# Patent

## Title
Histone demethylase inhibitors

## Abstract

The present invention relates generally to compositions and methods for treating cancer and neoplastic diseases. Provided herein are substituted imidazole-pyridine derivative compounds and pharmaceutical compositions comprising said compounds. The subject compounds and compositions are useful for inhibition of histone demethylase enzymes. Furthermore, the subject compounds and compositions are useful for the treatment of cancer, such as prostate cancer, breast cancer, bladder cancer, lung cancer and/or melanoma and the like.

## Background
CROSS REFERENCE
This application claims the benefit of U.S. Provisional Application 61/783,563, filed Mar. 14, 2013, the content of which is hereby incorporated by reference in its entirety.


BACKGROUND
A need exists in the art for an effective treatment of cancer and neoplastic disease.
BRIEF SUMMARY OF THE INVENTION
Provided herein are substituted imidazole-pyridine derivative compounds and pharmaceutical compositions comprising said compounds. The subject compounds and compositions are useful for the inhibition of histone demethylase. Furthermore, the subject compounds and compositions are useful for the treatment of cancer, such as prostate cancer, breast cancer, bladder cancer, lung cancer and/or melanoma and the like. The substituted imidazole-pyridine derivative compounds described herein are based upon a substituted 2-(1H-imidazol-4-yl)pyridine ring system bearing at the 4-position of the pyridine ring a carboxylic acid, carboxylic acid ester, or bioisostere thereof, and additional substituents at the 1-, 2- and 5-position of the imidazole ring. The 1-position substituent, in various embodiments, is selected from a wide variety of groups, such as, but not limited to, alkyl, aryl, carbocyclyl, and the like.
One embodiment provides a compound of Formula (I), or a pharmaceutically acceptable salt thereof:




wherein,

    X is CH, Y is CH and Z is CH; or
    X is COH, Y is CH and Z is CH; or
    X is CH, Y is CH, and Z is N; or
    X is N, Y is CH, and Z is CH; or
    X is CH, Y is N, and Z is CH;
    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


Another embodiment provides the compound of Formula (I) having the structure of Formula (II), or a pharmaceutically acceptable salt thereof:




wherein,

    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound of Formula (I), or a pharmaceutically acceptable salt thereof, wherein the compound of Formula (I) has the structure:




wherein,

    X is CH, Y is CH and Z is CH; or
    X is COH, Y is CH and Z is CH; or
    X is CH, Y is CH, and Z is N; or
    X is N, Y is CH, and Z is CH; or
    X is CH, Y is N, and Z is CH;
    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


One embodiment provides a method for treating cancer in subject comprising administering a composition comprising a compound of Formula (I), or a pharmaceutically acceptable salt thereof, wherein the compound of Formula (I) has the structure:




wherein,

    X is CH, Y is CH and Z is CH; or
    X is COH, Y is CH and Z is CH; or
    X is CH, Y is CH, and Z is N; or
    X is N, Y is CH, and Z is CH; or
    X is CH, Y is N, and Z is CH;
    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


INCORPORATION BY REFERENCE
All publications, patents, and patent applications mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent, or patent application was specifically and individually indicated to be incorporated by reference.


DETAILED DESCRIPTION OF THE INVENTION
As used herein and in the appended claims, the singular forms “a,” “and,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “an agent” includes a plurality of such agents, and reference to “the cell” includes reference to one or more cells (or to a plurality of cells) and equivalents thereof known to those skilled in the art, and so forth. When ranges are used herein for physical properties, such as molecular weight, or chemical properties, such as chemical formulae, all combinations and subcombinations of ranges and specific embodiments therein are intended to be included. The term “about” when referring to a number or a numerical range means that the number or numerical range referred to is an approximation within experimental variability (or within statistical experimental error), and thus the number or numerical range may vary between 1% and 15% of the stated number or numerical range. The term “comprising” (and related terms such as “comprise” or “comprises” or “having” or “including”) is not intended to exclude that in other certain embodiments, for example, an embodiment of any composition of matter, composition, method, or process, or the like, described herein, may “consist of” or “consist essentially of” the described features.
DEFINITIONS
As used in the specification and appended claims, unless specified to the contrary, the following terms have the meaning indicated below.
“Amino” refers to the —NH2 radical.
“Cyano” refers to the —CN radical.
“Nitro” refers to the —NO2 radical.
“Oxa” refers to the —O— radical.
“Oxo” refers to the ═O radical.
“Thioxo” refers to the ═S radical.
“Imino” refers to the ═N—H radical.
“Oximo” refers to the ═N—OH radical.
“Hydrazino” refers to the ═N—NH2 radical.
“Alkyl” refers to a straight or branched hydrocarbon chain radical consisting solely of carbon and hydrogen atoms, containing no unsaturation, having from one to fifteen carbon atoms (e.g., C1-C15 alkyl). In certain embodiments, an alkyl comprises one to thirteen carbon atoms (e.g., C1-C13 alkyl). In certain embodiments, an alkyl comprises one to eight carbon atoms (e.g., C1-C8 alkyl). In other embodiments, an alkyl comprises one to five carbon atoms (e.g., C1-C5 alkyl). In other embodiments, an alkyl comprises one to four carbon atoms (e.g., C1-C4 alkyl). In other embodiments, an alkyl comprises one to three carbon atoms (e.g., C1-C3 alkyl). In other embodiments, an alkyl comprises one to two carbon atoms (e.g., C1-C2 alkyl). In other embodiments, an alkyl comprises one carbon atom (e.g., C1 alkyl). In other embodiments, an alkyl comprises five to fifteen carbon atoms (e.g., C5-C15 alkyl). In other embodiments, an alkyl comprises five to eight carbon atoms (e.g., C5-C8 alkyl). In other embodiments, an alkyl comprises two to five carbon atoms (e.g., C2-C5 alkyl). In other embodiments, an alkyl comprises three to five carbon atoms (e.g., C3-C5 alkyl). In other embodiments, the alkyl group is selected from methyl, ethyl, 1-propyl (n-propyl), 1-methylethyl (iso-propyl), 1-butyl (n-butyl), 1-methylpropyl (sec-butyl), 2-methylpropyl (iso-butyl), 1,1-dimethylethyl (tert-butyl), 1-pentyl (n-pentyl). The alkyl is attached to the rest of the molecule by a single bond. Unless stated otherwise specifically in the specification, an alkyl group is optionally substituted by one or more of the following substituents: halo, cyano, nitro, oxo, thioxo, imino, oximo, trimethylsilanyl, —ORa, —SRa, —OC(O)—Ra, —N(Ra)2, —C(O)Ra, —C(O)ORa, —C(O)N(Ra)2, —N(Ra)C(O)ORa, —OC(O)—N(Ra)2, —N(Ra)C(O)Ra, —N(Ra)S(O)tRa (where t is 1 or 2), —S(O)tORa (where t is 1 or 2), —S(O)tRa (where t is 1 or 2) and —S(O)tN(Ra)2 (where t is 1 or 2) where each Ra is independently hydrogen, alkyl, fluoroalkyl, carbocyclyl, carbocyclylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl.
“Alkoxy” refers to a radical bonded through an oxygen atom of the formula —O-alkyl, where alkyl is an alkyl chain as defined above.
“Alkenyl” refers to a straight or branched hydrocarbon chain radical group consisting solely of carbon and hydrogen atoms, containing at least one carbon-carbon double bond, and having from two to twelve carbon atoms. In certain embodiments, an alkenyl comprises two to eight carbon atoms. In other embodiments, an alkenyl comprises two to four carbon atoms. The alkenyl is attached to the rest of the molecule by a single bond, for example, ethenyl (i.e., vinyl), prop-1-enyl (i.e., allyl), but-1-enyl, pent-1-enyl, penta-1,4-dienyl, and the like. Unless stated otherwise specifically in the specification, an alkenyl group is optionally substituted by one or more of the following substituents: halo, cyano, nitro, oxo, thioxo, imino, oximo, trimethylsilanyl, —ORa, —SRa, —OC(O)—Ra, —N(Ra)2, —C(O)Ra, —C(O)ORa, —C(O)N(Ra)2, —N(Ra)C(O)ORa, —OC(O)—N(Ra)2, —N(Ra)C(O)Ra, —N(Ra)S(O)tRa (where t is 1 or 2), —S(O)tORa (where t is 1 or 2), —S(O)tRa (where t is 1 or 2) and —S(O)tN(Ra)2 (where t is 1 or 2) where each Ra is independently hydrogen, alkyl, fluoroalkyl, carbocyclyl, carbocyclylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl.
“Alkynyl” refers to a straight or branched hydrocarbon chain radical group consisting solely of carbon and hydrogen atoms, containing at least one carbon-carbon triple bond, having from two to twelve carbon atoms. In certain embodiments, an alkynyl comprises two to eight carbon atoms. In other embodiments, an alkynyl has two to four carbon atoms. The alkynyl is attached to the rest of the molecule by a single bond, for example, ethynyl, propynyl, butynyl, pentynyl, hexynyl, and the like. Unless stated otherwise specifically in the specification, an alkynyl group is optionally substituted by one or more of the following substituents: halo, cyano, nitro, oxo, thioxo, imino, oximo, trimethylsilanyl, —ORa, —SRa, —OC(O)—Ra, —N(Ra)2, —C(O)Ra, —C(O)ORa, —C(O)N(Ra)2, —N(Ra)C(O)ORa, —OC(O)—N(Ra)2, —N(Ra)C(O)Ra, —N(Ra)S(O)tRa (where t is 1 or 2), —S(O)tORa (where t is 1 or 2), —S(O)tRa (where t is 1 or 2) and —S(O)tN(Ra)2 (where t is 1 or 2) where each Ra is independently hydrogen, alkyl, fluoroalkyl, carbocyclyl, carbocyclylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl.
“Alkylene” or “alkylene chain” refers to a straight or branched divalent hydrocarbon chain linking the rest of the molecule to a radical group, consisting solely of carbon and hydrogen, containing no unsaturation and having from one to twelve carbon atoms, for example, methylene, ethylene, propylene, n-butylene, and the like. The alkylene chain is attached to the rest of the molecule through a single bond and to the radical group through a single bond. The points of attachment of the alkylene chain to the rest of the molecule and to the radical group can be through one carbon in the alkylene chain or through any two carbons within the chain. In certain embodiments, an alkylene comprises one to eight carbon atoms (e.g., C1-C8 alkylene). In other embodiments, an alkylene comprises one to five carbon atoms (e.g., C1-C5 alkylene). In other embodiments, an alkylene comprises one to four carbon atoms (e.g., C1-C4 alkylene). In other embodiments, an alkylene comprises one to three carbon atoms (e.g., C1-C3 alkylene). In other embodiments, an alkylene comprises one to two carbon atoms (e.g., C1-C2 alkylene). In other embodiments, an alkylene comprises one carbon atom (e.g., C1 alkylene). In other embodiments, an alkylene comprises five to eight carbon atoms (e.g., C5-C8 alkylene). In other embodiments, an alkylene comprises two to five carbon atoms (e.g., C2-C5 alkylene). In other embodiments, an alkylene comprises three to five carbon atoms (e.g., C3-C5 alkylene). Unless stated otherwise specifically in the specification, an alkylene chain is optionally substituted by one or more of the following substituents: halo, cyano, nitro, oxo, thioxo, imino, oximo, trimethylsilanyl, —ORa, —SRa, —OC(O)—Ra, —N(Ra)2, —C(O)Ra, —C(O)ORa, —C(O)N(Ra)2, —N(Ra)C(O)ORa, —OC(O)—N(Ra)2, —N(Ra)C(O)Ra, —N(Ra)S(O)tRa (where t is 1 or 2), —S(O)tORa (where t is 1 or 2), —S(O)tRa (where t is 1 or 2) and —S(O)tN(Ra)2 (where t is 1 or 2) where each Ra is independently hydrogen, alkyl, fluoroalkyl, carbocyclyl, carbocyclylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl.
“Aryl” refers to a radical derived from an aromatic monocyclic or multicyclic hydrocarbon ring system by removing a hydrogen atom from a ring carbon atom. The aromatic monocyclic or multicyclic hydrocarbon ring system contains only hydrogen and carbon from five to eighteen carbon atoms, where at least one of the rings in the ring system is fully unsaturated, i.e., it contains a cyclic, delocalized (4n+2) π-electron system in accordance with the Hückel theory. The ring system from which aryl groups are derived include, but are not limited to, groups such as benzene, fluorene, indane, indene, tetralin and naphthalene. Unless stated otherwise specifically in the specification, the term “aryl” or the prefix “ar-” (such as in “aralkyl”) is meant to include aryl radicals optionally substituted by one or more substituents independently selected from alkyl, alkenyl, alkynyl, halo, fluoroalkyl, cyano, nitro, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl, optionally substituted aralkynyl, optionally substituted carbocyclyl, optionally substituted carbocyclylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted heteroaryl, optionally substituted heteroarylalkyl, —Rb—ORa, —Rb—OC(O)—Ra, —Rb—OC(O)—ORa, —Rb—OC(O)—N(Ra)2, —Rb—N(Ra)2, —Rb—C(O)Ra, —Rb—C(O)ORa, —Rb—C(O)N(Ra)2, —Rb—O—Rc—C(O)N(Ra)2, —Rb—N(Ra)C(O)ORa, —Rb—N(Ra)C(O)Ra, —Rb—N(Ra)S(O)tRa (where t is 1 or 2), —Rb—S(O)tORa (where t is 1 or 2), —Rb—S(O)tRa (where t is 1 or 2) and —Rb—S(O)tN(Ra)2 (where t is 1 or 2), where each Ra is independently hydrogen, alkyl, fluoroalkyl, cycloalkyl, cycloalkylalkyl, aryl (optionally substituted with one or more halo groups), aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl, each Rb is independently a direct bond or a straight or branched alkylene or alkenylene chain, and Rc is a straight or branched alkylene or alkenylene chain, and where each of the above substituents is unsubstituted unless otherwise indicated.
“Aralkyl” refers to a radical of the formula —Rc-aryl where Rc is an alkylene chain as defined above, for example, methylene, ethylene, and the like. The alkylene chain part of the aralkyl radical is optionally substituted as described above for an alkylene chain. The aryl part of the aralkyl radical is optionally substituted as described above for an aryl group.
“Aralkenyl” refers to a radical of the formula —Rd-aryl where Rd is an alkenylene chain as defined above. The aryl part of the aralkenyl radical is optionally substituted as described above for an aryl group. The alkenylene chain part of the aralkenyl radical is optionally substituted as defined above for an alkenylene group.
“Aralkynyl” refers to a radical of the formula —Re-aryl, where Re is an alkynylene chain as defined above. The aryl part of the aralkynyl radical is optionally substituted as described above for an aryl group. The alkynylene chain part of the aralkynyl radical is optionally substituted as defined above for an alkynylene chain.
“Aralkoxy” refers to a radical bonded through an oxygen atom of the formula —O—Rc-aryl where Rc is an alkylene chain as defined above, for example, methylene, ethylene, and the like. The alkylene chain part of the aralkyl radical is optionally substituted as described above for an alkylene chain. The aryl part of the aralkyl radical is optionally substituted as described above for an aryl group.
“Carbocyclyl” refers to a stable non-aromatic monocyclic or polycyclic hydrocarbon radical consisting solely of carbon and hydrogen atoms, which may include fused or bridged ring systems, having from three to fifteen carbon atoms. In certain embodiments, a carbocyclyl comprises three to ten carbon atoms. In other embodiments, a carbocyclyl comprises five to seven carbon atoms. The carbocyclyl is attached to the rest of the molecule by a single bond. Carbocyclyl may be saturated, (i.e., containing single C—C bonds only) or unsaturated (i.e., containing one or more double bonds or triple bonds.) A fully saturated carbocyclyl radical is also referred to as “cycloalkyl.” Examples of monocyclic cycloalkyls include, e.g., cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl. An unsaturated carbocyclyl is also referred to as “cycloalkenyl.” Examples of monocyclic cycloalkenyls include, e.g., cyclopentenyl, cyclohexenyl, cycloheptenyl, and cyclooctenyl. Polycyclic carbocyclyl radicals include, for example, adamantyl, norbornyl (i.e., bicyclo[2.2.1]heptanyl), norbornenyl, decalinyl, 7,7-dimethyl-bicyclo[2.2.1]heptanyl, and the like. Unless otherwise stated specifically in the specification, the term “carbocyclyl” is meant to include carbocyclyl radicals that are optionally substituted by one or more substituents independently selected from alkyl, alkenyl, alkynyl, halo, fluoroalkyl, oxo, thioxo, cyano, nitro, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl, optionally substituted aralkynyl, optionally substituted carbocyclyl, optionally substituted carbocyclylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted heteroaryl, optionally substituted heteroarylalkyl, —Rb—ORa, —Rb—OC(O)—Ra, —Rb—OC(O)—ORa, —Rb—OC(O)—N(Ra)2, —Rb—N(Ra)2, —Rb—C(O)Ra, —Rb—C(O)ORa, —Rb—C(O)N(Ra)2, —Rb—O—Rc—C(O)N(Ra)2, —Rb—N(Ra)C(O)ORa, —Rb—N(Ra)C(O)Ra, —Rb—N(Ra)S(O)tRa (where t is 1 or 2), —Rb—S(O)tORa (where t is 1 or 2), —Rb—S(O)tRa (where t is 1 or 2) and —Rb—S(O)tN(Ra)2 (where t is 1 or 2), where each Ra is independently hydrogen, alkyl, fluoroalkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl, each Rb is independently a direct bond or a straight or branched alkylene or alkenylene chain, and Rc is a straight or branched alkylene or alkenylene chain, and where each of the above substituents is unsubstituted unless otherwise indicated.
“Carbocyclylalkyl” refers to a radical of the formula —Rc-carbocyclyl where Rc is an alkylene chain as defined above. The alkylene chain and the carbocyclyl radical is optionally substituted as defined above.
“Carbocyclylalkoxy” refers to a radical bonded through an oxygen atom of the formula —O—Rc-carbocyclyl where Rc is an alkylene chain as defined above. The alkylene chain and the carbocyclyl radical is optionally substituted as defined above.
As used herein, “carboxylic acid bioisostere” refers to a functional group or moiety that exhibits similar physical, biological and/or chemical properties as a carboxylic acid moiety. Examples of carboxylic acid bioisosteres include, but are not limited to,




and the like.

“Halo” or “halogen” refers to bromo, chloro, fluoro or iodo substituents.
“Fluoroalkyl” refers to an alkyl radical, as defined above, that is substituted by one or more fluoro radicals, as defined above, for example, trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 1-fluoromethyl-2-fluoroethyl, and the like. The alkyl part of the fluoroalkyl radical may be optionally substituted as defined above for an alkyl group.
“Heterocyclyl” refers to a stable 3- to 18-membered non-aromatic ring radical that comprises two to twelve carbon atoms and from one to six heteroatoms selected from nitrogen, oxygen and sulfur. Unless stated otherwise specifically in the specification, the heterocyclyl radical is a monocyclic, bicyclic, tricyclic or tetracyclic ring system, which may include fused or bridged ring systems. The heteroatoms in the heterocyclyl radical may be optionally oxidized. One or more nitrogen atoms, if present, are optionally quaternized. The heterocyclyl radical is partially or fully saturated. The heterocyclyl may be attached to the rest of the molecule through any atom of the ring(s). Examples of such heterocyclyl radicals include, but are not limited to, dioxolanyl, thienyl[1,3]dithianyl, decahydroisoquinolyl, imidazolinyl, imidazolidinyl, isothiazolidinyl, isoxazolidinyl, morpholinyl, octahydroindolyl, octahydroisoindolyl, 2-oxopiperazinyl, 2-oxopiperidinyl, 2-oxopyrrolidinyl, oxazolidinyl, piperidinyl, piperazinyl, 4-piperidonyl, pyrrolidinyl, pyrazolidinyl, quinuclidinyl, thiazolidinyl, tetrahydrofuryl, trithianyl, tetrahydropyranyl, thiomorpholinyl, thiamorpholinyl, 1-oxo-thiomorpholinyl, and 1,1-dioxo-thiomorpholinyl. Unless stated otherwise specifically in the specification, the term “heterocyclyl” is meant to include heterocyclyl radicals as defined above that are optionally substituted by one or more substituents selected from alkyl, alkenyl, alkynyl, halo, fluoroalkyl, oxo, thioxo, cyano, nitro, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl, optionally substituted aralkynyl, optionally substituted carbocyclyl, optionally substituted carbocyclylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted heteroaryl, optionally substituted heteroarylalkyl, —Rb—ORa, —Rb—OC(O)—Ra, —Rb—OC(O)—ORa, —Rb—OC(O)—N(Ra)2, —Rb—N(Ra)2, —Rb—C(O)Ra, —Rb—C(O)ORa, —Rb—C(O)N(Ra)2, —Rb—O—Rc—C(O)N(Ra)2, —Rb—N(Ra)C(O)ORa, —Rb—N(Ra)C(O)Ra, —Rb—N(Ra)S(O)tRa (where t is 1 or 2), —Rb—S(O)tORa (where t is 1 or 2), —Rb—S(O)tRa (where t is 1 or 2) and —Rb—S(O)tN(Ra)2 (where t is 1 or 2), where each Ra is independently hydrogen, alkyl, fluoroalkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl, each Rb is independently a direct bond or a straight or branched alkylene or alkenylene chain, and Rc is a straight or branched alkylene or alkenylene chain, and where each of the above substituents is unsubstituted unless otherwise indicated.
“N-heterocyclyl” or “N-attached heterocyclyl” refers to a heterocyclyl radical as defined above containing at least one nitrogen and where the point of attachment of the heterocyclyl radical to the rest of the molecule is through a nitrogen atom in the heterocyclyl radical. An N-heterocyclyl radical is optionally substituted as described above for heterocyclyl radicals. Examples of such N-heterocyclyl radicals include, but are not limited to, 1-morpholinyl, 1-piperidinyl, 1-piperazinyl, 1-pyrrolidinyl, pyrazolidinyl, imidazolinyl, and imidazolidinyl.
“C-heterocyclyl” or “C-attached heterocyclyl” refers to a heterocyclyl radical as defined above containing at least one heteroatom and where the point of attachment of the heterocyclyl radical to the rest of the molecule is through a carbon atom in the heterocyclyl radical. A C-heterocyclyl radical is optionally substituted as described above for heterocyclyl radicals. Examples of such C-heterocyclyl radicals include, but are not limited to, 2-morpholinyl, 2- or 3- or 4-piperidinyl, 2-piperazinyl, 2- or 3-pyrrolidinyl, and the like.
“Heterocyclylalkyl” refers to a radical of the formula —Rc-heterocyclyl where Rc is an alkylene chain as defined above. If the heterocyclyl is a nitrogen-containing heterocyclyl, the heterocyclyl is optionally attached to the alkyl radical at the nitrogen atom. The alkylene chain of the heterocyclylalkyl radical is optionally substituted as defined above for an alkylene chain. The heterocyclyl part of the heterocyclylalkyl radical is optionally substituted as defined above for a heterocyclyl group.
“Heterocyclylalkoxy” refers to a radical bonded through an oxygen atom of the formula —O—Rc-heterocyclyl where Rc is an alkylene chain as defined above. If the heterocyclyl is a nitrogen-containing heterocyclyl, the heterocyclyl is optionally attached to the alkyl radical at the nitrogen atom. The alkylene chain of the heterocyclylalkoxy radical is optionally substituted as defined above for an alkylene chain. The heterocyclyl part of the heterocyclylalkoxy radical is optionally substituted as defined above for a heterocyclyl group.
“Heteroaryl” refers to a radical derived from a 3- to 18-membered aromatic ring radical that comprises two to seventeen carbon atoms and from one to six heteroatoms selected from nitrogen, oxygen and sulfur. As used herein, the heteroaryl radical may be a monocyclic, bicyclic, tricyclic or tetracyclic ring system, wherein at least one of the rings in the ring system is fully unsaturated, i.e., it contains a cyclic, delocalized (4n+2) π-electron system in accordance with the Hückel theory. Heteroaryl includes fused or bridged ring systems. The heteroatom(s) in the heteroaryl radical is optionally oxidized. One or more nitrogen atoms, if present, are optionally quaternized. The heteroaryl is attached to the rest of the molecule through any atom of the ring(s). Examples of heteroaryls include, but are not limited to, azepinyl, acridinyl, benzimidazolyl, benzindolyl, 1,3-benzodioxolyl, benzofuranyl, benzooxazolyl, benzo[d]thiazolyl, benzothiadiazolyl, benzo[b][1,4]dioxepinyl, benzo[b][1,4]oxazinyl, 1,4-benzodioxanyl, benzonaphthofuranyl, benzoxazolyl, benzodioxolyl, benzodioxinyl, benzopyranyl, benzopyranonyl, benzofuranyl, benzofuranonyl, benzothienyl (benzothiophenyl), benzothieno[3,2-d]pyrimidinyl, benzotriazolyl, benzo[4,6]imidazo[1,2-a]pyridinyl, carbazolyl, cinnolinyl, cyclopenta[d]pyrimidinyl, 6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidinyl, 5,6-dihydrobenzo[h]quinazolinyl, 5,6-dihydrobenzo[h]cinnolinyl, 6,7-dihydro-5H-benzo[6,7]cyclohepta[1,2-c]pyridazinyl, dibenzofuranyl, dibenzothiophenyl, furanyl, furanonyl, furo[3,2-c]pyridinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyrimidinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridazinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridinyl, isothiazolyl, imidazolyl, indazolyl, indolyl, indazolyl, isoindolyl, indolinyl, isoindolinyl, isoquinolyl, indolizinyl, isoxazolyl, 5,8-methano-5,6,7,8-tetrahydroquinazolinyl, naphthyridinyl, 1,6-naphthyridinonyl, oxadiazolyl, 2-oxoazepinyl, oxazolyl, oxiranyl, 5,6,6a,7,8,9,10,10a-octahydrobenzo[h]quinazolinyl, 1-phenyl-1H-pyrrolyl, phenazinyl, phenothiazinyl, phenoxazinyl, phthalazinyl, pteridinyl, purinyl, pyrrolyl, pyrazolyl, pyrazolo[3,4-d]pyrimidinyl, pyridinyl, pyrido[3,2-d]pyrimidinyl, pyrido[3,4-d]pyrimidinyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, quinazolinyl, quinoxalinyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, 5,6,7,8-tetrahydroquinazolinyl, 5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidinyl, 6,7,8,9-tetrahydro-5H-cyclohepta[4,5]thieno[2,3-d]pyrimidinyl, 5,6,7,8-tetrahydropyrido[4,5-c]pyridazinyl, thiazolyl, thiadiazolyl, triazolyl, tetrazolyl, triazinyl, thieno[2,3-d]pyrimidinyl, thieno[3,2-d]pyrimidinyl, thieno[2,3-c]pridinyl, and thiophenyl (i.e. thienyl). Unless stated otherwise specifically in the specification, the term “heteroaryl” is meant to include heteroaryl radicals as defined above which are optionally substituted by one or more substituents selected from alkyl, alkenyl, alkynyl, halo, fluoroalkyl, haloalkenyl, haloalkynyl, oxo, thioxo, cyano, nitro, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl, optionally substituted aralkynyl, optionally substituted carbocyclyl, optionally substituted carbocyclylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted heteroaryl, optionally substituted heteroarylalkyl, —Rb—ORa, —Rb—OC(O)—Ra, —Rb—OC(O)—ORa, —Rb—OC(O)—N(Ra)2, —Rb—N(Ra)2, —Rb—C(O)Ra, —Rb—C(O)ORa, —Rb—C(O)N(Ra)2, —Rb—O—Rc—C(O)N(Ra)2, —Rb—N(Ra)C(O)ORa, —Rb—N(Ra)C(O)Ra, —Rb—N(Ra)S(O)tRa (where t is 1 or 2), —Rb—S(O)tORa (where t is 1 or 2), —Rb—S(O)tRa (where t is 1 or 2) and —Rb—S(O)tN(Ra)2 (where t is 1 or 2), where each Ra is independently hydrogen, alkyl, fluoroalkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, heterocyclyl, heterocyclylalkyl, heteroaryl or heteroarylalkyl, each Rb is independently a direct bond or a straight or branched alkylene or alkenylene chain, and Rc is a straight or branched alkylene or alkenylene chain, and where each of the above substituents is unsubstituted unless otherwise indicated.
“N-heteroaryl” refers to a heteroaryl radical as defined above containing at least one nitrogen and where the point of attachment of the heteroaryl radical to the rest of the molecule is through a nitrogen atom in the heteroaryl radical. An N-heteroaryl radical is optionally substituted as described above for heteroaryl radicals.
“C-heteroaryl” refers to a heteroaryl radical as defined above and where the point of attachment of the heteroaryl radical to the rest of the molecule is through a carbon atom in the heteroaryl radical. A C-heteroaryl radical is optionally substituted as described above for heteroaryl radicals.
“Heteroarylalkyl” refers to a radical of the formula —Rc-heteroaryl, where Rc is an alkylene chain as defined above. If the heteroaryl is a nitrogen-containing heteroaryl, the heteroaryl is optionally attached to the alkyl radical at the nitrogen atom. The alkylene chain of the heteroarylalkyl radical is optionally substituted as defined above for an alkylene chain. The heteroaryl part of the heteroarylalkyl radical is optionally substituted as defined above for a heteroaryl group.
“Heteroarylalkoxy” refers to a radical bonded through an oxygen atom of the formula —O—Rc-heteroaryl, where Rc is an alkylene chain as defined above. If the heteroaryl is a nitrogen-containing heteroaryl, the heteroaryl is optionally attached to the alkyl radical at the nitrogen atom. The alkylene chain of the heteroarylalkoxy radical is optionally substituted as defined above for an alkylene chain. The heteroaryl part of the heteroarylalkoxy radical is optionally substituted as defined above for a heteroaryl group.
The compounds disclosed herein may contain one or more asymmetric centers and may thus give rise to enantiomers, diastereomers, and other stereoisomeric forms that may be defined, in terms of absolute stereochemistry, as (R)— or (S)—. Unless stated otherwise, it is intended that all stereoisomeric forms of the compounds disclosed herein are contemplated by this disclosure. When the compounds described herein contain alkene double bonds, and unless specified otherwise, it is intended that this disclosure includes both E and Z geometric isomers (e.g., cis or trans.) Likewise, all possible isomers, as well as their racemic and optically pure forms, and all tautomeric forms are also intended to be included. The term “geometric isomer” refers to E or Z geometric isomers (e.g., cis or trans) of an alkene double bond. The term “positional isomer” refers to structural isomers around a central ring, such as ortho-, meta-, and para-isomers around a benzene ring.
A “tautomer” refers to a molecule wherein a proton shift from one atom of a molecule to another atom of the same molecule is possible. The compounds presented herein may, in certain embodiments, exist as tautomers. In circumstances where tautomerization is possible, a chemical equilibrium of the tautomers will exist. The exact ratio of the tautomers depends on several factors, including physical state, temperature, solvent, and pH. Some examples of tautomeric equilibrium include:




