a conventional adjuvant, carrier, diluent or excipient may be placed into the form of pharmaceutical compositions and unit dosages thereof, and in such form may be employed as solids, such as tablets or filled capsules, or liquids such as solutions, suspensions, emulsions, elixirs, or capsules filled with the same, all for oral use, or in the form of sterile injectable solutions for parenteral (including subcutaneous use). Such pharmaceutical compositions and unit dosage forms thereof may comprise ingredients in conventional proportions, with or without additional active compounds or principles, and such unit dosage forms may contain any suitable effective amount of the active ingredient commensurate with the intended daily dosage range to be employed. Tablets containing 10 milligrams of active ingredient or, more broadly, 0.1 to 100 milligrams, per tablet, are accordingly suitable representative unit dosage forms.

Definitions The following paragraphs provide definitions of various chemical moieties described throughout the specification and are intended to apply uniformly throughout the specification and claims unless expressly stated otherwise.

The term "substituent" refers to halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, C1-C 5 alkyl or alkenyl or arylalkyl imino, carbamoyl, azido, carboxamido, mercapto, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C1-C8 alkyl, C1-C8 alkenyl, C1-C8 alkoxy, Cl- Ce alkoxycarbonyl, aryloxycarbonyl, C2-C8 acyl, C1-C8 alkylthio, arylalkylthio, arylthio, C1-C8 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C1-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C1-C6 N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, C3-C7 cycloalkyl, aroyl, aryloxy, arylalkyl ether, aryl, aryl fused to a cycloalkyl or heterocycle or another aryl ring, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic, or aromatic ring; or

NR

6

R

7 where R 6 and R 7 are each independently hydrogen, cyano, oxo, carboxamido, amidino, Cl-C8 hydroxyalkyl, C-C3 alkylaryl, aryl-C 1

-C

3 alkyl, CI-Cs alkyl, C-C8 alkenyl, C1-C8 alkoxy, Cl-C8 alkoxycarbonyl, aryloxycarbonyl, aryl-Ci-C 3 alkoxycarbonyl, C2-C8 acyl, Ci-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, aroyl, aryl, aryl fused to a cycloalkyl or heterocyclic or another aryl ring, C3-C7 cycloalkyl, C3- C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl or heterocyclic or aromatic ring; H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 23 or where R 6 and R 7 are taken together to form -(CH2)mB(CH2)n where B is

-C(H)(R

8

-N(R

8 or where m and n are independently 1 to 3, r is 0 to 2, and R 8 is defined the same way as R 6 or

-(CH

2 )sNR 6

R

7 where s is 1-6 and R 6 and R 7 are defined as in section (b) of the definition of substituent, above.

The term "substituted" refers to the moiety substituted with one or more substituents.

The term "alkyl" refers to a univalent C1 to C 8 saturated straight, branched, or cyclic alkane moiety and specifically includes methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, cyclopentyl, isopentyl, neopentyl, hexyl, isohexyl, cyclohexyl, 3methylpentyl, 2,2-dimethylbutyl, and 2,3-dimethylbutyl. The alkyl group can be optionally substituted with any appropriate group, including but not limited to one or more moieties selected from the group consisting of halo, hydroxyl, amino, alkylamino, arylamino, alkoxy, aryloxy, nitro, cyano, sulfonic acid, sulfate, phosphonic acid, phosphate, or phosphonate, either unprotected, or protected as necessary, as known to those skilled in the art or as taught, for example, in Greene, et al., "Protective Groups in Organic Synthesis," John Wiley and Sons, Second Edition, 1991.

The term "cycloalkyl" refers to a monocyclic C3-C7 ring.

The terms "arylalkyl" and "alkylaryl" refer to groups in which the alkyl consists of between 1 and 3 carbons.

The term "alkoxy" refers to an alkyl moiety having a terminal with free a valence, CH 3

CH

2 The term "alkenyl" refers to a univalent C 2

-C

6 straight, branched, or in the case of C-6, cyclic hydrocarbon with at least one double bond, optionally substituted as described above.

The term "alkynyl" refers to a univalent C2 to C6 straight or branched hydrocarbon with at least one triple bond (optionally substituted as described above) and specifically includes acetylenyl, propynyl, and -C-C-CH 2 (alkyl), including -C-C-

CH

2

(CH

3 The term "aryl" refers to a mono- or bi- or tri-cyclic aromatic ring system that may optionally be substituted with one or more substituents.

The term "heteroatom" means N, O, or S.

The term "heterocycle" refers to a cyclic alkyl, alkenyl, or alkynyl moiety wherein one or more ring carbon atoms is replaced with a heteroatom; a Cm-Cn heterocycle is a ring that contains m to n members wherein one or more of the members is a heteroatom.

The term "heteroaryl" refers to a aryl moiety wherein one or more ring carbon H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 24 atoms is replaced with a heteroatom.

The term "halo" refers to chloro, fluoro, iodo, or bromo.

When a substituent defined as a monovalent radical becomes incorporated into a ring R 2 and R 3 on Formula III), it is understood that the substituents become the corresponding divalent radicals.

The term "pharmaceutically acceptable salts or complexes" refers to salts or complexes that retain the desired biological activity of the above-identified compounds and exhibit minimal or no undesired toxicological effects. Examples of such salts include, but are not limited to acid addition salts formed with inorganic acids (for example, hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid, and the like), and salts formed with organic acids such as acetic acid, oxalic acid, tartaric acid, succinic acid, malic acid, ascorbic acid, benzoic acid, tannic acid, pamoic acid, alginic acid, polyglutamic acid, methanesulfonic acid, naphthalenesulfonic acid, naphthalenedisulfonic acid, and polygalacturonic acid. The compounds can also be administered as pharmaceutically acceptable quaternary salts known by those skilled in the art, which specifically include the quaternary ammonium salt of the formula -NR wherein R is hydrogen, alkyl, or benzyl, and Z is a counterion, including chloride, bromide, iodide, -O-alkyl, toluenesulfonate, methylsulfonate, sulfonate, phosphate, or carboxylate (such as benzoate, succinate, acetate, glycolate, maleate, malate, citrate, tartrate, ascorbate, benzoate, cinnamoate, mandeloate, benzyloate, and diphenylacetate).

