WO2014033631A1 - N- (3-pyridyl)-biarylamides en tant qu'inhibiteurs de kinase - Google Patents

N- (3-pyridyl)-biarylamides en tant qu'inhibiteurs de kinase Download PDF

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WO2014033631A1
WO2014033631A1 PCT/IB2013/058034 IB2013058034W WO2014033631A1 WO 2014033631 A1 WO2014033631 A1 WO 2014033631A1 IB 2013058034 W IB2013058034 W IB 2013058034W WO 2014033631 A1 WO2014033631 A1 WO 2014033631A1
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compound
equiv
difluoro
methyl
yield
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Matthew Burger
Gisele Nishiguchi
Alice Rico
Robert Lowell Simmons
JR. Victoriano TAMEZ
Huw Tanner
Lifeng Wan
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Novartis Ag
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/14—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

  • the present invention relates to new compounds and compositions of the new compounds together with pharmaceutically acceptable carriers, and uses of the new compounds, either alone or in combination with at least one additional therapeutic agent, in the prophylaxis or treatment of cancer and other cellular proliferation disorders.
  • PIM-Kinase Provirus Integration of Moloney Kinase (PIM-Kinase) was identified as one of the frequent proto-oncogenes capable of being transcriptionally activated by this retrovirus integration event (Cuypers HT et al, "Murine leukemia virus-induced T-cell lymphomagenesis: integration of pro viruses in a distinct chromosomal region," Cell 37(1): 141-50 (1984); Selten G, et al, "Proviral activation of the putative oncogene Pim-1 in MuLV induced T-cell lymphomas” EMBO J 4(7): 1793-8 (1985)), thus establishing a correlation between over-expression of this kinase and its oncogenic potential.
  • Piml being the proto-oncogene originally identified by retrovirus integration.
  • transgenic mice over- expressing Piml or Pim2 show increased incidence of T-cell lymphomas (Breuer M et al., "Very high frequency of lymphoma induction by a chemical carcinogen in pim-1 transgenic mice” Nature 340(6228):61-3 (1989)), while over-expression in conjunction with c-myc is associated with incidence of B-cell lymphomas (Verbeek S et al., "Mice bearing the E mu-myc and E mu-pim-1 transgenes develop pre-B-cell leukemia prenatally" Mol Cell Biol 11(2): 1176-9 (1991)).
  • Piml, 2 & 3 are Serine/Threonine kinases that normally function in survival and proliferation of hematopoietic cells in response to growth factors and cytokines.
  • Substrates for Pim kinases include regulators of apoptosis such as the Bcl-2 family member BAD. The effects of Pim(s) in these regulators are consistent with a role in protection from apoptosis and promotion of cell proliferation and growth.
  • Bcl-2 family member BAD the Bcl-2 family member BAD.
  • the effects of Pim(s) in these regulators are consistent with a role in protection from apoptosis and promotion of cell proliferation and growth.
  • over- expression of Pim(s) in cancer is thought to play a role in promoting survival and proliferation of cancer cells and, therefore, their inhibitions should be an effective way of treating cancers in which they are over-expressed.
  • Pim kinase inhibitors show activity in animal models of inflammation and autoimmune diseases. See JE Robinson “Targeting the Pim Kinase Pathway for Treatment of Autoimmune and Inflammatory Diseases," for the Second Annual Conference on Anti-Inflammatories: Small Molecule Approaches,” San Diego, CA (Conf. April 2011; Abstract published earlier on-line).
  • the present invention addresses such needs.
  • the present invention provides novel compounds that inhibit activity of one or more Pirns, preferably two or more Pirns, more preferably Piml, Pim2 and Pim3, at nanomolar levels (e.g., IC-50 under 50 nM) and exhibit distinctive characteristics that may provide improved therapeutic effects and pharmacokinetic properties, such as reduced drug-drug interactions associated with inhibition of cytochrome oxidases, relative to compounds previously disclosed.
  • Compounds of the invention contain novel substitution combinations on one or more rings that provide these distinctive properties and are suitable for treating Pim-related conditions such as those described herein.
  • the invention provides unsaturated compounds of Formula (I) that inhibit one or more Pirn kinases:
  • the invention provides unsaturated compounds of Formula (I) that inhibit one or more Pirn kinases:
  • Z is CH or N
  • Aromatic ring A is a pyridine, pyrimidine, pyrazine, or thiazole ring with N located as shown;
  • ft 1 is H, Me, Et, -CH 2 OH, or -CH 2 OMe
  • Pv 2 is Ci_4 alkyl, CF 3 , or phenyl optionally substituted with 1-2 groups selected from halo, hydroxy, Ci_ 4 alkyl, Ci_ 4 alkoxy, Ci_ 4 haloalkyl, Ci_ 4
  • Pv 3 is halo, Me, CF 3 , or NH 2 independently at each occurrence; and each R 4 is independently selected from halo, CN, NH 2 , hydroxy, Ci_ 4 haloalkyl, -S(0) p -R*, Ci_ 4 haloalkoxy, -(CH 2 ) 0 _ 3 -OR*, -0-(CH 2 )i_ 3 -OR*, COOR*, C(0)R*, -CONR*2, -(CR' 2 )i_ 3 -OR' or and an optionally substituted member selected from the group consisting of Ci_ 6 alkyl, Ci_ 6 alkoxy, Ci_6 alkylthio, Ci_ 6 alkylsulfonyl, C 3 _ 7 cycloalkyl, and C 3 _ 7 heterocycloalkyl, wherein Ci_ 6 alkyl, Ci_ 6 alkoxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulfony
  • each R* is independently H or a 4-7 membered cyclic ether, 4- 6 membered cycloalkyl, or Ci_ 6 alkyl, each of which is optionally substituted with up to three groups selected from halo, oxo, Ci_ 4 alkyl, Ci_ 4 alkoxy, OH, NH 2 , COOH, COOMe, COOEt, OMe, OEt, and CN;
  • n 1 , 2 or 3;
  • n 0, 1 or 2;
  • p 0, 1 or 2;
  • These compounds are inhibitors of Pirn kinases as further discussed herein. These compounds and their pharmaceutically acceptable salts, and pharmaceutical compositions containing these compounds and salts, are useful for therapeutic methods such as treatment of cancers and autoimmune disorders that are caused by or exacerbated by excessive levels of Pirn kinase activity.
  • PIM inhibitor is used herein to refer to a compound that exhibits an IC 50 with respect to PIM Kinase activity of no more than about 100 ⁇ and more typically not more than about 5 ⁇ , as measured in the PIM depletion assays described herein below for at least one of Piml , Pim2 and Pim3.
  • Preferred compounds have on IC 50 below about 1 micromolar on at least one Pirn, and generally have an IC 50 below 100 nM on each of Piml , Pim2 and Pim3.
  • alkyl refers to hydrocarbon groups that do not contain heteroatoms, i.e., they consist of carbon atoms and hydrogen atoms.
  • the phrase includes straight chain alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl and the like.
  • the phrase also includes branched chain isomers of straight chain alkyl groups, including but not limited to, the following which are provided by way of example: -
  • alkyl' includes primary alkyl groups, secondary alkyl groups, and tertiary alkyl groups. Alkyl groups are described herein according to the number of carbon atoms they contain, e.g., an alkyl group containing up to six carbon atoms is described as a CI -6 or Ci_ 6 , or C1-C6 alkyl.
  • Typical alkyl groups include straight and branched chain alkyl groups having 1 to 12 carbon atoms, preferably 1-6 carbon atoms.