“Optional” or “optionally” means that a subsequently described event or circumstance may or may not occur and that the description includes instances when the event or circumstance occurs and instances in which it does not. For example, “optionally substituted aryl” means that the aryl radical may or may not be substituted and that the description includes both substituted aryl radicals and aryl radicals having no substitution.
“Pharmaceutically acceptable salt” includes both acid and base addition salts. A pharmaceutically acceptable salt of any one of the substituted imidazole-pyridine derivative compounds described herein is intended to encompass any and all pharmaceutically suitable salt forms. Preferred pharmaceutically acceptable salts of the compounds described herein are pharmaceutically acceptable acid addition salts and pharmaceutically acceptable base addition salts.
“Pharmaceutically acceptable acid addition salt” refers to those salts which retain the biological effectiveness and properties of the free bases, which are not biologically or otherwise undesirable, and which are formed with inorganic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, hydroiodic acid, hydrofluoric acid, phosphorous acid, and the like. Also included are salts that are formed with organic acids such as aliphatic mono- and dicarboxylic acids, phenyl-substituted alkanoic acids, hydroxy alkanoic acids, alkanedioic acids, aromatic acids, aliphatic and. aromatic sulfonic acids, etc. and include, for example, acetic acid, trifluoroacetic acid, propionic acid, glycolic acid, pyruvic acid, oxalic acid, maleic acid, malonic acid, succinic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, p-toluenesulfonic acid, salicylic acid, and the like. Exemplary salts thus include sulfates, pyrosulfates, bisulfates, sulfites, bisulfites, nitrates, phosphates, monohydrogenphosphates, dihydrogenphosphates, metaphosphates, pyrophosphates, chlorides, bromides, iodides, acetates, trifluoroacetates, propionates, caprylates, isobutyrates, oxalates, malonates, succinate suberates, sebacates, fumarates, maleates, mandelates, benzoates, chlorobenzoates, methylbenzoates, dinitrobenzoates, phthalates, benzenesulfonates, toluenesulfonates, phenylacetates, citrates, lactates, malates, tartrates, methanesulfonates, and the like. Also contemplated are salts of amino acids, such as arginates, gluconates, and galacturonates (see, for example, Berge S. M. et al., “Pharmaceutical Salts,” Journal of Pharmaceutical Science, 66:1-19 (1997), which is hereby incorporated by reference in its entirety). Acid addition salts of basic compounds may be prepared by contacting the free base forms with a sufficient amount of the desired acid to produce the salt according to methods and techniques with which a skilled artisan is familiar.
“Pharmaceutically acceptable base addition salt” refers to those salts that retain the biological effectiveness and properties of the free acids, which are not biologically or otherwise undesirable. These salts are prepared from addition of an inorganic base or an organic base to the free acid. Pharmaceutically acceptable base addition salts may be formed with metals or amines, such as alkali and alkaline earth metals or organic amines. Salts derived from inorganic bases include, but are not limited to, sodium, potassium, lithium, ammonium, calcium, magnesium, iron, zinc, copper, manganese, aluminum salts and the like. Salts derived from organic bases include, but are not limited to, salts of primary, secondary, and tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines and basic ion exchange resins, for example, isopropylamine, trimethylamine, diethylamine, triethylamine, tripropylamine, ethanolamine, diethanolamine, 2-dimethylaminoethanol, 2-diethylaminoethanol, dicyclohexylamine, lysine, arginine, histidine, caffeine, procaine, N,N-dibenzylethylenediamine, chloroprocaine, hydrabamine, choline, betaine, ethylenediamine, ethylenedianiline, N-methylglucamine, glucosamine, methylglucamine, theobromine, purines, piperazine, piperidine, N-ethylpiperidine, polyamine resins and the like. See Berge et al., supra.
As used herein, “treatment” or “treating,” or “palliating” or “ameliorating” are used interchangeably herein. These terms refers to an approach for obtaining beneficial or desired results including but not limited to therapeutic benefit and/or a prophylactic benefit. By “therapeutic benefit” is meant eradication or amelioration of the underlying disorder being treated. Also, a therapeutic benefit is achieved with the eradication or amelioration of one or more of the physiological symptoms associated with the underlying disorder such that an improvement is observed in the patient, notwithstanding that the patient may still be afflicted with the underlying disorder. For prophylactic benefit, the compositions may be administered to a patient at risk of developing a particular disease, or to a patient reporting one or more of the physiological symptoms of a disease, even though a diagnosis of this disease may not have been made.
“Prodrug” is meant to indicate a compound that may be converted under physiological conditions or by solvolysis to a biologically active compound described herein. Thus, the term “prodrug” refers to a precursor of a biologically active compound that is pharmaceutically acceptable. A prodrug may be inactive when administered to a subject, but is converted in vivo to an active compound, for example, by hydrolysis. The prodrug compound often offers advantages of solubility, tissue compatibility or delayed release in a mammalian organism (see, e.g., Bundgard, H., Design of Prodrugs (1985), pp. 7-9, 21-24 (Elsevier, Amsterdam).
A discussion of prodrugs is provided in Higuchi, T., et al., “Pro-drugs as Novel Delivery Systems,” A.C.S. Symposium Series, Vol. 14, and in Bioreversible Carriers in Drug Design, ed. Edward B. Roche, American Pharmaceutical Association and Pergamon Press, 1987, both of which are incorporated in full by reference herein.
The term “prodrug” is also meant to include any covalently bonded carriers, which release the active compound in vivo when such prodrug is administered to a mammalian subject. Prodrugs of an active compound, as described herein, may be prepared by modifying functional groups present in the active compound in such a way that the modifications are cleaved, either in routine manipulation or in vivo, to the parent active compound. Prodrugs include compounds wherein a hydroxy, amino or mercapto group is bonded to any group that, when the prodrug of the active compound is administered to a mammalian subject, cleaves to form a free hydroxy, free amino or free mercapto group, respectively. Examples of prodrugs include, but are not limited to, acetate, formate and benzoate derivatives of alcohol or amine functional groups in the active compounds and the like.
Substituted Imidazole-Pyridine Derivative Compounds
Substituted imidazole-pyridine derivative compounds are described herein that inhibit a histone demethylase enzyme. These compounds, and compositions comprising these compounds, are useful for the treatment of cancer and neoplastic diseases. The compounds described herein may, therefore, be useful for treating prostate cancer, breast cancer, bladder cancer, lung cancer and/or melanoma and the like.
One embodiment provides a compound of Formula (I), or a pharmaceutically acceptable salt thereof:




wherein,

    X is CH, Y is CH and Z is CH; or
    X is COH, Y is CH and Z is CH; or
    X is CH, Y is CH, and Z is N; or
    X is N, Y is CH, and Z is CH; or
    X is CH, Y is N, and Z is CH;
    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


Another embodiment provides the compound of Formula (I), wherein X is COH, Y is CH and Z is CH. Another embodiment provides the compound of Formula (I), wherein X is CH, Y is CH, and Z is N. Another embodiment provides the compound of Formula (I), wherein X is N, Y is CH, and Z is CH. Another embodiment provides the compound of Formula (I), wherein X is CH, Y is N, and Z is CH.
Another embodiment provides the compound of Formula (I) having the structure of Formula (II), or a pharmaceutically acceptable salt thereof:




wherein,

    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


In another embodiment is a compound of Formula (II) wherein R3 is hydrogen. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen and R4 is —CO2H. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen and R4 is —CO2R6. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2R6, and R6 is methyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2R6, and R6 is ethyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —C(O)N(H)CN. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is tetrazolyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —C(O)N(H)OH. In another embodiment is a compound of Formula (II) wherein R4 is tetrazolyl and the tetrazolyl is further substituted with a methyl or —Rb—OC(O)—Ra wherein Rb is C1-C3 alkylene and Ra is alkyl.
In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, and R2 is alkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with alkoxy. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with dialkylamino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (aryl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (carbocyclyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heteroaryl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heterocyclyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (aralkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (carbocyclylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heteroarylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heterocyclylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is heteroaryl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is heteroarylalkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is aralkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is —CO2H, R2 is carbocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is tetrazolyl, R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is tetrazolyl, R2 is heteroarylalkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is tetrazolyl, R2 is aralkyl. In another embodiment is a compound of Formula (II) wherein R3 is hydrogen, R4 is tetrazolyl, R2 is carbocyclylalkyl.
In another embodiment of the aforementioned embodiments is a compound of Formula (II) wherein R1 is aryl. In a further embodiment of the aforementioned embodiments is a compound of Formula (II) wherein R1 is phenyl optionally substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl. In yet a further embodiment of the aforementioned embodiments is a compound of Formula (II) wherein R1 is phenyl optionally substituted with one or more groups selected from halogen, —OH, —OR5, alkyl, carbocyclyl, heterocyclyl, and heteroaryl.
In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, and R2 is alkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with alkoxy. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with dialkylamino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (aryl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (carbocyclyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heteroaryl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heterocyclyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (aralkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (carbocyclylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heteroarylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is alkyl substituted with (heterocyclylalkyl)(alkyl)amino. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is heteroaryl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is heteroarylalkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is aralkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is —CO2H, R2 is carbocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is tetrazolyl, R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is tetrazolyl, R2 is heteroarylalkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is tetrazolyl, R2 is aralkyl. In another embodiment is a compound of Formula (II) wherein R1 is hydrogen, R3 is hydrogen, R4 is tetrazolyl, R2 is carbocyclylalkyl.
In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, R4 is —CO2H, and R2 is hydrogen. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, R4 is —CO2H, and R2 is alkyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, R4 is —CO2R6, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, R4 is tetrazolyl, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with two halogens, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one halogen, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one alkyl, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one carbocyclyl, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one heterocyclyl, R3 is hydrogen, R4 is —CO2H, and R2 is methyl. In another embodiment is a compound of Formula (II) wherein R1 is phenyl substituted with one heteroaryl, R3 is hydrogen, R4 is —CO2H, and R2 is methyl.
Another embodiment provides the compound of Formula (II) having the structure of Formula (IIa), or a pharmaceutically acceptable salt thereof:




wherein,

    R1 is hydrogen, halogen, —OH, —OR5, —N(R5)2, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is a tetrazolyl further substituted with a methyl or —Rb—OC(O)—Ra wherein Rb is C1-C3 alkylene and Ra is alkyl; and
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl.


In another embodiment is a compound of Formula (IIa) wherein R3 is hydrogen, and R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (IIa) wherein R3 is hydrogen, and R2 is heteroarylalkyl. In another embodiment is a compound of Formula (IIa) wherein R3 is hydrogen, and R2 is aralkyl. In another embodiment is a compound of Formula (IIa) wherein R3 is hydrogen, and R2 is carbocyclylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is hydrogen, R3 is hydrogen, and R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is hydrogen, R3 is hydrogen, and R2 is heteroarylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is hydrogen, R3 is hydrogen, and R2 is aralkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is hydrogen, R3 is hydrogen, and R2 is carbocyclylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is phenyl substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, alkyl, alkynyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, and heteroarylalkyl, R3 is hydrogen, and R2 is methyl. In another embodiment is a compound of Formula (IIa) wherein R1 is an optionally substituted phenyl, R3 is hydrogen, and R2 is heterocyclylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is an optionally substituted phenyl, R3 is hydrogen, and R2 is heteroarylalkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is an optionally substituted phenyl, R3 is hydrogen, and R2 is aralkyl. In another embodiment is a compound of Formula (IIa) wherein R1 is an optionally substituted phenyl, R3 is hydrogen, and R2 is carbocyclylalkyl.
One embodiment provides a compound of Formula (III) or a pharmaceutically acceptable salt thereof:




wherein:

    R1 is carbocyclyl, heterocyclyl, aryl, or heteroaryl;
    R2 is alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, heteroarylalkyl, —CON(R5)2, —CO2R5, SO2N(R5)2, or SO2R5;
    R3 is hydrogen, halogen, —OH, —NH2, —NH(C1-C3alkyl) or C1-C3alkyl;
    R4 is —CO2H, —CO2R6, —C(O)N(H)CN, —C(O)N(H)OH, or tetrazolyl;
    each R5 is independently hydrogen, alkyl, carbocyclyl, heterocyclyl, aryl, heteroaryl, carbocyclylalkyl, heterocyclylalkyl, aralkyl, or heteroarylalkyl; and
    R6 is alkyl.


Another embodiment provides the compound of Formula (III), wherein R1 is aryl. Another embodiment provides the compound of Formula (III), wherein R3 is hydrogen.
In some embodiments, the compound disclosed herein has the structure provided in Table 1.









TABLE 1





Chemical




Synthesis




Example
Structure
Name







1




2-(1-methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


2




2-(5-bromo-1-methyl-1H- imidazol-4-yl)pyridine-4- carboxylic acid


 


3




2-[5-(3-hydroxy-4- methylphenyl)-1-methyl-1H- imidazol-4-yl]pyridine-4- carboxylic acid


 


4




2-[1-methyl-5-(4-methylphenyl)- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


5




2-[5-(4-ethylphenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


6




2-{1-methyl-5-[4- (trifluoromethyl)phenyl]-1H- imidazol-4-yl}pyridine-4- carboxylic acid


 


7




2-[5-(4-cyclopropylphenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


8




methyl 2-[5-(4- cyclopropylphenyl)-1-methyl-1H- imidazol-4-yl]pyridine-4- carboxylate


 


9




2-[5-(4-tert-butylphenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


10




2-{1-methyl-5-[3- (methylcarbamoyl)phenyl]-1H- imidazol-4-yl}pyridine-4- carboxylic acid


 


11




2-{5-[3-(hydroxymethyl)phenyl]- 1-methyl-1H-imidazol-4- yl}pyridine-4-carboxylic acid


 


12




2-[5-(4-methoxyphenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


13




2-{1-methyl-5-[4- (trifluoromethoxy)phenyl]-1H- imidazol-4-yl}pyridine-4- carboxylic acid


 


14




2-[5-(4-ethoxyphenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


15




2-{1-methyl-5-[4-(1H-pyrazol-1- yl)phenyl]-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


16




2-{5-[4- (cyclopropylmethoxy)phenyl]-1- methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


17




2-(5-{4-[1- (hydroxymethyl)cyclopropyl] phenyl}-1-methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


18




2-{1-methyl-5-[4-(pyrrolidin-1- yl)phenyl]-1H-imidazol-4- yl}pyridine-4-carboxylic acid


 


19




2-[5-(4-chlorophenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


20




2-[5-(3-chlorophenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


21




2-[5-(4-ethynylphenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


22




2-[5-(1H-indol-6-yl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


23




2-[5-(4-fluorophenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


24




2-[5-(3-fluorophenyl)-1-methyl- 1H-imidazol-4-yl]pyridine-4- carboxylic acid


 


25




2-(5-{4-[1- (methoxymethyl)cyclopropyl] phenyl}-1-methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


26




2-[5-(4-chloro-2-methylphenyl)- 1-methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


27




2-{5-[4-chloro-2- (trifluoromethyl)phenyl]-1- methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


28




2-[5-(3,4-dichlorophenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


29




2-[5-(4-chloro-3-fluorophenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


30




2-[5-(4-chloro-3-methoxyphenyl)- 1-methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


31




2-{5-[4-chloro-3- (trifluoromethyl)phenyl]-1- methyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


32




2-[5-(4-chloro-2-ethoxyphenyl)- 1-methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


33




2-[5-(2,4-dichlorophenyl)-1- methyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


34




2-(1-methyl-5-{4-[1- (trifluoromethyl)cyclopropyl] phenyl}-1H-imidazol-4-yl) pyridine-4-carboxylic acid


 


35




2-[5-(4-chloro-3-fluorophenyl)-1- propyl-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


36




2-[5-(4-chloro-3-fluorophenyl)-1- (3-methoxypropyl)-1H-imidazol- 4-yl]pyridine-4-carboxylic acid


 


37




2-[5-(4-chloro-3-fluorophenyl)-1- (2-methoxyethyl)-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


38




2-[1-[2-[(4-fluorophenyl)methyl- methylamino]ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


39




2-{5-(4-chloro-3-fluorophenyl)-1- [2-(dimethylamino)ethyl]-1H- imidazol-4-yl)pyridine-4- carboxylic acid


 


40




2-{1-[2-(dimethylamino)ethyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


41




2-(1-propyl-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


42




2-{1-[3-(dimethylamino)propyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


43




2-{1-[2-(pyrrolidin-1-yl)ethyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


44




methyl 2-{1-[2-(pyrrolidin-1- yl)ethyl]-1H-imidazol-4- yl}pyridine-4-carboxylate


 


45




2-{1-[2-(morpholin-4-yl)ethyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


46




2-{1-[2-(1H-pyrazol-1-yl)ethyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


47




2-[1-(pyridin-2-ylmethyl)-1H- imidazol-4-yl]pyridine-4- carboxylic acid


 


48




2-(1-{2-[2- (dimethylamino)ethoxy]ethyl}- 1H-imidazol-4-yl)pyridine-4- carboxylic acid


 


49




2-[1-(1-methylpiperidin-4-yl)-1H- imidazol-4-yl]pyridine-4- carboxylic acid


 


50




2-{1-[(1-methylpiperidin-4- yl)methyl]-1H-imidazol-4- yl}pyridine-4-carboxylic acid


 


51




2-[1-(tetrahydrofuran-2- ylmethyl)-1H-imidazol-4- yl]pyridine-4-carboxylic acid


 


52




2-[1-(pyrrolidin-3-yl)-1H- imidazol-4-yl]pyridine-4- carboxylic acid


 


53




2-[1-(pyrrolidin-2-ylmethyl)-1H- imidazol-4-yl]pyridine-4- carboxylic acid


 


54




2-(1-[(4-methylmorpholin-2- yl)methyl]-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


55




2-{1-[(1-methylpiperidin-3- yl)methyl]-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


56




methyl 2-(1-{2- [benzyl(methyl)amino]ethyl}-1H- imidazol-4-yl)pyridine-4- carboxylate


 


57




2-(1-{2- [benzyl(methyl)amino]ethyl)-1H- imidazol-4-yl)pyridine-4- carboxylic acid


 


58




2-(1-{2- [methyl(phenyl)amino]ethyl}-1H- imidazol-4-yl)pyridine-4- carboxylic acid


 


59




2-(1-{2- [(cyclopropylmethyl)(methyl) amino]ethyl}-1H-imidazol-4- yl)pyridine-4-carboxylic acid


 


60




2-{1-[2-(2-oxopyirolidin-1- yl)ethyl]-1 H-imidazol-4- yl}pyridine-4-carboxylic acid


 


61




2-{1-[2-(pyrrolidin-1-yl)propyl]- 1H-imidazol-4-yl}pyridine-4- carboxylic acid


 


62




2-(1-methyl-1H-imidazol-4-yl)-4- (2H-tetrazol-5-yl)pyridine


 


63




2-{1-[2-(pyrrolidin-1-yl)ethyl]- 1H-imidazol-4-yl}-4-(2H- tetrazol-5-yl)pyridine


 


64




N-cyano-2-(1-{2- [(cyclopropylmethyl)(methyl) amino]ethyl}-1H-imidazol-4- yl)pyridine-4-carboxamide


 


65




N-benzyl-2-fluoro-5-[3-methyl-5- [4-(2H-tetrazol-5-yl)pyridin-2- yl]imidazol-4-yl]benzamide


 


66




2-[1-[2-[methyl-[(3- methylphenyl)methyl]amino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


67




2-[1-[2-[methyl-[(4- methylphenyl)methyl]amino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


68




2-[1-[2-[methyl-[[4- (trifluoromethyl)phenyl]methyl] amino]ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


69




2-[1-[2-[(3-fluorophenyl)methyl- methylamino]ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


70




2-[1-[2-[ethyl-[(4- fluorophenyl)methyl]amino]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


71




2-[1-[2-[cyclopropyl-[(4- fluorophenyl)methyl]amino]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


72




2-[1-[2-[(4,4- difluorocyclohexyl)methylamino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


73




2-[1-[2-[(3,3- difluorocyclobutyl)methylamino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


74




2-[1-[2-[(4- fluorophenyl)methylamino]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


75




2-[1-[2-[[2- (trifluoromethyl)phenyl] methylamino]ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


76




2-[1-[2-(1,3-dihydroisoindol-2- yl)ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


77




2-[1-[2-[(2- methoxyphenyl)methylamino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


78




2-[1-[2-[(2- chlorophenyl)methylamino]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


79




2-[1-[2-(5-fluoro-1,3- dihydroisoindol-2- yl)ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


80




2-[1-[2-[(2- ethylphenyl)methylamino]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


81




2-[1-[2-(4-chloro-1,3- dihydroisoindol-2- yl)ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


82




2-[1-[2-(5-chloro-1,3- dihydroisoindol-2- yl)ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


83




2-[1-[2-(4-cyano-1,3- dihydroisoindol-2- yl)ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


84




2-[1-[2-[5-(trifluoromethyl)-1,3- dihydroisoindol-2- yl]ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


85




2-[1-[2-[(4-chlorophenyl)methyl- cyclopropylamino]ethyl]imidazol- 4-yl]pyridine-4-carboxylic acid


 


86




2-[1-[2-[cyclopropyl-[(3,4- dichlorophenyl)methyl]amino] ethyl]imidazol-4-yl]pyridine-4- carboxylic acid


 


87




2-[1-[2-(4-chloro-N- methylanilino)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


88




2-[1-[2-(3,4-dihydro-2H-quinolin- 1-yl)ethyl]imidazol-4-yl]pyridine- 4-carboxylic acid


 


89




2-[1-[2-(6-chloro-3,4-dihydro- 2H-quinolin-1-yl)ethyl]imidazol- 4-yl]pyridine-4-carboxylic acid


 


90




2-[1-[2-(6-fluoro-3,4-dihydro-2H- quinolin-1-yl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


91




2-[1-[2-(5-fluoro-2,3- dihydroindol-1-yl)ethyl]imidazol- 4-yl]pyridine-4-carboxylic acid


 


92




2-[1-[2-(4- fluorophenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


93




2-[1-[2-(2- fluorophenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


94




2-[1-[2-(4- methoxyphenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


95




2-[1-[2-(2- methoxyphenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


96




2-[1-[2-(2- methylphenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


97




2-[1-[2-(2- chlorophenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


98




2-[1-[2-[2- (trifluoromethyl)phenyl]ethyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


99




2-[1-(2,3-dihydro-1H-inden-2- yl)imidazol-4-yl]pyridine-4- carboxylic acid


 


100




2-(1-benzylimidazol-4- yl)pyridine-4-carboxylic acid


 


101




2-[1-[(4- fluorophenyl)methyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


102




2-[1-[(2- fluorophenyl)methyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


103




2-[1-(1-phenylethyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


104




2-[1-[(3- fluorophenyl)methyl]imidazol-4- yl]pyridine-4-carboxylic


 


105




2-[1-[2-(2-chlorophenyl)-2- methylpropyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


106




2-[1-(1-phenylpropan-2- yl)imidazol-4-yl]pyridine-4- carboxylic acid


 


107




2-[1-(1-phenylpropyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


108




2-[1-(2-methyl-1- phenylpropyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


109




2-[1-(6-fluoro-2,3-dihydro-1H- inden-1-yl)imidazol-4- yl]pyridine-4-carboxylic acid


 


110




2-[1-(4-fluoro-2,3-dihydro-1H- inden-1-yl)imidazol-4- yl]pyridine-4-carboxylic acid


 


111




2-[1-[(3- phenylphenyl)methyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


112




2-[1-(2-naphthalen-1- ylethyl)imidazol-4-yl]pyridine-4- carboxylic acid


 


113




2-[1-[2-(3- chlorophenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylic acid


 


114




2-[1-(2-cyclohexylethyl)imidazol- 4-yl]pyridine-4-carboxylic acid


 


115




2-[1-(cyclohexylmethyl)imidazol- 4-yl]pyridine-4-carboxylic acid


 


116




2-[1-(1,2,3,4- tetrahydronaphthalen-1- ylmethyl)imidazol-4-yl]pyridine- 4-carboxylic acid


 


117




2-[1-[[3- (trifluoromethyl)phenyl]methyl] imidazol-4-yl]pyridine-4- carboxylic acid


 


118




methyl 2-[1-[2-(2- fluorophenyl)ethyl]imidazol-4- yl]pyridine-4-carboxylate


 


119




methyl 2-[1-[(3- phenylphenyl)methyl]imidazol-4- yl]pyridine-4-carboxylate


 


120




2-[5-[2-(cyclopropylmethoxy)-4- fluorophenyl]-1-methylimidazol- 4-yl]pyridine-4-carboxylic acid


 


121




2-[5-[2-(cyclopropylmethoxy)- 4,5-difluorophenyl]-1- methylimidazol-4-yl]pyridine-4- carboxylic acid


 


122




2-[5-[2-(cyclopropylmethoxy)-6- fluorophenyl]-1-methylimidazol- 4-yl]pyridine-4-carboxylic acid


 


123




2-[5-[2-(cyclopropylmethoxy)-5- methylphenyl]-1-methylimidazol- 4-yl]pyridine-4-carboxylic acid


 


124




2-[1-[2-(2-chlorophenyl)ethyl]-5- (4-fluorophenyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


125




2-[1-(cyclopropylmethyl)-5-(4- fluorophenyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


126




2-[5-(4-chlorophenyl)-1- (cyclopropylmethyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


127




2-[1-[(2-chlorophenyl)methyl]-5- (4-fluorophenyl)imidazol-4- yl]pyridine-4-carboxylic acid


 


128




2-[1-[2-(2- ethoxyphenyl)ethyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


129




2-[1-[(2- chlorophenyl)methyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


130




2-[1-[(3- chlorophenyl)methyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


131




2-[1-[(4- chlorophenyl)methyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


132




2-[1-[2-(2-chlorophenyl)ethyl]-5- (4-fluorophenyl)imidazol-4-yl]-4- (2H-tetrazol-5-yl)pyridine


 


133




2-[5-(4-chlorophenyI)-1-[2-(2- chlorophenyl)ethyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


134




2-[5-(4-fluorophenyl)-1-(2,2,2- trifluoroethyl)imidazol-4-yl]-4- (2H-tetrazol-5-yl)pyridine


 


135




2-[1-(cyclopropylmethyl)-5-(4- fluorophenyl)imidazol-4-yl]-4- (2H-tetrazol-5-yl)pyridine


 


136




2-[5-(4-chlorophenyl)-1- (cyclopropylmethyl)imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


137




2-[1-[(2-chlorophenyl)methyl]-5- (4-fluorophenyl)imidazol-4-yl]-4- (2H-tetrazol-5-yl)pyridine


 


138




[5-[2-[1-[(2- chlorophenyl)methyl]-5-(4- fluorophenyl)imidazol-4- yl]pyridin-4-yl]tetrazol-2- yl]methyl acetate


 


139




[5-[2-[1-[(2- chlorophenyl)methyl]-5-(4- fluorophenyl)imidazol-4- yl]pyridin-4-yl]tetrazol-2- yl]methyl 2,2-dimethylpropanoate


 


140




4-(2H-tetrazol-5-yl)-2-[1-[2-[2- (trifluoromethyl)phenyl]ethyl] imidazol-4-yl]pyridine


 


141




2-[1-[2-(2- chlorophenyl)ethyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


142




2-[1-(2-naphthalen-1- ylethyl)imidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


143




2-[1-(1,2,3,4- tetrahydronaphthalen-1- ylmethyl)imidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


144




2-[1-(1-phenylpropyl)imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


145




2-[1-(2-methyl-1- phenylpropyl)imidazol-4-yl]-4- (2H-tetrazol-5-yl)pyridine


 


146




2-[1-(1,2,3,4- tetrahydronaphthalen-2- ylmethyl)imidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


147




2-[1-(2,3-dihydro-1H-inden-2- ylmethyl)imidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


148




2-[5-(4-fluoro-2- phenylmethoxyphenyl)-1- methylimidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


149




2-[5-(2-butoxy-4-fluorophenyl)-1- methylimidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


150




2-[5-[2-(cyclopropylmethoxy)-4- fluorophenyl]-1-methylimidazol- 4-yl]-4-(2H-tetrazol-5-yl)pyridine


 


151




2-[1-[(2,6- dichlorophenyl)methyl]imidazol- 4-yl]-4-(2H-tetrazol-5-yl)pyridine


 


152




4-(2H-tetrazol-5-yl)-2-[1-[[2- (2,2,2- trifluoroethoxy)phenyl]methyl] imidazol-4-yl]pyridine


 


153




2-[1-[[2-(2- methylpropoxy)phenyl]methyl] imidazol-4-yl]-4-(2H-tetrazol-5- yl)pyridine


 


154




2-[1-[[2-chloro-3- (trifluoromethyl)phenyl]methyl] imidazol-4-yl]-4-(2H-tetrazol-5- yl)pyridine


 


155




2-[1-(naphthalen-1- ylmethyl)imidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


156




4-(2H-tetrazol-5-yl)-2-[1-[[2- (trifluoromethoxy)phenyl]methyl] imidazol-4-yl]pyridine


 


157




2-[1-[1-(2- chlorophenyl)ethyl]imidazol-4- yl]-4-(2H-tetrazol-5-yl)pyridine


 


158




2-[1-[(2,3- dichlorophenyl)methyl]imidazol- 4-yl]-4-(2H-tetrazol-5-yl)pyridine


 


159




2-[5-[4-fluoro-3-(2,2,2- trifluoroethoxy)phenyl]-1- methylimidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


160




2-[5-(4-fluoro-3- phenylmethoxyphenyl)-1- methylimidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


161




2-[5-(4-chloro-3- phenylmethoxyphenyl)-1- methylimidazol-4-yl]pyridine-4- carbonitrile


 


162




2-fluoro-5-[3-methyl-5-[4-(2H- tetrazol-5-yl)pyridin-2- yl]imidazol-4-yl]phenol


 


163




2-fluoro-5-[3-methyl-5-[4-(2H- tetrazol-5-yl)pyridin-2- yl]imidazol-4-yl]-N- phenylbenzamide


 


164




2-[5-(4-fluoronaphthalen-1-yl)-1- methylimidazol-4-yl]-4-(2H- tetrazol-5-yl)pyridine


 


165




2-(1-(2-chlorobenzyl)-1H- imidazol-4-yl)-4-(2-methyl-2H- tetrazol-5-yl)pyridine


 


166




(5-(2-(1-(2-chlorobenzyl)-1H- imidazol-4-yl)pyridin-4-yl)-2H- tetrazol-2-yl)methyl pivalate


 


167




(5-(2-(1-(2-chlorobenzyl)-1H- imidazol-4-yl)pyridin-4-yl)-2H- tetrazol-2-yl)methyl acetate


 


168




(5-(2-(1-((1,2,3,4- tetrahydronaphthalen-1- yl)methyl)-1H-imidazol-4- yl)pyridin-4-yl)-2H-tetrazol-2- yl)methyl pivalate


 


169




2-(1-(3-chlorobenzyl)-5-(2- (cyclopropylmethoxy)-4- fluorophenyl)-1H-imidazol-4-yl)- 4-(2H-tetrazol-5-yl)pyridine









In some embodiments, the compound disclosed herein has the structure provided in Table 2.







TABLE 2













 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 








 















Preparation of the Substituted Imidazole-Pyridine Derivative Compounds

The compounds used in the reactions described herein are made according to organic synthesis techniques known to those skilled in this art, starting from commercially available chemicals and/or from compounds described in the chemical literature. “Commercially available chemicals” are obtained from standard commercial sources including Acros Organics (Pittsburgh, Pa.), Aldrich Chemical (Milwaukee, Wis., including Sigma Chemical and Fluka), Apin Chemicals Ltd. (Milton Park, UK), Avocado Research (Lancashire, U.K.), BDH Inc. (Toronto, Canada), Bionet (Cornwall, U.K.), Chemservice Inc. (West Chester, Pa.), Crescent Chemical Co. (Hauppauge, N.Y.), Eastman Organic Chemicals, Eastman Kodak Company (Rochester, N.Y.), Fisher Scientific Co. (Pittsburgh, Pa.), Fisons Chemicals (Leicestershire, UK), Frontier Scientific (Logan, Utah), ICN Biomedicals, Inc. (Costa Mesa, Calif.), Key Organics (Cornwall, U.K.), Lancaster Synthesis (Windham, N.H.), Maybridge Chemical Co. Ltd. (Cornwall, U.K.), Parish Chemical Co. (Orem, Utah), Pfaltz & Bauer, Inc. (Waterbury, Conn.), Polyorganix (Houston, Tex.), Pierce Chemical Co. (Rockford, Ill.), Riedel de Haen AG (Hanover, Germany), Spectrum Quality Product, Inc. (New Brunswick, N.J.), TCI America (Portland, Oreg.), Trans World Chemicals, Inc. (Rockville, Md.), and Wako Chemicals USA, Inc. (Richmond, Va.).
Methods known to one of ordinary skill in the art are identified through various reference books and databases. Suitable reference books and treatise that detail the synthesis of reactants useful in the preparation of compounds described herein, or provide references to articles that describe the preparation, include for example, “Synthetic Organic Chemistry”, John Wiley & Sons, Inc., New York; S. R. Sandler et al., “Organic Functional Group Preparations,” 2nd Ed., Academic Press, New York, 1983; H. O. House, “Modern Synthetic Reactions”, 2nd Ed., W. A. Benjamin, Inc. Menlo Park, Calif. 1972; T. L. Gilchrist, “Heterocyclic Chemistry”, 2nd Ed., John Wiley & Sons, New York, 1992; J. March, “Advanced Organic Chemistry: Reactions, Mechanisms and Structure”, 4th Ed., Wiley-Interscience, New York, 1992. Additional suitable reference books and treatise that detail the synthesis of reactants useful in the preparation of compounds described herein, or provide references to articles that describe the preparation, include for example, Fuhrhop, J. and Penzlin G. “Organic Synthesis: Concepts, Methods, Starting Materials”, Second, Revised and Enlarged Edition (1994) John Wiley & Sons ISBN: 3-527-29074-5; Hoffman, R. V. “Organic Chemistry, An Intermediate Text” (1996) Oxford University Press, ISBN 0-19-509618-5; Larock, R. C. “Comprehensive Organic Transformations: A Guide to Functional Group Preparations” 2nd Edition (1999) Wiley-VCH, ISBN: 0-471-19031-4; March, J. “Advanced Organic Chemistry Reactions, Mechanisms, and Structure” 4th Edition (1992) John Wiley & Sons, ISBN: 0-471-60180-2; Otera, J. (editor) “Modern Carbonyl Chemistry” (2000) Wiley-VCH, ISBN: 3-527-29871-1; Patai, S. “Patai's 1992 Guide to the Chemistry of Functional Groups” (1992) Interscience ISBN: 0-471-93022-9; Solomons, T. W. G. “Organic Chemistry” 7th Edition (2000) John Wiley & Sons, ISBN: 0-471-19095-0; Stowell, J. C., “Intermediate Organic Chemistry” 2nd Edition (1993) Wiley-Interscience, ISBN: 0-471-57456-2; “Industrial Organic Chemicals Starting Materials and Intermediates: An Ullmann's Encyclopedia” (1999) John Wiley & Sons, ISBN: 3-527-29645-X, in 8 volumes; “Organic Reactions” (1942-2000) John Wiley & Sons, in over 55 volumes; and “Chemistry of Functional Groups” John Wiley & Sons, in 73 volumes.
Specific and analogous reactants may also be identified through the indices of known chemicals prepared by the Chemical Abstract Service of the American Chemical Society, which are available in most public and university libraries, as well as through on-line databases (the American Chemical Society, Washington, D.C., may be contacted for more details). Chemicals that are known but not commercially available in catalogs may be prepared by custom chemical synthesis houses, where many of the standard chemical supply houses (e.g., those listed above) provide custom synthesis services. A reference for the preparation and selection of pharmaceutical salts of the substituted imidazole-pyridine derivative compounds described herein is P. H. Stahl & C. G. Wermuth “Handbook of Pharmaceutical Salts”, Verlag Helvetica Chimica Acta, Zurich, 2002.
The substituted imidazole-pyridine derivative compounds are prepared by the general synthetic routes described below in Schemes 1-5.