The term "pharmaceutically active derivative" refers to any compound that upon administration to the recipient, is capable of providing directly or indirectly, the compounds disclosed herein.

Examples The following Examples further illustrate specific aspects of the compounds disclosed in this application. It is to be understood, however, that these examples are included for illustrative purposes only and are not intended to limit the scope of the invention in any respect and should not be so construed.

Example 1: Synthesis of 1-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-pyrrolidine-2carboxylic acid-3-(9-ethyl carbazolyl)amide (Formula XVI) (Figure 1; Scheme 1) Step A. Synthesis of 1-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-pyrrolidine-2carboxylic acid-t-butylester: To a solution of Boc-L-Proline (5 mmol, Advanced ChemTech, Louisville, USA) in dichloromethane (20 mL) cooled to 0 oC were added dropwise a solution of di- H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 25 isopropyl carbodiimide (DIC, 2.5 mmol). After the solution had been stirred at 0 °C for min, the solid by-product (DIC urea) was filtered out. To the filtrate were added 3amino-9-ethylcarbazole (5 mmol, Aldrich Chemical Company, Milwaukee, USA) in DMF and triethyl amine (5 mmol) and the solution was stirred at room temperature for 16 h. The reaction was monitored by TLC for completion. The solution was evaporated to dryness under vacuum. The residue was dissolved in ethyl acetate (250 mL) and washed successively with 10% aqueous sodium carbonate, 10% aqueous citric acid, water, and saturated brine. The organic layer was dried on anhydrous sodium sulfate, filtered and ethyl acetate was evaporated to give an oily product 1-(t- Butoxycarbonyl)-N-[3-(9-ethylcarbazolyl)]-2-pyrrolidinecarboxamide (75% yield); HPLC purity: 90%; Mass: desired M+H found (Perceptive Biosystem's Voyager-Maldi TOF).

This compound was used in the next step without further purification.

Step B. Formation of 1-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-pyrrolidine-2carboxylic acid-3-(9-ethyl carbazolyl)amide (Formula XVI): The N-Boc-pyrrolidine carboxamide obtained from step A was dissolved in trifluoroacetic acid/dichloromethane (25 mL) and stirred for 30 min at room temperature. The TFA solution was evaporated under vacuum. The dry residue was dissolved in DMF and two equivalents of triethyl amine was added, followed by one equivalent of a symmetrical anhydride (generated in situ from 2-oxo-6-pentyl-2H-pyran- 3-carboxylic acid and diisopropylcarbodi-imide) and the solution was stirred for 14 h.

DMF was evaporated under high vacuum. The residue was dissolved in ethyl acetate.

This organic layer was washed with 10% aqueous sodium carbonate, 10% aqueous citric acid, water and saturated brine. The organic layer was dried on anhydrous magnesium sulphate. The organic layer was decolorized with charcoal evaporated under vacuum to result in light brown gummy material. This crude material was purified on preparative reverse phase HPLC using 1% TFA-acetonitrile and water as the mobile phase. HPLC purity 95%. Mass: calculated for C 3 0

H

33

N

3 0 4 499.6; found: 500.6 (Perceptive Biosystem's Voyager-Maldi TOF).

Synthesis of 1-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-piperidine-2-carboxylic acid-3-(9-ethyl carbazolyl)amide (Formula XVII) was achieved using the same procedure as above by using N-boc-pipecolinic acid made from dl-pipecolinic acid (Aldrich Chemical Company, Milwaukee, USA) in place of Boc-L-proline.

Example 2: Synthesis of 2-(2-Ethyl-n-hexyl)-N-[(1-carboxamido-2-terazolyl)ethyl]-3isoquinolinecarboxamide (Formula XVIII) (Figure 2; Scheme 2) Step A. Synthesis of amide of Rink amide resin and N-Fmoc-D-histidine: Fmoc-amino Rink Amide resin (1.0 g, 0.45 mmol/g substitution), available from H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 26 NovaBiochem (San Diego, USA), was swollen with dichloromethane for 10 min. The resin was further washed with dimethyl formamide three times. The Fmoc- group was removed with 20% piperidine in DMF for 30 min. Further repeated washings were done with DMF (3 x 2 min), dichloromethane (DCM, 3 x 2 min), DMF (1 x 1 min). Then N-Fmoc-D-histidine (available from Advanced ChemTech, Louisville, USA) in DMF mL, 2.0 mmol (4 equivalents with respect to the resin loading)], 2 mmol of 0-(7azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) and 4 mmol of diisopropylethylamine (DIEA, 640 pL) were added to the resin to make a slurry. This slurry was stirred at room temperature for 2 h. The small resin sample was subjected to Sarin-Kaiser test for the completion of reaction. The resin was then filtered and washed with DMF (3 x 2 min), MeOH(2 x 2 min), dichloromethane (2 x 2 min) and DMF (2 x 2 min).