  • the term 'lower alkyl' or “loweralkyl” and similar terms refer to alkyl groups containing up to 6 carbon atoms.
  • alkenyl refers to alkyl groups as defined above, wherein there is at least one carbon-carbon double bond, i.e., wherein two adjacent carbon atoms are attached by a double bond.
  • alkynyl refers to alkyl groups wherein two adjacent carbon atoms are attached by a triple bond.
  • Typical alkenyl and alkynyl groups contain 2-12 carbon atoms, preferably 2-6 carbon atoms.
  • Lower alkenyl or lower alkynyl refers to groups having up to 6 carbon atoms.
  • An alkenyl or alkynyl group may contain more than one unsaturated bond, and may include both double and triple bonds, but of course their bonding is consistent with well-known valence limitations.
  • alkoxy refers to -OR, wherein R is alkyl.
  • halogen refers to chloro, bromo, fluoro and iodo groups. Typical halo substituents are F and/or CI.
  • Haloalkyl refers to an alkyl radical substituted with one or more halogen atoms, typically 1-3 halogen atoms. The term “haloalkyl” thus includes monohalo alkyl, dihalo alkyl, trihalo alkyl, perhaloalkyl, and the like.
  • Amino refers herein to the group -NH 2 .
  • alkylamino refers herein to the group -NRR where R and R are each independently selected from hydrogen or a lower alkyl, provided -NRR' is not -NH 2 .
  • arylamino refers herein to the group -NRR' where R is aryl and R' is hydrogen, a lower alkyl, or an aryl.
  • aralkylamino refers herein to the group -NRR where R is a lower aralkyl and R is hydrogen, a loweralkyl, an aryl, or a loweraralkyl.
  • alkoxyalkyl refers to the group -alki-0-alk 2 where alki is an alkyl linking group, and alk 2 is alkyl, e.g., a group such as -0-(CH 2 ) 2 -0-CH 3 .
  • loweralkoxyalkyl refers to an alkoxyalkyl where alki is loweralkyl and alk 2 is loweralkyl.
  • aryloxyalkyl refers to the group -alkyl-O-aryl, where -alkyl- is a C 1-12 straight or branched chain alkyl linking group, preferably C 1-6 .
  • aralkoxyalkyl refers to the group -alkyl-O-aralkyl, where aralkyl is preferably a loweraralkyl.
  • aminocarbonyl refers herein to the group -C(0)-NH 2 .
  • substituted aminocarbonyl refers herein to the group -C(0)-NRR where R is loweralkyl and R' is hydrogen or a loweralkyl. In some embodiments, R and R, together with the N atom attached to them may be taken together to form a "heterocycloalkylcarbonyl” group.
  • arylaminocarbonyl refers herein to the group -C(0)-NRR where R is an aryl and R is hydrogen, loweralkyl or aryl.
  • aralkylaminocarbonyl refers herein to the group - C(0)-NRR' where R is loweraralkyl and R is hydrogen, loweralkyl, aryl, or loweraralkyl.
  • aminosulfonyl refers herein to the group -S(0) 2 -NH 2 .
  • Substituted aminosulfonyl refers herein to the group -S(0) 2 -NRR' where R is loweralkyl and R' is hydrogen or a loweralkyl.
  • aralkylaminosulfonlyaryl refers herein to the group -aryl-S(0) 2 -NH-aralkyl, where the aralkyl is loweraralkyl.
  • Carbonyl refers to the divalent group -C(O)-.
  • Cycloalkyl refers to a mono- di- or poly-cyclic, carbocyclic alkyl substituent in which all ring atoms are carbon. Typical cycloalkyl groups have from 3 to 8 backbone (i.e., ring) atoms.
  • polycyclic refers herein to fused and non-fused alkyl cyclic structures, including spirocyclic ring systems.
  • partially unsaturated cycloalkyl all refer to a cycloalkyl group wherein there is at least one unsaturated carbon-carbon bond in the ring, i.e., wherein two adjacent ring atoms are connected by a double bond or a triple bond.
  • Such rings typically contain 1 or 2 double bonds for 5-6 membered rings, and 1-2 double bonds or one triple bond for 7-8 membered rings.
  • Illustrative examples include cyclohexenyl, cyclooctynyl, cyclopropenyl, cyclobutenyl, cyclohexadienyl, and the like.
  • heterocycloalkyl refers herein to cycloalkyl substituents that have from 1 to 5, and more typically from 1 to 3 heteroatoms as ring members in place of carbon atoms.
  • heterocycloalkyl or “heterocyclyl” groups contain one or two heteroatoms as ring members, typically only one heteroatom for 3-5 membered rings and 1-2 heteroatoms for 6-8 membered rings.
  • Suitable heteroatoms employed in heterocyclic groups of the present invention are nitrogen, oxygen, and sulfur.
  • heterocycloalkyl moieties include, for example, pyrrolidinyl, tetrahydrofuranyl, oxirane, oxetane, oxepane, thiirane, thietane, azetidine, morpholino, piperazinyl, piperidinyl and the like.
  • substituted heterocycle refers to any 3- or 4-membered ring containing a heteroatom selected from nitrogen, oxygen, and sulfur or a 5- or 6-membered ring containing from one to three heteroatoms, preferably 1-2 heteroatoms, selected from the group consisting of nitrogen, oxygen, or sulfur; wherein the 5 -membered ring has 0-2 double bonds and the 6-membered ring has 0-3 double bonds; wherein the nitrogen and sulfur atom maybe optionally oxidized; wherein the nitrogen and sulfur heteroatoms may be optionally quarternized; and including any bicyclic group in which any of the above heterocyclic rings is fused to a benzene ring or another 5- or 6-membered heterocyclic ring or heteroaryl as described herein.
  • Preferred heterocycles include, for example: diazapinyl, pyrrolinyl, pyrrolidinyl, pyrazolinyl, pyrazolidinyl, imidazolinyl, imidazolidinyl, piperidinyl, piperazinyl, N-methyl piperazinyl, azetidinyl, N-methylazetidinyl, oxazolidinyl, isoxazolidinyl, morpholinyl, thiazolidinyl, isothiazolidinyl, and oxiranyl.
  • the heterocyclic groups may be attached at various positions as will be apparent to those having skill in the organic and medicinal chemistry arts in conjunction with the disclosure herein.
  • substituted heterocyclic groups will have up to four substituent groups.
  • cyclic ether refers to a 3-7 membered ring containing one oxygen atom (O) as a ring member. Where the cyclic ether is "optionally substituted” it can be substituted at any carbon atom with a group suitable as a substituent for a heterocyclic group, typically up to three substituents selected from lower alkyl, lower alkoxy, halo, hydroxy, amino, -C(0)-lower alkyl, and -C(0)-lower alkoxy. In preferred embodiments, halo, hydroxy and lower alkoxy are not attached to the carbon atoms of the ring that are bonded directly to the oxygen atom in the cyclic ether ring.
  • oxirane e.g., 3-oxetane
  • tetrahydrofuran including 2-tetrahydrofuranyl and 3-tetrahydrofuranyl
  • tetrahydropyran e.g., 4-tetrahydropyranyl
  • oxepane e.g., oxirane, oxetane (e.g., 3-oxetane), tetrahydrofuran (including 2-tetrahydrofuranyl and 3-tetrahydrofuranyl), tetrahydropyran (e.g., 4-tetrahydropyranyl), and oxepane.