A method for preparing compounds of formula 1-4 is provided in Scheme 1. Via Stille coupling, 2-chloro-4-pyridinenitrile is treated with N-methyl-4-(tributylstannyl)imidazole in an organic solvent, such as toluene, under microwave heating (e.g., about 120° C.), in presence of a Pd catalyst (e.g. tetrakistriphenylphosphine palladium (0)) to give intermediate 1-1. Subsequent reaction with stoichiometric amount of NBS provides a single brominated product 1-2. Using Suzuki condition, substituted phenyl imidazole intermediates 1-3 are obtained, which upon heating using NaOH aqueous solution (5-10N) in an alcoholic solvent such as EtOH afford the carboxylic acid compounds of formula 1-4.




A method for preparing compounds of formula 2-4 is provided in Scheme 2. 2-Chloro-4-pyridinenitrile is treated with 4-(tributylstannyl)-1-tritylimidazole using a similar Stille coupling condition as described in scheme 1 to give trityl protected imidazole intermediate 2-1. It is then treated with acetic acid at elevated temperature (e.g. 90° C.) to deprotect the trityl group. Intermediate 2-2 is then alkylated with alkyl halide (alkyl chloro or alkyl bromo) using a base, such as sodium hydride or cesium carbonate, in an organic solvent, such as DMF, at room temperature (when using NaH) or under heating condition (e.g 90-120° C., when using cesium carbonate) to give 2-3. Hydrolysis using concentrated sodium hydroxide solution (e.g. 5-10 N) in ethanol upon heating (e.g. 90° C.) provides the carboxylic acid compounds of formula 2-4.
A method to prepare N-ethylamino substituted imidazole-pyridines of formula 3-7 is provided in Scheme 3. 2-Bromoethanol is first treated with trityl chloride in presence of a base, such as TEA, in an anhydrous organic solvent, such as DCM, to give 3-1. Alkylation of bromoimidazole (obtained by bromination on imidazole using bromine) using 3-1, under treatment with sodium hydride gives 3-2. It is then converted to tin reagent using bis(tributyltin), triphenyl phosphine, palladium acetate and a base (e.g sodium carbonate) under heating







conditions. Via Stille coupling as described in Scheme 1, substituted imidazolo pyridine 3-4 is obtained. The trityl protective group is removed by treatment with an acid, such as HCl. The alcohol intermediate 3-5 is then converted to the mesylate, followed by displacement with N-methyl substituted amines under heating condition (e.g. 110° C.) in an organic solvent, such as toluene. Upon hydrolysis using sodium hydroxide solution (5-10N), the carboxylic acid compounds of formula 3-7 are obtained.





Methods for preparing compounds of formula 4-2 and 4-3 are provided in Scheme 4. Treatment of acid 4-1 with hydroxylamine hydrochloride in the presence of a coupling reagent, such as HATU, in a solvent, such as DMF, at room temperature for 1 to 24 hours provides compounds 4-2. Compound 4-1 can also be used to prepare N-acylcyanamides such as compound 4-3. Treatment of 4-1 with cyanamide in the presence of an acid coupling reagent, such as HATU, in a solvent, such as DMF, at room temperature for 1 to 24 hours provides compounds 4-3.
A method for preparing compounds of formula 5-2 is provided in Scheme 5. Treatment of the nitrile intermediate 5-1 with sodium azide and ammonium chloride in DMF followed by heating to 90° C. for 2 to 24 hours provides the desired tetrazole derivative 5-2.




In each of the above reaction procedures or schemes, the various substituents may be selected from among the various substituents otherwise taught herein.
Pharmaceutical Compositions
In certain embodiments, the substituted imidazole-pyridine derivative compound as described herein is administered as a pure chemical. In other embodiments, the substituted imidazole-pyridine derivative compound described herein is combined with a pharmaceutically suitable or acceptable carrier (also referred to herein as a pharmaceutically suitable (or acceptable) excipient, physiologically suitable (or acceptable) excipient, or physiologically suitable (or acceptable) carrier) selected on the basis of a chosen route of administration and standard pharmaceutical practice as described, for example, in Remington: The Science and Practice of Pharmacy (Gennaro, 21st Ed. Mack Pub. Co., Easton, Pa. (2005)), the disclosure of which is hereby incorporated herein by reference in its entirety.
Accordingly, provided herein is a pharmaceutical composition comprising at least one substituted imidazole-pyridine derivative compound, or a stereoisomer, pharmaceutically acceptable salt, hydrate, solvate, or N-oxide thereof, together with one or more pharmaceutically acceptable carriers. The carrier(s) (or excipient(s)) is acceptable or suitable if the carrier is compatible with the other ingredients of the composition and not deleterious to the recipient (i.e., the subject) of the composition.
One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound of Formula (I), or a pharmaceutically acceptable salt thereof.
One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound of Formula (III), or a pharmaceutically acceptable salt thereof.
In certain embodiments, the substituted imidazole-pyridine derivative compound as described by Formula (I) or (III) is substantially pure, in that it contains less than about 5%, or less than about 1%, or less than about 0.1%, of other organic small molecules, such as contaminating intermediates or by-products that are created, for example, in one or more of the steps of a synthesis method.
Suitable oral dosage forms include, for example, tablets, pills, sachets, or capsules of hard or soft gelatin, methylcellulose or of another suitable material easily dissolved in the digestive tract. Suitable nontoxic solid carriers can be used which include, for example, pharmaceutical grades of mannitol, lactose, starch, magnesium stearate, sodium saccharin, talcum, cellulose, glucose, sucrose, magnesium carbonate, and the like. (See, e.g., Remington: The Science and Practice of Pharmacy (Gennaro, 21st Ed. Mack Pub. Co., Easton, Pa. (2005)).
The dose of the composition comprising at least one substituted imidazole-pyridine derivative compound as described herein may differ, depending upon the patient's (e.g., human) condition, that is, stage of the disease, general health status, age, and other factors that a person skilled in the medical art will use to determine dose.
Pharmaceutical compositions may be administered in a manner appropriate to the disease to be treated (or prevented) as determined by persons skilled in the medical arts. An appropriate dose and a suitable duration and frequency of administration will be determined by such factors as the condition of the patient, the type and severity of the patient's disease, the particular form of the active ingredient, and the method of administration. In general, an appropriate dose and treatment regimen provides the composition(s) in an amount sufficient to provide therapeutic and/or prophylactic benefit (e.g., an improved clinical outcome, such as more frequent complete or partial remissions, or longer disease-free and/or overall survival, or a lessening of symptom severity. Optimal doses may generally be determined using experimental models and/or clinical trials. The optimal dose may depend upon the body mass, weight, or blood volume of the patient.
Oral doses can typically range from about 1.0 mg to about 1000 mg, one to four times, or more, per day.
Histone Demethylase
Chromatin is the complex of DNA and protein that makes up chromosomes. Histones are the major protein component of chromatin, acting as spools around which DNA winds. Changes in chromatin structure are affected by covalent modifications of histone proteins and by non-histone binding proteins. Several classes of enzymes are known which can covalently modify histones at various sites.
Proteins can be post-translationally modified by methylation on amino groups of lysines and guanidino groups of arginines or carboxymethylated on aspartate, glutamate, or on the C-terminus of the protein. Post-translational protein methylation has been implicated in a variety of cellular processes such as RNA processing, receptor mediated signaling, and cellular differentiation. Post-translational protein methylation is widely known to occur on histones, such reactions known to be catalyzed by histone methyltransferases, which transfer methyl groups from S-adenyosyl methionine (SAM) to histones. Histone methylation is known to participate in a diverse range of biological processes including heterochromatin formation, X-chromosome inactivation, and transcriptional regulation (Lachner et al., (2003) J. Cell Sci. 116:2117-2124; Margueron et al., (2005) Curr. Opin. Genet. Dev. 15:163-176).
Unlike acetylation, which generally correlates with transcriptional activation, whether histone methylation leads to transcription activation or repression depends on the particular site of methylation and the degree of methylation (e.g., whether a particular histone lysine residue is mono-, di-, or tri-methylated). However, generally, methylation on H3K9, H3K27 and H4K20 is linked to gene silencing, while methylation on H3K4, H3K36, and H3K79 is generally associated with active gene expression. In addition, tri- and di-methylation of H3K4 generally marks the transcriptional start sites of actively transcribed genes, whereas mono-methylation of H3K4 is associated with enhancer sequences.
A “demethylase” or “protein demethylase,” as referred to herein, refers to an enzyme that removes at least one methyl group from an amino acid side chain. Some demethylases act on histones, e.g., act as a histone H3 or H4 demethylase. For example, an H3 demethylase may demethylate one or more of H3K4, H3K9, H3K27, H3K36 and/or H3K79. Alternately, an H4 demethylase may demethylate histone H4K20. Demethylases are known which can demethylate either a mono-, di- and/or a tri-methylated substrate. Further, histone demethylases can act on a methylated core histone substrate, a mononucleosome substrate, a dinucleosome substrate and/or an oligonucleosome substrate, peptide substrate and/or chromatin (e.g., in a cell-based assay).
The first lysine demethylase discovered was lysine specific demethylase 1 (LSD1/KDM1), which demethylates both mono- and di-methylated H3K4 or H3K9, using flavin as a cofactor. A second class of Jumonji C (JmjC) domain containing histone demthylases were predicted, and confirmed when a H3K36 demethylase was found using a formaldehyde release assay, which was named JmjC domain containing histone demethylase 1 (JHDM1/KDM2A).
More JmjC domain-containing proteins were subsequently identified and they can be phylogenetically clustered into seven subfamilies: JHDM1, JHDM2, JHDM3, JMJD2, JARID, PHF2/PHF8, UTX/UTY, and JmjC domain only.
JMJD2 Family
The JMJD2 family of proteins are a family of histone-demethylases known to demethylate tri- and di-methylated H3-K9, and were the first identified histone tri-methyl demethylases. In particular, ectopic expression of JMJD2 family members was found to dramatically decrease levels of tri- and di-methylated H3-K9, while increasing levels of mono-methylated H3-K9, which delocalized Heterochromatin Protein 1 (HP1) and reduced overall levels of heterochromatin in vivo. Members of the JMJD2 subfamily of jumonji proteins include JMJD2C and its homologues JMJD2A, JMJD2B, JMJD2D and JMJD2E. Common structural features found in the JMJD2 subfamily of Jumonji proteins include the JmjN, JmjC, PHD and Tdr sequences.
JMJD2C, also known as GASC1 and KDM4C, is known to demethylate tri-methylated H3K9 and H3K36. Histone demethylation by JMJD2C occurs via a hydroxylation reaction dependent on iron and α-ketoglutarate, wherein oxidative decarboxylation of α-ketoglutarate by JMJD2C produces carbon dioxide, succinate, and ferryl and ferryl subsequently hydroxylates a methyl group of lysine H3K9, releasing formaldehyde. JMJD2C is known to modulate regulation of adipogenesis by the nuclear receptor PPARγ and is known to be involved in regulation of self-renewal in embryonic stem cells.
JARID Family
As used herein, a “JARID protein” includes proteins in the JARID1 subfamily (e.g., JARID1A, JARID1B, JARID1C and JARID1D proteins) and the JARID2 subfamily, as well as homologues thereof. A further description and listing of JARID proteins can be found in Klose et al. (2006) Nature Reviews/Genetics 7:715-727. The JARID1 family contains several conserved domains: JmjN, ARID, JmjC, PHD and a C5HC2 zing finger.
JARID1A, also called KDM5A or RBP2, was initially found as a binding partner of retinoblastoma (Rb) protein. JARID1A was subsequently found to function as a demethylase of tri- and di-methylated H3K4, and has been found to promote cell growth, while inhibiting senescence and differentiation. For instance, abrogation of JARID1A from mouse cells inhibits cell growth, induces senescence and differentiation, and causes loss of pluripotency of embryonic stem cells in vitro. JARID1A has been found to be overexpressed in gastric cancer and the loss of JARID1A has been found to reduce tumorigenesis in a mouse cancer model. Additionally, studies have demonstrated that loss of the retinoblastome binding protein 2 (RBP2) histone demethylase suppresses tumorigenesis in mice lacking Rb1 or Men1 (Lin et al. Proc. Natl. Acad. Sci. USA, Aug. 16, 2011, 108(33), 13379-86; doi: 10.1073/pnas.1110104108) and lead to the conclusion that RBP2-inhibitory drugs would have anti-cancer activity.
JARID1B, also referred to as KDM5B and PLU1, was originally found in experiments to discover genes regulated by the HER2 tyrosine kinase. JARID1B has consistently been found to be expressed in breast cancer cell lines, although restriction of JARID1B has been found in normal adult tissues, with the exception of the testis. In addition, 90% of invasive ductal carcinomas have been found to express JARID1B. In addition, JARID1B has been found to be up-regulated in prostate cancers, while having more limited expression in benign prostate, and has also been found to be up-regulated in bladder cancer and lung cancer (both SCLC and NSCLC). JARID1B has also been found to repress tumor suppressor genes such as BRCA1, CAV1 and 14-3-3σ, and knockdown of JARID1B was found to increase the levels of tri-methylated H3K4 at these genes.
FBXL10 and FBXL11
F-box and leucine-rich repeat protein 10 (FBXL10) and F-box and leucine-rich repeat protein 11 (FBXL11) are multifunctional F-box family proteins that demethylate histone H3 through a hydroxylation based mechanism. FBXL10, also known as lysine (K)-specific demethylase 2B (KDM2B) or Jumonji C domain-containing histone demethylase 1B (JHDM1B), preferentially demethylates trimethylated K4 and dimethylated K36 of histone H3, but contains weak or no activity for mono- and tri-methylated H3-K36. FBXL10 contains three domains, a catalytic JMJC domain, an F-box domain and a CXXC DNA-binding domain. The N-terminal JMJC domain coordinates iron and α-ketoglutarate to catalyze demethylation through the hydroxylation based mechanism. The CXXC DNA-binding domain allows FBXL10 to preferentially bind to transcribed region of the ribosomal RNA, leading to repression of the ribosomal RNA gene transcription and ultimately leading to inhibition of cell growth and proliferation. FBXL10 has been found to be overexpressed in acute myeloid leukemia, bladder carcinoma and pancreatic ductal adenocarcinoma. Recently, it has been demonstrated that FBXL10 regulates the expression of Polycomb target genes, those proteins are epigenetic regulators essential for stem cell differentiation. This regulation implicates FBXL10's involvement in tumorigenesis through the regulation of these Polycomb target genes. FBXL11, also known as KDM2A or JHDM1A, demethylates mono- and di-methylated K36 of histone H3. The CXXC DNA-binding domain recognizes non-methylated DNA and targets CpG island regions where it specifically removes H3K3 methylation. Further, FBXL11 is required to maintain a heterochromatic state, sustain centromeric integrity and genomic stability during mitosis. In addition, FBXL11 is a key negative regulator of NF-KB. Overexpression of FBXL11 has been observed in non-small cell lung cancer (NSCLC) where FBXL11 upregulates phosphor-ERK1/2 by repressing DUSP3 expression in NSCLC cell lines. Negative regulation of gluconeogenic gene expression by FBXL11 results in suppression of two rate-limiting gluconeogenic enzymes, critical for maintaining blood glucose homeostasis.
In an additional embodiment is a method for inhibiting a histone-demethylase enzyme comprising contacting a histone demethylase enzyme with a compound of Formula (I) or (II), or a pharmaceutically acceptable salt thereof.
In an additional embodiment is the method for inhibiting a histone-demethylase enzyme, wherein the histone-demethylase enzyme comprises a JmjC domain. In an additional embodiment is the method for inhibiting a histone-demethylase enzyme, wherein the histone-demethylase enzyme is selected from JARID1A, JARID1B, JMJD2C, JMJD2A or FBXL10.
Methods of Treatment
Disclosed herein are methods of modulating demethylation in a cell or in a subject, either generally or with respect to one or more specific target genes. Demethylation can be modulated to control a variety of cellular functions, including without limitation: differentiation; proliferation; apoptosis; tumorigenesis, leukemogenesis or other oncogenic transformation events; hair loss; or sexual differentiation. For example, in particular embodiments, the invention provides a method of treating a disease regulated by histone methylation and/or demethylation in a subject in need thereof by modulating the activity of a demethylase comprising a JmjC domain (e.g., a histone demethylase such as a JHDM protein(s)).
In an additional embodiment is a method for treating cancer in subject comprising administering a composition comprising a compound of Formula (I) or (III), or a pharmaceutically acceptable salt thereof.
In a further embodiment is the method for treating cancer in a subject wherein the cancer is selected from prostate cancer, breast cancer, bladder cancer, lung cancer or melanoma.
In an additional embodiment is a method for inhibiting the growth of a tumor comprising administering a composition comprising a compound of Formula (I) or (III), or a pharmaceutically acceptable salt thereof, wherein the tumor is characterized by a loss of retinoblastoma gene (RB1) function.
In an additional embodiment is a method for inhibiting the growth of a tumor comprising administering a composition comprising a compound of Formula (I) or (III), or a pharmaceutically acceptable salt thereof, wherein the tumor is characterized by a loss of multiple endocrine neoplasia type 1 gene (Men1) function.
Other embodiments and uses will be apparent to one skilled in the art in light of the present disclosures. The following examples are provided merely as illustrative of various embodiments and shall not be construed to limit the invention in any way.
EXAMPLES
I. Chemical Synthesis
Unless otherwise noted, reagents and solvents were used as received from commercial suppliers. Anhydrous solvents and oven-dried glassware were used for synthetic transformations sensitive to moisture and/or oxygen. Yields were not optimized. Reaction times are approximate and were not optimized. Column chromatography and thin layer chromatography (TLC) were performed on silica gel unless otherwise noted. Spectra are given in ppm (δ) and coupling constants, J are reported in Hertz. For proton spectra the solvent peak was used as the reference peak.
Example 1
2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid
A: 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




To a solution of 2-chloro-4-pyridinenitrile (300 mg, 2.16 mmol) in toluene (10 mL) was added N-methyl-4-(tributylstannyl)imidazole (964 mg, 2.6 mmol), followed by tetrakistriphenylphosphine palladium (0) (150 mg, 0.13 mmol). The reaction mixture was heated at 120° C. in a microwave initiator for 1 hr. The mixture was cooled down to r.t, solid filtered and dried to give 250 mg of 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile as a white solid. Filtrate was purified by flash column chromatography (CH2Cl2/MeOH=20/1) to give additional 100 mg of the product (total 350 mg, 88%). 1H NMR (400 MHz, DMSO-d6): δ 3.73 (3H, s), 7.59 (1H, d, J=4.8 Hz), 7.82 (1H, s), 8.09 (1H, s), 8.72 (1H, d, J=5 Hz). [M+H] Calc'd for C10H8N4, 185. Found, 185.
B: 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid




A solution of 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (50 mg, 0.3 mmol) in EtOH (2 mL) was treated with 10N NaOH (0.5 ml) and stirred at 90° C. for 2 hrs. The reaction mixture was purified by prep-HPLC to afford the title compound (22 mg, 40%) as light pink solid. 1H NMR (400 MHz, DMSO-d6): δ 3.72 (3H, s), 7.57 (1H, d, J=5 Hz), 7.72 (1H, s), 7.76 (1H, s), 8.28 (1H, s), 8.63 (1H, d, J=4.9 Hz). [M+H] Calc'd for C10H9N3O2, 204. Found, 204.
Example 2
2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid
A: 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




To a solution of 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (100 mg, 0.54 mmol) in dichloromethane (5 mL) was added N-bromosuccinimide (102 mg, 0.57 mmol). The reaction mixture was stirred at r.t. for 3 hrs. It was then purified by flash column chromatography (EtOAc/Hexane) to afford 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (140 mg, quantitative yield) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 3.67 (3H, s), 7.70 (1H, d, J=4.8 Hz), 8.04 (1H, s), 8.19 (1H, s), 8.81 (1H, d, J=4.2 Hz). [M+H] Calc'd for C10H7BrN4, 264. Found, 263, 265.
B. 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 28% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.66 (3H, s), 7.65 (1H, dd, J=1.4 Hz and 4.9 Hz), 8.01 (1H, s), 8.37 (1H, s), 8.72 (1H, d, J=4.9 Hz). [M+H] Calc'd for C10H8BrN3O2, 283. Found, 282, 284.
Example 3
2-[5-(3-hydroxy-4-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(3-hydroxy-4-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




To a microwave vessel was added 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (79 mg, 0.3 mmol), 3-hydroxy-4-methylphenyl boronic acid (55 mg, 0.36 mmol), PdCl2(dppf) (22 mg, 0.03 mmol), 2M Na2CO3 (0.3 mL, 0.6 mmol) in 2 mL dioxane. The reaction mixture was heated in a microwave oven at 120° C. for 1 hr. It was then purified by ISCO flash column (MeOH/DCM=0-5%) to give 60 mg product (69%). 1H NMR (400 MHz, DMSO-d6): δ 2.11 (3H, s), 3.46 (3H, s), 6.71 (1H, d, J=7.6 Hz), 6.75 (1H, s), 7.12 (1H, d, J=7.7 Hz), 7.52 (1H, d, J=4.9 Hz), 7.85 (1H, s), 8.06 (1H, s), 8.50 (1H, d, J=5 Hz), 9.36 (1H, s). [M+H] Calc'd for C17H14N4O, 291. Found, 291.
B. 2-[5-(3-hydroxy-4-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 28% yield from 2-[5-(3-hydroxy-4-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.11 (3H, s), 3.44 (3H, s), 6.67 (1H, d, J=7.4 Hz), 6.71 (1H, s), 7.07 (1H, d, J=7.7 Hz), 7.48 (1H, s), 8.06 (1H, s), 8.11 (1H, s), 8.43 (1H, d, J=3.3 Hz), 9.33 (1H, s). [M+H] Calc'd for C17H15N3O3, 310. Found, 310.
Example 4
2-[1-methyl-5-(4-methylphenyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-methyl-5-(4-methylphenyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 54% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and p-tolylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H14N4, 275. Found, 275.
B. 2-[1-methyl-5-(4-methylphenyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield (two steps) from 2-[1-methyl-5-(4-methylphenyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.30 (3H, s), 3.40 (3H, s), 7.16-7.24 (4H, m), 7.41 (1H, d, J=4.9 Hz), 7.76 (1H, s), 8.21 (1H, s), 8.28 (1H, d, J=4.8 Hz). [M+H] Calc'd for C17H15N3O2, 294. Found, 294.
Example 5
2-[5-(4-ethylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-ethylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 90% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-ethylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H16N4, 289. Found, 289.
B. 2-[5-(4-ethylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 25% yield (two steps) from 2-[5-(4-ethylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.17 (3H, t, J=7.6 Hz), 2.62 (2H, q, J=7.6 Hz), 3.41 (3H, s), 7.19-7.27 (4H, m), 7.41 (1H, d, J=4.9 Hz), 7.77 (1H, s), 8.21 (1H, s), 8.31 (1H, d, J=4.9 Hz). [M+H] Calc'd for C18H17N3O2, 308. Found, 308.
Example 6
2-{1-methyl-5-[4-(trifluoromethyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-methyl-5-[4-(trifluoromethyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared in 93% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(trifluoromethyl)phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H11F3N4, 329. Found, 329.
B. 2-{1-methyl-5-[4-(trifluoromethyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 20% yield (two steps) from 2-{1-methyl-5-[4-(trifluoromethyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.46 (3H, s), 7.60 (2H, d&s, J=8 Hz), 7.72 (2H, d&s, J=8.2 Hz), 7.86 (1H, s), 8.29 (1H, s), 8.31 (1H, d, J=5.0 Hz). [M+H] Calc'd for C17H12N3F3O2, 348. Found, 348.
Example 7
2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-cyclopropylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C19H16N4, 301. Found, 301.
B. 2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 24% yield (two steps) from 2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.75 (2H, m), 1.02 (2H, m), 1.99 (1H, m), 3.52 (3H, s), 7.17 (2H, d&s, J=7.8 Hz), 7.31 (2H, d&s, J=8.1 Hz), 7.55 (1H, d, J=3.8 Hz), 8.13 (2H, s), 8.50 (1H, s). [M+H] Calc'd for C19H17N3O2, 320. Found, 320.
Example 8
methyl 2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylate




To a mixture of 2-[5-(4-cyclopropylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid (26 mg, 0.08 mmol, Example 7) in MeOH (5 mL) was added 3 drops of concentrated sulfuric acid. The reaction mixture was heated to reflux for 1 hr. It was then concentrated, separated between water and ethyl acetate. Organic layer dried and concentrated to give the title compound as light pink solid (25 mg, 94%). 1H NMR (400 MHz, DMSO-d6): δ 0.77 (2H, m), 1.02 (2H, m), 2.02 (1H, m), 3.54 (3H, s), 3.85 (3H, s), 7.22 (2H, d&s, J=7.8 Hz), 7.36 (2H, d&s, J=8.1 Hz), 7.64 (1H, d, J=4.4 Hz), 7.98 (1H, s), 8.51 (1H, s), 8.63 (1H, s). [M+H] Calc'd for C20H19N3O2, 334. Found, 334.
Example 9
2-[5-(4-tert-butylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-tert-butylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-tert-butylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H20N4, 317. Found, 317.
B. 2-[5-(4-tert-butylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield (two steps) from 2-[5-(4-tert-butylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.33 (9H, s), 3.48 (3H, s), 7.34 (2H, d&s, J=8.1 Hz), 7.44 (2H, d&s, J=8.1 Hz), 7.48 (1H, d, J=5.2 Hz), 7.82 (1H, s), 8.26 (2H, s). [M+H] Calc'd for C20H21N3O2, 336. Found, 336.
Example 10
2-{1-methyl-5-[3-(methylcarbamoyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 3-[4-(4-cyanopyridin-2-yl)-1-methyl-1H-imidazol-5-yl]-N-methylbenzamide




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 3-(N-methylaminocarbonyl)phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H15N5O, 318. Found, 318.
B. 2-{1-methyl-5-[3-(methylcarbamoyl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 26% yield (two steps) from 3-[4-(4-cyanopyridin-2-yl)-1-methyl-1H-imidazol-5-yl]-N-methylbenzamide according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.78 (3H, d, J=4.5 Hz), 3.67 (3H, s), 7.66 (3H, m), 7.86 (1H, s), 7.99 (1H, s), 8.04 (1H, d, J=7.1 Hz), 8.60 (1H, s), 8.66 (1H, s). [M+H] Calc'd for C18H16N4O3, 337. Found, 337.
Example 11
2-{5-[3-(hydroxymethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{5-[3-(hydroxymethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 3-hydroxymethylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H14N4O, 291. Found, 291.
B. 2-{5-[3-(hydroxymethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 32% yield (two steps) from 2-{5-[3-(hydroxymethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.70 (3H, s), 4.58 (2H, s), 7.14-7.51 (4H, m), 7.72 (1H, s), 7.76 (1H, d, J=4.4 Hz), 8.77 (1H, d, J=4.1 Hz), 9.17 (1H, s). [M+H] Calc'd for C17H15N3O3, 310. Found, 310.
Example 12
2-[5-(4-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-methoxyphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H14N4O, 291. Found, 291.
B. 2-[5-(4-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 24% yield (two steps) from 2-[5-(4-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.59 (3H, s), 3.90 (3H, s), 7.15 (2H, d&s, J=8.5 Hz), 7.49 (2H, d&s, J=8.6 Hz), 7.74 (2H, d, J=4.1 Hz), 8.77 (1H, s),
Example 13
2-{1-methyl-5-[4-(trifluoromethoxy)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-methyl-5-[4-(trifluoromethoxy)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(trifluoromethoxy)phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H11F3N4O, 345. Found, 345.
B. 2-{1-methyl-5-[4-(trifluoromethoxy)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 24% yield (two steps) from 2-{1-methyl-5-[4-(trifluoromethoxy)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.51 (3H, s), 7.42 (2H, d&s, J=8.5 Hz), 7.51 (1H, d, J=3.9 Hz), 7.58 (2H, d &s, J=8.4 Hz), 7.90 (1H, s), 8.33 (1H, s), 8.38 (1H, d, J=4.5 Hz). [M+H] Calc'd for C17H12F3N3O3, 364. Found, 364.
Example 14
2-[5-(4-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-ethoxyphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H16N4O, 305. Found, 305.
B. 2-[5-(4-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 34% yield (two steps) from 2-[5-(4-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.38 (3H, t, J=6.9 Hz), 3.59 (3H, s), 4.12 (2H, q, J=6.9 Hz), 7.12 (2H, d&s, J=8.3 Hz), 7.47 (2H, d&s, J=8.2 Hz), 7.73 (2H, d, J=4.3 Hz), 8.76 (1H, s), 9.01 (1H, s). [M+H] Calc'd for C18H17N3O3, 324. Found, 324.
Example 15
2-{1-methyl-5-[4-(1H-pyrazol-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-methyl-5-[4-(1H-pyrazol-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-pyrazol-1-yl-phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C19H14N6, 327. Found, 327.
B. 2-{1-methyl-5-[4-(1H-pyrazol-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 31% yield (two steps) from 2-{1-methyl-5-[4-(1H-pyrazol-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.53 (3H, s), 6.58 (1H, t, J=2.3 Hz), 7.46 (1H, d, J=1.5 Hz), 7.53 (2H, d&s, J=8.6 Hz), 7.78 (1H, s), 7.86 (1H, s), 7.89 (2H, d&s, J=8.6 Hz), 8.30 (2H, s), 8.58 (1H, d, J=2.4 Hz). [M+H] Calc'd for C19H15N5O2, 346. Found, 346.
Example 16
2-{5-[4-(cyclopropylmethoxy)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{5-[4-(cyclopropylmethoxy)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(cyclopropylmethoxy)phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H18N4O, 331. Found, 331.
B. 2-{5-[4-(cyclopropylmethoxy)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 31% yield (two steps) from 2-{5-[4-(cyclopropylmethoxy)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.34 (2H, d, J=5.0 Hz), 0.58 (2H, d, J=5.8 Hz), 1.22 (1H, m), 3.46 (3H, s), 3.86 (2H, d, J=7.0 Hz), 6.95 (2H, d&s, J=8.6 Hz), 7.30 (2H, d&s, J=8.7 Hz), 7.45 (1H, s), 7.80 (1H, s), 8.25 (1H, s), 8.31 (1H, s). [M+H] Calc'd for C20H19N3O3, 350. Found, 350.
Example 17
2-(5-{4-[1-(hydroxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid
A. 2-(5-{4-[1-(hydroxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(1-(hydroxymethyl)cyclopropyl)phenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H18N4O, 331. Found, 331.
B. 2-(5-{4-[1-(hydroxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 27% yield (two steps) from 2-(5-{4-[1-(hydroxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.80 (2H, m), 0.88 (2H, m), 3.42 (3H, s), 3.55 (2H, s), 7.31 (4H, m), 7.44 (1H, d&d, J=1.2 Hz and 4.9 Hz), 7.81 (1H, s), 8.24 (1H, s), 8.28 (1H, d, J=5.0 Hz). [M+H] Calc'd for C20H19N3O3, 350. Found, 350.
Example 18
2-{1-methyl-5-[4-(pyrrolidin-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-methyl-5-[4-(pyrrolidin-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-pyrrolidinophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H19N5, 330. Found, 330.
B. 2-{1-methyl-5-[4-(pyrrolidin-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 50% yield (two steps) from 2-{1-methyl-5-[4-(pyrrolidin-1-yl)phenyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.97 (4H, m), 3.29 (4H, m), 3.45 (3H, s), 6.56 (2H, d&s, J=8.5 Hz), 7.18 (2H, d&s, J=8.5 Hz), 7.44 (1H, d, J=4.9 Hz), 7.77 (1H, s), 8.22 (1H, s), 8.34 (1H, d, J=4.9 Hz). [M+H] Calc'd for C20H20N4O2, 349. Found, 349.
Example 19
2-[5-(4-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chlorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H11ClN4, 296. Found, 295, 297.
B. 2-[5-(4-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 30% yield (two steps) from 2-[5-(4-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.49 (3H, s), 7.45 (5H, m), 7.85 (1H, s), 8.25 (1H, d, J=4.8 Hz), 8.27 (1H, s). [M+H] Calc'd for C16H12ClN3O2, 315. Found, 314, 316.
Example 20
2-[5-(3-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(3-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 3-chlorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H11ClN4, 296. Found, 295, 297.
B. 2-[5-(3-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 26% yield (two steps) from 2-[5-(3-chlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.51 (3H, s), 7.37 (1H, m), 7.44 (3H, m), 7.51 (1H, s), 7.86 (1H, s), 8.24 (1H, d, J=4.8 Hz), 8.28 (1H, s). [M+H] Calc'd for C16H12ClN3O2, 315. Found, 314, 316.
Example 21
2-[5-(4-ethynylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-ethynylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(dihydroxyborophenyl)acetylene according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H12N4, 285. Found, 285.
B. 2-[5-(4-ethynylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 6% yield (two steps) from 2-[5-(4-ethynylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.42 (3H, s), 3.70 (1H, s), 4.25 (1H, s), 7.41 (2H, d&s, J=8.3 Hz), 7.50 (2H, d&s, J=8.0 Hz), 7.65 (1H, m), 7.83 (1H, s), 8.21 (2H, s). [M+H] Calc'd for C18H13N3O2, 304. Found, 304.
Example 22
2-[5-(1H-indol-6-yl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(1H-indol-6-yl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 6-indolylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H13N5, 300. Found, 300.
B. 2-[5-(1H-indol-6-yl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 20% yield (two steps) from 2-[5-(1H-indol-6-yl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.42 (3H, s), 6.47 (1H, s), 6.97 (1H, dd, J=1.3 Hz and 8.2 Hz), 7.41 (3H, m), 7.56 (1H, d, J=8.1 Hz), 7.81 (1H, s), 8.21 (1H, s), 8.24 (1H, d, J=4.4 Hz). [M+H] Calc'd for C18H14N4O2, 319. Found, 319.
Example 23
2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H11FN4, 279. Found, 279.
B. 2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 23% yield (two steps) from 2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.48 (3H, s), 7.25 (2H, m), 7.47 (3H, m), 7.84 (1H, s), 8.26 (2H, m). [M+H] Calc'd for C16H12FN3O2, 298. Found, 298.
Example 24
2-[5-(3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H11FN4, 279. Found, 279.
B. 2-[5-(3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 34% yield (two steps) from 2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.51 (3H, s), 7.23-7.31 (3H, m), 7.46-7.49 (2H, m), 7.87 (1H, s), 8.29-8.32 (2H, m). [M+H] Calc'd for C16H12FN3O2, 298. Found, 298.
Example 25
2-(5-{4-[1-(methoxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid
A. 2-(5-{4-[1-(methoxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