Step B. Synthesis of N-[(1-Carboxamido-2-tetrazoyl)ethyl]-3-isoquinolinecarboxamide bound to Rink amide resin: The compound obtained from step A was deprotected by removal of the Fmocgroup with 20% piperidine in DMF for 30 min. Further resin washings were done with DMF (3 x 2 min), dichloromethane (DCM, 3 x 2min), DMF (1 x 1 min). Then 1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid (available from Advanced ChemTech, Louisville, USA) in DMF [10 mL, 2.0 mmol (4 equivalents with respect to the resin loading)], 2 mmol of HATU and 4 mmol of diisopropylethylamine (DIEA, 640 p.L) were added to the resin to make a slurry. This slurry was stirred at room temperature for 2 h. The small resin sample was subjected to Sarin-Kaiser test for the completion of reaction. The resin was then filtered and washed with DMF (3 x 2 min), MeOH (2 x 2 min), dichloromethane (2 x 2 min) and DMF (2 x 2 min).

Step C. Synthesis of 2-(2-Ethyl-n-hexyl)-N-[(1-carboxamido-2-terazolyl)ethyl]- 3-isoquinolinecarboxamide bound to resin: The Fmoc- group on the tetrahydroisoquinoline nitrogen was removed by treatment with 20% piperidine in DMF for 30 min. The resin was then washed with DMF (3 x 2 min), dichloromethane (3 x 2 min), and DMF (1 x 1 min). Then a 0.2 M stock solution of 2-ethylhexanal (Aldrich Chemical Company, Milwaukee, USA) in 2% Acetic acid in trimethyl ortho formate (TMOF) (10 mL/g of resin) was added and reaction was carried out for 2 h to form an imine derivative in situ. Then a 0.2 M stock solution of sodium cyanoborohydride (NaCNBH 3 in TMOF was added to the above reaction mixture to get the final concentration to 0.1 M and the reaction was continued at room temperature for 14 h. The resin was washed with TMOF (3 x 2 min), DMF (3 x 2 min), MeOH (3 x 2 min), dichloromethane (2 x 2 min) and dried under vacuum for 4 h.

H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 27 Step D. Formation of 2-(2-Ethyl-n-hexyl)-N-[(1-carboxamido-2-terazolyl)ethyl]- 3-isoquinoline carboxamide (Formula XVIII): Pre-cooled cleavage reagent (trifluoroacetic acid dimethylsulfide triisopropylsilane :H 2 0; 90:2.5:2.5:5; v/v) was added (10 mL/g) to the dried resin and allowed to stir for 2 h at room temperature. The TFA cocktail was filtered into a 20 mL vial and TFA was evaporated on a rotavapor under vacuum. Diethyl ether was added to precipitate the compound along with trityl alcohol. The mixture was dissolved in acetonitrile before purification on reverse phase HPLC.

Step E. Purification of compound XVIII: The crude compound from step D was dissolved in 10% aqueous acetonitrile and loaded onto the C18 column on Delta preparative HPLC. A linear gradient with 1% TFA acetonitrile and water was used as mobile phase. HPLC purity 95%; Mass (Perceptive Biosystem's Voyager-Maldi TOF): calculated for C 24

H

35

N

5 0 2 425.6; found: 426.6 Example 3: Synthesis of 1-[(2-Oxo-6-pentyl-2H-pyran)-3-carbonyl]-4hydroxypyrrolidine-2-carboxylic acid-[3-(9-ethyl carbazolyl)] amide (Formula XIX) (Figure 3; Scheme 3) Step A. Synthesis of 1-t-butoxycarbonyl-4-hydroxypyrrolidine-2-carboxylic acid- [3-(9-ethyl carbazolyl)] amide: To a solution of N-Boc-trans-hydroxy-L-proline (5 mmol, Sigma Chemical Company, St. Louis, USA) in dichloromethane (20 mL) at ambient temperature were added at 5 min intervals 2-(1 H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HBTU, 5 mmol), diisopropyl ethyl amine (DIEA, 10 mmol) followed by 3-amino-9-ethylcarbazole (5 mmol, Aldrich Chemical Company, Milwaukee, USA). After stirring for 1 h, the solution was evaporated to dryness under vacuum. The residue was dissolved in ethyl acetate (250 mL) and washed successively with 10% aqueous sodium carbonate, 10% aqueous citric acid, water, and saturated brine. The organic layer was dried on anhydrous sodium sulfate, filtered and ethyl acetate was evaporated to give an oily product 1-(t-butoxycarbonyl)- 4hydroxypyrrolidine-2-[3-(9-ethyl carbazolyl)] carboxamide (85% yield); HPLC purity: This compound was used in the next step without further purification.

Step B. Formation of 1-[3-(2-Oxo-6-pentylpyran)carbonyl]-4hydroxypyrrolidine-2-carboxylic acid-3-(9-ethyl carbazolyl)amide: The 1-(t-butoxycarbonyl)- 4-hydroxypyrrolidine-2-[3-(9-ethyl carbazolyl)] carboxamide obtained from step A was dissolved in 50 trifluoro acetic acid/dichloromethane (25 mL) and stirred for 30 min at room temperature. The TFA H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 28 solution was evaporated under vacuum. The dry residue was dissolved in dichloromethane and added to the activated ester of 2-oxo-6-pentyl-2H-pyran-3carboxylic acid (generated in situ from 5 mmol 2-oxo-6-pentyl-2H-pyran-3-carboxylic acid, 5 mmol HBTU and 10 mmol diisopropylethylamine) and the solution was stirred for 1 h. The solvent was evaporated under vacuum and the residue was dissolved in ethyl acetate. This organic layer was washed with 10% aqueous sodium carbonate, aqueous citric acid, water and saturated brine. The organic layer was dried on anhydrous magnesium sulphate and then evaporated in vacuo to result in light brown gummy material. This crude material was purified on preparative reverse phase HPLC using 1% TFA-acetonitrile and water as the mobile phase. HPLC purity 95%. Mass: calculated for C 30

H

33

N

3 0: 415.6; found: 516 (Perceptive Biosystem's Voyager- Maldi TOF).