  • Aryl refers to monocyclic and polycyclic aromatic groups having from 5 to 14 backbone carbon or hetero atoms, and includes both carbocyclic aryl groups and heteroaromatic aryl groups.
  • Carbocyclic aryl groups are aryl groups in which all ring atoms in the aromatic ring are carbon, typically including phenyl and naphthyl.
  • Exemplary aryl moieties employed as substituents in compounds of the present invention include phenyl, pyridyl, pyrimidinyl, thiazolyl, indolyl, imidazolyl, oxadiazolyl, tetrazolyl, pyrazinyl, triazolyl, thiophenyl, furanyl, quinolinyl, purinyl, naphthyl, benzothiazolyl, benzopyridyl, and benzimidazolyl, and the like.
  • polycyclic aryl refers herein to fused and non-fused cyclic structures in which at least one cyclic structure is aromatic, such as, for example, benzodioxozolo (which has a heterocyclic structure fused to a phenyl group, naphthyl, and the like.
  • aryl is used, the group is preferably a carbocyclic group; the term “heteroaryl” is used for aryl groups when ones containing one or more heteroatoms are preferred.
  • heteroaryl refers herein to aryl groups having from 1 to 4 heteroatoms as ring atoms in an aromatic ring with the remainder of the ring atoms being carbon atoms, in a 5-14 atom aromatic ring system that can be monocyclic or polycyclic.
  • Monocyclic heteroaryl rings are typically 5-6 atoms in size.
  • heteroaryl moieties employed as substituents in compounds of the present invention include pyridyl, pyrimidinyl, thiazolyl, indolyl, imidazolyl, oxadiazolyl, tetrazolyl, pyrazinyl, triazolyl, thiophenyl, furanyl, quinolinyl, purinyl, benzothiazolyl, benzopyridyl, and benzimidazolyl, and the like.
  • Alkyl or “arylalkyl” refers to an aryl group connected to a structure through an alkylene linking group, e.g., a structure such as -(CH 2 )i_4-Ar, where Ar represents an aryl group.
  • “Lower aralkyl” or similar terms indicate that the alkyl linking group has up to 6 carbon atoms.
  • Optionally substituted or “substituted” refers to the replacement of one or more hydrogen atoms with a non-hydrogen group.
  • Alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl groups described herein may be substituted or unsubstituted.
  • Suitable substitution groups include, for example, hydroxy, nitro, amino, imino, cyano, halo, thio, sulfonyl, thioamido, amidino, imidino, oxo, oxamidino, methoxamidino, imidino, guanidino, sulfonamido, carboxyl, formyl, loweralkyl, haloloweralkyl, loweralkylamino, haloloweralkylamino, lower alkoxy, lower haloalkoxy, lower alkoxyalkyl, alkylcarbonyl, aminocarbonyl, arylcarbonyl, aralkylcarbonyl, heteroarylcarbonyl, heteroaralkylcarbonyl, alkylthio, aminoalkyl, cyanoalkyl, aryl and the like, provided that oxo, imidino or other divalent substitution groups are not placed on aryl or heteroaryl rings due
  • optional substituents for alkyl, alkenyl, alkynyl, cycloalkyl, and heterocycloalkyl groups are 1-3 groups selected from halo, hydroxy, amino, cyano, lower alkoxy, lower alkylsulfonyl, oxy, carboxy, and lower alkoxy carbonyl.
  • optional substituents for aryl and heteroaryl groups are 1-3 groups selected from halo, hydroxy, amino, cyano, lower alkyl, lower alkoxy, lower alkylsulfonyl, carboxy, and lower alkoxy carbonyl.
  • the substitution group can itself be substituted where valence permits, i.e., where the substitution group contains at least one CH, NH or OH having a hydrogen atom that can be replaced.
  • the group substituted onto the substitution group can be carboxyl, halo (on carbon only); nitro, amino, cyano, hydroxy, loweralkyl, loweralkoxy, C(0)R, - OC(0)R, -OC(0)OR, -NRCOR, -CONR 2 , -NRCOOR, -C(S)NR 2 , -NRC(S)R, - OC(0)NR 2 , , -SR, -SO 3 H, -S0 2 R or C3-8 cycloalkyl or 3-8 membered heterocycloalkyl, where each R is independently selected from hydrogen, lower haloalkyl, lower alkoxyalkyl, and loweralkyl, and where two R on the same atom or on directly connected atoms can be linked together to form a 5-6
  • a substituted substituent when a substituted substituent includes a straight chain group, the substitution can occur either within the chain (e.g., 2-hydroxypropyl, 2-aminobutyl, and the like) or at the chain terminus (e.g., 2-hydroxyethyl, 3-cyanopropyl, and the like).
  • Substituted substituents can be straight chain, branched or cyclic arrangements of covalently bonded carbon or heteroatoms.
  • impermissible substitution patterns e.g., methyl substituted with five fluoro groups or a halogen atom substituted with another halogen atom. Such impermissible substitution patterns are well known to the skilled artisan.
  • “Syn” as used herein has its ordinary meaning, and is used in connection with Formula I to indicate that the specified groups are attached to sp 3 hybridized (tetrahedral) carbon centers and extend out from one face of the cyclohexyl or piperidinyl ring, i.e., those groups all project toward the 'alpha' face of the ring, or they all project toward the 'beta' face of the ring.
  • This is thus used as a convenient way to define the relative orientations of two or more groups on a ring, without limiting the compounds to a specific absolute chiral configuration. This reflects the fact that the compounds of the invention have such groups in a specific relative orientation, but are not limited to either enantiomer of that specific relative orientation.
  • such compounds may be racemic, but also include each of the two enantiomers having the specified relative stereochemistry.
  • the compounds of the invention are optically active form as further described herein, and in preferred embodiments of the invention, the compounds are obtained and used in optically active form.
  • the enantiomer having greater potency as an inhbitor of at least two of Piml, Pim2 and Pim3 is selected.
  • the compounds of the invention may be subject to tautomerization and may therefore exist in various tautomeric forms wherein a proton of one atom of a molecule shifts to another atom and the chemical bonds between the atoms of the molecules are consequently rearranged.
  • tautomer refers to the compounds produced by the proton shift, and it should be understood that all tautomeric forms, insofar as they may exist, are included within the invention.
  • the compounds of the invention comprise one or more asymmetrically substituted carbon atoms.
  • asymmetrically substituted carbon atoms can result in the compounds of the invention existing in enantiomers, diastereomers, and other stereoisomeric forms that may be defined, in terms of absolute stereochemistry, such as in (R)- or (S)- forms.
  • the compounds of the invention are sometimes depicted herein as single enantiomers, and are intended to encompass the specific configuration depicted and the enantiomer of that specific configuration (the mirror image isomer of the depicted configuration), unless otherwise specified— e.g., where a structure is labeled 'chiral', it represents the specified absolute stereochemistry as a single substantially pure (i.e., at least about 95% pure) enantiomer.
  • the depicted structures herein describe the relative stereochemistry of the compounds where two or more chiral centers, but the invention is not limited to the depicted enantiomer's absolute stereochemistry unless otherwise stated.
  • the invention includes both enantiomers, each of which will exhibit Pim inhibition, even though one enantiomer will be more potent than the other.
  • compounds of the invention have been synthesized in racemic form and separated into individual isomers by chiral chromatography or similar conventional methods, and the analytical data about the two enantiomers do not provide definitive information about absolute stereochemical configuration.
  • the absolute stereochemistry of the most active enantiomer has been identified based on correlation with similar compounds of known absolute stereochemistry, rather than by a definitive physical method such as X- ray crystallography.