To a solution of 2-(5-{4-[1-(hydroxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (30 mg, 0.09 mmol; Example 17, part A) in anhydrous DMF (2 mL) at 0° C. was added 60% NaH (6 mg, 0.136 mmol). After stirring for 10 minutes, MeI (10 μL, 0.136 mml) was added. The reaction mixture was warmed up to r.t. and stirred for 3 hr. It was then purified by ISCO flash column chromatography (MeOH/DCM=0-5%) to give the title product which was used for next step. [M+H] Calc'd for C21H20N4O, 345. Found, 345.
B. 2-(5-{4-[1-(methoxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 15% yield (two steps) from 2-(5-{4-[1-(methoxymethyl)cyclopropyl]phenyl}-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.90 (4H, s), 3.26 (3H, s), 3.42 (3H, s), 3.52 (2H, s), 7.29 (4H, m), 7.41 (1H, d, J=5.2 Hz), 7.78 (1H, s), 8.18 (2H, d&s, J=5.9 Hz), 8.38 (1H, s). [M+H] Calc'd for C21H21N3O3, 364. Found, 364.
Example 26
2-[5-(4-chloro-2-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-chloro-2-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-2-methylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H13ClN4, 310. Found, 309, 311.
B. 2-[5-(4-chloro-2-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 3% yield (two steps) from 2-[5-(4-chloro-2-methylphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. [M+H] Calc'd for C17H14ClN3O2, 329. Found, 328, 330.
Example 27
2-{5-[4-chloro-2-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{5-[4-chloro-2-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-2-trifluoromethylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H10ClF3N4, 364. Found, 363, 365.
B. 2-{5-[4-chloro-2-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 2% yield (two steps) from 2-{5-[4-chloro-2-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. [M+H] Calc'd for C17H11ClF3N3O2, 383. Found, 382, 384.
Example 28
2-[5-(3,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(3,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 3,4-dichlorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H10Cl2N4, 330. Found, 329, 331.
B. 2-[5-(3,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 12% yield (two steps) from 2-[5-(3,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.53 (3H, s), 7.43 (1H, dd, J=2.0 Hz and 8.3 Hz), 7.52 (1H, dd, J=1.8 Hz and 5.0 Hz), 7.69 (1H, d, J=8.3 Hz), 7.76 (1H, d, J=2.0 Hz), 7.90 (1H, s), 8.35 (1H, s), 8.38 (1H, d, J=5.0 Hz). [M+H] Calc'd for C16H11Cl2N3O2, 349. Found, 348, 350.
Example 29
2-[5-(4-chloro-3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-chloro-3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H10ClFN4, 314. Found, 313, 315.
B. 2-[5-(4-chloro-3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 3% yield (two steps) from 2-[5-(4-chloro-3-fluorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.57 (3H, s), 7.27 (1H, dd, J=8.7 Hz), 7.42 (1H, dd, J=4.2 Hz), 7.53 (1H, dd, J=8.8 Hz), 7.59 (1H, d, J=8.2 Hz), 7.85 (1H, s), 8.20 (1H, m), 8.28 (1H, s). [M+H] Calc'd for C16H11ClFN3O2, 333. Found, 332, 334.
Example 30
2-[5-(4-chloro-3-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-chloro-3-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-3-methoxyphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H13ClN4O, 326. Found, 325, 327.
B. 2-[5-(4-chloro-3-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 8% yield (two steps) from 2-[5-(4-chloro-3-methoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.53 (3H, s), 3.82 (3H, s), 7.00 (1H, dd, J=1.7 Hz and 8.3 Hz), 7.25 (1H, dd, J=1.8 Hz), 7.45 (1H, d, J=8.2 Hz), 7.50 (1H, d, J=4.1 Hz), 7.87 (1H, s), 8.32 (1H, s), 8.39 (1H, d, J=4.4 Hz). [M+H] Calc'd for C17H14ClN3O3, 345. Found, 344, 346.
Example 31
2-{5-[4-chloro-3-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{5-[4-chloro-3-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-3-trifluoromethylphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C17H10ClF3N4, 364. Found, 363, 365.
B. 2-{5-[4-chloro-3-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 5% yield (two steps) from 2-{5-[4-chloro-3-(trifluoromethyl)phenyl]-1-methyl-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.55 (3H, s), 7.49 (1H, d, J=4.3 Hz), 7.78 (2H, s), 7.91 (1H, s), 7.96 (1H, s), 8.26 (1H, d, J=4.7 Hz), 8.35 (1H, s). [M+H] Calc'd for C17H11ClF3N3O2, 383. Found, 382, 384.
Example 32
2-[5-(4-chloro-2-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(4-chloro-2-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-2-ethoxyphenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H15ClN4O, 340. Found, 339, 341.
B. 2-[5-(4-chloro-2-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 2% yield (two steps) from 2-[5-(4-chloro-2-ethoxyphenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.96 (3H, t, J=6.9 Hz), 3.48 (3H, s), 3.86 (1H, m), 4.02 (1H, m), 7.04 (1H, dd, J=2.0 Hz and 8.1 Hz), 7.14 (1H, d, J=1.8 Hz), 7.27 (1H, d, J=8.2 Hz), 7.44 (1H, d, J=5.6 Hz), 7.84 (1H, s), 8.28 (2H, s). [M+H] Calc'd for C18H16ClN3O3, 359. Found, 358, 360.
Example 33
2-[5-(2,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-(2,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 2,4-dichlorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H10Cl2N4, 330. Found, 329, 331.
B. 2-[5-(2,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 2% yield (two steps) from 2-[5-(2,4-dichlorophenyl)-1-methyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.41 (3H, s), 7.44 (1H, m), 7.49 (1H, d, J=7.7 Hz), 7.51 (1H, dd, J=1.8 Hz and 8.0 Hz), 7.76 (1H, d, J=1.6 Hz), 7.90 (1H, s), 8.26 (1H, m), 8.33 (1H, s). [M+H] Calc'd for C16H11Cl2N3O2, 349. Found, 348, 350.
Example 34
2-(1-methyl-5-{4-[1-(trifluoromethyl)cyclopropyl]phenyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid
4,4,5,5-tetramethyl-2-[4-[1-(trifluoromethyl)cyclopropyl]phenyl]-1,3,2-dioxaborolane




To a solution of 1-bromo-4-(1-trifluoromethyl-cyclopropyl)benzene (265 mg, 1 mmol) in 10 mL of dioxane, was added bis(pinacolato)diboron (305 mg, 1.2 mmol), PdCl2(dppf) (40 mg, 0.05 mmol) and potassium acetate (294 mg, 3 mmol). The reaction mixture was degassed and heated at 90° C. under nitrogen for 18 hrs. The crude mixture was purified by ISCO flash column chromatography (EtOAc/Hexane=0-50%) to give the title compound as white solid (250 mg, 80%). 1H NMR (400 MHz, DMSO-d6): δ 1.03 (4H, m), 1.31 (12H, s), 7.48 (2H, d, J=8.0 Hz), 7.79 (2H, d, J=8.1 Hz).
A. 2-(1-methyl-5-{4-[1-(trifluoromethyl)cyclopropyl]phenyl}-1H-imidazol-4-yl)pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4,4,5,5-tetramethyl-2-[4-[1-(trifluoromethyl)cyclopropyl]phenyl]-1,3,2-dioxaborolane according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H15F3N4, 369. Found, 369.
B. 2-(1-methyl-5-{4-[1-(trifluoromethyl)cyclopropyl]phenyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 34% yield (two steps) from 2-(1-methyl-5-{4-[1-(trifluoromethyl)cyclopropyl]phenyl}-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.19 (2H, m), 1.38 (2H, m), 3.51 (3H, s), 7.44-7.51 (5H, m), 7.85 (1H, s), 8.25 (1H, s), 8.27 (1H, s). [M+H] Calc'd for C20H16F3N3O2, 388. Found, 388.
Example 35
2-[5-(4-chloro-3-fluorophenyl)-1-propyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid
2-(1H-imidazol-4-yl)pyridine-4-carbonitrile
Step 1: 2-[1-(triphenylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 77% yield from 2-chloro-4-pyridinenitrile and 4-(tributylstannyl)-1-tritylimidazole according to the procedure for Example 1, part A. 1H NMR (400 MHz, DMSO-d6): δ 7.17 (5H, m), 7.40-7.47 (10H, m), 7.49 (1H, d, J=1.2 Hz), 7.62 (1H, d, J=1.3 Hz), 7.65 (1H, dd, J=1.5 Hz and 5.0 Hz), 8.13 (1H, s), 8.67 (1H, d, 5.0 Hz).
Step 2: 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile




A solution of 2-[1-(triphenylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile (510 mg, 1.2 mmol) in acetic acid (10 ml) was heated at 90° C. for 18 hr. Reaction mixture was purified by ISCO flash column chromatography (EtOAc/Hexane=0-100%) to get 130 mg of product. Some starting material was recovered and heated in acetic acid again overnight at 90° C. Additional product was obtained to give total 160 mg product as light yellow solid (78%). 1H NMR (400 MHz, DMSO-d6): δ 7.62 (1H, dd, J=1.2 Hz and 4.9 Hz), 7.81 (2H, s), 8.13 (1H, s), 8.73 (1H, d, J=4.8 Hz). [M+H] Calc'd for C9H6N4, 171. Found, 171.
A. 2-(1-propyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




A solution of 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (90 mg, 0.53 mmol) in anhydrous DMF (2 mL) was cooled in an ice-water bath. Sodium hydride (60%, 32 mg, 0.8 mmol) was added carefully at 0° C. The reaction mixture was stirred for 10 minutes, after which 1-bromopropane (73 μL, 0.8 mmol) was added. The reaction mixture was warmed up to r.t. and stirred for 1 hr and it was then purified by ISCO flash column (MeOH/DCM=0-5%). 80 mg title compound was obtained as white solid (71%). [M+H] Calc'd for C12H12N4, 213. Found, 213.
B. 2-(5-bromo-1-propyl-1H-imidazol-4-yl)pyridine-4-carbonitrile




The title compound was prepared in 62% yield from 2-(1-propyl-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure in Example 2. 1H NMR (400 MHz, DMSO-d6): δ 0.88 (3H, t, J=7.4 Hz), 1.76 (2H, q, J=7.3 Hz and 7.2 Hz), 4.02 (2H, t, J=7.1 Hz), 7.71 (1H, dd, J=1.4 Hz and 5.0 Hz), 8.08 (1H, s), 8.20 (1H, s), 8.81 (1H, d, J=5.0 Hz). [M+H] Calc'd for C12H11BrN4, 292. Found, 291, 293.
C. 2-[5-(4-chloro-3-fluorophenyl)-1-propyl-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-propyl-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H14ClFN4, 342. Found, 341, 343.
D. 2-[5-(4-chloro-3-fluorophenyl)-1-propyl-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 37% yield (two steps) from 2-[5-(4-chloro-3-fluorophenyl)-1-propyl-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.72 (3H, t, J=7.3 Hz), 1.48 (2H, q, J=7.4 Hz and 7.2 Hz), 3.85 (2H, t, J=7.1 Hz), 7.26 (1H, dd, J=1.3 Hz and 8.2 Hz), 7.46 (1H, dd, J=1.2 Hz and 6.2 Hz), 7.52 (1H, dd, J=1.7 Hz and 10.2 Hz), 7.64 (1H, t, J=8.1 Hz), 7.92 (1H, s), 8.24 (1H, d, J=4.8 Hz), 8.31 (1H, s). [M+H] Calc'd for C18H15ClFN3O2, 361. Found, 360, 362.
Example 36
2-[5-(4-chloro-3-fluorophenyl)-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 1-bromo-3-methoxypropane according to the procedure for the preparation of Example 35, part A. [M+H] Calc'd for C13H14N4O, 243. Found, 243.
B. 2-[5-bromo-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 83% yield (two steps) from 2-[1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure in Example 2. [M+H] Calc'd for C13H13BrN4O, 322. Found, 321, 323.
C. 2-[5-(4-chloro-3-fluorophenyl)-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-[5-bromo-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile and 4-chloro3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C19H16ClFN4O, 372. Found, 371, 373.
D. 2-[5-(4-chloro-3-fluorophenyl)-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 15% yield (two steps) from 2-[5-(4-chloro-3-fluorophenyl)-1-(3-methoxypropyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.73 (2H, t, J=7.0 Hz), 3.16 (3H, s), 3.21 (2H, t, J=7.2 Hz), 3.93 (2H, t, J=7.2 Hz), 7.25 (1H, dd, J=8.2 Hz), 7.44 (1H, d, J=4.4 Hz), 7.50 (1H, dd, J=1.4 Hz and 9.0 Hz), 7.63 (1H, t, J=8.1 Hz), 7.89 (1H, s), 8.18 (1H, d, J=4.9 Hz), 8.28 (1H, s). [M+H] Calc'd for C19H17ClFN3O3, 391. Found, 390, 392.
Example 37
2-[5-(4-chloro-3-fluorophenyl)-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 2-bromo-ethylmethylether according to the procedure for the preparation of Example 35, part A. [M+H] Calc'd for C12H12N4O, 229. Found, 229.
B. 2-[5-bromo-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 54% yield (two steps) from 2-[1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure in Example 2. [M+H] Calc'd for C12H11BrN4O, 308. Found, 307, 309.
C. 2-[5-(4-chloro-3-fluorophenyl)-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-[5-bromo-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile and 4-chloro-3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H14ClFN4O, 358. Found, 357, 359.
D. 2-[5-(4-chloro-3-fluorophenyl)-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 42% yield (two steps) from 2-[5-(4-chloro-3-fluorophenyl)-1-(2-methoxyethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.19 (3H, s), 3.43 (2H, t, J=5.2 Hz), 4.01 (2H, t, J=5.2 Hz), 7.24 (1H, dd, J=8.0 Hz), 7.41 (1H, d, J=4.2 Hz), 7.50 (1H, dd, J=1.6 Hz and 10.3 Hz), 7.62 (1H, t, J=8.2 Hz), 7.88 (1H, s), 8.15 (1H, d, J=4.8 Hz), 8.24 (1H, s). [M+H] Calc'd for C18H15ClFN3O3, 377. Found, 376, 378.
Example 38
2-[1-[2-[(4-fluorophenyl)methyl-methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 23% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate and 4-fluoro-N-methylbenzylamine according to the procedure for the preparation of Example 58. 1H NMR (400 MHz, DMSO): δ 2.18 (3H, s), 2.69 (2H, t, J=6 Hz), 3.51 (2H, s), 4.00 (1H, t, J=5.7 Hz), 4.15 (1H, t, J=5.9 Hz), 7.03 (2H, t, J=8.9 Hz), 7.20 (2H, dd, J=8.7 Hz and 2.8 Hz), 7.52 (1H, s), 7.72 (1H, d, J=1.7 Hz), 7.78 (1H, s), 8.26 (1H, s), 8.46 (1H, d, J=4.3 Hz). [M+H] Calc'd for C19H19FN4O2, 355. Found, 355.
Example 39
2-{5-(4-chloro-3-fluorophenyl)-1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-(5-bromo-1H-imidazol-4-yl)pyridine-4-carbonitrile




The title compound was prepared in 91% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure in Example 2. [M+H] Calc'd for C9H5BrN4, 250. Found, 249, 251.
B. 2-[5-(4-chloro-3-fluorophenyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-3-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C15H8ClFN4, 300. Found, 299, 301.
C. 2-{5-(4-chloro-3-fluorophenyl)-1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-[5-(4-chloro-3-fluorophenyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile (see above) and dimethylaminomethyl bromide hydrogen bromide salt according to the procedure for the preparation of Example 35, part A. [M+H] Calc'd for C19H17ClFN5, 371. Found, 370, 372.
D. 2-{5-(4-chloro-3-fluorophenyl)-1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 6% yield (two steps) from 2-{5-(4-chloro-3-fluorophenyl)-1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.03 (6H, s), 2.33 (2H, t, J=6.0 Hz), 3.93 (2H, t, J=6.3 Hz), 7.24 (1H, dd, J=10.2 Hz), 7.37 (1H, dd, J=1.5 Hz and 5.02 Hz), 7.51 (1H, dd, J=1.9 Hz and 10.6 Hz), 7.62 (1H, t, J=8.1 Hz), 7.89 (1H, s), 8.11 (1H, d, J=4.9 Hz), 8.21 (1H, s). [M+H] Calc'd for C19H18ClFN4O2, 390. Found, 389, 391.
Example 40
2-{1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and dimethylaminomethyl bromide hydrogen bromide salt according to the procedure for the preparation of Example 35, part A. [M+H] Calc'd for C13H15N5, 242. Found, 242.
B. 2-{1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 45% yield (two steps) from 2-{1-[2-(dimethylamino)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.20 (6H, s), 2.58 (2H, t, J=6.2 Hz), 4.08 (2H, t, J=6.2 Hz), 7.44 (1H, dd, J=1.4 Hz and 4.8 Hz), 7.69 (2H, 2s), 8.20 (1H, s), 8.36 (1H, d, J=4.9 Hz). [M+H] Calc'd for C13H16N4O2, 261. Found, 261.
Example 41
2-(1-propyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared from 2-(1-propyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (Example 35A) according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.85 (3H, t, J=7.3 Hz), 1.77 (2H, q, J=7.2 Hz), 3.97 (2H, t, J=7.0 Hz), 7.53 (1H, d, J=4.6 Hz), 7.73 (2H, 2s), 8.27 (1H, s), 8.47 (1H, d, J=4.4 Hz). [M+H] Calc'd for C12H13N3O2, 232. Found, 232.
Example 42
2-{1-[3-(dimethylamino)propyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[3-(dimethylamino)propyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and (3-bromopropyl)dimethylamine hydrogen bromide according to the procedure for the preparation of Example 35, part A. [M+H] Calc'd for C14H17N5, 256. Found, 256.
B. 2-{1-[3-(dimethylamino)propyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 21% yield (two steps) from 2-{1-[3-(dimethylamino)propyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.90 (2H, m), 2.12 (6H, s), 2.16 (2H, t, J=6.9 Hz), 4.02 (2H, t, J=7.0 Hz), 7.45 (1H, dd, J=1.6 Hz and 4.9 Hz), 7.68 (2H, s), 8.21 (1H, s), 8.37 (1H, d, J=4.8 Hz). [M+H] Calc'd for C14H18N4O2, 275. Found, 275.
Example 43
2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




A mixture of 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (20 mg, 0.12 mmol), 1-(2-chloroethyl)pyrrolidine hydrogen chloride (34 mg, 0.2 mmol) and cesium carbonate (130 mg, 0.4 mmol) in 2 mL DMF was heated at 90° C. for 2 hr. The reaction mixture was purified by ISCO flash column chromatography (MeOH/DCM=0-100%). [M+H] Calc'd for C15H17N5, 268. Found, 268.
B. 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 30% yield (two steps) from 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.66 (4H, m), 2.50 (4H, m), 2.78 (2H, t, J=6.3 Hz), 4.11 (2H, t, J=6.3 Hz), 7.45 (1H, dd, J=1.4 Hz and 4.9 Hz), 7.70 (2H, s), 8.21 (1H, s), 8.37 (1H, d, J=4.9 Hz). [M+H] Calc'd for C15H18N4O2, 287. Found, 287.
Example 44
methyl 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylate
methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate
A. methyl 2-[1-(triphenylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylate




The title compound was prepared from methyl 2-chloropyridine-4-carboxylate and 4-(tributylstannyl)-1-tritylimidazole according to the procedure for Example 1. 1H NMR (400 MHz, DMSO-d6): δ 3.92 (3H, s), 7.16 (5H, m), 7.38-7.46 (11H, m), 7.60 (1H, d, J=1.3 Hz), 7.64 (1H, dd, J=1.6 Hz and 5.0 Hz), 8.32 (1H, s), 8.64 (1H, d, 5.0 Hz).
B. methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate




The title compound was prepared in 44% yield (two steps) from methyl 2-[1-(triphenylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylate according to the procedure for 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile in Example 35. [M+H] Calc'd for C10H9N3O2, 204. Found, 204.
C. methyl 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylate




A mixture of methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate (20 mg, 0.10 mmol), 1-(2-chloroethyl)pyrrolidine hydrogen chloride (34 mg, 0.2 mmol) and cesium carbonate (130 mg, 0.4 mmol) in 2 mL DMF was heated at 120° C. for 2 hr. The reaction mixture was purified by ISCO flash column chromatography (MeOH/DCM=0-100%). 1H NMR (400 MHz, DMSO-d6): δ 1.77 (4H, m), 2.67 (4H, m), 2.74 (2H, t, J=6.2 Hz), 3.92 (3H, s), 4.17 (2H, t, J=6.2 Hz), 7.62 (1H, dd, J=1.3 Hz and 5.0 Hz), 7.79 (1H, s), 7.87 (1H, s), 8.30 (1H, s), 8.69 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H20N4O2, 301. Found, 301.
Example 45
2-{1-[2-(morpholin-4-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(morpholin-4-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(2-chloroethyl)morpholine hydrogen chloride according to the procedure for the preparation of Example 43, part A. [M+H] Calc'd for C15H17N5O, 284. Found, 284.
B. 2-{1-[2-(morpholin-4-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 74% yield (two steps) from 2-{1-[2-(morpholin-4-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.66 (4H, m), 2.50 (4H, m), 2.78 (2H, t, J=6.3 Hz), 4.11 (2H, t, J=6.3 Hz), 7.55 (1H, dd, J=1.6 Hz and 5.0 Hz), 7.78 (1H, s), 7.85 (1H, s), 8.28 (1H, s), 8.58 (1H, d, J=5.0 Hz). [M+H] Calc'd for C15H18N4O3, 303. Found, 303.
Example 46
2-{1-[2-(1H-pyrazol-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(1H-pyrazol-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-(2-chloroethyl)-1H-pyrazole according to the procedure for the preparation of Example 43, part A. [M+H] Calc'd for C14H12N6, 265. Found, 265.
B. 2-{1-[2-(1H-pyrazol-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 47% yield (two steps) from 2-{1-[2-(1H-pyrazol-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 4.51 (4H, dd, J=5.7 Hz and 16.6 Hz), 6.19 (1H, s), 7.40 (1H, s), 7.48 (1H, d), 7.53 (d, 1H, J=2.3 Hz), 7.61 (1H, s), 7.95 (1H, s), 8.19 (1H, s), 8.27 (1H, d, J=2.5 Hz), 8.42 (1H, s), 8.57 (1H, d, J=5.0 Hz). [M+H] Calc'd for C14H13N5O2, 284. Found, 284.
Example 47
2-[1-(pyridin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(pyridin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 2-(chloroethyl)pyridine hydrogen chloride according to the procedure for the preparation of Example 43, part A. [M+H] Calc'd for C15H11N5, 262. Found, 262.
B. 2-[1-(pyridin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 60% yield (two steps) from 2-[1-(pyridin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 5.36 (2H, s), 7.29 (1H, d, J=7.8 Hz), 7.34 (1H, m), 7.49 (1H, d, J=4.8 Hz), 7.72 (1H, s), 7.82 (1H, dd, J=1.3 Hz and 7.7 Hz), 7.84 (1H, s), 8.25 (1H, s), 8.39 (1H, d, J=4.8 Hz), 8.57 (1H, dd, J=0.72 Hz and 4.8 Hz). [M+H] Calc'd for C15H12N4O2, 281. Found, 281.
Example 48
2-(1-{2-[2-(dimethylamino)ethoxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid
A. 2-{1-[2-(2-chloroethoxy)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and bis(2-chloroethyl)ether according to the procedure for the preparation of Example 43, part A. [M+H] Calc'd for C13H13ClN4O, 278. Found, 277, 279.
B. 2-(1-{2-[2-(dimethylamino)ethoxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carbonitrile




To a solution of 2-{1-[2-(2-chloroethoxy)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile obtained from part A in 2 mL of THF was added N,N-dimethylamine hydrogen chloride (121 mg, 1.5 mmol), potassium carbonate (276 mg, 2 mmol) and potassium iodide (66 mg, 0.4 mmol). The reaction mixture was stirred in a sealed tube at 90° C. for 18 hr. After which, it was purified by ISCO flash column chromatography (MeOH/DCM=0-100%). [M+H] Calc'd for C15H19N5O, 286. Found, 286.
C. 2-(1-{2-[2-(dimethylamino)ethoxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 20% yield (three steps) from 2-(1-{2-[2-(dimethylamino)ethoxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.16 (6H, s), 2.37 (2H, t, J=5.9 Hz), 3.48 (2H, t, J=5.9 Hz), 3.70 (2H, t, J=5.1 Hz), 4.16 (2H, t, J=5.2 Hz), 7.44 (1H, d, J=4.6 Hz), 7.68 (1H, s), 7.70 (1H, s), 8.20 (1H, s), 8.36 (1H, d, J=4.8 Hz). [M+H] Calc'd for C15H20N4O3, 305. Found, 305.
Example 49
2-[1-(1-methylpiperidin-4-yl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(1-methylpiperidin-4-yl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-chloro-1-methylpiperidine according to the procedure for the preparation of Example 43, part A. [M+H] Calc'd for C15H17N5, 268. Found, 268.
B. 2-[1-(1-methylpiperidin-4-yl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 14% yield (two steps) from 2-[1-(1-methylpiperidin-4-yl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.91-2.08 (4H, m), 2.20 (3H, s), 2.59 (2H, m), 2.85 (2H, m), 4.06 (1H, m), 7.44 (1H, dd, J=4.8 Hz), 7.73 (1H, s), 7.80 (1H, s), 8.20 (1H, s), 8.36 (1H, d, J=4.9 Hz). [M+H] Calc'd for C15H18N4O2, 287. Found, 287.
Example 50
2-{1-[(1-methylpiperidin-4-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[(1-methylpiperidin-4-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 4-bromomethyl-1-methylpiperidine hydrogen bromide according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C16H19N5, 282. Found, 282.
B. 2-{1-[(1-methylpiperidin-4-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 28% yield (two steps) from 2-{1-[(1-methylpiperidin-4-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.81 (2H, m), 1.92 (2H, m), 2.07 (2H, m), 2.21 (3H, s), 2.37 (1H, m), 2.54 (2H, m), 3.98 (2H, t, J=7.1 Hz), 7.45 (1H, dd, J=1.4 Hz and 4.9 Hz), 7.69 (1H, s), 7.71 (1H, s), 8.21 (1H, s), 8.37 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H20N4O2, 301. Found, 301.
Example 51
2-[1-(tetrahydrofuran-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(tetrahydrofuran-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and tetrahydrofurfuryl bromide according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C14H14N4O, 255. Found, 255.
B. 2-[1-(tetrahydrofuran-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 27% yield (two steps) from 2-[1-(tetrahydrofuran-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.53 (1H, m), 1.57 (2H, m), 1.92 (1H, m), 3.66 (1H, m), 3.79 (1H, m), 4.00 (1H, m), 4.10 (2H, m), 7.41 (1H, d, J=4.1 Hz), 7.69 (1H, s), 7.71 (1H, s), 8.25 (1H, s), 8.44 (1H, d, J=4.2 Hz). [M+H] Calc'd for C14H15N3O3, 274. Found, 274.
Example 52
2-[1-(pyrrolidin-3-yl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. tert-butyl 3-[4-(4-cyanopyridin-2-yl)-1H-imidazol-1-yl]pyrrolidine-1-carboxylate




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 1-boc-3-bromopyrrolidine according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C18H21N5O2, 340. Found, 340.
B. 2-[1-(pyrrolidin-3-yl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The above obtained cpd (tert-butyl 3-[4-(4-cyanopyridin-2-yl)-1H-imidazol-1-yl]pyrrolidine-1-carboxylate) was first treated with 10N NaOH/EtOH (0.5 mL/2 mL) at 90° C. for 1 hr to give the acid intermediate. After purification on ISCO flash column chromatography (MeOH/DCM=0-100%), the product was dissolved in MeOH and treated with HCl in dioxane to give the title cpd which after purification on flash column as light pink solid (5 mg, 16% in two steps). 1H NMR (400 MHz, DMSO-d6): δ 3.35 (2H, m), 3.47 (2H, m), 3.72 (2H, m), 5.10 (1H, m), 7.76 (1H, d, J=4.1 Hz), 8.36 (1H, s), 8.46 (1H, br s), 8.78 (1H, d, J=4.8 Hz), 9.51 (1H, br s). [M+H] Calc'd for C13H14N4O2, 259. Found, 259.
Example 53
2-[1-(pyrrolidin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid
A. tert-butyl 2-{[4-(4-cyanopyridin-2-yl)-1H-imidazol-1-yl]methyl}pyrrolidine-1-carboxylate




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and tert-butyl-2-(bromomethyl)pyrrolidine-1-carboxylate according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C19H23N5O2, 354. Found, 354.
B. 2-[1-(pyrrolidin-2-ylmethyl)-1H-imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 49% yield from tert-butyl 2-{[4-(4-cyanopyridin-2-yl)-1H-imidazol-1-yl]methyl}pyrrolidine-1-carboxylate according to the procedure for the preparation of Example 52, part B. 1H NMR (400 MHz, DMSO-d6): δ 1.81 (2H, m), 1.92 (2H, m), 2.07 (2H, m), 2.21 (3H, s), 2.37 (1H, m), 2.54 (2H, m), 3.98 (2H, t, J=7.1 Hz), 7.86 (1H, d, J=5.0 Hz), 8.39 (1H, s), 8.61 (1H, s), 8.86 (1H, d, J=5.0 Hz), 9.20 (1H, br s), 9.73 (1H, br s), 10.04 (1H, br s). [M+H] Calc'd for C14H16N4O2, 273. Found, 273.
Example 54
2-{1-[(4-methylmorpholin-2-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[(4-methylmorpholin-2-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 2-(chloromethyl)-4-methylmorpholine according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C15H17N5O, 284. Found, 284.
B. 2-{1-[(4-methylmorpholin-2-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 47% yield (two steps) from 2-{1-[(4-methylmorpholin-2-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 1.69 (1H, t, J=10.6 Hz), 1.95 (1H, dt, J=3.2 Hz and 11.3 Hz), 2.55 (1H, m), 2.66 (1H, d, J=11.0 Hz), 3.45 (3H, s), 3.48 (1H, dt, J=2.2 Hz and 11.1 Hz), 3.73 (1H, m), 3.80 (1H, d, J=10.6 Hz), 4.02 (2H, m), 7.46 (1H, dd, J=1.4 Hz and 4.9 Hz), 7.65 (2H, s), 8.21 (1H, s), 8.37 (1H, d, J=4.9 Hz). [M+H] Calc'd for C15H18N4O3, 303. Found, 303.
Example 55
2-{1-[(1-methylpiperidin-3-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[(1-methylpiperidin-3-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 3-chloromethyl-methyl piperidine according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C16H19N5, 282. Found, 282.
B. 2-{1-[(1-methylpiperidin-3-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 42% yield (two steps) from 2-{1-[(1-methylpiperidin-3-yl)methyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.92 (1H, m), 1.40-1.88 (5H, m), 1.91 (1H, m), 1.96 (1H, m), 2.11 (1H, m), 2.16 (3H, s), 3.92 (2H, d, J=7.3 Hz), 7.46 (1H, dd, J=1.4 Hz and 4.9 Hz), 7.65 (1H, d, J=1.1 Hz), 7.67 (1H, d, J=1.1 Hz), 8.22 (1H, s), 8.37 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H20N4O2, 301. Found, 301.
Example 56
methyl 2-(1-{2-[benzyl(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate
methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate
A. 5-bromo-1H-imidazole




To a solution of imidazole (30 g, 0.44 mol) in chloroform (180 mL) was added bromine (69 g, 500 mmol) in chloroform (50 mL) dropwise at room temperature. Then the mixture was stirred for 1 h. The mixture was filtered and the solids suspended in water and stirred for 30 min. The suspension was filtered and the beige solid was dried to give 22 g of an off white solid.
B. 1,1′,1′′-[(2-bromoethoxy)methanetriyl]tribenzene