Example 4: Synthesis of 2-[(1-Carboxamido-2-terazolyl)ethylcarbamoyl]-(D,L)-2-(2ethyl-n-hexylamino)tetraline (Formula XXV) (Figure 4; Scheme 4) Step A. Synthesis of amide of Rink amide resin and N-Fmoc-D-histidine: Fmoc-amino Rink Amide resin (1.0 g, 0.45 mmol/g substitution), available from NovaBiochem (San Diego, USA), was swollen with dichloromethane for 10 min. The resin was further washed with dimethyl formamide three times. The Fmoc group was removed with 20% piperidine in DMF for 30 min. Further repeated washings were done with DMF (3 x 2 min), dichloromethane (DCM, 3 x 2 min), DMF (1 x 1 min). Then N-Fmoc-D-histidine (available from Advanced ChemTech, Louisville, USA) in DMF mL, 2.0 mmol (4 equivalents with respect to the resin loading)], 2 mmol of 0-(7azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) and 4 mmol of diisopropylethylamine (DIEA, 640 giL) were added to the resin to make a slurry. This slurry was stirred at room temperature for 2 h. The small resin sample was subjected to Sarin-Kaiser test for the completion of reaction. The resin was then filtered and washed with DMF (3 x 2 min), MeOH (2 x 2 min), dichloromethane (2 x 2 min) and DMF (2 x 2 min).

Step B. Synthesis of 2-[(1-Carboxamido-2-tetrazoyl)ethylcarbamoyl]-(D,L)-2aminotetraline bound to Rink amide resin: The compound obtained from step A was deprotected by removal of the Fmoc group with 20% piperidine in DMF for 30 min. Further resin washings were done with DMF (3 x 2 min), dichloromethane (DCM, 3 x 2 min), DMF (1 x 1 min). Then Fmoc- (D,L)-2-Aminotetraline-2-carboxylic acid (available from Acros) in DMF [10 mL, mmol (4 equivalents with respect to the resin loading)], 2 mmol of HATU and 4 mmol of diisopropylethylamine (DIEA, 640 piL) were added to the resin to make a slurry. This H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 29 slurry was stirred at room temperature for 2 h. The small resin sample was subjected to Sarin-Kaiser test for the completion of reaction. The resin was then filtered and washed with DMF (3 x 2 min), MeOH (2 x 2 min), dichloromethane (2 x 2 min) and DMF (2 x 2 min).

Step C. Synthesis of 2-[(1-Carboxamido-2-terazolyl)ethylcarbamoyl]-(D,L)-2-(2ethyl-n-hexylamino)tetraline bound to resin: The Fmoc group on the aminotetraline nitrogen was removed by treatment with piperidine in DMF for 30 min. The resin was then washed with DMF (3 x 2 min), dichloromethane (3 x 2 min), and DMF (1 x 1 min). Then a 0.2 M stock solution of 2ethylhexanal (Aldrich Chemical Company, Milwaukee, USA) in 2% Acetic acid in trimethyl ortho formate (TMOF) (10 mL/g of resin) was added and the reaction was carried out for 2 h to form an imine derivative in situ. Then a 0.2 M stock solution of sodium cyanoborohydride (NaCNBH 3 in TMOF was added to the above reaction mixture to get the final concentration to 0.1 M and the reaction was continued at room temperature for 14 h. The resin was washed with TMOF (3 x 2 min), DMF (3 x 2 min), MeOH (3 x 2 min), dichloromethane (2 x 2 min) and dried under vacuum for 4 h.

Step D. Formation of 2-[(1-Carboxamido-2-terazolyl)ethylcarbamoyl]-(D,L)-2-(2ethyl-n-hexylamino)tetraline (Formula XXV): Pre-cooled cleavage reagent (trifluoroacetic acid dimethylsulfide:triisopropylsilane: H 2 0; 90:2.5:2.5:5; v/v) was added (10 mL/g) to the dried resin and allowed to stir for 2 h at room temperature. The TFA cocktail was filtered into a 20 mL vial and TFA was evaporated on a rotavapor under vacuum.

Diethyl ether was added to precipitate the compound along with trityl alcohol. The mixture was dissolved in 20% acetonitrile before purification on reverse phase HPLC.

Step E. Purification of compound XXV: The crude compound from step D was dissolved in 10% aqueous acetonitrile and loaded onto the C18 column on Delta preparative HPLC. A linear gradient with 1% TFA acetonitrile and water was used as mobile phase. HPLC purity 95%; Mass (Perceptive Biosystem's Voyager-Maldi TOF): calculated for C 2 5

H

37

N

5 0 2 439.6; found: 440.6 Example 5: Synthesis of 3-(9-ethylcarbazolyl)amino-pyridin-2-yl-3-(2-oxo-6-pentyl-2Hpyran-3-carboxamide) (Formula XXVI) (Figure 5; Scheme Step A. Synthesis of 2-[3-(9-ethylcarbazolyl)amino]-3-nitropyridine: To a solution of 2-chloro-3-nitropyridine (5 mmol, Aldrich Chemical Company, Milwaukee, USA) in toluene (10 mL) at ambient temperature were added 3-amino-9ethylcarbazole (5 mmol, Aldrich Chemical Company, Milwaukee, USA). The mixture H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 30 was heated to reflux for a period of 16 h. After cooling to room temperature, the mixture was diluted with ethyl acetate and washed successively with saturated sodium bicarbonate and brine. The organic layer was collected, dried over anhydrous sodium sulphate and concentrated in vacuo to give an oily product. This product was purified by chromatography over silica gel (eluent: 1:1 ethyl acetate:hexane) to give ethylcarbazolyl)amino]-3-nitropyridine (68% yield); HPLC purity: This compound was then used in the next step.