  • the preferred enantiomer of a compound described herein is the specific isomer depicted or its opposite enantiomer, whichever has the lower IC-50 for Pim kinase inhibition using the assay methods described herein, i.e., the enantiomer that is more potent as a Pim inhibitor for at least two of Pim 1, Pim2, and Pim3.
  • S and R configuration are as defined by the IUPAC 1974 RECOMMENDATIONS FOR SECTION E, FUNDAMENTAL STEREOCHEMISTRY, Pure Appl. Chem. 45: 13-30 (1976).
  • the terms a and ⁇ are employed for ring positions of cyclic compounds.
  • the a-side of the reference plane is that side on which the preferred substituent lies at the lower numbered position.
  • Those substituents lying on the opposite side of the reference plane are assigned ⁇ descriptor. It should be noted that this usage differs from that for cyclic stereoparents, in which "a” means “below the plane” and denotes absolute configuration.
  • a and ⁇ configuration are as defined by the CHEMICAL ABSTRACTS INDEX GUIDE -APPENDIX IV (1987) paragraph 203.
  • the term "pharmaceutically acceptable salts” refers to the nontoxic acid or base addition salts of the compounds of Formulas I, II, etc., wherein the compound acquires a positive or negative charge as a result of adding or removing a proton; the salt then includes a counterion of opposite charge from the compound itself, and the counterion is preferably one suitable for pharmaceutical administration under the conditions where the compound would be used.
  • These salts can be prepared in situ during the final isolation and purification of the compounds of Formula I or II, or by separately reacting the base or acid functions with a suitable organic or inorganic acid or base, respectively.
  • Representative salts include but are not limited to the following: acetate, adipate, alginate, citrate, aspartate, benzoate, benzenesulfonate, bisulfate, butyrate, camphorate, camphorsulfonate, digluconate, cyclopentanepropionate, dodecylsulfate, ethanesulfonate, glucoheptanoate, glycerophosphate, hemisulfate, heptanoate, hexanoate, fumarate, hydrochloride, hydrobromide, hydroiodide, 2-hydroxyethanesulfonate, lactate, maleate, methanesulfonate, nicotinate, 2-naphthalenesulfonate, oxalate, pamoate, pectinate, persulfate, 3-phenylproionate, picrate, pivalate, propionate, succinate, sulfate,
  • a basic nitrogen-containing group in compounds of the invention can be quaternized with such agents as loweralkyl halides, such as methyl, ethyl, propyl, and butyl chloride, bromides, and iodides; dialkyl sulfates like dimethyl, diethyl, dibutyl, and diamyl sulfates, long chain halides such as decyl, lauryl, myristyl and stearyl chlorides, bromides and iodides, aralkyl halides like benzyl and phenethyl bromides, and others. Water or oil-soluble or dispersible products are thereby obtained.
  • These quaternized ammonium salts when paired with a pharmaceutically acceptable anion can also serve as pharmaceutically acceptable salts.
  • acids which may be employed to form pharmaceutically acceptable acid addition salts include such inorganic acids as hydrochloric acid, sulfuric acid and phosphoric acid and such organic acids as oxalic acid, maleic acid, methanesulfonic acid, succinic acid and citric acid.
  • Basic addition salts can be prepared in situ during the final isolation and purification of the compounds of formula (I), or separately by reacting carboxylic acid moieties 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.
  • Counterions for pharmaceutically acceptable salts include, but are not limited to, cations based on the alkali and alkaline earth metals, such as sodium, lithium, potassium, calcium, magnesium, aluminum salts and the like, as well as nontoxic ammonium, quaternary ammonium, and amine cations, including, but not limited to ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, and the like.
  • Other representative organic amines useful for the formation of base addition salts include diethylamine, ethylenediamine, ethanolamine, diethanolamine, piperazine and the like.
  • ester refers to esters, which hydrolyze in vivo and include those that break down readily in the human body to leave the parent compound or a salt thereof.
  • Suitable ester groups include, for example, those derived from pharmaceutically acceptable aliphatic carboxylic acids, particularly alkanoic, alkenoic, cycloalkanoic and alkanedioic acids, in which each alkyl or alkenyl moiety advantageously has not more than 6 carbon atoms.
  • examples of particular pharmaceutically acceptable esters include formates, acetates, propionates, maleates, lactates, hydroxyacetates, butyrates, acrylates and ethylsuccinates.
  • prodrugs refers to those prodrugs of the compounds of the present invention which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response, and the like, commensurate with a reasonable benefit/risk ratio, and effective for their intended use, as well as the zwitterionic forms, where possible, of the compounds of the invention.
  • prodrug refers to compounds that are rapidly transformed in vivo to yield the parent compound of the above formula, for example by hydrolysis in blood. A thorough discussion is provided in T. Higuchi and V. Stella, PRO-DRUGS AS NOVEL DELIVERY SYSTEMS, Vol. 14 of the A.C.S.
  • the invention includes various isotopically labeled compounds as defined herein, for example those into which radioactive isotopes, such as 3 H and 14 C, or those into which non-radioactive isotopes, such as 2 H and 13 C are present.
  • Such isotopically labelled compounds are useful in metabolic studies (with 14 C), reaction kinetic studies (with, for example 2 H or 3 H), detection or imaging techniques, such as positron emission tomography (PET) or single- photon emission computed tomography (SPECT) including drug or substrate tissue distribution assays, or in radioactive treatment of patients.
  • PET positron emission tomography
  • SPECT single- photon emission computed tomography
  • an 18F or labeled compound may be particularly desirable for PET or SPECT studies.
  • Isotopically-labeled compounds of formula (I) can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the accompanying Examples and Preparations using an appropriate isotopically-labeled reagents in place of the non-labeled reagent previously employed.
  • isotopic enrichment factor means the ratio between the isotopic abundance and the natural abundance of a specified isotope.
  • a substituent in a compound of this invention is denoted deuterium, such compound has an isotopic enrichment factor for each designated deuterium atom of at least 3500 (52.5% deuterium incorporation at each designated deuterium atom), at least 4000 (60% deuterium incorporation), at least 4500 (67.5% deuterium incorporation), at least 5000 (75% deuterium incorporation), at least 5500 (82.5% deuterium incorporation), at least 6000 (90%) deuterium incorporation), at least 6333.3 (95%> deuterium incorporation), at least 6466.7 (97% deuterium incorporation), at least 6600 (99% deuterium incorporation), or at least 6633.3 (99.5%> deuterium incorporation).
  • solvates in accordance with the invention include those wherein the solvent of crystallization may be isotopically substituted, e.g. D 2 0, d 6 - acetone, d 6 -DMSO.
  • Compounds of the invention i.e. compounds of formula (I) that contain groups capable of acting as donors and/or acceptors for hydrogen bonds may be capable of forming co-crystals with suitable co-crystal formers.
  • These co-crystals may be prepared from compounds of formula (I) by known co-crystal forming procedures. Such procedures include grinding, heating, co-subliming, co-melting, or contacting in solution compounds of formula (I) with the co-crystal former under crystallization conditions and isolating co-crystals thereby formed.
  • Suitable co-crystal formers include those described in WO 2004/078163.
  • the invention further provides co-crystals comprising a compound of formula (I).