2-Bromo-ethanol (6.3 g, 5.0 mmol), Et3N (10 mL, 72 mmol) and trityl chloride (14.6 g, 52.5 mmol) in anhydrous CH2Cl2 (50 mL) was stirred at room temperature overnight and concentrated in vacuo. The residue was purified by column chromatography on silica gel (hexane/EtOAc, 4:1) to give the title product (12 g).
C. 4-bromo-1-[2-(trityloxy)ethyl]-1H-imidazole




To a solution of 5-bromo-1H-imidazole as prepared in part A (2.2 g, 15 mmol) in DMF (22 mL) at 0° C. was added NaH (658 mg, 60% dispersion, 2.42 mmol) in small portions. The resulting solution was allowed to warm to r.t. and then stirred for 1 hr. The solution was cooled to 0° C. and 1,1′,1′′-[(2-bromoethoxy)methanetriyl]tribenzene (5.5 g, 15 mmol) in DMF (10 mL) was added drop-wise. The resulting solution was allowed to warm to r.t. where stirring continued until the reaction was judged complete by TLC (16 hr). The suspension was diluted with water and extracted with DCM (2×50 mL). The organics were dried (MgSO4), filtered, and concentrated to a solid that was recrystallized (EtOAc/Hex) to give 4.47 g of the title compound (69%).
D. 4-tri-n-butyltin-1-[2-(trityloxy)ethyl]-1H-imidazole




Bis(tributyltin) (13.93 g, 24 mmol), triphenylphosphine (314 mg, 1.2 mmol), sodium carbonate (1.27 g, 12 mmol), and palladium acetate (134 mg, 0.6 mmol) were added to a solution of 4-bromo-[2-(trityloxy)ethyl]-1H-imidazole (5.2 g, 12 mmol) in DMF/Toluene (1:1, 50 mL). The suspension was degassed with argon for 10 minutes and then heated to 100° C. in a sealed glass vessel for 15 hrs. The dark green solution was cooled to r.t. and filtered through a pad of celite; washing with EtOAc. The filtrate was diluted with water (100 mL) and extracted with EtOAc (2×100 mL). The organics were washed with water (2×100 mL), dried (MgSO4), filtered, concentrated, and chromatographed on silica gel (EtOAc:Hex, 1:1) to give the title compound (5.2 g) as a thick oil. 1HNMR (400 MHz, CDCl3): δ 0.9-1.7 (27H, m), 3.34 (2H, t, J=5 Hz), 4.08 (2H, t, J=5 Hz), 7.19-7.31 (15H, m).
E. methyl 2-{1-[2-(trityl)oxy)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylate




To a solution of methyl 2-chloro-4-pyridinecarboxylate (934 mg, 5.43 mmol) and 4-tri-n-butyltin-1-[2-(trityloxy)ethyl]-1H-imidazole (3.5 g, 5.43 mmol) in toluene (30 mL) was added tetrakis(triphenylphosphine)palladium(O) (314 mg, 0.27 mmol). The solution was degassed with argon for 5 minutes and sealed in a high pressure glass tube equipped with a stir bar. The tube was immersed in a preheated oil bath (115° C.). The solution was stirred for 7 hrs and cooled to r.t. The solvent was evaporated and the residue was chromatographed on silica gel (EtOAc:Hex, 1:1) to give the title compound (2.07 g) as a thick oil which crystallized to a white solid on standing at r.t.
F. methyl 2-[1-(2-hydroxyethyl)-1H-imidazol-4-yl]pyridine-4-carboxylate




To a solution of methyl 2-{1-[2-(trityl)oxy)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylate (2 g, 4.1 mmol) in MeOH (10 mL) was added 2N HCl (10 mL). The solution was stirred at r.t. for 3 hrs, diluted with water (100 mL), and extracted with EtOAc (2×50 mL). The organics were washed with NaHCO3 (5% solution, 50 mL), and brine (50 mL). The organics were then dried (MgSO4), filtered, and concentrated to a white solid which was triturated with ether/hexanes (10:90) to give the title compound (700 mg).
G. methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate




To a 0° C. solution of methyl 2-[1-(2-hydroxyethyl)-1H-imidazol-4-yl]pyridine-4-carboxylate (500 mg, 2 mmol) in DCM (10 mL) was added TEA (255 mg, 2.5 mmol) followed by drop-wise addition of a solution of methanesulfonyl chloride (255 mg, 2.22 mmol) in DCM (2 mL). The solution was stirred at 0° C. for 1 hr and then allowed to warm to r.t. where stirring was continued for 1 hr. MeOH (1 mL) was then added and stirring was continued for 30 min. The solution was diluted with DCM (50 mL), washed with water (50 mL), dried (MgSO4), filtered, and concentrated to give the title compound as an oily residue (649 mg).
H. methyl 2-(1-{2-[benzyl(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate




A solution of methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (150 mg, 0.46 mmol) and N-methylbenzylamine (558 mg, 4.6 mmol) in toluene (8 mL) was heated at 110° C. in a sealed tube for 7 hrs. The solution was concentrated to an oily residue and chromatographed on silica gel (EtOAc/Hex, 1:1) to give the title compound (118 mg) as an amber oil: 1HNMR (400 MHz, CDCl3): δ 2.28 (3H, s), 2.78 (2H, t, J=4.2 Hz), 3.61 (2H, s), 3.94 (3H, s), 4.03 (2H, t, J=4.2 Hz), 7.19-7.27 (5H, m), 7.58 (1H, s), 7.61 (1H, s), 7.64 (1H, m), 8.47 (1H, s), 8.63 (1H, m). [M+H] Calc'd for C20H22N4O2, 351. Found, 351.
Example 57
2-(1-{2-[benzyl(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid




To a solution of methyl 2-(1-{2-[benzyl(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (100 mg, 0.26 mmol) in MeOH (5 mL) was added 10 N NaOH solution (1 g). The mixture was stirred and refluxed for 1 hr and then cooled to r.t. The pH was carefully adjusted to 6.5 and the resulting mixture was concentrated to a residue. The residue was diluted with MeOH (10 mL) and filtered. The solids were washed with additional MeOH (10 mL). The filtrate was concentrated to an oily residue and chromatographed on silica gel (90% MeOH, 10% pH 7 buffer [potassium phosphate based] to give an amber oil. This oil was then chromatographed on reverse phase C18 silica gel [40-63 microns (mesh 230-400); 60 Å; 500 m2/g; pore volume 0.8 ml/g] using 80% MeOH/10% DI H2O to give the title compound (28 mg) as a beige solid: 1HNMR (400 MHz, DMSO): δ 2.18 (3H, s), 2.69 (2H, m), 3.51 (2H, m), 4.18 (2H, m), 7.17-7.23 (5H, m), 7.58 (1H, s), 7.73 (2H, m), 8.34 (1H, s), 8.54 (1H, s). [M+H] Calc'd for C19H20N4O2, 337. Found, 337.
Example 58
2-(1-{2-[methyl(phenyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid




A solution of methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (100 mg, 0.31 mmol) and N-methylaniline (328 mg, 3.1 mmol) in toluene (5 mL) was heated at 110° C. in a sealed tube for 36 hrs. The solution was concentrated to an oily residue which was dissolved in MeOH (5 mL). To this solution was added 10 N NaOH solution (1 g). The mixture was stirred and refluxed for 1 hr and then cooled to RT. The pH was carefully adjusted to 7 whereupon a precipitate formed. The solid was filtered and dried to give the title compound (41 mg) as an off white solid: 1HNMR (400 MHz, CD3OD): δ 2.79 (3H, s), 3.64 (2H, t, J=4.4 Hz), 4.21 (2H, t, J=4.4 Hz), 6.62 (1H, m), 6.68 (2H, m), 7.18 (2H, m), 7.57 (1H, m), 7.66 (1H, s), 7.84 (1H, s), 8.23 (1H, s), 8.63 (1H, m). [M+H] Calc'd for C18H18N4O2, 323. Found, 323.
Example 59
2-(1-{2-[(cyclopropylmethyl)(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid




A solution of methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (100 mg, 0.31 mmol) and cyclopropylmethyl(methyl)amine (260 mg, 3.1 mmol) in toluene (5 mL) was heated at 110° C. in a sealed tube for 24 hrs. The solution was concentrated to an oily residue which was dissolved in MeOH (5 mL). To this solution was added 10 N NaOH solution (1 g). The mixture was stirred and refluxed for 1 hr and then cooled to RT. The pH was carefully adjusted to 6.5 and the resulting mixture was concentrated to a residue. The residue was diluted with MeOH (10 mL) and filtered. The solids were washed with additional MeOH (10 mL). The filtrate was concentrated to an oily residue and chromatographed on silica gel (90% MeOH, 10% pH 7 buffer [potassium phosphate based] to give a foam. The foam was then chromatographed on reverse phase C18 silica gel [40-63 microns (mesh 230-400); 60 Å; 500 m2/g; pore volume 0.8 ml/g] using 80% MeOH/10% DI H2O to give the title compound (32 mg) as a beige solid: 1HNMR (400 MHz, CD3OD): δ 0.29 (2H, s), 0.73 (2H, s), 1.05 (1H, m), 2.77 (5H, m), 3.51 (2H, t, J=4.2 Hz), 4.45 (2H, t, J=4.2 Hz), 7.79 (1H, s), 7.92 (2H, m), 8.43 (1H, s), 8.64 (1H, s). [M+H] Calc'd for C16H20N4O2, 301. Found, 301.
Example 60
2-{1-[2-(2-oxopyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(2-oxopyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 1-(2-chloroethyl)-2-pyrrolidinone according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C15H15N5O, 282. Found, 282.
B. 2-{1-[2-(2-oxopyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 58% yield (two steps) from 2-{1-[2-(2-oxopyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 2.16 (2H, t, J=7.9 Hz), 2.78 (2H, t, J=6.4 Hz), 3.19 (2H, t, J=7.0 Hz), 3.56 (2H, t, J=5.6 Hz), 4.15 (2H, t, J=5.7 Hz), 7.48 (1H, dd, J=1.3 Hz and 4.9 Hz), 7.69 (1H, d, J=0.9 Hz), 7.73 (1H, s), 8.23 (1H, s), 8.42 (1H, d, J=4.9 Hz). [M+H] Calc'd for C15H16N4O3, 301. Found, 301.
Example 61
2-{1-[2-(pyrrolidin-1-yl)propyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid
A. 2-{1-[2-(pyrrolidin-1-yl)propyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile and 1-(2-chloro-1-methylethyl)pyrrolidine hydrogen chloride according to the procedure for the preparation of Example 43, part A (heating to 120°). [M+H] Calc'd for C16H19N5, 282. Found, 282.
B. 2-{1-[2-(pyrrolidin-1-yl)propyl]-1H-imidazol-4-yl}pyridine-4-carboxylic acid




The title compound was prepared in 69% yield (two steps) from 2-{1-[2-(pyrrolidin-1-yl)propyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile according to the procedure for the preparation of Example 1. 1H NMR (400 MHz, DMSO-d6): δ 0.93 (3H, d, J=6.4 Hz), 1.67 (4H, m), 2.59 (4H, m), 2.79 (1H, m), 4.01 (1H, dd, J=6.0 Hz and 6.1 Hz), 4.13 (1H, dd, J=5.1 Hz and 5.1 Hz), 7.52 (1H, dd, J=1.3 Hz and 4.9 Hz), 7.71 (1H, s), 7.72 (1H, s), 8.26 (1H, s), 8.51 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H20N4O2, 301. Found, 301.
Example 62
2-(1-methyl-1H-imidazol-4-yl)-4-(2H-tetrazol-5-yl)pyridine




To a solution of 2-(1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (50 mg, 0.36 mmol) in 2 mL of DMF was added sodium azide (65 mg, 1 mmol) and ammonium chloride (54 mg, 1 mmol). The reaction mixture was heated at 90° C. for 20 hrs with vigorous stirring. It was then purified by ISCO flash column chromatography (MeOH/DCM=0-100%) to give the title compound as light pink solid (45 mg, 73%). 1H NMR (400 MHz, DMSO-d6): δ 3.73 (3H, s), 7.71 (1H, dd, J=1.5 Hz and 5.1 Hz), 7.74 (2H, s), 8.46 (1H, s), 8.51 (1H, d, J=5.0 Hz). [M+H] Calc'd for C10H9N7, 228. Found, 228.
Example 63
2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 27% yield from 2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-yl}pyridine-4-carbonitrile (Example 43, part A) according to the procedure in Example 62. 1H NMR (400 MHz, DMSO-d6): δ 1.72 (4H, m), 2.55 (4H, m), 2.93 (2H, m), 4.18 (2H, t, J=5.4 Hz), 7.68 (1H, dd, J=1.6 Hz and 4.9 Hz), 7.77 (1H, s), 7.79 (1H, s), 8.44 (1H, d, J=5.1 Hz), 8.45 (1H, s). [M+H] Calc'd for C15H18N8, 311. Found, 311.
Example 64
N-cyano-2-(1-{2-[(cyclopropylmethyl)(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxamide




A mixture of 2-(1-{2-[(cyclopropylmethyl)(methyl)amino]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylic acid (10 mg, 0.03 mmol, Example 59), cyanamide (4 mg, 0.1 mmol), HATU (38 mg, 0.1 mmol), TEA (29 μL, 0.2 mmol) in DMF (2 mL) was stirred at r.t. for 1 hr. The reaction mixture was purified by ISCO flash column chromatography (MeOH/DCM=0-50%) to give the title compound as off-white solid (6 mg, 60%). 1HNMR (400 MHz, DMSO-d6): δ 0.43 (2H, m), 0.79 (2H, m), 1.15 (1H, m), 2.30 (5H, m), 2.76 (2H, m), 4.11 (2H, t, J=4.2 Hz), 7.29 (1H, m), 7.73 (1H, d, J=11.4 Hz), 8.27 (1H, s), 8.29 (1H, s), 8.49 (1H, s). [M+H] Calc'd for C17H20N6O, 325. Found, 325.
Example 65
N-benzyl-2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]benzamide
A. N-benzyl-5-[5-(4-cyanopyridin-2-yl)-3-methylimidazol-4-yl]-2-fluorobenzamide




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 3-(benzylcarbamoyl)-4-fluorophenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C24H18FN5O, 412. Found, 412.
B. N-benzyl-2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]benzamide




The title compound was prepared in 9% yield (two steps) from N-benzyl-5-[5-(4-cyanopyridin-2-yl)-3-methylimidazol-4-yl]-2-fluorobenzamide according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.54 (3H, s), 4.47 (2H, d, J=5.8 Hz), 7.24 (1H, m), 7.32 (4H, d), 7.40 (1H, t, J=9.3 Hz), 7.64 (1H, m), 7.73 (2H, d, J=5.1 Hz), 8.00 (1H, s), 8.42 (1H, d, J=4.7 Hz), 8.54 (1H, s), 8.97 (1H, br s). [M+H] Calc'd for C24H19FN8O, 455. Found, 455.
Example 66
2-[1-[2-[methyl-[(3-methylphenyl)methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 57% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 3-methyl-N-methylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.20 (3H, s), 2.29 (3H, s), 2.68 (2H, t, J=6 Hz), 3.85 (2H, s), 4.02 (1H, t, J=5.9 Hz), 4.15 (1H, t, J=6.0 Hz), 6.96 (1H, m), 7.11 (2H, t, J=9.0 Hz), 7.18-7.27 (2H, m), 7.51 (1H, d, J=3.6 Hz), 7.74 (1H, s), 8.28 (1H, s), 8.47 (1H, d, J=4.8 Hz). [M+H] Calc'd for C20H22N4O2, 351. Found, 351.
Example 67
2-[1-[2-[methyl-[(4-methylphenyl)methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 71% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-methyl-N-methylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.33 (3H, s), 2.61 (3H, s), 2.69 (2H, t, J=6 Hz), 3.80 (2H, s), 4.00 (1H, t, J=5.7 Hz), 4.13 (1H, t, J=5.8 Hz), 7.23 (2H, t, J=8.9 Hz), 7.44 (1H, m), 7.51 (1H, d, J=6.9 Hz), 7.52 (1H, s), 7.73 (1H, d, J=5.1 Hz), 8.24 (1H, m), 8.35 (1H, s), 8.76 (1H, d, J=4.8 Hz). [M+H] Calc'd for C20H22N4O2, 351. Found, 351.
Example 68
2-[1-[2-[methyl-[[4-(trifluoromethyl)phenyl]methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 5% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-trifluoromethyl-N-methylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.22 (3H, s), 2.73 (2H, t, J=5.8 Hz), 3.62 (2H, s), 4.16 (2H, t, J=5.9 Hz), 7.12 (1H, m), 7.21 (1H, m), 7.38 (2H, d, J=7.8 Hz), 7.54 (2H, d, J=8.2 Hz), 7.75 (1H, s), 8.29 (1H, s), 8.54 (1H, d, J=4.8 Hz). [M+H] Calc'd for C20H19F3N4O2, 405. Found, 405.
Example 69
2-[1-[2-[(3-fluorophenyl)methyl-methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 9% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 3-fluoro-N-methylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.20 (3H, s), 2.71 (2H, t, J=6.2 Hz), 4.02 (1H, t, J=5.8 Hz), 4.16 (2H, t, J=6.2 Hz), 4.39 (1H, t, J=5.9 Hz), 6.93 (1H, d, J=9.8 Hz), 7.00 (2H, d, J=7.8 Hz), 7.25 (1H, m), 7.57 (1H, m), 7.74 (1H, s), 7.79 (1H, d, J=4.2 Hz), 8.30 (1H, s), 8.59 (1H, m). [M+H] Calc'd for C19H19FN4O2, 355. Found, 355.
Example 70
2-[1-[2-[ethyl-[(4-fluorophenyl)methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 14% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-fluoro-N-ethylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 0.90 (3H, t, J=6.9 Hz), 2.74 (2H, t, J=6.4 Hz), 3.58 (2H, s), 4.08 (2H, t, J=5.9 Hz), 7.03 (2H, t, J=8.9 Hz), 7.23 (2H, dd, J=7.0 Hz and 2.6 Hz), 7.43 (1H, d, J=5.2 Hz), 7.66 (1H, d, J=4.4 Hz), 8.21 (1H, s), 8.35 (1H, d, J=4.5 Hz), 8.54 (1H, s). [M+H] Calc'd for C20H21FN4O2, 369. Found, 369.
Example 71
2-[1-[2-[cyclopropyl-[(4-fluorophenyl)methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 9% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and N-[(4-fluorophenyl)methyl]cyclopropylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 0.16 (2H, m), 0.39 (2H, m), 1.82 (1H, m), 2.87 (2H, t, J=6.4 Hz), 3.74 (2H, s), 4.10 (2H, t, J=6.2 Hz), 7.09 (2H, t, J=8.9 Hz), 7.28 (2H, dd, J=7.1 Hz and 2.7 Hz), 7.51 (1H, d, J=4.5 Hz), 7.67 (2H, d, J=1.6 Hz), 8.25 (1H, s), 8.47 (1H, d, J=4.8 Hz). [M+H] Calc'd for C21H21FN4O2, 381. Found, 381.
Example 72
2-[1-[2-[(4,4-difluorocyclohexyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and (4,4-difluorocyclohexyl)methanamine hydrogen chloride according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 1.13 (2H, m), 1.75 (4H, m), 1.96 (2H, m), 2.42 (2H, d, J=6.7 Hz), 2.88 (2H, t, J=6.0 Hz), 4.06 (2H, t, J=6.0 Hz), 7.53 (1H, dd, J=4.9 Hz), 7.73 (1H, s), 7.79 (1H, s), 8.25 (1H, s), 8.55 (1H, d, J=4.9 Hz). [M+H] Calc'd for C18H22F2N4O2, 365. Found, 365.
Example 73
2-[1-[2-[(3,3-difluorocyclobutyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 7% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and (4,4-difluorocyclobutyl)methanamine hydrogen chloride according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.24 (5H, m), 2.88 (2H, t, J=6.2 Hz), 4.05 (2H, t, J=6.0 Hz), 7.52 (1H, dd, J=4.7 Hz), 7.72 (1H, s), 7.78 (1H, s), 8.25 (1H, s), 8.54 (1H, d, J=4.6 Hz). [M+H] Calc'd for C16H18F2N4O2, 337. Found, 337.
Example 74
2-[1-[2-[(4-fluorophenyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 20% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-fluorobenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.86 (2H, t, J=6.0 Hz), 3.70 (2H, s), 4.09 (2H, t, J=6.0 Hz), 7.08 (2H, t, J=8.9 Hz), 7.33 (2H, dd, J=7.1 Hz and 2.6 Hz), 7.55 (1H, dd, J=3.2 Hz and 1.5 Hz), 7.75 (1H, d, J=1.0 Hz), 7.81 (1H, s), 8.27 (1H, s), 8.59 (1H, d, J=4.9 Hz). [M+H] Calc'd for C18H17FN4O2, 341. Found, 341.
Example 75
2-[1-[2-[[2-(trifluoromethyl)phenyl]methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 6% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 2-(trifluoromethyl)benzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.89 (2H, t, J=5.9 Hz), 3.88 (2H, s), 4.10 (2H, t, J=5.9 Hz), 7.42 (1H, t, J=7.7 Hz), 7.50 (1H, d, J=5.0 Hz), 7.59 (1H, d, J=7.6 Hz), 7.65 (2H, d, J=8.6 Hz), 7.74 (1H, s), 7.77 (1H, s), 8.25 (1H, s), 8.49 (1H, d, J=4.8 Hz). [M+H] Calc'd for C17H19F3N4O2, 391. Found, 391.
Example 76
2-[1-[2-(1,3-dihydroisoindol-2-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 15% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and isoindoline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.10 (2H, t, J=6.0 Hz), 3.99 (4H, s), 4.21 (2H, t, J=6.0 Hz), 7.17-7.24 (4H, m), 7.56 (1H, d, J=3.8 Hz), 7.82 (1H, s), 7.88 (1H, s), 8.27 (1H, s), 8.59 (1H, d, J=5.0 Hz). [M+H] Calc'd for C19H18N4O2, 335. Found, 335.
Example 77
2-[1-[2-[(2-methoxyphenyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 19% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 2-methoxybenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.91 (2H, t, J=5.9 Hz), 3.72 (2H, s), 3.75 (3H, s), 4.13 (2H, t, J=6.0 Hz), 6.88 (1H, t, J=7.4 Hz), 6.95 (1H, d, J=8.2 Hz), 7.20 (1H, t, J=8.8 Hz), 7.25 (1H, d, J=7.4 Hz), 7.56 (1H, dd, J=6.4 and 1.4 Hz), 7.75 (1H, s), 7.82 (1H, s), 8.28 (1H, s), 8.59 (1H, d, J=5.0 Hz). [M+H] Calc'd for C19H20N4O3, 353. Found, 353.
Example 78
2-[1-[2-[(2-chlorophenyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 8% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 2-chlorobenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.90 (2H, t, J=6.0 Hz), 3.80 (2H, s), 4.11 (2H, t, J=6.0 Hz), 7.23-7.27 (2H, m), 7.38 (1H, dd, J=4.5 and 1.5 Hz), 7.45 (1H, dd, J=4.6 and 2.2 Hz), 7.55 (1H, dd, J=3.2 and 1.5 Hz), 7.76 (1H, s), 7.81 (1H, s), 8.27 (1H, s), 8.56 (1H, d, J=5.0 Hz). [M+H] Calc'd for C18H17ClN4O2, 358. Found, 358.
Example 79
2-[1-[2-(5-fluoro-1,3-dihydroisoindol-2-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 76% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 5-fluoro-2,3-dihydro-1H-isoindole according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.08 (2H, t, J=6.0 Hz), 3.88 (2H, s), 3.92 (2H, s), 4.19 (2H, t, J=6.0 Hz), 6.98 (1H, td, J=9.6 and 2.5 Hz), 7.08 (1H, dd, J=5.5 and 2.0 Hz), 7.24 (1H, dd, J=6.7 and 3.0 Hz), 7.52 (1H, d, J=3.8 Hz), 7.80 (1H, s), 7.84 (1H, s), 8.26 (1H, s), 8.53 (1H, d, J=5.0 Hz). [M+H] Calc'd for C19H17FN4O2, 353. Found, 353.
Example 80
2-[1-[2-[(2-ethylphenyl)methylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 87% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 2-ethylbenzylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 1.11 (3H, t, J=7.5 Hz), 2.61 (2H, q, J=7.6 Hz), 2.92 (2H, t, J=6.1 Hz), 3.71 (2H, s), 4.09 (2H, t, J=5.9 Hz), 7.11-7.16 (3H, m&s), 7.27 (1H, d, J=7.6 Hz), 7.44 (1H, dd, J=6.2 and 1.4 Hz), 7.69 (1H, s), 7.71 (1H, s), 8.21 (1H, s), 8.36 (1H, d, J=4.8 Hz). [M+H] Calc'd for C20H22N4O2, 351. Found, 351.
Example 81
2-[1-[2-(4-chloro-1,3-dihydroisoindol-2-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 10% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-chloroisoindoline hydrogen chloride according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.15 (2H, m), 4.05 (4H, br s), 4.25 (2H, m), 7.19-7.27 (2H, m), 7.59 (1H, dd, J=4.9 Hz), 7.66 (1H, dd, J=6.7 and 3.0 Hz), 7.94 (1H, s), 8.11 (1H, s), 8.28 (1H, s), 8.33 (1H, s), 8.65 (1H, d, J=5.2 Hz). [M+H] Calc'd for C19H17ClN4O2, 369. Found, 369.
Example 82
2-[1-[2-(5-chloro-1,3-dihydroisoindol-2-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 17% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 5-chloroisoindoline hydrogen chloride according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.08 (2H, t, J=5.9 Hz), 3.90 (2H, s), 3.92 (2H, s), 4.20 (2H, t, J=6.0 Hz), 7.24 (2H, s), 7.31 (1H, s), 7.56 (1H, d, J=4.8 Hz), 7.80 (1H, s), 7.88 (1H, s), 8.27 (1H, s), 8.61 (1H, d, J=4.9 Hz). [M+H] Calc'd for C19H17ClN4O2, 369. Found, 369.
Example 83
2-[1-[2-(4-cyano-1,3-dihydroisoindol-2-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 11% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-cyanoisoindoline hydrogen chloride according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.13 (2H, t, J=6.0 Hz), 4.03 (2H, s), 4.13 (2H, s), 4.23 (2H, t, J=4.5 Hz), 7.41 (1H, d, J=7.6 Hz), 7.55 (2H, m), 7.66 (1H, d, J=5.7 Hz), 7.80 (1H, s), 7.87 (1H, s), 8.26 (1H, s), 8.57 (1H, d, J=4.9 Hz). [M+H] Calc'd for C20H17N5O2, 360. Found, 360.
Example 84
2-[1-[2-[5-(trifluoromethyl)-1,3-dihydroisoindol-2-yl]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 8% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 5-trifluoromethylisoindoline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 3.12 (2H, t, J=6.0 Hz), 4.10 (4H, s), 4.21 (2H, t, J=5.9 Hz), 7.45 (1H, d, J=8.0 Hz), 7.55 (2H, d, J=8.8 Hz), 7.60 (1H, s), 7.81 (1H, s), 7.86 (1H, s), 8.26 (1H, s), 8.56 (1H, m). [M+H] Calc'd for C20H17F3N4O2, 403. Found, 403.
Example 85
2-[1-[2-[(4-chlorophenyl)methyl-cyclopropylamino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 8% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and (4-chlorobenzyl)cyclopropylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 0.17 (2H, m), 0.40 (2H, m), 1.83 (1H, m), 2.88 (2H, t, J=6.4 Hz), 3.72 (2H, s), 4.10 (2H, t, J=6.2 Hz), 7.26 (1H, d, J=8.4 Hz), 7.32 (2H, t, J=8.4 Hz), 7.45 (1H, dd, J=3.7 Hz), 7.64 (2H, d, J=4.4 Hz), 8.21 (1H, s), 8.31 (1H, s), 8.40 (1H, d, J=4.8 Hz). [M+H] Calc'd for C21H21ClN4O2, 398. Found, 398.
Example 86
2-[1-[2-[cyclopropyl-[(3,4-dichlorophenyl)methyl]amino]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 7% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and (3,4-dichlorobenzyl)cyclopropylamine according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 0.14 (2H, m), 0.40 (2H, m), 1.85 (1H, m), 2.90 (2H, t, J=6.2 Hz), 3.74 (2H, s), 4.14 (2H, t, J=6.2 Hz), 7.21 (1H, dd, J=8.3 and 1.8 Hz), 7.45-7.56 (3H, m), 7.70 (1H, s), 7.72 (1H, s), 8.26 (1H, s), 8.56 (1H, d). [M+H] Calc'd for C21H20Cl2N4O2, 432. Found, 432.
Example 87
2-[1-[2-(4-chloro-N-methylanilino)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 19% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 4-chloro-N-methylaniline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.77 (3H, s), 3.71 (2H, t, J=6.4 Hz), 4.17 (2H, t, J=6.4 Hz), 6.71 (1H, d, J=9.0 Hz), 6.99 (1H, m), 7.15 (1H, s), 7.17 (1H, s), 7.57 (1H, m), 7.65 (1H, s), 7.78 (1H, s), 8.24 (1H, s), 8.41 (1H, d, J=5.2 Hz). [M+H] Calc'd for C18H17ClN4O2, 358. Found, 358.
Example 88
2-[1-[2-(3,4-dihydro-2H-quinolin-1-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 17% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 1,2,3,4-tetrahydroquinoline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 1.76 (2H, t, J=5.5 Hz), 2.64 (2H, t, J=6.2 Hz), 3.08 (2H, t, J=5.5 Hz), 3.62 (2H, t, J=6.2 Hz), 4.20 (2H, t, J=6.2 Hz), 6.48 (1H, t, J=7.1 Hz), 6.61 (1H, d, J=8.1 Hz), 6.86 (1H, d, J=6.6 Hz), 6.95 (1H, t, J=7.7 Hz), 7.53 (1H, d, J=3.6 Hz), 7.71 (1H, s), 7.84 (1H, s), 8.25 (1H, s), 8.53 (1H, d, J=5.0 Hz). [M+H] Calc'd for C20H20N4O2, 349. Found, 349.
Example 89
2-[1-[2-(6-chloro-3,4-dihydro-2H-quinolin-1-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 9% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 6-chloro-1,2,3,4-tetrahydroquinoline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 1.74 (2H, t, J=5.1 Hz), 2.64 (2H, t, J=6.5 Hz), 3.06 (2H, t, J=5.5 Hz), 3.63 (2H, t, J=6.2 Hz), 4.18 (2H, t, J=6.0 Hz), 6.62 (1H, d, J=8.9 Hz), 6.92 (1H, s), 6.94 (1H, t, J=8.7 Hz), 7.49 (1H, d, J=4.8 Hz), 7.69 (1H, s), 7.81 (1H, s), 8.23 (1H, s), 8.46 (1H, d, J=4.1 Hz). [M+H] Calc'd for C20H19ClN4O2, 384. Found, 384.
Example 90
2-[1-[2-(6-fluoro-3,4-dihydro-2H-quinolin-1-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 6-fluoro-1,2,3,4-tetrahydroquinoline according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 1.75 (2H, t, J=5.5 Hz), 2.64 (2H, t, J=6.2 Hz), 3.06 (2H, t, J=5.4 Hz), 3.60 (2H, t, J=6.2 Hz), 4.19 (2H, t, J=6.3 Hz), 6.60 (1H, m), 6.74 (1H, s), 6.76 (1H, d, J=8.5 Hz), 7.53 (1H, d, J=4.6 Hz), 7.72 (1H, s), 7.85 (1H, s), 8.25 (1H, s), 8.55 (1H, d). [M+H] Calc'd for C20H19FN4O2, 367. Found, 367.
Example 91
2-[1-[2-(5-fluoro-2,3-dihydroindol-1-yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 11% yield from methyl 2-(1-{2-[(methylsulfonyl)oxy]ethyl}-1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 6) and 5-fluoro-2,3-dihydro-(1H)-indole according to the procedure for the preparation of Example 58. 1HNMR (400 MHz, DMSO): δ 2.88 (2H, t, J=8.4 Hz), 3.42 (2H, t, J=6.2 Hz), 4.25 (2H, t, J=6.1 Hz), 6.49 (1H, m), 6.76 (1H, td, J=2.2 and 8.8 Hz), 6.89 (1H, dd, J=6.4 Hz), 7.57 (1H, d, J=5.0 Hz), 7.83 (1H, s), 7.94 (1H, s), 8.27 (1H, s), 8.62 (1H, d, J=4.8 Hz). [M+H] Calc'd for C19H17FN4O2, 353. Found, 353.
Example 92
2-[1-[2-(4-fluorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 48% yield from methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 5) and 4-fluorophenethyl bromide according to the procedure for the preparation of Example 44, followed by saponification using NaOH in MeOH. 1HNMR (400 MHz, DMSO): δ 3.09 (2H, t, J=7.1 Hz), 4.27 (2H, t, J=7.2 Hz), 7.11 (2H, t, J=8.8 Hz), 7.24 (2H, t, J=7.1 Hz), 7.57 (1H, d, J=3.8 Hz), 7.63 (1H, s), 7.82 (1H, s), 8.26 (1H, s), 8.63 (1H, d, J=5.0 Hz). [M+H] Calc'd for C17H14FN3O2, 312. Found, 312.
Example 93
2-[1-[2-(2-fluorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 48% yield from methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 5) and 2-fluorophenethyl bromide according to the procedure for the preparation of Example 44, followed by saponification using NaOH in MeOH. 1HNMR (400 MHz, DMSO): δ 3.14 (2H, t, J=6.9 Hz), 4.29 (2H, t, J=7.0 Hz), 7.13 (2H, m), 7.27 (2H, m), 7.58 (1H, d, J=4.0 Hz), 7.63 (1H, s), 7.80 (1H, s), 8.25 (1H, s), 8.62 (1H, d, J=4.9 Hz). [M+H] Calc'd for C17H14FN3O2, 312. Found, 312.
Example 94
2-[1-[2-(4-methoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 39% yield from methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 5) and 4-methoxyphenethyl bromide according to the procedure for the preparation of Example 44, followed by saponification using NaOH in MeOH. 1HNMR (400 MHz, DMSO): δ 3.02 (2H, t, J=7.2 Hz), 3.71 (3H, s), 4.24 (2H, t, J=7.2 Hz), 6.83 (2H, t, J=8.6 Hz), 7.12 (2H, t, J=8.6 Hz), 7.58 (1H, d, J=3.7 Hz), 7.62 (1H, s), 7.82 (1H, s), 8.26 (1H, s), 8.63 (1H, d, J=4.9 Hz). [M+H] Calc'd for C18H17N3O3, 324. Found, 324.
Example 95
2-[1-[2-(2-methoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 18% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-methoxyphenethyl bromide according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 3.05 (2H, t, J=7.1 Hz), 3.79 (3H, s), 4.22 (2H, t, J=7.1 Hz), 6.83 (1H, t, J=7.3 Hz), 6.97 (1H, d, J=8.1 Hz), 7.06 (1H, d, J=7.8 Hz), 7.21 (1H, t, J=9.0 Hz), 7.53 (1H, d, J=3.9 Hz), 7.53 (1H, s), 7.70 (1H, s), 8.20 (1H, s), 8.52 (1H, m). [M+H] Calc'd for C18H17N3O3, 324. Found, 324.
Example 96
2-[1-[2-(2-methylphenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 27% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-methylphenethyl bromide according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 2.23 (3H, s), 3.08 (2H, t, J=7.4 Hz), 4.24 (2H, t, J=7.2 Hz), 7.12 (4H, m), 7.58 (1H, dd, J=1.5 and 5.0 Hz), 7.66 (1H, s), 7.84 (1H, s), 8.27 (1H, s), 8.63 (1H, d, J=5.1 Hz). [M+H] Calc'd for C18H17N3O2, 308. Found, 308.
Example 97
2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 18% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-chlorophenethyl bromide according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 3.26 (2H, t, J=5.6 Hz), 4.32 (2H, t, J=7.3 Hz), 7.45 (2H, m), 7.59 (2H, m), 7.67 (1H, s), 7.71 (1H, d, J=7.7 Hz), 7.81 (1H, s), 8.27 (1H, s), 8.64 (1H, d, J=4.9 Hz). [M+H] Calc'd for C17H14ClN3O2, 329. Found, 329.
Example 98
2-[1-[2-[2-(trifluoromethyl)phenyl]ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 12% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-(trifluoromethyl)phenethyl bromide according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 3.23 (2H, t, J=7.2 Hz), 4.30 (2H, t, J=7.1 Hz), 7.27 (3H, m), 7.45 (2H, m), 7.58 (1H, dd, J=1.4 and 4.9 Hz), 7.64 (1H, s), 7.80 (1H, s), 8.26 (1H, s), 8.62 (1H, d, J=4.9 Hz). [M+H] Calc'd for C15H14F3N3O2, 362. Found, 362.
Example 99
2-[1-(2,3-dihydro-1H-inden-2-yl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 48% yield from methyl 2-(1H-imidazol-4-yl)pyridine-4-carboxylate (PREPARATION 5) and 2-bromo-2,3-dihydro-1H-indene according to the procedure for the preparation of Example 44, followed by saponification using NaOH in MeOH. 1HNMR (400 MHz, DMSO): δ 2.21 (2H, d), 3.52 (2H, d), 5.22 (1H, m), 7.23 (2H, m), 7.32 (2H, m), 7.45 (1H, t, J=5.4 Hz), 7.59 (1H, s), 7.82 (1H, s), 8.21 (1H, s), 8.35 (1H, d). [M+H] Calc'd for C18H15N3O2, 306. Found, 306.
Example 100
2-(1-benzylimidazol-4-yl)pyridine-4-carboxylic acid