Step B. Synthesis of 2-[3-(9-ethylcarbazolyl)amino]-3-aminopyridine: To a methanolic solution of 2-[3-(9-ethylcarbazolyl)]amino-3-nitropyridine obtained from step A were added 10% palladium over carbon (10% and the mixture was subjected to hydrogenation using a Parr hydrogenator at 40 psi for a period of 12 h.

Then the slurry was filtered over Celite to remove the catalyst and the methanolic filtrate was evaporated to dryness to afford an oily product, ethylcarbazolyl)amino]-3-aminopyridine. This was used as such in the next step.

Step C. Formation of 3-(9-ethylcarbazolyl)amino-pyridin-2-yl-3-(2-oxo-6-pentyl- 2H-pyran-3-carboxamide) (Formula XXVI): To a solution of 2-oxo-6-pentyl-2H-pyran-3carboxylic acid (3mM, Aldrich Chemical Company, Milwaukee, USA) in 10 mL dichloromethane at ambient temperature were added 2-1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HBTU; 3 mM; Advanced ChemTech, Louisville, USA) followed by 6 mM of diisopropylethylamine (DIEA; Aldrich Chemical Company, Milwaukee, USA). After 10 minutes, a solution of 3 mM of 2-[3-(9-ethylcarbazolyl)]amino-3aminopyridine (obtained from step B) in 10 mL dichloromethane was added dropwise, and the resulting mixture was stirred at room temperature for 2 h. The crude product mixture was washed with brine, dried over anhydrous sodium sulphate and chromatographed over silica gel (eluent: 1:1 ethyl acetate:hexane to 100% ethyl acetate) to afford 71% of pure compound XXVI. HPLC purity 95%. Mass: calculated for C 30

H

30

N

4 0 3 495; found: 496 (Finnigan LCQ).

Example 6: FSH Assay Method General Overview All compounds were stored in 96-well deepwell plates in DMSO at a nominal concentration of 10 mM (assuming perfect synthesis and yields). Compounds were screened for agonist activity at the FSH receptor using the recombinant FSH receptor stably transfected and expressed in Chinese Hamster Ovary cells (CHO cells) essentially as described in the work by Kelton, et al. (Molecular and Cellular Endocrinology, 1992, 89, 141-151). Since the FSH receptor is known to act via a G- H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 31 protein (Gs) to activate adenylyl cyclase and hence raise intracellular levels of cAMP, the high throughput screening (HTS) assay used a gene reporter system consisting of the cAMP response element coupled upstream to the reporter gene, which in this case encoded the enzyme luciferase. An agonist at the FSH receptor increases cAMP in the cell, which results in activation of CREB (cAMP response element binding protein).

This molecule interacts with the CRE element upstream of the gene and results in increased transcription of the genes downstream of the element. The substrate for luciferase (Packard Instrument Company, Meriden, CT, USA) was added to the cells after appropriate incubation with the compounds of the invention or FSH (used as a positive control). The amount of luciferase expressed was measured by quantitating the luminescence produced by the enzyme using a TopCount scintillation/luminescence counter running in single photon counting mode. A compound that acts as an agonist at the receptor should produce light from the treated cells in proportion to its concentration within the incubation. Luminescence should be saturable at high concentrations of the compound.

HTS Primary Assay in detail.

The compounds of the invention, in deepwell plates (Master plates) were loaded on the robotic deck along with the appropriate number of assay plates and daughter plates. A 10 p.1 aliquot from each master plate was transferred to the corresponding daughter plate and 90 p.I of DME/F12 was added and mixed within each well. 20 g1 was then removed from the daughter plate and dispensed into the assay plate. After addition of an aliquot of FSH (equivalent to an EC 100 response for this hormone [Final concentration of 5e-11 to each of three wells on the plate, 80 1ll of media (DME/F12 2% serum) and 100 jil aliquot of cells (4 x 10 5 /mL in the same media) were added and the plate incubated at 37 °C for 3 h 30 min. At this time the plate was removed from the incubator and media in each well was aspirated and the cells adhering to the bottom of the plate washed with 300 1 PBS containing 1 mM Ca 2 and 1 mM Mg 2 The PBS was aspirated and 100 g1 PBS added to each well. 100 p1 of Luclite (prepared as described by the manufacturer) was added to each well and the plate was shaken gently for 40 s prior to placement in the Topcount plate reader. After allowing 3.5 min for the plate to dark-adapt within the machine, the amount of luminescence generated was quantitated using Single Photon Counting mode. The data was transmitted electronically from the Topcount to the robot processing computer terminal and was renamed with an ID corresponding to the original master plate ID. Data were evaluated using an Excel macro and compounds showing activity comparable to that produced by an EC 100 of FSH itself were further analyzed in the H,\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 32 same assay at differing concentrations. LDR (log-dose-response) curves were generated for these compounds in CHO cells containing the FSH receptor and these curves were also compared with those in either cells expressing a different Gs-linked receptor or in cells lacking any transfected receptor (to confirm receptor specificity).

Compounds that showed receptor specificity and activity at low concentrations were progressed to secondary assays that included dose-response curves in Y1 cells co-expressing the human FSH receptor or in isolated rat granulosa cells.

Figure 6 displays results of the FSH assay for compounds XVI, XVII and XIX.

For comparison, results for FSH are also shown. Dose-response curves for each compound were generated and are displayed. From the graph, FSH has a ECso of 1.47 pM, compound XVI has a EC 50 of 38.8 nM, compound XVII has a ECso of 3.9 nM, and compound XIX has a EC 50 of 1.12 jpM. A best-fit line is drawn for FSH. Results of the assay using media only and forskolin are also shown. The assay was performed using duplicate samples of each compound.