  • the invention provides compounds of Formula I:
  • Z is CH or N
  • Aromatic ring A is a pyridine, pyrimidine, pyrazine, or thiazole ring with N located as shown;
  • R 1 is H, Me, Et, -CH 2 OH, or -CH 2 OMe
  • R 2 is Ci_4 alkyl, CF 3 , or phenyl optionally substituted with 1-2 groups selected from halo, hydroxy, Ci_ 4 alkyl, Ci_ 4 alkoxy, Ci_ 4 haloalkyl, Ci_ 4 haloalkoxy, and CN;
  • R 3 is halo, Me, CF 3 , or NH 2 independently at each occurrence; and each R 4 is independently selected from halo, CN, NH 2 , hydroxy, Ci_ 4 haloalkyl, -S(0) p -R*, Ci_ 4 haloalkoxy, -(CH 2 ) 0 _ 3 -OR*, -0-(CH 2 )i_ 3 -OR*, COOR*, C(0)R*, -CONR* 2 , -(CR' 2 )i-3-OR' or -(CR' 2 )i- 3 -OR', and an optionally substituted member selected from the group consisting of Ci_ 6 alkyl, Ci_ 6 alkoxy, Ci_6 alkylthio, Ci_ 6 alkylsulfonyl, C3-7 cycloalkyl, and C3-7 heterocycloalkyl, wherein Ci_ 6 alkyl, Ci_ 6 alkoxy, Ci_ 6 alkylthio,
  • each R* is independently H or a 4-7 membered cyclic ether, 4- 6 membered cycloalkyl, or Ci_ 6 alkyl, each of which is optionally substituted with up to three groups selected from halo, oxo, Ci_ 4 alkyl, Ci_ 4 alkoxy, OH, NH 2 , COOH, COOMe, COOEt, OMe, OEt, and CN;
  • n 1, 2 or 3;
  • n 0, 1 or 2;
  • p 0, 1 or 2;
  • Z is CH or N
  • Aromatic ring A is a pyridine, pyrimidine, pyrazine, or thiazole ring with N located as shown;
  • R 1 is H, Me, Et, -CH 2 OH, or -CH 2 OMe
  • R 2 is Ci_ 4 alkyl, CF 3 , or phenyl optionally substituted with 1-2 groups selected from halo, hydroxy, Ci_ 4 alkyl, Ci_ 4 alkoxy, Ci_ 4 haloalkyl, Ci_ 4 haloalkoxy, and CN;
  • R 3 is halo, Me, CF 3 , or NH 2 independently at each occurrence; and each R 4 is independently selected from halo, CN, NH 2 , hydroxy, Ci_ 4 haloalkyl, -S(0) p -R*, Ci_ 4 haloalkoxy, -(CH 2 ) 0 _ 3 -OR*, -0-(CH 2 )i_ 3 -OR*, COOR*, C(0)R*, -CONR* 2 , -(CR' 2 )i_ 3 -OR' or and an optionally substituted member selected from the group consisting of Ci_ 6 alkyl, Ci_ 6 alkoxy, Ci_6 alky
  • each R* is independently H or a 4-7 membered cyclic ether, 4- 6 membered cycloalkyl, or Ci_ 6 alkyl, each of which is optionally substituted with up to three groups selected from halo, oxo, Ci_ 4 alkyl, Ci_ 4 alkoxy, OH, NH 2 , COOH, COOMe, COOEt, OMe, OEt, and CN;
  • n 1, 2 or 3;
  • n 0, 1 or 2;
  • p 0, 1 or 2;
  • R 3A (or R 3 ) is H, F or NH 2 .
  • each R 3A (or R 3 ) is independently H, F or NH 2 .
  • R T is H, OH, OMe, or F.
  • R 4 is an oxetanyl
  • R 0 is H, OH, OMe, or F.
  • a pharmaceutical composition comprising a compound of any of the preceding embodiments and at least one pharmaceutically acceptable excipient.
  • composition of embodiment 19, wherein the co-therapeutic agent is selected from irinotecan, topotecan, gemcitabine, 5-fluorouracil, cytarabine, daunorubicin, PI3 Kinase inhibitors, mTOR inhibitors, DNA synthesis inhibitors, leucovorin, carboplatin, cisplatin, taxanes, tezacitabine, cyclophosphamide, vinca alkaloids, imatinib, anthracyclines, rituximab, and trastuzumab.
  • the co-therapeutic agent is selected from irinotecan, topotecan, gemcitabine, 5-fluorouracil, cytarabine, daunorubicin, PI3 Kinase inhibitors, mTOR inhibitors, DNA synthesis inhibitors, leucovorin, carboplatin, cisplatin, taxanes, tezacitabine, cyclophosphamide, vin
  • a method to treat a condition caused or exacerbated by excessive Pirn kinase activity which comprises administering to a subject in need thereof an effective amount of a compound of any one of claims 1-17. 22. The method of embodiment 21, wherein the condition is a cancer.
  • the cancer is selected from carcinoma of the lungs, pancreas, thyroid, ovary, bladder, breast, prostate, or colon, melanoma, myeloid leukemia, multiple myeloma, erythroleukemia, villous colon adenoma, and osteosarcoma; or the autoimmune disorder is selected from Crohn's disease, inflammatory bowel disease, rheumatoid arthritis, and chronic inflammatory diseases.
  • Z can be N, but in preferred embodiments, Z is CH.
  • Aromatic ring A can be pyridine, pyrimidine, pyrazine, or thiazole, provided the ring is oriented so a nitrogen atom is positioned as shown in Formula I. Pyridine is sometimes preferred. Preferred orientations for the pyrimidine and thiazole ring are these:
  • n is 0 or 1 , preferably n is 1.
  • n is preferably 0 or 1.
  • the compounds of the invention contain at least one chiral center: in some embodiments, the compounds have the following stereochemistry:
  • R 1 H is preferred.
  • R 2 methyl is preferred.
  • Ring A is thiazole
  • R 3 is often NH 2 when n is 1.
  • n is often 0 or 1
  • R 3 is often NH 2 .
  • n can be 0, 1 or 2; and when present, each R 3 is often independently selected from halo and amino.
  • n can be 0 or 1 or 2 and is preferably 0 or 1; and when present, each R 3 is often independently selected from amino and halo.
  • At least one R 4 is selected from F, CI, NH 2 , Me, Et, OMe, OEt, OCF 3 , OCHF 2 , OCH 2 CF 3 , CN, CF 3 , SMe, SOMe, S0 2 Me, -COOMe, -C(0)Me, - C(Me) 2 -OH, MeOCH 2 -, HOCH 2 -, hydroxyethyl, hydroxyethoxy, methoxyethyl, methoxyethoxy, oxetanyl (e.g., 3-oxetanyl), tetrahydropyranyl, isopropoxy,
  • tetrahydropyranyloxy e.g., 4-tetrahydropyranyloxy
  • cyclopropyl e.g., cyclopropyl
  • CN cyclopropyl
  • the oxetane or tetrahydropyran rings can optionally be substituted with F, Me, OH, or OMe.
  • At least one R 4 is preferably selected from Me, F, NH 2 , OMe, MeOCH 2 -, HOCH 2 -, hydroxyethyl, hydroxyethoxy, methoxyethyl, methoxyethoxy, and CN.