The title compound was prepared in 30% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and benzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.26 (2H, s), 7.35 (5H, m), 7.58 (1H, d, J=4.9 Hz), 7.83 (1H, s), 7.91 (1H, s), 8.28 (1H, s), 8.63 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H13N3O2, 280. Found, 280.
Example 101
2-[1-[(4-fluorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 22% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 4-fluorobenzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.46 (2H, s), 7.21 (2H, t, J=8.9 Hz), 7.43 (2H, d, J=7.1 Hz), 7.54 (1H, d, J=5.8 Hz), 7.79 (1H, s), 7.89 (1H, s), 8.26 (1H, s), 8.53 (1H, d, J=4.9 Hz). [M+H] Calc'd for C16H12FN3O2, 298. Found, 298.
Example 102
2-[1-[(2-fluorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 17% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-fluorobenzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.38 (2H, s), 7.25 (2H, m), 7.40 (2H, m), 7.56 (1H, d, J=4.5 Hz), 7.74 (1H, s), 7.87 (1H, s), 8.28 (1H, s), 8.53 (1H, d, J=4.8 Hz). [M+H] Calc'd for C16H12FN3O2, 298. Found, 298.
Example 103
2-[1-[(3-fluorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic




The title compound was prepared in 11% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and (1-bromomethyl)benzene according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 1.85 (3H, d, J=6.9 Hz), 5.60 (1H, m), 7.31 (1H, m), 7.34 (4H, m), 7.50 (1H, m), 7.81 (1H, s), 7.92 (1H, s), 8.24 (1H, s), 8.47 (1H, br s). [M+H] Calc'd for C17H15N3O2, 294. Found, 294.
Example 104
2-[1-[(3-fluorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic




The title compound was prepared in 13% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 3-fluorobenzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.40 (2H, s), 7.21 (3H, m), 7.42 (1H, m), 7.56 (1H, d, J=4.0 Hz), 7.87 (1H, s), 7.92 (1H, s), 8.27 (1H, s), 8.58 (1H, d). [M+H] Calc'd for C16H12FN3O2, 298. Found, 298.
Example 105
2-[1-[2-(2-chlorophenyl)-2-methylpropyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 17% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(2-bromo-1,1-dimethylethyl)-2-chlorobenzene according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 1.48 (6H, s), 4.52 (2H, s), 7.24-7.36 (5H, m), 7.54 (2H, m), 8.19 (1H, s), 8.56 (1H, d, J=5.0 Hz). [M+H] Calc'd for C19H18ClN3O2, 357. Found, 357.
Example 106
2-[1-(1-phenylpropan-2-yl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-bromo-1-phenylpropane according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 0.85 (3H, t, J=7.2 Hz), 2.24 (1H, m), 2.33 (1H, m), 5.30 (1H, t, J=7.8 Hz), 7.21-7.31 (3H, m), 7.38 (2H, d, J=7.4 Hz), 7.58 (1H, dd, J=1.6 and 4.9 Hz), 7.93 (1H, s), 7.97 (1H, s), 8.27 (1H, s), 8.60 (1H, d, J=4.7 Hz). [M+H] Calc'd for C18H17N3O2, 308. Found, 308.
Example 107
2-[1-(1-phenylpropyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 24% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-bromopropylbenzene according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.85 (3H, t, J=7.2 Hz), 2.22 (1H, m), 2.33 (1H, m), 5.30 (1H, t, J=7.8 Hz), 7.31 (1H, t, J=7.4 Hz), 7.38 (2H, t, J=7.2 Hz), 7.46 (2H, d, J=8.7 Hz), 7.56 (1H, dd, J=1.4 and 5.0 Hz), 7.91 (1H, s), 7.96 (1H, s), 8.27 (1H, s), 8.55 (1H, d, J=4.9 Hz). [M+H] Calc'd for C18H17N3O2, 308. Found, 308.
Example 108
2-[1-(2-methyl-1-phenylpropyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 16% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-bromo-2-methylbenzene according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.79 (3H, d, J=6.5 Hz), 0.85 (3H, d, J=6.4 Hz), 2.80 (1H, m), 4.90 (1H, d, J=11.2 Hz), 7.32 (1H, t, J=7.4 Hz), 7.38 (2H, t, J=7.2 Hz), 7.49 (1H, d, J=4.1 Hz), 7.59 (1H, s), 7.61 (1H, s), 7.93 (1H, s), 8.22 (1H, s), 8.40 (1H, br s). [M+H] Calc'd for C19H19N3O2, 322. Found, 322.
Example 109
2-[1-(6-fluoro-2,3-dihydro-1H-inden-1-yl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 5% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-bromo-6-fluoro-2,3-dihydro-1H-indene according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 2.33 (2H, m), 2.66 (2H, m), 5.87 (1H, t, J=6.8 Hz), 6.96 (1H, dd, J=2.2 and 8.8 Hz), 7.14 (1H, dt, J=2.8 and 9.1 Hz), 7.41 (1H, t, J=5.2 Hz), 7.46 (1H, d, J=4.1 Hz), 7.52 (1H, s), 7.84 (1H, s), 8.23 (1H, s), 8.35 (1H, d, J=4.6 Hz). [M+H] Calc'd for C18H14FN3O2, 324. Found, 324.
Example 110
2-[1-(4-fluoro-2,3-dihydro-1H-inden-1-yl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 10% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-bromo-4-fluoro-2,3-dihydro-1H-indene according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 2.36 (2H, m), 2.74 (1H, m), 2.98 (1H, m), 5.95 (1H, t, J=6.9 Hz), 6.98 (1H, J=7.4 Hz), 7.15 (1H, t, J=8.8 Hz), 7.28 (1H, q, J=8.0 Hz), 7.51 (1H, d, J=4.6 Hz), 7.60 (1H, s), 7.88 (1H, s), 8.26 (1H, s), 8.46 (1H, d, J=5.1 Hz). [M+H] Calc'd for C18H14FN3O2, 324. Found, 324.
Example 111
2-[1-[(3-phenylphenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 70% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 3-phenylbenzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.32 (2H, s), 7.35 (2H, t, J=8.3 Hz), 7.47 (2H, t, J=7.6 Hz), 7.54 (1H, d, J=3.6 Hz), 7.61-7.67 (2H, m), 7.72 (1H, s), 7.87 (1H, s), 7.96 (1H, s), 8.26 (1H, s), 8.55 (1H, d, J=4.9 Hz). [M+H] Calc'd for C22H17N3O2, 356. Found, 356.
Example 112
2-[1-(2-naphthalen-1-ylethyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 30% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(2-bromoethyl)naphthalene according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 3.58 (2H, t, J=7.6 Hz), 4.37 (2H, t, J=7.6 Hz), 7.36 (1H, d, J=6.2 Hz), 7.42 (1H, t, J=7.2 Hz), 7.51-7.60 (2H, m), 7.65 (1H, s), 7.83 (2H, t, J=6.0 Hz), 7.94 (1H, d, J=8.5 Hz), 8.23 (1H, s), 8.25 (1H, s), 8.39 (2H, s), 8.44 (1H, d, J=4.8 Hz). [M+H] Calc'd for C21H17N3O2, 344. Found, 344.
Example 113
2-[1-[2-(3-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 20% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 3-chlorophenethyl bromide according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 3.12 (2H, t, J=7.3 Hz), 4.29 (2H, t, J=7.3 Hz), 7.17 (1H, d, J=7.1 Hz), 7.26-7.33 (2H, m), 7.35 (1H, s), 7.58 (1H, dd, J=1.6 and 5.0 Hz), 7.66 (1H, s), 7.84 (1H, s), 8.26 (1H, s), 8.63 (1H, d, J=4.7 Hz). [M+H] Calc'd for C17H14ClN3O2, 329. Found, 329.
Example 114
2-[1-(2-cyclohexylethyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 31% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-bromo-2-cyclohexylethane according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 0.91-0.97 (2H, m), 1.10-1.21 (5H, m), 1.61-1.73 (7H, m), 4.03 (2H, t, J=7.3 Hz), 7.52 (1H, d, J=4.6 Hz), 7.73 (2H, s), 8.29 (1H, s), 8.47 (1H, d, J=4.6 Hz). [M+H] Calc'd for C17H21N3O2, 300. Found, 300.
Example 115
2-[1-(cyclohexylmethyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 19% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and (bromomethyl)cyclohexane according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 0.89-0.98 (2H, m), 1.10-1.23 (3H, m), 1.54-1.73 (6H, m), 3.85 (2H, d, J=7.1 Hz), 7.49 (1H, d, J=5.2 Hz), 7.67 (2H, d, J=6.9 Hz), 8.24 (1H, s), 8.41 (1H, d). [M+H] Calc'd for C16H19N3O2, 286. Found, 286.
Example 116
2-[1-(1,2,3,4-tetrahydronaphthalen-1-ylmethyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 5% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(bromomethyl)-1,2,3,4-tetrahydronaphthalene according to the procedure for the preparation of Example 43. 1HNMR (400 MHz, DMSO): δ 1.46-1.49 (1H, m), 1.63-1.67 (2H, m), 1.83-1.86 (1H, m), 2.73-2.89 (3H, d), 4.09-4.15 (1H, m), 4.27-4.31 (1H, m), 7.09-7.15 (3H, m), 7.29 (1H, t, J=4.4 Hz), 7.49 (1H, d, J=3.8 Hz), 7.72 (1H, s), 7.79 (1H, s), 8.26 (1H, s), 8.41 (1H, d). [M+H] Calc'd for C20H19N3O2, 334. Found, 334.
Example 117
2-[1-[[3-(trifluoromethyl)phenyl]methyl]imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 13% yield from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 3-trifluoromethylbenzyl bromide according to the procedure for the preparation of Example 43 using room temperature, followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 5.36 (2H, s), 7.52 (1H, d, J=4.1 Hz), 7.62-7.71 (3H, m), 7.79 (1H, s), 7.84 (1H, s), 7.94 (1H, s), 8.25 (1H, s), 8.51 (1H, d, J=4.7 Hz). [M+H] Calc'd for C17H12F3N3O2, 348. Found, 348.
Example 118
methyl 2-[1-[2-(2-fluorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylate




The title compound was prepared in 41% yield from 2-[1-[2-(2-fluorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxylic acid (Example 93) according to the procedure for the preparation of Example 8. 1HNMR (400 MHz, DMSO): δ 3.14 (2H, t, J=7.2 Hz), 3.91 (3H, s), 4.29 (2H, t, J=7.0 Hz), 7.09-7.18 (2H, m), 7.23-7.28 (2H, m), 7.60 (1H, dd, J=1.4 and 4.9 Hz), 7.65 (1H, s), 7.83 (1H, s), 8.27 (1H, s), 8.67 (1H, d, J=5.2 Hz). [M+H] Calc'd for C18H16FN3O2, 326. Found, 326.
Example 119
methyl 2-[1-[(3-phenylphenyl)methyl]imidazol-4-yl]pyridine-4-carboxylate




The title compound was prepared in 60% yield from 2-[1-[(3-phenylphenyl)methyl]imidazol-4-yl]pyridine-4-carboxylic acid (Example 111) according to the procedure for the preparation of Example 8. 1H NMR (400 MHz, DMSO-d6): δ 3.93 (3H, s), 5.63 (2H, s), 7.42 (1H, t, J=7.5 Hz), 7.47-7.56 (3H, m), 7.69 (4H, d, J=7.7 Hz), 7.86 (3H, d, J=9.3 Hz), 8.42 (1H, s). [M+H] Calc'd for C23H19N3O2, 370. Found, 370.
Example 120
2-[5-[2-(cyclopropylmethoxy)-4-fluorophenyl]-1-methylimidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 10% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid methyl ester and 2-(cyclopropylmethoxy)-4-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.10 (2H, m), 0.32-0.39 (2H, m), 0.88-0.93 (1H, m), 3.44 (3H, s), 3.69 (1H, m), 3.81 (1H, m), 6.80 (1H, td, J=2.4 and 8.4 Hz), 6.96 (1H, dd, J=2.4 and 11.6 Hz), 7.27 (1H, t, J=7.7 Hz), 7.45 (1H, dd, J=1.5 and 5.1 Hz), 7.84 (1H, s), 8.28 (1H, s), 8.31 (1H, d, J=5.0 Hz). [M+H] Calc'd for C20H18FN3O3, 368. Found, 368.
Example 121
2-[5-[2-(cyclopropylmethoxy)-4,5-difluorophenyl]-1-methylimidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 5% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid methyl ester and 2-(cyclopropylmethoxy)-4,5-difluorophenylboronic acid pinacol ester according to the procedure for the preparation of Example 3, part A followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.29-0.32 (2H, m), 0.53-0.58 (2H, m), 1.22 (1H, m), 3.43 (3H, s), 3.82 (2H, d, J=7.0 Hz), 6.82 (1H, br s), 7.09-7.14 (1H, m), 7.27 (1H, t, J=7.7 Hz), 7.42 (1H, d, J=3.6 Hz), 7.90 (1H, s), 8.20 (1H, d, J=4.3 Hz), 8.30 (1H, s). [M+H] Calc'd for C20H12F2N3O3, 386. Found, 386.
Example 122
2-[5-[2-(cyclopropylmethoxy)-6-fluorophenyl]-1-methylimidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 3% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid methyl ester and 2-(cyclopropylmethoxy)-6-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.12 (2H, m), 0.33-0.40 (2H, m), 0.83-0.94 (1H, m), 3.60-3.70 (1H, m), 3.72-3.84 (1H, m), 6.84 (1H, t, J=8.4 Hz), 6.92 (1H, d, J=8.2 Hz), 7.35 (1H, t, J=5.0 Hz), 7.40 (1H, t, J=7.8 Hz), 7.86 (1H, s), 8.08 (1H, d, J=4.7 Hz), 8.27 (1H, s). [M+H] Calc'd for C20H18FN3O3, 368. Found, 368.
Example 123
2-[5-[2-(cyclopropylmethoxy)-5-methylphenyl]-1-methylimidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 17% yield from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carboxylic acid methyl ester and 2-(cyclopropylmethoxy)-6-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A followed by hydrolysis. 1H NMR (400 MHz, DMSO-d6): δ 0.07-0.10 (2H, m), 0.29-0.37 (2H, m), 0.83-0.86 (1H, m), 2.23 (3H, s), 3.42 (3H, s), 3.59-3.63 (1H, m), 3.72-3.77 (1H, m), 6.95 (1H, d, J=8.5 Hz), 7.04 (1H, s), 7.16 (1H, d, J=8.6 Hz), 7.44 (1H, d, J=4.7 Hz), 7.82 (1H, s), 8.27 (1H, s), 8.31 (1H, d, J=5.1 Hz). [M+H] Calc'd for C21H21N3O3, 364. Found, 364.
PREPARATION 7: 2-(1H-imidazol-4-yl)pyridine-4-carboxamide
A. methyl 2-formylpyridine-4-carboxylate




To a solution of methyl 2-(hydroxymethyl)pyridine-4-carboxylate (30 g, 179.64 mmol) in DCM (1 L) was added MnO2 (93.77 g. 1.0778 mol) at r.t. and stirred overnight. The reaction mixture was then filtered and concentrated to afford the title compound (21.3 g, 72%). [M+H] Calc'd for C8H7NO3, 166. Found, 166.
B. 2-[4-(4-methylphenyl) sulfonyl-4,5-dihydro-1,3-oxazol-5-yl]pyridine-4-carboxamide




To a solution of methyl 2-formylpyridine-4-carboxylate (12 g, 72.7 mmol) and TsMic (12 g, 72.7 mmol) in EtOH (200 mL), was added KCN (487 mg, 7.27 mmol) at r.t., stirred for 20 min, filtered, the solid dried to give the title compound (23 g, 88%). [M+H] Calc'd for C16H15N3O4S, 361. Found, 361.
C. 2-(1H-imidazol-4-yl)pyridine-4-carboxamide




2-[4-(4-methylphenyl)sulfonyl-4,5-dihydro-1,3-oxazol-5-yl]pyridine-4-carboxamide (23 g, 63.98 mmol) was added to a solution of NH3 in MeOH (5 g/120 mL) and stirred overnight at 125° C., concentrated and purified by flash column chromatography to give the title compound (5 g, 36.8%). [M+H] Calc'd for C9H8N4O, 189. Found, 189.
Example 124
2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxamide




A mixture of 2-(1H-imidazol-4-yl)pyridine-4-carboxamide (400 mg, 2.13 mmol, PREPARATION 7), 1-(2-bromo-ethyl)-2-chloro-benzene (557 mg, 2.55 mmol) and K2CO3 (587 mg, 4.26 mmol) in DMF (10 mL) was stirred overnight at 80° C. LC/MS showed the reaction was completed. It was then purified by flash column chromatography to give the title compound (228 mg, 33%) as a yellow solid. [M+H] Calc'd for C17H15ClN4O, 327. Found, 327.
B. 2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile




To a solution of 2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carboxamide (1 eq) and pyridine (3 eq) in DCM was added TFAA (2 eq) slowly at 0° C., then the mixture was stirred for 2 hr at 0° C., the solution was washed by H2O, NaHCO3 and brine. The collected organic fractions were concentrated and purified by FCC (PE/EA=1/4) to give the title compound (53%). [M+H] Calc'd for C17H13ClN4, 309. Found, 309.
C. 2-[5-bromo-1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile




To a solution of 2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile (1 eq) in DCM (10 mL) was added NBS (1.05 eq) at rt and stirred for 3 hr at rt. Washed by H2O, dried and concentrated to afford the title compound (95%). [M+H] Calc'd for C17H12BrClN4, 387. Found, 387.
D. 2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile




A mixture of 2-[5-bromo-1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile (1 eq), 4-fluorophenylboronic acid, Pd(dppf)Cl2 (0.1 eq) and Na2CO3 (2 eq, 2 M) in dioxane was refluxed overnight under N2. The reaction mixture was concentrated and purified by FCC (DCM/MeOH=20/1) to give the title compound (48%). [M+H] Calc'd for C23H16ClFN4, 403. Found, 403.
E. 2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid




A mixture of 2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile (1 eq) and NaOH (5 eq, 2 M) in MeOH was refluxed overnight, concentrated and acidified to pH=3-4, purified by HPLC to give the title compound (43%). 1H NMR (300 MHz, CD3OD): δ 3.07 (2H, t, J=6.6 Hz), 4.27 (2H, t, J=6.6 Hz), 7.00-7.33 (8H, m), 7.68 (1H, d, J=5.1 Hz), 7.93-7.95 (2H, m), 8.52 (1H, d, J=4.8 Hz). [M+H] Calc'd for C23H17ClFN3O2, 422. Found, 422.
Example 125
2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carboxamide




The title compound was prepared in 60% yield from 2-(1H-imidazol-4-yl)pyridine-4-carboxamide (PREPARATION 7) and cyclopropylmethyl bromide according to the procedure for the preparation of Example 124, part A. [M+H] Calc'd for C13H14N4O, 327. Found, 327.
B. 2-[1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 43% yield from 2-[1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C13H12N4, 225. Found, 225.
C. 2-[5-bromo-1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 80% yield from 2-[1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part C. [M+H] Calc'd for C13H11BrN4, 303. Found, 303.
D. 2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 50% yield from 2-[5-bromo-1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part D. [M+H] Calc'd for C19H15FN4, 319. Found, 319.
E. 2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 44% yield from 2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part E. 1H NMR (300 MHz, CD3OD): δ 0.23-0.26 (2H, m), 0.52-0.58 (2H, m), 1.05 (1H, m), 3.79 (2H, d, J=7.2 Hz), 7.18-7.24 (2H, m), 7.40-7.44 (2H, m), 7.63 (1H, d, J=6.3 Hz), 7.92-7.97 (2H, m), 8.47 (1H, d, J=4.5 Hz). [M+H] Calc'd for C19H16FN3O2, 338. Found, 338.
Example 126
2-[5-(4-chlorophenyl)-1-(cyclopropylmethyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 26% yield according to the procedure for the preparation of Example 125. 1H NMR (300 MHz, CD3OD): δ 0.35-0.37 (2H, m), 0.67-0.70 (2H, m), 1.18-1.21 (1H, m), 3.93 (2H, d, J=5.1 Hz), 7.60-7.73 (5H, m), 7.87-7.88 (1H, m), 8.83 (1H, m), 9.13 (1H, m). [M+H] Calc'd for C19H16ClN3O2, 354. Found, 354.
Example 127
2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid
A. 2-[5-bromo-1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 82% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part C. [M+H] Calc'd for C16H10BrClN4, 373. Found, 373.
B. 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile




A mixture of 2-[5-bromo-1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile (270 mg, 0.726 mmol), 4-fluorophenylboronic acid (203 mg, 1.452 mmol), Pd(dppf)Cl2 (60 mg, 0.0726 mmol) and Na2CO3 (0.3 mL, 1.452 mmol, 2 M) in dioxane (10 mL) was refluxed overnight under N2, concentrated and purified by FCC (DCM/MeOH=20/1) to give the title compound (250 mg, 88%). [M+H] Calc'd for C22H14ClFN4, 389. Found, 389.
C. 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carboxylic acid




The title compound was prepared in 24% yield from 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part E. 1H NMR (300 MHz, CD3OD): δ 5.28 (2H, s), 6.85-6.88 (1H, m), 7.09-7.39 (7H, m), 7.66 (1H, d, J=6.3 Hz), 7.95 (1H, s), 7.80 (1H, s), 8.50 (1H, d, J=5.4 Hz). [M+H] Calc'd for C22H15ClFN3O2, 408. Found, 408.
Example 128
2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carboxamide




A mixture of 2-(1H-imidazol-4-yl)pyridine-4-carboxamide (200 mg, 1.06 mmol, PREPARATION 7), methanesulfonic acid 2-(2-ethoxy-phenyl)-ethyl ester (311 mg, 1.28 mmol) and K2CO3 (294 mg, 2.13 mmol) in DMF (10 mL) was stirred overnight at 70° C., LC/MS showed the reaction was completed, purified by FCC (DCM/MeOH=20/1) to give the title compound (189 mg, 53%) as a yellow solid. [M+H] Calc'd for C19H20N4O2, 337. Found, 337.
B. 2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 47% yield from 2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C19H18N4O, 319. Found, 319.
C. 2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




To a mixture of 2-[1-[2-(2-ethoxyphenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile (1 eq) and NH4Cl (10 eq) in DMF was added NaN3 at rt, then stirred for 2 hr at 110° C. in a microwave oven, LC/MS showed the reaction was completed, acidified to PH=3-4 by conc. HCl, stirred for 1 hr, then adjusted to PH=7-8 by NaOH, concentrated and purified by HPLC to give the title compound (56%). 1H NMR (400 MHz, DMSO): δ 1.36 (3H, t, J=6.4 Hz), 3.06-3.09 (2H, m), 4.02-4.03 (2H, m), 4.25-4.29 (2H, m), 6.82-7.19 (4H, m), 7.69 (1H, s), 7.76-7.81 (2H, m), 8.47 (1H, s), 8.61 (1H, d, J=6.0 Hz). [M+H] Calc'd for C19H19N7O, 362. Found, 362.
Example 129
2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide




A mixture of 2-(1H-imidazol-4-yl)pyridine-4-carboxamide (PREPARATION 7)), 1-bromomethyl-2-chlorobenzene (260 mg, 1.28 mmol) and K2CO3 (176 mg, 1.28 mmol) in DMF (8 mL) was stirred overnight at rt, LC/MS showed the reaction was completed, purified by FCC to give the title compound (83 mg, 42%) as a yellow solid. [M+H] Calc'd for C16H13ClN4O, 313. Found, 313.
B. 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 93% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C16H11ClN4, 295. Found, 295.
C. 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 28% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.42 (2H, s), 7.29-7.31 (1H, m), 7.38-7.41 (2H, m), 7.52-7.55 (1H, m), 7.81 (1H, d, J=5.2 Hz), 7.87 (1H, s), 7.99 (1H, s), 8.52 (1H, s), 8.68 (1H, d, J=4.4 Hz). [M+H] Calc'd for C16H12ClN7, 338. Found, 338.
Example 130
2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide




The title compound was prepared in 51% yield from 2-(1H-imidazol-4-yl)pyridine-4-carboxamide according to the procedure for the preparation of Example 129, part A. [M+H] Calc'd for C16H13ClN4O, 313. Found, 313.
B. 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 40% yield from 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C16H11ClN4, 295. Found, 295.
C. 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 34% yield from 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 5.31 (2H, s), 7.41-7.49 (4H, m), 7.82 (1H, m), 7.98 (1H, s), 8.04 (1H, s), 8.52 (1H, s), 8.68 (1H, d, J=5.1 Hz). [M+H] Calc'd for C16H12ClN7, 338. Found, 338.
Example 131
2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide




The title compound was prepared in 46% yield from 2-(1H-imidazol-4-yl)pyridine-4-carboxamide according to the procedure for the preparation of Example 129, part A. [M+H] Calc'd for C16H13ClN4O, 313. Found, 313.
B. 2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 80% yield from 2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C16H11ClN4, 295. Found, 295.
C. 2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 58% yield from 2-[1-[(4-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 5.30 (2H, s), 7.39-7.48 (4H, m), 7.80-7.82 (1H, m), 7.94 (1H, s), 8.02 (1H, s), 8.51 (1H, s), 8.68 (1H, d, J=5.1 Hz). [M+H] Calc'd for C16H12ClN7, 338. Found, 338.
Example 132
2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 36% yield from 2-[1-[2-(2-chlorophenyl)ethyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile (Example 124, part D) according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 3.07 (2H, t, J=6.6 Hz), 4.26 (2H, t, J=6.6 Hz), 7.19-7.48 (8H, m), 7.77-7.79 (1H, m), 7.95-7.98 (1H, m), 8.83 (1H, br), 9.22 (1H, br). [M+H] Calc'd for C23H17ClFN7, 446. Found, 446.
Example 133
2-[5-(4-chlorophenyl)-1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 20% yield from 2-[5-(4-chlorophenyl)-1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 2.97 (2H, t, J=6.6 Hz), 4.15 (2H, t, J=6.6 Hz), 7.11-7.37 (8H, m), 7.76-7.78 (1H, m), 8.26-8.37 (2H, m), 8.52 (1H, d, J=4.5 Hz). [M+H] Calc'd for C23H17Cl2N7, 462. Found, 462.
Example 134
2-[5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carboxamide




The title compound was prepared in 60% yield from 2-(1H-imidazol-4-yl)pyridine-4-carboxamide (PREPARATION 7) and toluene-4-sulfonic acid 2,2,2-trifluoro-ethyl ester according to the procedure for the preparation Example 128, part A. [M+H] Calc'd for C11H9F3N4O, 271. Found, 271.
B. 2-[1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 40% yield from 2-[1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carboxamide according to the procedure for the preparation of Example 124, part B. [M+H] Calc'd for C11H7F3N4, 253. Found, 253.
C. 2-[5-bromo-1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 40% yield from 2-[1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part C. [M+H] Calc'd for C11H6BrF3N4, 331. Found, 331.
D. 2-[5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared in 48% yield from 2-[5-bromo-1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 124, part D. [M+H] Calc'd for C17H10F4N4, 347. Found, 347.
E. 2-[5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 68% yield from 2-[5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 4.86-4.89 (2H, m), 7.59-7.35 (2H, m), 7.45-7.49 (2H, m), 7.74 (1H, d, J=6.3 Hz), 8.11 (1H, s), 8.47 (1H, d, J=4.2 Hz), 8.54 (1H, s). [M+H] Calc'd for C17H11F4N7, 390. Found, 390.
Example 135
2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 23% yield from 2-[1-(cyclopropylmethyl)-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile (Example 125, part D) according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 0.19-0.21 (2H, m), 0.43-0.46 (2H, m), 0.94 (1H, m), 3.71 (2H, d, J=7.2 Hz), 7.23-7.34 (2H, m), 7.49-7.52 (2H, m), 7.70 (1H, d, J=6.6 Hz), 8.07 (1H, s), 8.37 (1H, d, J=5.1 Hz), 8.46 (1H, s). [M+H] Calc'd for C19H16FN7, 362. Found, 362.
Example 136
2-[5-(4-chlorophenyl)-1-(cyclopropylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 23% yield from 2-[5-(4-chlorophenyl)-1-(cyclopropylmethyl)-imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 0.17-0.221 (2H, m), 0.41-0.45 (2H, m), 0.91-0.94 (1H, m), 3.69 (2H, d, J=4.8 Hz), 7.48-7.63 (5H, m), 7.98-7.99 (1H, m), 8.21-8.22 (1H, m), 8.46 (1H, s). [M+H] Calc'd for C19H16ClN7, 378. Found, 378.
Example 137
2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 41% yield from 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridine-4-carbonitrile (Example 127, part B) according to the procedure for the preparation of Example 128, part C. 1H NMR (300 MHz, DMSO): δ 5.24 (2H, s), 6.75-6.78 (1H, m), 7.16-7.41 (7H, m), 7.74 (1H, d, J=4.5 Hz), 8.10 (1H, s), 8.44 (1H, d, J=5.4 Hz), 8.53 (1H, s). [M+H] Calc'd for C22H15ClFN7, 432. Found, 432.
Example 138
[5-[2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridin-4-yl]tetrazol-2-yl]methyl acetate