Example 7: Rat Granulosa Cell assay The primary rat granulosa cell bioassay for FSH was performed essentially as described (Dahl et al. (1989) Methods Enzymol., 168: 414-423). Conversion of testosterone to estradiol in the presence of low nanomolar concentrations of FSH was detected using this assay. In this in vitro assay, conversion of androstendione to estrogen by granulosa cells in the presence of FSH was measured for compounds XVI and XVII. For comparison, FSH was also tested in the assay.

Cells were plated at 5000, 8000, 10,000 and 20,000 cells/ well/ 200 pJ of GAB medium on poly-D-lysine-coated 96-well tissue culture plates. Plates were incubated at 37 OC in a 5% C0 2 /95% air incubator for 3 days. Cultures were washed prior to stimulation with FSH or LH. 50 pl of 4X concentrations of rhFSH, rhLH or forskolin was added to the cultures. To define the range of the dose response curve the rhFSH was diluted so that the final concentration on the cells was between 10" 7 to 1015 M with three doses per log at 1, 2 and 5. Forskolin was diluted so that the final concentration on the cells was 1 pM. Cells were incubated 37 OC in 5% CO 2 Three days later, cell supernatants were collected and diluted 1:100 in GAB medium for measurement of estradiol by RIA. The RIA was performed according to manufacturer's directions except that an estradiol standard was prepared in absolute ethanol at 100 ng/mL and then further diluted in GAB medium, instead of kit buffer. The concentration of hormone was plotted on the X-axis against the amount of estradiol produced by the cells on the Y-axis using Origin graphics software.

As displayed in Figure 7, compounds XVI and XVII show increasing estradiol H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 33 production with increasing dose at concentrations between 200 nM and 5 gM. Above this concentration the compound showed a decrease in production-presumably since it caused a desensitization of the FSH receptors to further stimulation. The results show that compounds XVI and XVII stimulated estradiol production with EC 50 of 1.4 gM and 1.2 tM, respectively. Results of the assay using media only are also shown.

Example 8: Table of compounds of formula IV-A or IV-B The following compounds can be synthesized using the corresponding BOCprotected amino acid in the method set out in Figure 1 and Example 1.

o ECso (pM) ECso (gM) Structures Nomenclature CHOFSHR Rat Luciferase Granulosa (Example 6) (Example 7) o o 2-Oxo-6- N Lpentyl-2Ho--o N\ N pyran-3 0.077 0.96 carboxylic acid S/ [1-(9-ethyl-9Hcarbazol-3-yl carbamoyl)ethyl]-methylamide o o 2-Oxo-6- C.o pentyl-2Hpyran-3 3.1 carboxylic acid [1-(9-ethyl-9Hcarbazol-3-yl carbamoyl)ethyl]-methylamide H.\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 34 H \ShonaI\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 35 1 T -r 2-Oxo-6pentyl-2Hpyran-3carboxylic acid [1 -(9-ethyl-9Hcarbazol-3-yl carbamoyl)-2phenyl-ethyl]methyl-amide 2-Oxo-6pentyl-2Hpyran-3- 1.61 carboxylic acid [1 -(9-ethyl-9Hcarbazol-3-y carbamoyl)-3methyl-butyl]methyl-amide 2-Oxo-6pentyl-2Hpyran-3- 0.55 carboxylic acid [1 -(9-ethyl-9Hca rbazol-3-yI carbamoyl)-2methyl-p ropyl]methyl-amide I H:\Shonal\Keep\Speci\PS3478 DIVISIONAL SPECI 25/06/04 36 Structures INomenclature

EC

5 0

(I&M)

I CHOFSHR Luciferase (Example 6) 0 0 N N 0 H3C 2-Oxo-6-pentyl-2Hpyran-3-carboxylic acid 9 benzyisufanyl-1 ethyl-9H-carbazol-3ylcarbamoyi )-ethyl]amide 2-Oxo-6-pentyl-2Hpyran-3-carboxylic acid ethyl-[(9-ethyl- 9H-carbazol-3ylcarbamoyl)methyl]-amide -1 2-Oxo-6-pentyl-2Hpyran-3-carboxylic acid [1 -(9-ethyl-9Hcarbazo-3-yl carbamoyl)-1 methyl-ethyl]-amide 0 -q 2-Oxo-6-pentyl-2H-

H

3 C N N pyran-3-carboxylic HC acid [1-(9-ethyl-9H- 3.6 carbazol-3-y carbamoyl)cyclohexyl]-amide H:\ShonaI\Keep\S,eci\P53478 DIVISIONAL SPEC! 25/06/04 37 In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04

Claims (14)