  • m is 2 or 3, and two of the R 4 groups are F, while the third if present is selected from Me, Et, OMe, OEt, OCF 3 , OCHF 2 , OCH 2 CF 3 , CN, CF 3 , SMe, SOMe, S0 2 Me, - COOMe, -C(0)Me, -C(Me) 2 -OH, MeOCH 2 -, HOCH 2 -, hydroxyethyl, hydroxyethoxy, methoxyethyl, methoxyethoxy, oxetanyl (e.g., 3-oxetanyl), isopropoxy, tetrahydropyranyl (e.g., 4-tetrahydropyranyl), tetrahydropyranyloxy (e.g., 4-tetrahydropyranyloxy), cyclopropyl, and CN, where the oxetane or tetrahydropyran rings
  • Each of the species in Table 1 is a preferred embodiment of the invention.
  • the invention provides novel combinations of substituents on the cyclohexyl or piperidine ring and the phenyl ring that provide advantageous biological activities.
  • Advantages provided by preferred compounds include reduced drug-drug interactions, due to reduction of time-dependent Cyp inhibition, or pharmacokinetic superiority based on improved clearance and/or metabolic properties.
  • Each enantiomer can be used, and preferably the compound to be used is the enantiomer that has greater activity as a Pirn inhibitor.
  • a therapeutically effective dose will generally be a total daily dose administered to a host in single or divided doses may be in amounts, for example, of from 0.001 to 1000 mg/kg body weight daily, typically 0.01 to 100 mg/kg per day, and more preferred from 0.1 to 30 mg/kg body weight daily. Generally, daily dosage amounts of 1 to 4000 mg, or from 5 to 3000, or from 10 to 2000 mg, or from 100 to 2000 mg are anticipated for human subjects. Dosage unit compositions may contain such amounts or submultiples thereof to make up the daily dose.
  • the compounds of the present invention may be administered orally, parenterally, sublingually, by aerosolization or inhalation spray, rectally, or topically in dosage unit formulations containing conventional nontoxic pharmaceutically acceptable carriers, adjuvants, and vehicles as desired. Topical administration may also involve the use of transdermal administration such as transdermal patches or ionophoresis devices.
  • parenteral as used herein includes subcutaneous injections, intravenous, intramuscular, intrasternal injection, or infusion techniques. In preferred embodiments, the compound or composition of the invention is administered orally.
  • sterile injectable aqueous or oleaginous suspensions may be formulated according to the known art using suitable dispersing or wetting agents and suspending agents.
  • the sterile injectable preparation may also be a sterile injectable solution or suspension in a nontoxic parenterally acceptable diluent or solvent, for example, as a solution in 1,3-propanediol.
  • acceptable vehicles and solvents that may be employed are water, Ringer's solution, and isotonic sodium chloride solution.
  • sterile, fixed oils are conventionally employed as a solvent or suspending medium.
  • any bland fixed oil may be employed including synthetic mono- or di-glycerides.
  • fatty acids such as oleic acid find use in the preparation of injectables.
  • Suppositories for rectal administration of the drug can be prepared by mixing the drug with a suitable nonirritating excipient such as cocoa butter and polyethylene glycols, which are solid at ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum and release the drug.
  • a suitable nonirritating excipient such as cocoa butter and polyethylene glycols, which are solid at ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum and release the drug.
  • Solid dosage forms for oral administration may include capsules, tablets, pills, powders, and granules.
  • the active compound may be admixed with at least one inert diluent such as sucrose lactose or starch.
  • Such dosage forms may also comprise, as is normal practice, additional substances other than inert diluents, e.g., lubricating agents such as magnesium stearate.
  • the dosage forms may also comprise buffering agents. Tablets and pills can additionally be prepared with enteric coatings.
  • Liquid dosage forms for oral administration may include pharmaceutically acceptable emulsions, solutions, suspensions, syrups, and elixirs containing inert diluents commonly used in the art, such as water.
  • Such compositions may also comprise adjuvants, such as wetting agents, emulsifying and suspending agents, cyclodextrins, and sweetening, flavoring, and perfuming agents.
  • the compounds of the present invention can also be administered in the form of liposomes.
  • liposomes are generally derived from phospholipids or other lipid substances. Liposomes are formed by mono- or multi-lamellar hydrated liquid crystals that 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 the phospholipids and phosphatidyl cholines (lecithins), both natural and synthetic. 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.W., p. 33 et seq. (1976).
  • the compounds of the invention can be administered as the sole active pharmaceutical agent, they can also be used in combination with one or more other agents used in the treatment of cancer.
  • the compounds of the present invention are also useful in combination with known therapeutic agents and anti-cancer agents, and combinations of the presently disclosed compounds with other anti-cancer or chemotherapeutic agents are within the scope of the invention. Examples of such agents can be found in Cancer Principles and Practice of Oncology, V. T. Devita and S. Hellman (editors), 6 th edition (Feb. 15, 2001), Lippincott Williams & Wilkins Publishers. A person of ordinary skill in the art would be able to discern which combinations of agents would be useful based on the particular characteristics of the drugs and the cancer involved.
  • Such anti-cancer agents include, but are not limited to, the following: MEK inhibitors, estrogen receptor modulators, androgen receptor modulators, retinoid receptor modulators, cytotoxic/cytostatic agents, antiproliferative agents, prenyl-protein transferase inhibitors, HMG-CoA reductase inhibitors and other angiogenesis inhibitors, inhibitors of cell proliferation and survival signaling, apoptosis inducing agents and agents that interfere with cell cycle checkpoints.
  • the compounds of the invention are also useful when coadministered with radiation therapy.
  • the compounds of the invention are also used in combination with known therapeutic or anticancer agents including, for example, estrogen receptor modulators, androgen receptor modulators, retinoid receptor modulators, cytotoxic agents, antiproliferative agents, prenyl-protein transferase inhibitors, HMG-CoA reductase inhibitors, HIV protease inhibitors, reverse transcriptase inhibitors, and other angiogenesis inhibitors.
  • known therapeutic or anticancer agents including, for example, estrogen receptor modulators, androgen receptor modulators, retinoid receptor modulators, cytotoxic agents, antiproliferative agents, prenyl-protein transferase inhibitors, HMG-CoA reductase inhibitors, HIV protease inhibitors, reverse transcriptase inhibitors, and other angiogenesis inhibitors.
  • representative therapeutic agents useful in combination with the compounds of the invention for the treatment of cancer include, for example, MEK inhibitors, irinotecan, topotecan, gemcitabine, 5-fluorouracil, cytarabine, daunorubicin, PI3 Kinase inhibitors, mTOR inhibitors, DNA synthesis inhibitors, leucovorin carboplatin, cisplatin, taxanes, tezacitabine, cyclophosphamide, vinca alkaloids, imatinib (Gleevec), anthracyclines, rituximab, trastuzumab, Revlimid, Velcade, dexamethasone, daunorubicin, cytaribine, clofarabine, Mylotarg, lenalidomide, bortezomib, as well as other cancer
  • chemotherapeutic agents including targeted therapuetics.
  • the compounds of the invention and the other anticancer agents can be administered at the recommended maximum clinical dosage or at lower doses. Dosage levels of the active compounds in the compositions of the invention may be varied so as to obtain a desired therapeutic response depending on the route of administration, severity of the disease and the response of the patient.
  • the combination can be administered as separate compositions or as a single dosage form containing both agents.
  • the therapeutic agents can be formulated as separate compositions, which are given at the same time or different times, or the therapeutic agents, can be given as a single composition.
  • the invention provides a method of inhibiting Piml, Pim2 or Pim3 in a human or animal subject.
  • the method includes administering an effective amount of a compound, or a pharmaceutically acceptable salt thereof, of any of the embodiments of compounds of Formula I or II to a subject in need thereof.