To a solution of 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine (50 mg, 0.12 mmol, Example 137) in DMF (5 mL) was added acetic acid bromomethyl ester (20 mg, 0.12 mmol), t-BuOK (27 mg, 0.24 mmol) and KI (40 mg, 0.24 mmol) at 0° C., then the mixture was stirred for 72 hr at rt, H2O was added, extracted with EA, dried, concentrated and purified by HPLC to give the title compound (5 mg, 8.6%). 1H NMR (300 MHz, CD3OD): δ 2.13 (3H, s), 5.38 (2H, s), 6.55 (2H, s), 6.97-6.98 (1H, m), 7.23-7.49 (7H, m), 7.85 (1H, s), 8.10 (1H, d, J=6.0 Hz), 8.28 (1H, m), 8.64 (1H, m). [M+H] Calc'd for C25H19ClFN7O2, 504. Found, 504.
Example 139
[5-[2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]pyridin-4-yl]tetrazol-2-yl]methyl 2,2-dimethylpropanoate




The title compound was prepared in 24% yield from 2-[1-[(2-chlorophenyl)methyl]-5-(4-fluorophenyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine (Example 137) and 2,2-dimethyl-propionic acid chloromethyl ester according to the procedure for the preparation of Example 138. 1H NMR (300 MHz, CD3OD): δ 1.22 (9H, s), 5.30 (2H, s), 6.61 (2H, s), 6.61-6.62 (1H, m), 6.86-6.88 (2H, m), 7.09-7.39 (5H, m), 7.88 (1H, d, J=6.6 Hz), 7.96 (1H, s), 8.29 (1H, s), 8.55 (1H, d, J=5.1 Hz). [M+H] Calc'd for C28H25ClFN7O2, 546. Found, 546.
Example 140
4-(2H-tetrazol-5-yl)-2-[1-[2-[2-(trifluoromethyl)phenyl]ethyl]imidazol-4-yl]pyridine




The title compound was prepared from 2-[1-[2-[2-(trifluoromethyl)phenyl]ethyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 4.35 (2H, t, J=7.5 Hz), 7.47 (2H, t, J=8.7 Hz), 7.62 (1H, t, J=7.0 Hz), 7.72 (1H, d, J=8.0 Hz), 7.81 (1H, d, J=5.8 Hz), 7.93 (1H, br s), 8.50 (1H, s), 8.69 (1H, d, J=5.2 Hz). [M+H] Calc'd for C18H14F3N7, 386. Found, 362.
Example 141
2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 57% yield from 2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.25 (2H, t, J=7.3 Hz), 4.32 (2H, t, J=7.2 Hz), 7.26 (2H, t, J=8.6 Hz), 7.46 (1H, t, J=6.8 Hz), 7.72 (1H, s), 7.78 (1H, d, J=3.9 Hz), 7.86 (1H, s), 8.50 (1H, s), 8.57 (1H, d, J=5.0 Hz). [M+H] Calc'd for C17H14ClN7, 353. Found, 353.
Example 142
2-[1-(2-naphthalen-1-ylethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 41% yield from 2-[1-(2-naphthalen-1-ylethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.61 (2H, t, J=7.5 Hz), 4.41 (2H, t, J=7.4 Hz), 7.43 (1H, t, J=7.1 Hz), 7.53 (1H, m), 7.57 (2H, m), 7.82 (1H, s), 7.83 (2H, m), 7.94 (1H, d, J=8.2 Hz), 8.03 (1H, s), 8.25 (1H, d, J=8.3 Hz), 8.50 (1H, s), 8.63 (1H, d, J=5.2 Hz). [M+H] Calc'd for C21H17N7, 368. Found, 368.
Example 143
2-[1-(1,2,3,4-tetrahydronaphthalen-1-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 17% yield from 2-[1-(1,2,3,4-tetrahydronaphthalen-1-ylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 1.51 (1H, m), 1.64-1.68 (3H, m), 1.83 (1H, m), 2.73 (2H, m), 4.16 (1H, m), 4.32 (1H, m), 7.11 (1H, t, J=4.4 Hz), 7.15 (2H, m), 7.82 (3H, m), 7.95 (1H, s), 8.51 (1H, s), 8.58 (1H, d, J=5.0 Hz). [M+H] Calc'd for C20H19N7, 358. Found, 358.
Example 144
2-[1-(1-phenylpropyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 16% yield from 2-[1-(1-phenylpropyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 0.86 (3H, t, J=7.2 Hz), 2.26 (1H, m), 2.34 (2H, m), 5.33 (1H, t, J=8.0 Hz), 7.32 (1H, t, J=7.2 Hz), 7.39 (2H, t, J=7.5 Hz), 7.47 (1H, s), 7.49 (1H, s), 7.79 (1H, d, J=5.0 Hz), 8.06 (1H, s), 8.08 (1H, s), 8.50 (1H, s), 8.65 (1H, d, J=5.1 Hz). [M+H] Calc'd for C18H17N7, 332. Found, 332.
Example 145
2-[1-(2-methyl-1-phenylpropyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 10% yield from 2-[1-(2-methyl-1-phenylpropyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 0.80 (3H, t, J=6.6 Hz), 0.88 (3H, d, J=6.4 Hz), 4.96 (1H, d, J=11.2 Hz), 7.30 (1H, t, J=7.5 Hz), 7.39 (2H, t, J=7.4 Hz), 7.61 (1H, s), 7.63 (1H, s), 7.78 (1H, d, J=4.2 Hz), 8.07 (1H, s), 8.12 (1H, s), 8.48 (1H, s), 8.62 (1H, d, J=4.8 Hz). [M+H] Calc'd for C19H19N7, 346. Found, 346.
Example 146
2-[1-(1,2,3,4-tetrahydronaphthalen-2-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 7% yield from 2-[1-(1,2,3,4-tetrahydronaphthalen-2-ylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 1.23-1.44 (1H, m), 1.82-1.85 (1H, m), 2.28-2.33 (2H, m), 2.67-2.85 (3H, m), 4.10 (1H, d, J=7.2 Hz), 7.07 (4H, m), 7.81 (1H, d, J=4.6 Hz), 7.97 (1H, s), 8.02 (1H, s), 8.54 (1H, s), 8.69 (1H, d, J=5.1 Hz). [M+H] Calc'd for C20H19N7, 358. Found, 358.
Example 147
2-[1-(2,3-dihydro-1H-inden-2-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 3% yield from 2-[1-(2,3-dihydro-1H-inden-2-ylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 1.78-1.91 (1H, m), 2.07-2.14 (1H, m), 2.67-2.91 (3H, m), 3.67 (1H, m), 4.15 (1H, m), 4.39 (1H, m), 7.14-7.25 (3H, m), 7.24 (1H, d, J=6.6 Hz), 7.77-7.79 (2H, m), 7.91 (1H, s), 8.50 (1H, s), 8.61 (1H, d, J=4.7 Hz). [M+H] Calc'd for C19H17N7, 344. Found, 344.
Example 148
2-[5-(4-fluoro-2-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-(4-fluoro-2-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 2-benzyloxyl-4-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C23H17FN4O, 385. Found, 385.
B. 2-[5-(4-fluoro-2-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 3% yield (two steps) from 2-[5-(4-fluoro-2-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.43 (3H, s), 4.99 (1H, m), 5.10 (1H, m), 6.90 (1H, t, J=6.5 Hz), 7.05 (1H, m), 7.17 (3H, m), 7.38 (1H, t, J=7.4 Hz), 7.47 (1H, m), 7.68-7.75 (2H, m), 7.80 (1H, br s), 8.36 (1H, d, J=5.0 Hz), 8.43 (1H, s). [M+H] Calc'd for C23H18FN7O, 428. Found, 428.
Example 149
2-[5-(2-butoxy-4-fluorophenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-(2-butoxy-4-fluorophenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 2-butoxy-4-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H19FN4O, 351. Found, 351.
B. 2-[5-(2-butoxy-4-fluorophenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 9% yield (two steps) from 2-[5-(2-butoxy-4-fluorophenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 0.64 (3H, t, J=7.4 Hz), 1.04 (2H, q, J=10.3 Hz), 1.34 (2H, m), 3.42 (3H, s), 3.85 (1H, m), 3.96 (1H, m), 6.88 (1H, t, J=8.4 Hz), 7.05 (1H, d, J=10.6 Hz), 7.38 (1H, t, J=7.5 Hz), 7.73 (1H, br s), 8.05 (1H, br s), 8.38 (1H, br s), 8.42 (1H, d, J=5.3 Hz). [M+H] Calc'd for C20H20FN7O, 394. Found, 394.
Example 150
2-[5-[2-(cyclopropylmethoxy)-4-fluorophenyl]-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-[2-(cyclopropylmethoxy)-4-fluorophenyl]-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 2-(cyclopropylmethoxy)-4-fluorophenylboronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H17FN4O, 349. Found, 349.
B. 2-[5-[2-(cyclopropylmethoxy)-4-fluorophenyl]-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 12% yield (two steps) from 2-[5-[2-(cyclopropylmethoxy)-4-fluorophenyl]-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 0.11 (2H, m), 0.33 2H, m), 0.91 (1H, m), 3.46 (3H, s), 3.74 (1H, m), 3.86 (1H, m), 6.87 (1H, d t, J=2.0 and 8.43 Hz), 7.04 (1H, d, J=9.6 Hz), 7.36 (1H, t, J=7.7 Hz), 7.74 (1H, d, J=4.2 Hz), 8.11 (1H, br s), 8.39 (1H, br s), 8.44 (1H, d, J=5.2 Hz). [M+H] Calc'd for C20H18FN7O, 392. Found, 392.
Example 151
2-[1-[(2,6-dichlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[(2,6-dichlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2,6-dichlorobenzyle bromide according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C16H10Cl2N4, 330. Found, 330.
B. 2-[1-[(2,6-dichlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 6% yield from 2-[1-[(2,6-dichlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.53 (2H, s), 7.49 (1H, t, J=8.1 Hz), 7.61 (2H, d, J=7.9 Hz), 7.66 (1H, s), 7.78 (1H, d, J=4.1 Hz), 7.95 (1H, s), 8.48 (1H, s), 8.60 (1H, d, J=5.0 Hz). [M+H] Calc'd for C16H11Cl2N7, 373. Found, 373.
Example 152
4-(2H-tetrazol-5-yl)-2-[1-[[2-(2,2,2-trifluoroethoxy)phenyl]methyl]imidazol-4-yl]pyridine
A. 2-[1-[[2-(2,2,2-trifluoroethoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(bromomethyl)-2-(2,2,2-trifluoromethoxy)benzene according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C18H13F3N4O, 359. Found, 359.
B. 4-(2H-tetrazol-5-yl)-2-[1-[[2-(2,2,2-trifluoroethoxy)phenyl]methyl]imidazol-4-yl]pyridine




The title compound was prepared in 3% yield from 2-[1-[[2-(2,2,2-trifluoroethoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 4.86 (2H, q, J=8.5 Hz), 5.24 (2H, s), 7.07 (1H, t, J=7.3 Hz), 7.16 (1H, d, J=8.5 Hz), 7.32-7.40 (2H, m), 7.73 (1H, d, J=5.3 Hz), 7.75 (1H, s), 7.82 (1H, s), 8.50 (1H, s), 8.53 (1H, d, J=5.0 Hz). [M+H] Calc'd for C18H14F3N7O, 402. Found, 402.
Example 153
2-[1-[[2-(2-methylpropoxy)phenyl]methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[[2-(2-methylpropoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(bromomethyl)-2-(2-methylpropoxyl)benzene according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C20H20N4O, 333. Found, 333.
B. 2-[1-[[2-(2-methylpropoxy)phenyl]methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 17% yield from 2-[1-[[2-(2-methylpropoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 1.00 (6H, d, J=6.7 Hz), 2.08 (1H, m), 3.81 (2H, d, J=6.3 Hz), 5.25 (2H, s), 6.95 (1H, t, J=7.1 Hz), 7.03 (1H, d, J=8.3 Hz), 7.27 (1H, d, J=7.4 Hz), 7.32 (1H, t, J=7.8 Hz), 7.80 (1H, d, J=5.8 Hz), 7.83 (1H, s), 7.93 (1H, s), 8.50 (1H, s), 8.67 (1H, d, J=5.3 Hz). [M+H] Calc'd for C20H21N7O, 376. Found, 376.
Example 154
2-[1-[[2-chloro-3-(trifluoromethyl)phenyl]methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[[2-chloro-3-(trifluoromethyl)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-chloro-3-(trifluoromethyl)benzyl bromide according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C17H10ClF3N4, 363. Found, 363.
B. 2-[1-[[2-chloro-3-(trifluoromethyl)phenyl]methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 20% yield from 2-[1-[[2-chloro-3-(trifluoromethyl)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.54 (2H, s), 7.45 (1H, d, J=7.8 Hz), 7.60 (1H, d, J=7.7 Hz), 7.82 (1H, d, J=3.6 Hz), 7.87 (1H, d, J=7.8 Hz), 7.93 (1H, s), 8.02 (1H, s), 8.54 (1H, s), 8.69 (1H, d, J=5.0 Hz). [M+H] Calc'd for C17H11ClF3N7, 406. Found, 406.
Example 155
2-[1-(naphthalen-1-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-(naphthalen-1-ylmethyl)imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(bromomethyl)naphthalene according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C20H14N4, 311. Found, 311.
B. 2-[1-(naphthalen-1-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 19% yield from 2-[1-(naphthalen-1-ylmethyl)imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.82 (2H, s), 7.45 (1H, d, J=7.0 Hz), 7.53-7.7.65 (3H, m), 7.79 (1H, d, J=4.6 Hz), 7.88 (1H, s), 7.95-8.01 (2H, m), 8.09 (1H, s), 8.23 (1H, d, J=8.3 Hz), 8.51 (1H, s), 8.65 (1H, d, J=4.8 Hz). [M+H] Calc'd for C20H15N7, 354. Found, 354.
Example 156
4-(2H-tetrazol-5-yl)-2-[1-[[2-(trifluoromethoxy)phenyl]methyl]imidazol-4-yl]pyridine
A. 2-[1-[[2-(trifluoromethoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2-(trifluoromethoxy)benzyl bromide according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C17H11F3N4O, 345. Found, 345.
B. 4-(2H-tetrazol-5-yl)-2-[1-[[2-(trifluoromethoxy)phenyl]methyl]imidazol-4-yl]pyridine




The title compound was prepared in 22% yield from 2-[1-[[2-(trifluoromethoxy)phenyl]methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.41 (2H, s), 7.37-7.53 (4H, m), 7.81 (1H, d, J=4.9 Hz), 7.85 (1H, s), 7.96 (1H, s), 8.52 (1H, s), 8.68 (1H, d, J=5.0 Hz). [M+H] Calc'd for C17H12F3N7O, 388. Found, 388.
Example 157
2-[1-[1-(2-chlorophenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[1-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 1-(1-bromomethyl)-2-chloroenzene according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C17H13ClN4, 309. Found, 309.
B. 2-[1-[1-(2-chlorophenyl)ethyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 19% yield from 2-[1-[1-(2-chlorophenyl)ethyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 1.89 (3H, d, J=7.0 Hz), 5.96 (1H, q, J=7.0 Hz), 7.38-7.43 (2H, m), 7.47-7.53 (2H, m), 7.82 (1H, d, J=4.9 Hz), 7.98 (1H, s), 8.08 (1H, s), 8.52 (1H, s), 8.68 (1H, d, J=5.1 Hz). [M+H] Calc'd for C17H14ClN7, 352. Found, 352.
Example 158
2-[1-[(2,3-dichlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[1-[(2,3-dichlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 4) and 2,3-dichlorobenzylbromide according to the procedure for the preparation of Example 43, part A using room temp. [M+H] Calc'd for C16H10Cl2N4, 330. Found, 330.
B. 2-[1-[(2,3-dichlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 19% yield from 2-[1-[(2,3-dichlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): δ 5.48 (2H, s), 7.17 (1H, d, J=7.8 Hz), 7.41 (1H, t, J=7.9 Hz), 7.67 (1H, d, J=8.0 Hz), 7.81 (1H, d, J=1.3 Hz), 7.90 (1H, s), 8.01 (1H, s), 8.53 (1H, s), 8.69 (1H, d, J=5.2 Hz). [M+H] Calc'd for C16H11Cl2N7, 374. Found, 374.
Example 159
2-[5-[4-fluoro-3-(2,2,2-trifluoroethoxy)phenyl]-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-[4-fluoro-3-(2,2,2-trifluoroethoxy)phenyl]-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 4-fluoro-3-(2,2,2-trifluoroethoxy)phenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C18H12F4N4O, 377. Found, 377.
B. 2-[5-[4-fluoro-3-(2,2,2-trifluoroethoxy)phenyl]-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 12% yield (two steps) from 2-[5-[4-fluoro-3-(2,2,2-trifluoroethoxy)phenyl]-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.48 (3H, s), 4.85 (2H, q, J=8.7 Hz), 7.17 (1H, m), 7.39 (1H, t, J=7.8 Hz), 7.47 (1H, d, J=7.6 Hz), 7.73 (1H, br s), 8.01 (1H, br s), 8.48 (2H, d, J=5.1 Hz). [M+H] Calc'd for C18H13F4N7O, 420. Found, 420.
Example 160
2-[5-(4-fluoro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-(4-fluoro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 3-benzyloxy-4-fluorophenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C23H17FN4O, 385. Found, 385.
B. 2-[5-(4-fluoro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 12% yield (two steps) from 2-[5-(4-fluoro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.54 (3H, s), 5.18 (2H, s), 7.05 (1H, m), 7.32-7.44 (7H, m), 7.73 (1H, br s), 7.98 (1H, br s), 8.42 (1H, br s), 8.46 (1H, br s). [M+H] Calc'd for C23H18FN7O, 428. Found, 428.
Example 161
2-[5-(4-chloro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridin
A. 2-[5-(4-chloro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 3-benzyloxy-4-chlorophenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C23H17ClN4O, 401. Found, 401.
B. 2-[5-(4-chloro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridin




The title compound was prepared in 14% yield (two steps) from 2-[5-(4-chloro-3-phenylmethoxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.57 (3H, s), 5.22 (2H, s), 7.06 (1H, dd, J=1.4 and 8.1 Hz), 7.32-7.45 (6H, m), 7.52 (1H, d, J=8.1 Hz), 7.74 (1H, d, J=4.7 Hz), 8.02 (1H, s), 8.46 (1H, d, J=5.1 Hz), 8.50 (1H, s). [M+H] Calc'd for C23H18ClN7O, 444. Found, 444.
Example 162
2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]phenol
A. 2-[5-(4-fluoro-3-hydroxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 4-fluoro-3-hydroxyphenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C16H11FN4O, 295. Found, 295.
B. 2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]phenol




The title compound was prepared in 6% yield (two steps) from 2-[5-(4-fluoro-3-hydroxyphenyl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.51 (3H, s), 6.89 (1H, m), 7.03 (1H, dd, J=1.8 and 8.5 Hz), 7.26 (1H, dt, J=2.9 and 8.4 Hz), 7.77 (1H, d, J=5.2 Hz), 8.08 (1H, s), 8.38 (1H, s), 8.51 (1H, d, J=5.2 Hz). [M+H] Calc'd for C16H12FN7O, 338. Found, 338.
Example 163
2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]-N-phenylbenzamide
A. 5-[5-(4-cyanopyridin-2-yl)-3-methylimidazol-4-yl]-2-fluoro-N-phenylbenzamide




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 4-fluoro-3-(phenyl carbamoyl)phenyl boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C23H16FN5O, 398. Found, 398.
B. 2-fluoro-5-[3-methyl-5-[4-(2H-tetrazol-5-yl)pyridin-2-yl]imidazol-4-yl]-N-phenylbenzamide




The title compound was prepared in 11% yield (two steps) from 5-[5-(4-cyanopyridin-2-yl)-3-methylimidazol-4-yl]-2-fluoro-N-phenylbenzamide according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.57 (3H, s), 7.11 (1H, t, J=7.4 Hz), 7.35 (2H, t, J=7.9 Hz), 7.45 (1H, t, J=9.3 Hz), 7.68-7.78 (5H, m), 8.14 (1H, s), 8.46 (1H, d, J=5.1 Hz), 8.57 (1H, s), 10.48 (1H, s). [M+H] Calc'd for C23H17FN8O, 441. Found, 441.
Example 164
2-[5-(4-fluoronaphthalen-1-yl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine
A. 2-[5-(4-fluoronaphthalen-1-yl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile




The title compound was prepared from 2-(5-bromo-1-methyl-1H-imidazol-4-yl)pyridine-4-carbonitrile (PREPARATION 2) and 4-fluoronaphthalene-1-boronic acid according to the procedure for the preparation of Example 3, part A. [M+H] Calc'd for C20H13FN4, 329. Found, 329.
B. 2-[5-(4-fluoronaphthalen-1-yl)-1-methylimidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared in 13% yield (two steps) from 2-[5-(4-fluoronaphthalen-1-yl)-1-methylimidazol-4-yl]pyridine-4-carbonitrile according to the procedure for the preparation of Example 128, part C. 1H NMR (400 MHz, DMSO): 3.57 (3H, s), 7.11 (1H, t, J=7.4 Hz), 7.35 (2H, t, J=7.9 Hz), 7.45 (1H, t, J=9.3 Hz), 7.68-7.78 (5H, m), 8.14 (1H, s), 8.46 (1H, d, J=5.1 Hz), 8.57 (1H, s), 10.48 (1H, s). [M+H] Calc'd for C20H14FN7, 372. Found, 372.
Example 165
2-(1-(2-chlorobenzyl)-1H-imidazol-4-yl)-4-(2-methyl-2H-tetrazol-5-yl)pyridine




The title compound was prepared in 95% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine (Example 129), MeI and potassium carbonate in DMF. 1H NMR (400 MHz, DMSO): δ 4.49 (3H, s), 5.41 (2H, s), 7.27-7.30 (1H, m), 7.38-7.40 (2H, m), 7.52-7.55 (1H, m), 7.79 (1H, d, J=5.2 Hz), 7.84 (1H, s), 7.96 (1H, s), 8.50 (1H, s), 8.67 (1H, d, J=5.1 Hz). [M+H] Calc'd for C17H14ClN7, 352. Found, 352.
Example 166
(5-(2-(1-(2-chlorobenzyl)-1H-imidazol-4-yl)pyridin-4-yl)-2H-tetrazol-2-yl)methyl pivalate




The title compound was prepared in 15% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine (Example 129), chloroethyl pivalate and potassium carbonate in DMF. 1H NMR (400 MHz, DMSO): δ 1.10 (9H, s), 5.41 (2H, s), 6.70 (2H, s), 7.28-7.30 (1H, m), 7.38-7.40 (2H, m), 7.52-7.54 (1H, m), 7.81-7.83 (3H, m), 7.94 (1H, s), 8.51 (1H, s), 8.68 (1H, d, J=5.1 Hz). [M+H] Calc'd for C22H22ClN7O2, 452. Found, 452.
Example 167
(5-(2-(1-(2-chlorobenzyl)-1H-imidazol-4-yl)pyridin-4-yl)-2H-tetrazol-2-yl)methyl acetate




The title compound was prepared in 15% yield from 2-[1-[(2-chlorophenyl)methyl]imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine (Example 129), chloromethyl acetate and potassium carbonate in DMF. 1H NMR (400 MHz, DMSO): δ 2.12 (3H, s), 5.41 (2H, s), 6.67 (2H, s), 7.27-7.29 (1H, m), 7.38-7.41 (2H, m), 7.53-7.55 (1H, m), 7.81 (1H, s), 7.94 (1H, s), 8.51 (1H, s), 8.68 (1H, d, J=5.0 Hz). [M+H] Calc'd for C19H16ClN7O2, 410. Found, 410.
Example 168
(5-(2-(1-((1,2,3,4-tetrahydronaphthalen-1-yl)methyl)-1H-imidazol-4-yl)pyridin-4-yl)-2H-tetrazol-2-yl)methyl pivalate




The title compound was prepared in 18% yield from 2-[1-(1,2,3,4-tetrahydronaphthalen-1-ylmethyl)imidazol-4-yl]-4-(2H-tetrazol-5-yl)pyridine according to the procedure for the preparation of Example 167. 1H NMR (400 MHz, DMSO): 1.12 (9H, s), 1.49 (1H, m), 1.64-1.66 (2H, m), 1.84 (1H, m), 2.67 (3H, m), 4.17 (1H, m), 4.32 (1H, m), 6.71 (2H, s), 7.12 (1H, t, J=3.7 Hz), 7.15 (2H, m), 7.30 (1H, t, J=4.9 Hz), 7.82 (1H, s), 7.83 (1H, s), 7.95 (1H, s), 8.52 (1H, s), 8.70 (1H, d, J=5.0 Hz). [M+H] Calc'd for C26H29N7O2, 472. Found, 472.
Example 169
2-(1-(3-chlorobenzyl)-5-(2-(cyclopropylmethoxy)-4-fluorophenyl)-1H-imidazol-4-yl)-4-(2H-tetrazol-5-yl)pyridine




The title compound was prepared from 2-[1-[(3-chlorophenyl)methyl]imidazol-4-yl]pyridine-4-carbonitrile (Example 130, part B) according to the procedure for the preparation of Example 137. 1H NMR (300 MHz, DMSO): δ 0.05 (2H, m), 0.33 (2H, m), 0.89 (1H, m), 3.63 (1H, m), 3.73 (1H, m), 5.08 (1H, d, J=16 Hz), 5.16 (1H, d, J=15 Hz), 6.77 (1H, t, J=8.0 Hz), 6.87-6.94 (3H, s & m), 7.17 (1H, t, J=7.0 Hz), 7.23-7.29 (2H, s & m), 7.73 (1H, m), 8.16 (1H, m), 8.42 (1H, d, J=5.0 Hz), 8.53 (1H, s). [M+H] Calc'd for C26H21ClFN7O, 502. Found, 502.
II. Biological Evaluation
Example 1
In Vitro Enzyme Inhibition Assay
This assay determines the ability of a test compound to inhibit Jarid1A, Jarid1B, JMJD2C, and JMJD2A demethylase activity. Baculovirus expressed Jarid1A (GenBank Accession #NM—001042603, AA1-1090) was purchased from BPS Bioscience (Cat#50110). Baculovirus expressed Jarid1B (GenBank Accession #NM—006618, AA 2-751) was purchased from BPS Bioscience (Cat #50121) or custom made by MolecularThroughput. Baculovirus expressed JMJD2C (GenBank Accession #BC143571, AA 2-372) was purchased from BPS Bioscience (Cat#50105). Baculovirus expressed JMJD2A (GenBank Accession #NM—014663, AA 1-350) was purchased from BPS Bioscience (Cat#50123). Baculovirus expressed FBXL10 (GenBank Accession #NM—032590, AA 1-650) was purchased from BPS Bioscience (Cat#50120).
Jarid1A Assay
The enzymatic assay of Jarid1A activity is based upon Time Resolved-Fluorescence Resonance Energy Transfer (TR-FRET) detection. The ability of test compounds to inhibit the activity of Jarid1A was determined in 384-well plate format under the following reaction conditions: 1 nM Jarid1A, 300 nM H3K4me3-biotin labeled peptide (Anaspec cat #64357), 2 μM alpha-ketoglutaric acid in assay buffer of 50 mM HEPES, pH7.3, 0.005% Brij35, 0.5 mM TCEP, 0.2 mg/ml BSA, 50 μM sodium L-ascorbate, and 2 μM ammonium iron(II) sulfate. Reaction product was determined quantitatively by TR-FRET after the addition of detection reagent Phycolink Streptavidin-allophycocyanin (Prozyme) and Europium-anti-mono- or di-methylated histone H3 lysine 4 (H3K4me1-2) antibody (PerkinElmer) in the presence of 5 mM EDTA in LANCE detection buffer (PerkinElmer) at a final concentration of 25 nM and 1 nM, respectively.
The assay reaction was initiated by the following: 2 μl of the mixture of 900 nM H3K4me3-biotin labeled peptide and 6 μM alpha-ketoglutaric acid with 2 μl of 11-point serial diluted inhibitor in 3% DMSO was added to each well of plate, followed by the addition of 2 μl of 3 nM Jarid1A to initiate the reaction. The reaction mixture was incubated at room temperature for 30 minutes, and terminated by the addition of 6 μl of 5 mM EDTA in LANCE detection buffer containing 50 nM Phycolink Streptavidin-allophycocyanin and 2 nM Europium-anti-H3K4me1-2 antibody. Plates were read by EnVisionMultilabel Reader in TR-FRET mode (excitation at 320 nm, emission at 615 nm and 665 nm) after 1 hour incubation at room temperature. A ratio was calculated (665/615) for each well and fitted to determine inhibition constant (IC50).
Jarid1B Assay
The ability of test compounds to inhibit the activity of Jarid1B was determined in 384-well plate format under the following reaction conditions: 0.8 nM Jarid1B, 300 nM H3K4me3-biotin labeled peptide (Anaspec cat #64357), 2 μM alpha-ketoglutaric acid in assay buffer of 50 mM HEPES, pH7.3, 0.005% Brij35, 0.5 mM TCEP, 0.2 mg/ml BSA, 50 μM sodium L-ascorbate, and 2 μM ammonium iron(II) sulfate. Reaction product was determined quantitatively by TR-FRET after the addition of detection reagent Phycolink Streptavidin-allophycocyanin (Prozyme) and Europium-anti-mono- or di-methylated histone H3 lysine 4 (H3K4me1-2) antibody (PerkinElmer) in the presence of 5 mM EDTA in LANCE detection buffer (PerkinElmer) at a final concentration of 25 nM and 1 nM, respectively.
The assay reaction was initiated by the following: 2 μl of the mixture of 900 nM H3K4me3-biotin labeled peptide and 6 μM alpha-ketoglutaric acid with 2 μl of 11-point serial diluted inhibitor in 3% DMSO was added to each well of the plate, followed by the addition of 2 μl of 2.4 nM Jarid1B to initiate the reaction. The reaction mixture was incubated at room temperature for 30 minutes, and terminated by the addition of 6 μl of 5 mM EDTA in LANCE detection buffer containing 50 nM Phycolink Streptavidin-allophycocyanin and 2 nM Europium-anti-H3K4me1-2 antibody. Plates were read by EnVisionMultilabel Reader in TR-FRET mode (excitation at 320 nm, emission at 615 nm and 665 nm) after 1 hour incubation at room temperature. A ratio was calculated (665/615) for each well and fitted to determine inhibition constant (IC50).
JMJD2C Assay
The ability of test compounds to inhibit the activity of JMJD2C was determined in 384-well plate format under the following reaction conditions: 0.3 nM JMJD2C, 300 nM H3K9me3-biotin labeled peptide (Anaspec cat #64360), 2 μM alpha-ketoglutaric acid in assay buffer of 50 mM HEPES, pH7.3, 0.005% Brij35, 0.5 mM TCEP, 0.2 mg/ml BSA, 50 μM sodium L-ascorbate, and 2 μM ammonium iron(II) sulfate. Reaction product was determined quantitatively by TR-FRET after the addition of detection reagent Phycolink Streptavidin-allophycocyanin (Prozyme) and Europium-anti-di-methylated histone H3 lysine 9 (H3K9me2) antibody (PerkinElmer) in the presence of 5 mM EDTA in LANCE detection buffer (PerkinElmer) at a final concentration of 50 nM and 1 nM, respectively.
The assay reaction was initiated by the following: 2 μl of the mixture of 900 nM H3K9me3-biotin labeled peptide and 6 μM alpha-ketoglutaric acid with 2 μl of 11-point serial diluted inhibitor in 3% DMSO were added to each well of the plate, followed by the addition of 2 μl of 0.9 nM JMJD2C to initiate the reaction. The reaction mixture was incubated at room temperature for 30 minutes, and terminated by the addition of 6 μl of 5 mM EDTA in LANCE detection buffer containing 100 nM Phycolink Streptavidin-allophycocyanin and 2 nM Europium-anti-H3K9me2 antibody. Plates were read by EnVisionMultilabel Reader in TR-FRET mode (excitation at 320 nm, emission at 615 nm and 665 nm) after 1 hour incubation at room temperature. A ratio was calculated (665/615) for each well and fitted to determine inhibition constant (IC50).
JMJD2A Assay
The ability of test compounds to inhibit the activity of JMJD2A was determined in 384-well plate format under the following reaction conditions: 2 nM JMJD2A, 300 nM H3K9me3-biotin labeled peptide (Anaspec cat #64360), 2 μM alpha-ketoglutaric acid in assay buffer of 50 mM HEPES, pH7.3, 0.005% Brij35, 0.5 mM TCEP, 0.2 mg/ml BSA, 50 μM sodium L-ascorbate, and 2 μM ammonium iron(II) sulfate. Reaction product was determined quantitatively by TR-FRET after the addition of detection reagent Phycolink Streptavidin-allophycocyanin (Prozyme) and Europium-anti-di-methylated histone H3 lysine 9 (H3K9me2) antibody (PerkinElmer) in the presence of 5 mM EDTA in LANCE detection buffer (PerkinElmer) at a final concentration of 50 nM and 1 nM, respectively.
The assay reaction was initiated by the following: 2 μl of the mixture of 900 nM H3K9me3-biotin labeled peptide and 6 μM alpha-ketoglutaric acid with 2 μl of 11-point serial diluted inhibitor in 3% DMSO were added to each well of plate, followed by the addition of 2 μl of 6 nM JMJD2A to initiate the reaction. The reaction mixture was incubated at room temperature for 30 minutes, and terminated by the addition of 6 μl of 5 mM EDTA in LANCE detection buffer containing 100 nM Phycolink Streptavidin-allophycocyanin and 2 nM Europium-anti-H3K9me2 antibody. Plates were read by EnVisionMultilabel Reader in TR-FRET mode (excitation at 320 nm, emission at 615 nm and 665 nm) after 1 hour incubation at room temperature. A ratio was calculated (665/615) for each well and fitted to determine inhibition constant (IC50).
FBXL10 Assay
The ability of test compounds to inhibit the activity of FBXL10 was determined in 384-well plate format under the following reaction conditions: 0.3 nM FBXL10, 30 nM H3K36me2-biotin labeled peptide (Anaspec cat #64442), 0.2 μM alpha-ketoglutaric acid in assay buffer of 50 mM HEPES, pH7.3, 0.005% Brij35, 0.5 mM TCEP, 0.2 mg/ml BSA, 50 μM sodium L-ascorbate, and 5 μM ammonium iron(II) sulfate. Reaction product was determined quantitatively by AlphaScreen detection after the addition of detection reagents anti-H3K36me1 antibody, AlphaScreen® Streptavidin-coated Donor beads, and AlphaScreen® Protein A Acceptor beads in 50 mM HEPES, pH7.3, 10 mM NaCl, 0.005% Brij35, 5 mM EDTA, 2 mg/ml BSA to final 10 μg/ml beads.
The assay reaction was initiated by the following: 3 μl of the mixture of 90 nM H3K36me2-biotin labeled peptide and 0.6 μM alpha-ketoglutaric acid with 3 μl of 11-point serial diluted inhibitor in 3% DMSO were added to each well of 384 well Proxiplate (Perkin Elmer), followed by the addition of 3 μl of 0.9 nM FBXL10 to initiate the reaction. The reaction mixture was incubated at room temperature for 30 minutes, and terminated by the addition of 3 μl of 50 mM HEPES, pH7.3, 10 mM NaCl, 0.005% Brij35, 5 mM EDTA, 2 mg/ml BSA containing appropriate dilution of anti H3K36me1 antibody. Plates were incubated at room temperature for 40 minutes, followed by addition of 3 μl of 50 μg/ml AlphaScreen® Streptavidin-coated Donor beads and AlphaScreen® Protein A Acceptor beads in 50 mM HEPES, pH7.3, 10 mM NaCl, 0.005% Brij35, 5 mM EDTA, 2 mg/ml BSA. Plates were read by EnVisionMultilabel Reader in AlphaScreen mode after a minimum of 2 hour or up to overnight incubation at room temperature. The AlphaScreen signal for each well was used to determine inhibition constant (IC50).
The ability of the compounds disclosed herein to inhibit demethylase activity was quantified and the respective IC50 value was determined. Table 3 provides the IC50 values of various compounds disclosed herein.