1. A compound of Formula IVA, R 3 R 9 R4 Y xW I I R 5 Z R N' R2 IV-A and pharmaceutically acceptable addition salts thereof, wherein: R 3 and R 9 are each independently hydrogen, halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, C1-C5 alkyl or alkenyl or arylalkyl imino, azido, mercapto, carboxamido, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C,-C 8 alkyl, C1-C8 alkenyl, Cj-C8 alkoxy, C1-C8 alkoxycarbonyl, C2-C8 acyl, 1-C8 alkylthio, arylalkylthio, arylthio, C1-C alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C 1 -C 8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C1-C6 N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, alkyl or alkenyl or arylalkyl ester, C1-C7 cycloalkyl, aroyl, aryloxy, benzyloxy, benzyloxy substituted with one or more substituents, aryl, aryl substituted with one or more substituents, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; or R 3 and R 9 are each independently -NR 6 R 7 Or -(CH2),NR 6 R 7 where s is 1-6 and R 6 and R are as defined in section of the definition of substituent, below; or R 3 and R 9 together form a substituted or unsubstituted C3-C7 cycloalkyl or C3-C7 heterocycle spiro ring, or such a ring fused to a cycloalkyl, heterocyclic or aromatic ring, to make a compound of Formula IV-B, Y W I N R51Z R1 N R2 IV-B R' is a carbazolyl substituted with one or more substitutents; R 5 is a heterocyclic ring substituted with one or more substitutents; R 4 is hydrogen, C 1 -Co 1 0 alkyl, C 1 -Clo 0 alkyl substituted with one or more substituents, C2- alkenyl, C2-C10 alkenyl substituted with one or more substituents, C2-C10 akynyl, C2- H,\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 39 akynyl substituted with one or more substituents, Cj-C8 alkoxy, C1-Ca alkoxy substituted with one or more substituents, C2-C8 alkoxycarbonyl, C2-C8 alkoxycarbonyl substituted with one or more substituents, C-C8 thioalkyl, C1-C thioalkyl substituted with one or more substituents, C2-Ca acyl, 2-C8 acyl substituted with one or more substituents, C2-C8 acyloxy, C2-C8 acyloxy substituted with one or more substituents, aryloxy, aryl, aryl substituted with one or more substituents, C3-C7 cycloalkyl, C3-C7 cycloalkyl substituted with one or more substituents, C3-C7 heterocycle, or C3-C7 heterocycle substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; R 2 is hydrogen, straight or branched C1-C6 alkyl or C3-C7 cycloalkyl or C3-07 cycloalkyl substituted with one or more substituents, C3-C7 heterocycle, C3-C7 heterocycle substituted with one or more substituents, aryl, aryl substituted with one or more substituents, heteroaryl, heteroaryl substituted with one or more substituents, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring; W is carbonyl amido amidoalkyl (NH(C=0)CH2-), imino (C=NH), thiocarbonyl sulfonyl (SO 2 methylene (CH 2 or methylene substituted with one or more substituents; Y is CH or N; Z is carbonyl amino imino sulfonyl (S02), or (C=O)NH; and the substituents for R 1 R 3 and R 4 are independently halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, Cj- alkyl or alkenyl or arylalkyl imino, carbamoyl, azido, carboxamido, mercapto, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C 1 -Cs alkyl, C,-C8 alkenyl, C-C8 alkoxy, C- C8 alkoxycarbonyl, aryloxycarbonyl, C2-C8 acyl, 1-C8 alkylthio, arylalkylthio, arylthio, CI-C8 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C,-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C-C6 N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, C3-C7 cycloalkyl, aroyl, aryloxy, arylalkyl ether, aryl, aryl fused to a cycloalkyl or heterocycle or another aryl ring, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic, or aromatic ring; or NR 6 R 7 where R 6 and R 7 are each independently hydrogen, cyano, oxo, carboxamido, amidino, C-C8 hydroxyalkyl, C 1 -C 3 alkylaryl, aryl-C1-C 3 alkyl, C 1 -Cs alkyl, C-C8 alkenyl, C-C alkoxy, C1-C alkoxycarbonyl, aryloxycarbonyl, aryl- C1-C3 akoxycarbonyl, C2-C8 acyl, 01-C8 alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, aroyl, aryl, aryl fused to a cycloalkyl or heterocyclic or another aryl ring, C3-C7 cycloalkyl, C3- C7 heterocycle, or any of these rings fused or spiro-fused to a cycloakyl or heterocyclic or aromatic ring; or R6 and R' are taken together to form -(CH 2 )mB(CH 2 )n where B is -C(H)(R 8 H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 40 or where m and n are independently 1 to 3, r is 0 to 2, and R 8 is defined the same way as R 6 or -(CH 2 XsNR 6 R 7 where s is 1-6 and R6 and R 7 are as defined in section of the definition of substituent, above; and the substituents for R 5 are independently halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, C- alkyl or alkenyl or arylalkyl imino, carbamoyl, azido, carboxamido, mercapto, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, C 1 -C8alkyl, C1-C8 alkenyl, C1-C8 alkoxy, Cj- C alkoxycarbonyl, aryloxycarbonyl, C2-C8 acyl, 01-08 alkylthio, arylalkylthio, arylthio, C1-C8 alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, C1-C alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, C1-C, N-alkyl carbamoyl, C2-C15 N,N-dialkylcarbamoyl, C3-C7 cycloalkyl, aroyl, aryloxy, arylalkyl ether, aryl, aryl fused to a cycloalkyl or heterocycle or another aryl ring, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic, or aromatic ring; or -NR 6 R, where R 6 and R 7 are each independently hydrogen, cyano, oxo, carboxamido, amidino, C1-Cs hydroxyalkyl, C 1 -C 3 alkylaryl, aryl-C 1 -C 3 alkyl, C1-C8 alkyl, C 1 -C8 alkenyl, C 1 -C alkoxy, C-C alkoxycarbonyl, aryloxycarbonyl, aryl- C1-C3 akoxycarbonyl, C1-Cs alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, aroyl, aryl, aryl fused to a cycloalkyl or heterocyclic or another aryl ring, C3-07 cycloalkyl, C3-C7 heterocycle, or any of these rings fused or spiro-fused to a cycloakyl or heterocyclic or aromatic ring; or R 6 and R 7 are taken together to form -(CH 2 )mB(CH 2 )n where B is -C(H)(R 8 N(R 8 or where m and n are independently 1 to 3, r is 0 to 2, and R" is defined the same way as R 6 or -(CH 2 )sNR 6 R 7 where s is 1-6 and R6 and R 7 are as defined in section of the definition of substituent, above.