  • the compounds of the invention can be obtained through procedures known to those skilled in the art. As shown in Scheme 1, synthetic methods to prepare aminosubstituted aminocyclohexenylpyridyl amides V are depicted. Methyl cyclohexanedione can be converted via the monotriflate to the corresponding cyclohexenoneboronate ester which can undergo palladium mediated carbon bond formation with 4-chloro, 3-nitro pyridine to yield nitropyridine substituted cyclohexenone I.
  • Ketone reduction followed by dehydration yields a cyclohexadiene which upon epoxidation (via bromohydrin formation and HBr elimination), azide epoxide opening, azide reduction and amine Boc protection yields cyclohexenyl Boc amino alcohol nitro pyridyl compound II.
  • the alcohol moiety of nitropyridyl II can be inverted via a mesylation, cyclization and Boc protection sequence to provide the all cis substituted cyclohexyl pyridyl aniline III, where the cis hydroxy is protected in the form of a cylic carbamate.
  • the compounds and/or intermediates were characterized by high performance liquid chromatography (HPLC) using a Waters Millenium chromatography system with a 2695 Separation Module (Milford, MA).
  • HPLC high performance liquid chromatography
  • the analytical columns were reversed phase Phenomenex Luna CI 8 -5 ⁇ , 4.6 x 50 mm, from Alltech (Deerfield, IL).
  • a gradient elution was used (flow 2.5 mL/min), typically starting with 5% acetonitrile/95% water and progressing to 100% acetonitrile over a period of 10 minutes. All solvents contained 0.1%) trif uoroacetic acid (TFA).
  • UV ultraviolet light
  • HPLC solvents were from Burdick and Jackson (Muskegan, MI), or Fisher Scientific (Pittsburgh, PA).
  • TLC thin layer chromatography
  • glass or plastic backed silica gel plates such as, for example, Baker-Flex Silica Gel 1B2-F flexible sheets.
  • TLC results were readily detected visually under ultraviolet light, or by employing well-known iodine vapor and other various staining techniques.
  • Mass spectrometric analysis was performed on one of three LCMS instruments: a Waters System (Alliance HT HPLC and a Micromass ZQ mass spectrometer; Column: Eclipse XDB-C18, 2.1 x 50 mm; gradient: 5-95% (or 35-95%, or 65-95% or 95-95%) acetonitrile in water with 0.05% TFA over a 4 min period; flow rate 0.8 mL/min; molecular weight range 200-1500; cone Voltage 20 V; column temperature 40°C), another Waters System (ACQUITY UPLC system and a ZQ 2000 system; Column: ACQUITY UPLC HSS-C18, 1.8um, 2.1 x 50mm; gradient: 5-95% (or 35-95%, or 65-95% or 95-95%) acetonitrile in water with 0.05% TFA over a 1.3 min period; flow rate 1.2 mL/min; molecular weight range 150-850; cone Voltage 20 V; column temperature 50°C) or
  • NMR Nuclear magnetic resonance
  • Preparative separations are carried out using a Flash 40 chromatography system and KP-Sil, 60A (Biotage, Charlottesville, VA), or by flash column chromatography using silica gel (230-400 mesh) packing material on ISCO or Analogix purification systems, or by HPLC using a Waters 2767 Sample Manager, C-18 reversed phase column, 30X50 mm, flow 75 mL/min.
  • Typical solvents employed for the Flash 40 Biotage, ISCO or Analogixsystem for silica gel column chromatography are dichloromethane, methanol, ethyl acetate, hexane, n-heptanes, acetone, aqueous ammonia (or ammonium hydroxide), and triethyl amine.
  • Typical solvents employed for the reverse phase HPLC are varying concentrations of acetonitrile and water with 0.1% trifluoroacetic acid.
  • organic compounds according to the preferred embodiments may exhibit the phenomenon of tautomerism.
  • chemical structures within this specification can only represent one of the possible tautomeric forms, it should be understood that the preferred embodiments encompasses any tautomeric form of the drawn structure.
  • the residue was partitioned between brine and ethyl acetate, and the layers were separated, the aqueous phase was further extracted with ethyl acetate (4x), the organics were combined, dried over sodium sulfate, filtered, and concentrated.
  • the crude was purified via silica gel chromatography loading in DCM and eluting with 2-50% ethyl acetate and hexanes. The pure fractions were concentrated in vacuo to yield an orange oil.
  • (+/-)-2-azido-6-methyl-4-(3-nitropyridin-4-yl)cyclohex-3-enol 1.0 equiv.
  • ammonium hydroxide 8:1 , 0.08 M
  • trimethylphosphine 3.0 equiv.
  • EtOH was added and the solution was concentrated in vacuo. More ethanol was added and the reaction was concentrated again.
  • Dioxane and sat. NaHC0 3 (1 : 1, 0.08 M) were added to the crude, followed by Boc 2 0 (1.0 equiv.).
  • (+/-)-tert-butyl ((lR,5S,6S)-6-hydroxy-5-methyl-3-(3- nitropyridin-4-yl)cyclohex-2-en-l-yl)carbamate 1.0 equiv.
  • MsCl 5.0 equiv.
  • the capped solution was stirred for 5 minutes and then the homogeneous solution was left standing at rt for 5 hrs.
  • the volatiles were removed in vacuo and the residue was partitioned between EtOAc and H 2 0.
  • the organic layer was washed with 10% CuS0 4 , H 2 0, Na 2 C0 3 ( sa t.), NaCl (sat .
  • (+/-)-(l S,2R,6S)-2-((tert-butoxycarbonyl)amino)-6-methyl-4-(3- nitropyridin-4-yl)cyclohex-3-en-l-yl methanesulfonate 1.0 equiv.
  • isopropanol 0.20 M
  • Pd/C 0.2 equiv.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 2-(2,6-difluoro-4-methylphenyl)-4,4,5,5-tetramethyl-l,3,2-dioxaboroane (1.75 equiv.) to give methyl 6-(2,6-difluoro-4-methylphenyl)-5-fluoropicolinate as a solid in 85% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and tert-butyl(3,5-difluoro-4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2- yl)phenoxy)dimethylsilane (1.75 equiv.) to give methyl 6-(2,6-difluoro-4- hydroxyphenyl)-5-fluoropicolinate in 65% yield.
  • the reaction was heated for an additional 30 minutes at 100 °C in the microwave to drive to completion the deprotection of the TBDMS group.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 2-(2,6-difluoro-4-(methylthio)phenyl)-4,4,5,5-tetramethyl-l,3,2-dioxaborolane (1.75 equiv.) to give methyl 6-(2,6-difluoro-4-(methylthio)phenyl)-5-fluoropicolinate in 73% yield.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (2.5 equiv.), butyllithium (2.4 equiv.) and 3-(3,5-difluorophenyl)oxetan-3- ol (1.0 equiv.) to give 3-(3,5-difluoro-4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2- yl)phenyl)oxetan-3-ol in 79% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 3-(3,5-difluoro-4-(4,4,5,5-tetramethyl-l ,3,2-dioxaborolan-2-yl)phenyl)oxetan-3-ol (1.4 equiv.) at 100 0 C for 20 min in microwave to give methyl 6-(2,6-difluoro-4-(3- hydroxyoxetan-3-yl)phenyl)-5-fluoropicolinate in 43% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and (2-(3,5-difluoro-4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)phenyl)propan-2- yloxy)triisopropylsilane (1.6 equiv.) at 100 °C for 30 min in the microwave to give methyl 6-(2,6-difluoro-4-(2-hydroxypropan-2-yl)phenyl)-5-fluoropicolinate in 90% yield.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (2.5 equiv.), butyllithium (2.4 equiv.) and 4-(3,5- difluorophenyl)tetrahydro-2H-pyran-4-ol (1.0 equiv.) to give 4-(3,5-difluoro-4-(4,4,5,5- tetramethyl-l,3,2-dioxaborolan-2-yl)phenyl)tetrahydro-2H-pyran-4-ol in 97% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 4-(3,5-difluoro-4-(4,4,5,5-tetramethyl-l ,3,2-dioxaborolan-2-yl)phenyl)tetrahydro-2H- pyran-4-ol (1.8 equiv.) at 100 °C for 20 min in microwave to give methyl 6-(2,6-difluoro- 4-(4-hydroxytetrahydro-2H-pyran-4-yl)phenyl)-5-fluoropicolinate.
  • reaction solution was quenched by addition of NH 4 Cl( sa t) and the solution was extracted with EtOAc, washed with NaCl (sa ) , dried over MgS0 4 , filtered, concentrated and purified by ISCO Si0 2 chromatography (0-100%) EtOAc/n-heptanes gradient) to yield l-(3,5-difluorophenyl)cyclobutanol in 54% yield.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (2.5 equiv.), butyllithium (2.4 equiv.) and l-(3,5- difluorophenyl)cyclobutanol (1.0 equiv.) to give l-(3,5-difluoro-4-(4,4,5,5-tetramethyl- l,3,2-dioxaborolan-2-yl)phenyl)cyclobutanol in 100% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 1 -(3 ,5-difluoro-4-(4,4,5 ,5-tetramethyl- 1 ,3 ,2-dioxaborolan-2-yl)phenyl)cyclobutanol (1.6 equiv.) at 100 °C for 30 min in microwave to give methyl 6-(2,6-difluoro-4-(l- hydroxycyclobutyl)phenyl)-5-fluoropicolinate in 71% yield.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (1.5 equiv.), butyllithium (1.3 equiv.) and 4-(3,5- difluorophenoxy)tetrahydro-2H-pyran (1.0 equiv.) to give 2-(2,6-difluoro-4-((tetrahydro- 2H-pyran-4-yl)oxy)phenyl)-4,4,5,5-tetramethyl-l,3,2-dioxaborolane in 33% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.0 equiv.) and 2-(2,6-difluoro-4-((tetrahydro-2H-pyran-4-yl)oxy)phenyl)-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (1.5 equiv.) at 100 °C for 30 min in microwave to give methyl 6-(2,6- difluoro-4-((tetrahydro-2H-pyran-4-yl)oxy)phenyl)-5-fluoropicolinate in 77 % yield.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (2.2 equiv.), butyllithium (1.2 equiv.) and l,3-difluoro-5- isopropoxybenzene (1.0 equiv.) to give 2-(2,6-difluoro-4-isopropoxyphenyl)-4,4,5,5- tetramethyl-l,3,2-dioxaborolane in 99% yield.
  • Method 1 was followed using methyl 6-bromo-5 -fluoropicolmate (0.8 equiv.) and 2-(2,6-difluoro-4-isopropoxyphenyl)-4,4,5,5-tetramethyl -1,3,2-dioxaborolane (1.0 equiv.) at 70 °C for 1 hour to give methyl 6-(2,6 -difiuoro-4-isopropoxyphenyl)-5- fiuoropicolinate.
  • Method 3 was followed using 2-isopropoxy-4,4,5,5-tetramethyl-l,3,2- dioxaborolane (1.3 equiv.), butyllithium (1.1 equiv.) and 3-(3,5-difluorophenyl)oxetane (1.0 equiv.) to give 2-(2,6-difluoro-4-(oxetan-3-yl)phenyl)-4,4,5,5-tetramethyl-l,3,2- dioxaborolane in 8% yield.
  • Method 1 was followed using methyl 6-bromo-5-fluoropicolinate (1.2 equiv.) and 2-(2,6-difluoro-4-(oxetan-3-yl)phenyl)-4,4,5,5-tetramethyl-l ,3,2-dioxaborolane (1.0 equiv.) at 80 °C for 15 min in microwave to give methyl 6-(2,6-difluoro-4-(oxetan-3- yl)phenyl)-5-fluoropicolinate in 47% yield.
  • the reaction was allowed to cool to room temperature, partitioned with ethyl acetate and water, the organic phase was dried with sodium sulfate, filtered, and concentrated.
  • the crude material was diluted in EtOH to 0.1 M, and 0.5 equiv. of NaBH 4 was added to reduce the dba.
  • the reaction was stirred for one hour at room temperature, then quenched with water and concentrated under vacuo to remove the ethanol.
  • the product was extracted in ether, washed with brine, the organics were dried over sodium sulfate, filtered, and concentrated.
  • the protected amide product Upon drying over MgS0 4 , filtering and removing the volatiles in vacuo, the protected amide product was obtained as a free base. Alternatively, the crude reaction mixture was used for the deprotection step without further purification. If an N-Boc protected amine was present, it was removed by treating with excess 4M HCl/ dioxane for 14 hours or by treating with 25% TFA/CH 2 C1 2 for 2 hours. Upon removal of the volatiles in vacuo, the material was purified by RP HPLC yielding after lyophilization the amide product as the TFA salt. Alternatively, the HPLC fractions could be added to EtOAc and solid Na 2 C0 3 , separated and washed with NaCl (sa ) .
  • TBDMS ether was present, it was deprotected prior to Boc removal by treating with 6N HCl, THF, methanol (1 :2: 1) at room temperature for 12 h. After removal of volatiles in vacuo, the Boc amino group was deprotected as described above.
  • the TBDMS ether and Boc group could be both deprotected with 6N HCl, THF, methanol (1 :2: 1) if left at rt for 24 hours, or heated at 60 °C for 3 hours.
  • Pim 1, Pim 2 & Pim 3 AlphaScreen assays using high ATP (11 - 125X ATP Km) were used to determine the biochemical activity of the inhibitors.
  • the activity of Pim 1, Pim 2, & Pim 3 is measured using a homogeneous bead based system quantifying the amount of phosphorylated peptide substrate resulting from kinase-catalyzed phosphoryl transfer to a peptide substrate.
  • Compounds to be tested are dissolved in 100% DMSO and directly distributed to a white 384-well plate at 0.25 ⁇ per well.
  • IC50 the half maximal inhibitory concentration
  • KMS 11 human myeloma cell line
  • IMDM IMDM supplemented with 10% FBS, sodium pyruvate and antibiotics.
  • Cells were plated in the same medium at a density of 2000 cells per well into 96 well tissue culture plates, with outside wells vacant, on the day of assay.
  • Test compounds supplied in DMSO were diluted into DMSO at 500 times the desired final concentrations before dilution into culture media to 2 times final concentrations. Equal volumes of 2x compounds were added to the cells in 96 well plates and incubated at 37 °C for 3 days.

Abstract

La présente invention concerne un composé représenté par la formule (I): (I) telle que décrite ici, et des sels pharmaceutiquement acceptables, des énantiomères, des rotamères, des tautomères, ou des racémates de ceux-ci. L'invention concerne également des méthodes pour traiter une maladie ou une affection médiée par PIM kinase au moyen des composés de Formule I, et des compositions pharmaceutiques comprenant ces composés.
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US9278950B2 (en) 2013-01-14 2016-03-08 Incyte Corporation Bicyclic aromatic carboxamide compounds useful as Pim kinase inhibitors
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