2. A compound according to Claim 1 of Formula XIV-A or Formula XIV-B, R12 R3 CH R 2 R 1 M R 13 4 R 3 R" M N N R' or R2 Z ON NR XIV-A XIV-A XIV-B H:\Shona\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 41 wherein R 2 R 3 R 4 R 5 and Z are as defined in claim 1; M is OH, N, 0, or S, provided when M is 0 or S there is no R1 R 11 R 12 ,and R 1 3 are each independently hydrogen, halogen, cyano, oxo, carboxy, formyl, nitro, amino, amidino, guanidino, Cj-C 5 alkyl or alkenyl or arylalkyl imino, azido, mercapto, carboxamido, hydroxy, hydroxyalkyl, alkylaryl, arylalkyl, 01-08 alkyl, jC alkenyl, 01-08 alkoxy, 01-08 alkoxycarbonyl, 02-Ca acyl, 0j-C8 alkylthio, arylalkylthio, arylthio, Cl-Ca alkylsulfinyl, arylalkylsulfinyl, arylsulfinyl, Cl-C~ alkylsulfonyl, arylalkylsulfonyl, arylsulfonyl, Cj-C6 N-alkyl carbamoyl, 02-C 15 N, N-dialkylcarbamoyl, 01-05 alkyl or alkenyl or arylalkyl ester, 01-07 cycloalkyl, aroyl, aryloxy, benzyloxy, benzyloxy substituted with one or more substituents, aryl, aryl substituted with one or more substituents, 03-07 heterocycle, or any of these rings fused or spiro-fused to a cycloalkyl, heterocyclic or aromatic ring, or -NR 6 R 7 or -(CH 2 )NR 6 R 7 where s is 1-6 and R 6 and R 7 are as defined in section of the definition of substituent; or R 11 R 12 and R'1 3 each either independently or in combination are a spiro, fused, or bridged ring.

3. A compound according to Claim 2 selected from the group consisting of: 1 3 9 -Ethylcarbazolyl)carbamoylethylaminoNmethyl(2oxo6pentyl-2H- pyran-3-carboxamide); 1 -Methyl-i -[3-(9-ethylcarbazolyl )carbamoyl]-ethylamino-N-methyl-(2-oxo-6 pentyl- 2H-pyran-3-carboxamide); 1 -[3-(9-Ethylcarbazolyl)carbamoyl]isayaioN-ehl(-xo6pny-H pyran-3-ca rboxamide); 1 -j 3 9 -Ethylcarbazolyl)carbamoyl]isobutylaminoNmethyl(2oxo6pentyl-2H. pyran-3-carboxamide); 1 -[3-(9-Ethylcarbazolyl )carbamoyl]phenylethylamino-Nmethyl(2oxo-6pentyl. 2H- pyran-3-carboxamide); 1 3 9 -Ethylcarbazolyl)carbamoyl]2hydroxyethylaminoNmethyl.(2-oxo-6 pentyl- 2H-pyran-3-carboxamide); 1 -[3-(9-Ethylca rbazolyl )carbamoyl] methylamino-N-methyl-(2-oxo-6-pentyl-2H- pyran-3-carboxamide); 1 3 9 -Ethylcarbazolyl)carbamoyl~methylamino-Nethyl(2oxo-6-pentyl.2H- pyran-3-carboxamide); and 1 -Methyl-i 3 9 -ethylcarbazolyl)carbamoyl-ethylamino(2oxo6pentyl-2H- pyran-3-carboxamide); or a pharmaceutically acceptable addition salt thereof. H:\Shona1\Keep\SPeci\P53478 DIVISIONAL SPECI 25/06/04 42

4. A compound according to any one of Claims 1 to 3 for use as a medicament.

Use of a compound according to any one of Claims 1 to 3 in the manufacture of a medicament.

6. Use according to Claim 5, wherein the medicament exerts an FSH agonistic activity.

7. A pharmaceutical composition comprising a compound according to any one of Claims 1 to 3 and a pharmaceutically acceptable carrier, diluent or excipient thereof.

8. A pharmaceutical composition comprising a compound as claimed in any one of Claims 1 to 3 and a pharmaceutically acceptable carrier, diluent or excipient thereof, in combination with FSH.

9. A pharmaceutical composition comprising a compound as claimed in any one of Claims 1 to 3 and a pharmaceutically acceptable carrier, diluent or excipient thereof, in combination with Clomiphene citrate.

A pharmaceutical composition comprising a compound as claimed in any one of Claims 1 to 3 and a pharmaceutically acceptable carrier, diluent or excipient thereof, in combination with human chononic gonadotropin (hCG) or human pituitary leutenizing hormone (LH).

11. A method for treating infertility comprising administering an effective FSH agonistic amount of a compound according to any one of Claims 1 to 3 or a composition according to any one of Claims 7 to 10 to a subject in need thereof.

12. Use of a compound according to any one of Claims 1 to 3 or a compound according to any one of Claims 7 to 10 in the manufacture of a medicament to treat infertility.

13. Use of a compound according to any one of Claims 1 to 3 or a compound according to any one of Claims 7 to 10 to treat infertility. H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04 43

14. Compounds of formula I, pharmaceutical compositions comprising them, or methods or uses involving them, substantially as herein described with reference to any one of the accompanying examples and/or figures. Dated this 2 5 th day of June 2004 APPLIED RESEARCH SYSTEMS ARS HOLDING NV By their Patent Attorneys GRIFFITH HACK Fellows Institute of Patent and Trade Mark Attorneys of Australia H:\Shonal\Keep\Speci\P53478 DIVISIONAL SPECI 25/06/04