TABLE 3







IC50
IC50
IC50
IC50
IC50




Jarid1A
Jarid1B
JMJD2C
JMJD2A
FBXL10


Ex.
NAME
(nM)
(nM)
(nM)
(nM)
(nM)





















1
2-(1-methyl-1H-imidazol-4-
A
A
A
A
A



yl)pyridine-4-carboxylic acid


2
2-(5-bromo-1-methyl-1H-
A
A
B

B



imidazol-4-yl)pyridine-4-



carboxylic acid


3
2-[5-(3-hydroxy-4-methylphenyl)-
A
A
C

B



1-methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


4
2-[1-methyl-5-(4-methylphenyl)-
A
A
C

B



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


5
2-[5-(4-ethylphenyl)-1-methyl-
A
A
C

B



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


6
2-{1-methyl-5-[4-
A
A
C

B



(trifluoromethyl)phenyl]-1H-



imidazol-4-yl}pyridine-4-



carboxylic acid


7
2-[5-(4-cyclopropylphenyl)-1-
A
A
C

B



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


8
methyl 2-[5-(4-



cyclopropylphenyl)-1-methyl-1H-



imidazol-4-yl]pyridine-4-



carboxylate


9
2-[5-(4-tert-butylphenyl)-1-
B
B
C



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


10
2-{1-methyl-5-[3-
B
B
C



(methylcarbamoyl)phenyl]-1H-



imidazol-4-yl}pyridine-4-



carboxylic acid


11
2-{5-[3-(hydroxymethyl)phenyl]-
B
B
C

B



1-methyl-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


12
2-[5-(4-methoxyphenyl)-1-methyl-
B
B
C

B



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


13
2-{1-methyl-5-[4-
B
B
C

B



(trifluoromethoxy)phenyl]-1H-



imidazol-4-yl}pyridine-4-



carboxylic acid


14
2-[5-(4-ethoxyphenyl)-1-methyl-
B
B
C

B



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


15
2-{1-methyl-5-[4-(1H-pyrazol-1-
A
A
B

B



yl)phenyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


16
2-{5-[4-
A
A
B

B



(cyclopropylmethoxy)phenyl]-1-



methyl-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


17
2-(5-{4-[1-
A
A
B



(hydroxymethyl)cyclopropyl]phenyl}-



1-methyl-1H-imidazol-4-



yl)pyridine-4-carboxylic acid


18
2-{1-methyl-5-[4-(pyrrolidin-1-
A
A
B



yl)phenyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


19
2-[5-(4-chlorophenyl)-1-methyl-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


20
2-[5-(3-chlorophenyl)-1-methyl-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


21
2-[5-(4-ethynylphenyl)-1-methyl-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


22
2-[5-(1H-indol-6-yl)-1-methyl-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


23
2-[5-(4-fluorophenyl)-1-methyl-
A
A
B
B
A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


24
2-[5-(3-fluorophenyl)-1-methyl-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


25
2-(5-{4-[1-
A
A
C



(methoxymethyl)cyclopropyl]phenyl}-



1-methyl-1H-imidazol-4-



yl)pyridine-4-carboxylic acid


26
2-[5-(4-chloro-2-methylphenyl)-1-
A
B
C



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


27
2-{5-[4-chloro-2-
A
A
C

A



(trifluoromethyl)phenyl]-1-



methyl-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


28
2-[5-(3,4-dichlorophenyl)-1-
A
A
B

B



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


29
2-[5-(4-chloro-3-fluorophenyl)-1-
A
A
B

A



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


30
2-[5-(4-chloro-3-methoxyphenyl)-
A
A
B

A



1-methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


31
2-{5-[4-chloro-3-
A
A
B

B



(trifluoromethyl)phenyl]-1-



methyl-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


32
2-[5-(4-chloro-2-ethoxyphenyl)-1-
A
A
C

B



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


33
2-[5-(2,4-dichlorophenyl)-1-
A
A
B

A



methyl-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


34
2-(1-methyl-5-{4-[1-
A
A
B



(trifluoromethyl)cyclopropyl]phenyl}-



1H-imidazol-4-yl)pyridine-4-



carboxylic acid


35
2-[5-(4-chloro-3-fluorophenyl)-1-
A
A
B

A



propyl-1H-imidazol-4-yl]pyridine-



4-carboxylic acid


36
2-[5-(4-chloro-3-fluorophenyl)-1-
A
A
C

A



(3-methoxypropyl)-1H-imidazol-



4-yl]pyridine-4-carboxylic acid


37
2-[5-(4-chloro-3-fluorophenyl)-1-
A
A
C

A



(2-methoxyethyl)-1H-imidazol-4-



yl]pyridine-4-carboxylic acid


38
2-[1-[2-[(4-fluorophenyl)methyl-
A
A
A
A
A



methylamino]ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


39
2-{5-(4-chloro-3-fluorophenyl)-1-
A
A
A

A



[2-(dimethylamino)ethyl]-1H-



imidazol-4-yl}pyridine-4-



carboxylic acid


40
2-{1-[2-(dimethylamino)ethyl]-
A
A
A



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


41
2-(1-propyl-1H-imidazol-4-
A
A
A

A



yl)pyridine-4-carboxylic acid


42
2-{1-[3-(dimethylamino)propyl]-
A
A
A



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


43
2-{1-[2-(pyrrolidin-1-yl)ethyl]-
A
A
A
A
C



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


44
methyl 2-{1-[2-(pyrrolidin-1-



yl)ethyl]-1H-imidazol-4-



yl}pyridine-4-carboxylate


45
2-{1-[2-(morpholin-4-yl)ethyl]-
C
B
D



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


46
2-{1-[2-(1H-pyrazol-1-yl)ethyl]-
B
B
C

B



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


47
2-[1-(pyridin-2-ylmethyl)-1H-
A
A
B

A



imidazol-4-yl]pyridine-4-



carboxylic acid


48
2-(1-{2-[2-
A
A
A
A
B



(dimethylamino)ethoxy]ethyl}-



1H-imidazol-4-yl)pyridine-4-



carboxylic acid


49
2-[1-(1-methylpiperidin-4-yl)-1H-
A
A
A

B



imidazol-4-yl]pyridine-4-



carboxylic acid


50
2-{1-[(1-methylpiperidin-4-
A
A
A
A
C



yl)methyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


51
2-[1-(tetrahydrofuran-2-ylmethyl)-
A
A
B

A



1H-imidazol-4-yl]pyridine-4-



carboxylic acid


52
2-[1-(pyrrolidin-3-yl)-1H-
A
A
A

B



imidazol-4-yl]pyridine-4-



carboxylic acid


53
2-[1-(pyrrolidin-2-ylmethyl)-1H-
A
A
A

B



imidazol-4-yl]pyridine-4-



carboxylic acid


54
2-{1-[(4-methylmorpholin-2-
A
A
A

A



yl)methyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


55
2-{1-[(1-methylpiperidin-3-
A
A
A

A



yl)methyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


56
methyl 2-(1-{2-



[benzyl(methyl)amino]ethyl}-1H-



imidazol-4-yl)pyridine-4-



carboxylate


57
2-(1-{2-
A
A
A

A



[benzyl(methyl)amino]ethyl}-1H-



imidazol-4-yl)pyridine-4-



carboxylic acid


58
2-(1-{2-
A
A
B
B
A



[methyl(phenyl)amino]ethyl}-1H-



imidazol-4-yl)pyridine-4-



carboxylic acid


59
2-(1-{2-
A
A
A
A
B



[(cyclopropylmethyl)(methyl)amino]eth-



yl}-1H-imidazol-4-



yl)pyridine-4-carboxylic acid


60
2-{1-[2-(2-oxopyrrolidin-1-
A
A
B
A
A



yl)ethyl]-1H-imidazol-4-



yl}pyridine-4-carboxylic acid


61
2-{1-[2-(pyrrolidin-1-yl)propyl]-
A
A
A



1H-imidazol-4-yl}pyridine-4-



carboxylic acid


62
2-(1-methyl-1H-imidazol-4-yl)-4-
B
B
D
D
A



(2H-tetrazol-5-yl)pyridine


63
2-{1-[2-(pyrrolidin-1-yl)ethyl]-
A
A
B
C
B



1H-imidazol-4-yl}-4-(2H-tetrazol-



5-yl)pyridine


64
N-cyano-2-(1-{2-
A
A
B
D
D



[(cyclopropylmethyl)(methyl)amino]eth-



yl}-1H-imidazol-4-



yl)pyridine-4-carboxamide


65
N-benzyl-2-fluoro-5-[3-methyl-5-


C

A



[4-(2H-tetrazol-5-yl)pyridin-2-



yl]imidazol-4-yl]benzamide


66
2-[1-[2-[methyl-[(3-
A
A
A
A
A



methylphenyl)methyl]amino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


67
2-[1-[2-[methyl-[(4-
A
A
A
A
A



methylphenyl)methyl]amino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


68
2-[1-[2-[methyl-[[4-
A
A
A
A
A



(trifluoromethyl)phenyl]meth-



yl]amino]ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


69
2-[1-[2-[(3-fluorophenyl)methyl-
A
A
A
A
A



methylamino]ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


70
2-[1-[2-[ethyl-[(4-
A
A
A
A
A



fluorophenyl)methyl]amino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


71
2-[1-[2-[cyclopropyl-[(4-
A
A
A
A
A



fluorophenyl)methyl]amino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


72
2-[1-[2-[(4,4-
A
A
A

A



difluorocyclohexyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


73
2-[1-[2-[(3,3-
A
A
A

A



difluorocyclobutyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


74
2-[1-[2-[(4-
A
A
A

A



fluorophenyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


75
2-[1-[2-[[2-
A
A
A



(trifluoromethyl)phenyl]methyl-



amino]ethyl]imidazol-4-yl]pyridine-



4-carboxylic acid


76
2-[1-[2-(1,3-dihydroisoindol-2-
A
A
A

A



yl)ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


77
2-[1-[2-[(2-
A
A
A

A



methoxyphenyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


78
2-[1-[2-[(2-
A
A
A

A



chlorophenyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


79
2-[1-[2-(5-fluoro-1,3-
A
A
A

A



dihydroisoindol-2-



yl)ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


80
2-[1-[2-[(2-
A
A
A

A



ethylphenyl)methylamino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


81
2-[1-[2-(4-chloro-1,3-
A
A
A

A



dihydroisoindol-2-



yl)ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


82
2-[1-[2-(5-chloro-1,3-
A
A
A

A



dihydroisoindol-2-



yl)ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


83
2-[1-[2-(4-cyano-1,3-
A
A
A

A



dihydroisoindol-2-



yl)ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


84
2-[1-[2-[5-(trifluoromethyl)-1,3-
A
A
A

A



dihydroisoindol-2-



yl]ethyl]imidazol-4-yl]pyridine-4-



carboxylic acid


85
2-[1-[2-[(4-chlorophenyl)methyl-
A
A
B

A



cyclopropylamino]ethyl]imidazol-



4-yl]pyridine-4-carboxylic acid


86
2-[1-[2-[cyclopropyl-[(3,4-
A
A
B

A



dichlorophenyl)methyl]amino]eth-



yl]imidazol-4-yl]pyridine-4-



carboxylic acid


87
2-[1-[2-(4-chloro-N-
A
A
B
B
A



methylanilino)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


88
2-[1-[2-(3,4-dihydro-2H-quinolin-
A
A
B
A
A



1-yl)ethyl]imidazol-4-yl]pyridine-



4-carboxylic acid


89
2-[1-[2-(6-chloro-3,4-dihydro-2H-
A
A
B
B
A



quinolin-1-yl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


90
2-[1-[2-(6-fluoro-3,4-dihydro-2H-
A
A
B
A
A



quinolin-1-yl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


91
2-[1-[2-(5-fluoro-2,3-
A
A
B
B
B



dihydroindol-1-yl)ethyl]imidazol-



4-yl]pyridine-4-carboxylic acid


92
2-[1-[2-(4-
A
A
A

A



fluorophenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


93
2-[1-[2-(2-
A
A
A

A



fluorophenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


94
2-[1-[2-(4-
A
A
A



methoxyphenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


95
2-[1-[2-(2-
A
A
B
B
A



methoxyphenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


96
2-[1-[2-(2-
A
A
B
B
A



methylphenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


97
2-[1-[2-(2-
A
A
B
A
A



chlorophenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


98
2-[1-[2-[2-
A
A
A
A
A



(trifluoromethyl)phenyl]ethyl]imid-



azol-4-yl]pyridine-4-carboxylic



acid


99
2-[1-(2,3-dihydro-1H-inden-2-
A
A
B
B
A



yl)imidazol-4-yl]pyridine-4-



carboxylic acid


100
2-(1-benzylimidazol-4-
A
A
B

A



yl)pyridine-4-carboxylic acid


101
2-[1-[(4-
A
A
B
B
A



fluorophenyl)methyl]imidazol-4-



yl]pyridine-4-carboxylic acid


102
2-[1-[(2-
A
A
B
B
A



fluorophenyl)methyl]imidazol-4-



yl]pyridine-4-carboxylic acid


103
2-[1-(1-phenylethyl)imidazol-4-
A
A
A
A
A



yl]pyridine-4-carboxylic acid


104
2-[1-[(3-
A
A
B

A



fluorophenyl)methyl]imidazol-4-



yl]pyridine-4-carboxylic


105
2-[1-[2-(2-chlorophenyl)-2-
A
A
C
B
A



methylpropyl]imidazol-4-



yl]pyridine-4-carboxylic acid


106
2-[1-(1-phenylpropan-2-
A
A
B

A



yl)imidazol-4-yl]pyridine-4-



carboxylic acid


107
2-[1-(1-phenylpropyl)imidazol-4-
A
A
B
A
A



yl]pyridine-4-carboxylic acid


108
2-[1-(2-methyl-1-
A
A
B
B
A



phenylpropyl)imidazol-4-



yl]pyridine-4-carboxylic acid


109
2-[1-(6-fluoro-2,3-dihydro-1H-
A
A
C
B
A



inden-1-yl)imidazol-4-yl]pyridine-



4-carboxylic acid


110
2-[1-(4-fluoro-2,3-dihydro-1H-
A
A
B
B
A



inden-1-yl)imidazol-4-yl]pyridine-



4-carboxylic acid


111
2-[1-[(3-
A
A
C
C
A



phenylphenyl)methyl]imidazol-4-



yl]pyridine-4-carboxylic acid


112
2-[1-(2-naphthalen-1-
A
A
B
B
A



ylethyl)imidazol-4-yl]pyridine-4-



carboxylic acid


113
2-[1-[2-(3-
A
A
B

A



chlorophenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylic acid


114
2-[1-(2-cyclohexylethyl)imidazol-
A
A
B

A



4-yl]pyridine-4-carboxylic acid


115
2-[1-(cyclohexylmethyl)imidazol-
A
A
B

A



4-yl]pyridine-4-carboxylic acid


116
2-[1-(1,2,3,4-
A
A
B
A
A



tetrahydronaphthalen-1-



ylmethyl)imidazol-4-yl]pyridine-



4-carboxylic acid


117
2-[1-[[3-


B

A



(trifluoromethyl)phenyl]methyl]imid-



azol-4-yl]pyridine-4-carboxylic



acid


118
methyl 2-[1-[2-(2-



fluorophenyl)ethyl]imidazol-4-



yl]pyridine-4-carboxylate


119
methyl 2-[1-[(3-



phenylphenyl)methyl]imidazol-4-



yl]pyridine-4-carboxylate


120
2-[5-[2-(cyclopropylmethoxy)-4-
B
A
C
D
A



fluorophenyl]-1-methylimidazol-



4-yl]pyridine-4-carboxylic acid


121
2-[5-[2-(cyclopropylmethoxy)-4,5-


C

A



difluorophenyl]-1-



methylimidazol-4-yl]pyridine-4-



carboxylic acid


122
2-[5-[2-(cyclopropylmethoxy)-6-


C

A



fluorophenyl]-1-methylimidazol-



4-yl]pyridine-4-carboxylic acid


123
2-[5-[2-(cyclopropylmethoxy)-5-


C

B



methylphenyl]-1-methylimidazol-



4-yl]pyridine-4-carboxylic acid


124
2-[1-[2-(2-chlorophenyl)ethyl]-5-


B

A



(4-fluorophenyl)imidazol-4-



yl]pyridine-4-carboxylic acid


125
2-[1-(cyclopropylmethyl)-5-(4-


B

A



fluorophenyl)imidazol-4-



yl]pyridine-4-carboxylic acid


126
2-[5-(4-chlorophenyl)-1-


C

A



(cyclopropylmethyl)imidazol-4-



yl]pyridine-4-carboxylic acid


127
2-[1-[(2-chlorophenyl)methyl]-5-


C

A



(4-fluorophenyl)imidazol-4-



yl]pyridine-4-carboxylic acid


128
2-[1-[2-(2-


C

A



ethoxyphenyl)ethyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


129
2-[1-[(2-
B
A
C
D
A



chlorophenyl)methyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


130
2-[1-[(3-


C

A



chlorophenyl)methyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


131
2-[1-[(4-


C

A



chlorophenyl)methyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


132
2-[1-[2-(2-chlorophenyl)ethyl]-5-


C

A



(4-fluorophenyl)imidazol-4-yl]-4-



(2H-tetrazol-5-yl)pyridine


133
2-[5-(4-chlorophenyl)-1-[2-(2-


C

B



chlorophenyl)ethyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


134
2-[5-(4-fluorophenyl)-1-(2,2,2-


C

A



trifluoroethyl)imidazol-4-yl]-4-



(2H-tetrazol-5-yl)pyridine


135
2-[1-(cyclopropylmethyl)-5-(4-


C

A



fluorophenyl)imidazol-4-yl]-4-



(2H-tetrazol-5-yl)pyridine


136
2-[5-(4-chlorophenyl)-1-


C

A



(cyclopropylmethyl)imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


137
2-[1-[(2-chlorophenyl)methyl]-5-


C

A



(4-fluorophenyl)imidazol-4-yl]-4-



(2H-tetrazol-5-yl)pyridine


138
[5-[2-[1-[(2-


C

C



chlorophenyl)methyl]-5-(4-



fluorophenyl)imidazol-4-



yl]pyridin-4-yl]tetrazol-2-



yl]methyl acetate


139
[5-[2-[1-[(2-


C

C



chlorophenyl)methyl]-5-(4-



fluorophenyl)imidazol-4-



yl]pyridin-4-yl]tetrazol-2-



yl]methyl 2,2-dimethylpropanoate


140
4-(2H-tetrazol-5-yl)-2-[1-[2-[2-
B
A
C
D
A



(trifluoromethyl)phenyl]ethyl]imid-



azol-4-yl]pyridine


141
2-[1-[2-(2-
B
B
C
D
A



chlorophenyl)ethyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


142
2-[1-(2-naphthalen-1-

A
C
D
A



ylethyl)imidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


143
2-[1-(1,2,3,4-

B
C
D
A



tetrahydronaphthalen-1-



ylmethyl)imidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


144
2-[1-(1-phenylpropyl)imidazol-4-
B
A
C
D
A



yl]-4-(2H-tetrazol-5-yl)pyridine


145
2-[1-(2-methyl-1-
B
B
C
D
A



phenylpropyl)imidazol-4-yl]-4-



(2H-tetrazol-5-yl)pyridine


146
2-[1-(1,2,3,4-


C

A



tetrahydronaphthalen-2-



ylmethyl)imidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


147
2-[1-(2,3-dihydro-1H-inden-2-


C

A



ylmethyl)imidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


148
2-[5-(4-fluoro-2-


C

A



phenylmethoxyphenyl)-1-



methylimidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


149
2-[5-(2-butoxy-4-fluorophenyl)-1-


C

A



methylimidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


150
2-[5-[2-(cyclopropylmethoxy)-4-
B
A
C
D
A



fluorophenyl]-1-methylimidazol-



4-yl]-4-(2H-tetrazol-5-yl)pyridine


151
2-[1-[(2,6-


C

A



dichlorophenyl)methyl]imidazol-



4-yl]-4-(2H-tetrazol-5-yl)pyridine


152
4-(2H-tetrazol-5-yl)-2-[1-[[2-


C

A



(2,2,2-



trifluoroethoxy)phenyl]methyl]imid-



azol-4-yl]pyridine


153
2-[1-[[2-(2-


C

B



methylpropoxy)phenyl]methyl]imid-



azol-4-yl]-4-(2H-tetrazol-5-



yl)pyridine


154
2-[1-[[2-chloro-3-
B
A
C
D
A



(trifluoromethyl)phenyl]methyl]imid-



azol-4-yl]-4-(2H-tetrazol-5-



yl)pyridine


155
2-[1-(naphthalen-1-


C

A



ylmethyl)imidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


156
4-(2H-tetrazol-5-yl)-2-[1-[[2-


C

A



(trifluoromethoxy)phenyl]methyl]imid-



azol-4-yl]pyridine


157
2-[1-[1-(2-


C

A



chlorophenyl)ethyl]imidazol-4-



yl]-4-(2H-tetrazol-5-yl)pyridine


158
2-[1-[(2,3-


C

A



dichlorophenyl)methyl]imidazol-



4-yl]-4-(2H-tetrazol-5-yl)pyridine


159
2-[5-[4-fluoro-3-(2,2,2-


C

B



trifluoroethoxy)phenyl]-1-



methylimidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


160
2-[5-(4-fluoro-3-


C

A



phenylmethoxyphenyl)-1-



methylimidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


161
2-[5-(4-chloro-3-


C

A



phenylmethoxyphenyl)-1-



methylimidazol-4-yl]pyridine-4-



carbonitrile


162
2-fluoro-5-[3-methyl-5-[4-(2H-


C

A



tetrazol-5-yl)pyridin-2-



yl]imidazol-4-yl]phenol


163
2-fluoro-5-[3-methyl-5-[4-(2H-


C

B



tetrazol-5-yl)pyridin-2-



yl]imidazol-4-yl]-N-



phenylbenzamide


164
2-[5-(4-fluoronaphthalen-1-yl)-1-


C

A



methylimidazol-4-yl]-4-(2H-



tetrazol-5-yl)pyridine


165
2-(1-(2-chlorobenzyl)-1H-


C

C



imidazol-4-yl)-4-(2-methyl-2H-



tetrazol-5-yl)pyridine


166
(5-(2-(1-(2-chlorobenzyl)-1H-


C

C



imidazol-4-yl)pyridin-4-yl)-2H-



tetrazol-2-yl)methyl pivalate


167
(5-(2-(1-(2-chlorobenzyl)-1H-


C

B



imidazol-4-yl)pyridin-4-yl)-2H-



tetrazol-2-yl)methyl acetate


168
(5-(2-(1-((1,2,3,4-



tetrahydronaphthalen-1-



yl)methyl)-1H-imidazol-4-



yl)pyridin-4-yl)-2H-tetrazol-2-



yl)methyl pivalate


169
2-(1-(3-chlorobenzyl)-5-(2-


C

B



(cyclopropylmethoxy)-4-



fluorophenyl)-1H-imidazol-4-yl)-



4-(2H-tetrazol-5-yl)pyridine





Note:


Biochemical assay IC50 data are designated within the following ranges:


A: ≦100 nM


B: >100 nM to ≦1,000 nM


C: >1,000 nM to ≦10,000 nM


D: >10,000 nM






Example 2
In Vitro Cell-Based Assay
An assay to measure the degree of cellular inhibition of KDM5A and 5B was developed. This quantitative immuno-blotting assay measures the amount tri-methylated histone H3 at amino acid Lysine number 4, a specific substrate and product of the direct enzymatic activity of the histone demethylases KDM5A and KDM5B from extracts of the ZR-75-1 breast cancer cell line.
Assay Principle
This assay is a fluorometric immunoassay for the quantification of tri-methyl H3K4 extracted from cells treated with test compound and is used as a measure of the cellular inhibition of KDM5A/B.
Assay Method
ZR-75-1 (PTEN null, ER+) breast cancer cells numbering 50,000 (ATCC) were seeded into each well of a 96-well tissue culture treated plate and then exposed to an 11 point dilution of test compound with final concentration ranges of test compound ranging from 1250 μM to 10 nM. Cells were left in the presence of test compound for 72 hours. Extracts were prepared containing all of the cellular histone material using detergent based lysis and sonication methods. These lysates were subsequently normalized for total protein content using a colorimetric bicinchonic acid assay (MicroBCA Pierce/Thermo Scientific). Normalized cell extracts were then subjected to typical immuno-blotting procedures using NuPage reagents (Life Technologies). Electrophoretically separated histones were then transferred and immobilized using polyvinylidene difluoride membrane (Immobilon-FL Millipore). The amount of tri-methylated lysine 4 of histone H3 was detected using an antibody specific to the tri-methylated state (Cell Signaling Technologies) and quantified on an infrared imager using a densitometry software package (Odyssey CLx, Image Studio, Li-Cor). This background subtracted densitometry value was reported as a ration of the GAPDH amount for that sample and then calculated as a percent of the DMSO treated sample. The software package XL-fit (IDBS) was then used to calculate a relative IC50 value for the dilution series of a given test compound according to the equation:

fit=(D+((Vmax*(x^n))/((x^n)+(Km^n)))).

Table 4 provides the cellular IC50 values of various compounds disclosed herein.









TABLE 4







IC50


Chemical

ZR-75-1


Synthesis

cell-MOA


Example
Name
(μM)

















1
2-(1-methyl-1H-imidazol-4-yl)pyridine-4-
D



carboxylic acid



3
2-[5-(3-hydroxy-4-methylphenyl)-1-methyl-
D



1H-imidazol-4-yl]pyridine-4-carboxylic acid



7
2-[5-(4-cyclopropylphenyl)-1-methyl-1H-
D



imidazol-4-yl]pyridine-4-carboxylic acid



12
2-[5-(4-methoxyphenyl)-1-methyl-1H-
C



imidazol-4-yl]pyridine-4-carboxylic acid



15
2-{1-methyl-5-[4-(1H-pyrazol-1-yl)phenyl]-
C



1H-imidazol-4-yl}pyridine-4-carboxylic acid



16
2-{5-[4-(cyclopropylmethoxy)phenyl]-1-
C



methyl-1H-imidazol-4-yl}pyridine-4-




carboxylic acid



18
2-{1-methyl-5-[4-(pyrrolidin-1-yl)phenyl]-1H-
C



imidazol-4-yl}pyridine-4-carboxylic acid



19
2-[5-(4-chlorophenyl)-1-methyl-1H-imidazol-
C



4-yl]pyridine-4-carboxylic acid



20
2-[5-(3-chlorophenyl)-1-methyl-1H-imidazol- 
D



4-yl]pyridine-4-carboxylic acid



22
2-[5-(1H-indol-6-yl)-1-methyl-1H-imidazol-4-
D



yl]pyridine-4-carboxylic acid



23
2-[5-(4-fluorophenyl)-1-methyl-1H-imidazol-4-
C



yl]pyridine-4-carboxylic acid



29
2-[5-(4-chloro-3-fluorophenyl)-1-methyl-1H-
D



imidazol-4-yl]pyridine-4-carboxylic acid



35
2-[5-(4-chloro-3-fluorophenyl)-1-propyl-1H-
D



imidazol-4-yl]pyridine-4-carboxylic acid



40
2-{1-[2-(dimethylamino)ethyl]-1H-imidazol-4-
C



yl}pyridine-4-carboxylic acid



41
2-(1-propyl-1H-imidazol-4-yl)pyridine-4-
C



carboxylic acid



43
2-{1-[2-(pyrrolidin-1-yl)ethyl]-1H-imidazol-4-
D



yl}pyridine-4-carboxylic acid



62
2-(1-methyl-1H-imidazol-4-yl)-4-(2H-tetrazol-
D



5-yl)pyridine



71
2-[1-[2-[cyclopropyl-[(4-
C



fluorophenyl)methyl]amino]ethyl]imidazol-4-




yl]pyridine-4-carboxylic acid



72
2-[1-[2-[(4,4-
C



difluorocyclohexyl)methylamino]ethyl]




imidazol-4-yl]pyridine-4-carboxylic acid



88
2-[1-[2-(3,4-dihydro-2H-quinolin-1-
C



yl)ethyl]imidazol-4-yl]pyridine-4-carboxylic




acid



92
2-[1-[2-(4-fluorophenyl)ethyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



93
2-[1-[2-(2-fluorophenyl)ethyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



95
2-[1-[2-(2-methoxyphenyl)ethyl]imidazol-4-
D



yl]pyridine-4-carboxylic acid



96
2-[1-[2-(2-methylphenyl)ethyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



97
2-[1-[2-(2-chlorophenyl)ethyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



98
2-[1-[2-[2-
D



(trifluoromethyl)phenyl]ethyl]imidazol-4-




yl]pyridine-4-carboxylic acid



99
2-[1-(2,3-dihydro-1H-inden-2-yl)imidazol-4-
C



yl]pyridine-4-carboxylic acid



100
2-(1-benzylimidazol-4-yl)pyridine-4-carboxylic
C



acid



101
2-[1-[(4-fluorophenyl)methyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



102
2-[1-[(2-fluorophenyl)methyl]imidazol-4-
C



yl]pyridine-4-carboxylic acid



103
2-[1-(1-phenylethyl)imidazol-4-yl]pyridine-4-
C



carboxylic acid



104
2-[1-[(3-fluorophenyl)methyl]imidazol-4-
D



yl]pyridine-4-carboxylic



105
2-[1-[2-(2-chlorophenyl)-2-
C



methylpropyl]imidazol-4-yl]pyridine-4-




carboxylic acid



106
2-[1-(1-phenylpropan-2-yl)imidazol-4-
C



yl]pyridine-4-carboxylic acid





Note:


Cellular assay IC50 data are designated within the following ranges:


A: ≦0.10 μM


B: >0.10 μM to ≦1.0 μM


C: >1.0 μM to ≦10 μM


D: >10 μM






Example 3
In Vivo Xenograph Study
Time release pellets containing 0.72 mg 17-β Estradiol are subcutaneously implanted into nu/nu mice. MCF-7 cells are grown in RPMI containing 10% FBS at 5% CO2, 37° C. Cells are spun down and re-suspended in 50% RPMI (serum free) and 50% Matrigel at 1×107 cells/mL. MCF-7 cells are subcutaneously injected (100 μL/animal) on the right flank 2-3 days post pellet implantation and tumor volume (length×width2/2) is monitored bi-weekly. When tumors reach an average volume of  ̃200 mm3 animals are randomized and treatment is started. Animals are treated with vehicle or compound daily for 4 weeks. Tumor volume and body weight are monitored bi-weekly throughout the study. At the conclusion of the treatment period, plasma and tumor samples are taken for pharmacokinetic and pharmacodynamic analyses, respectively.
III. Preparation of Pharmaceutical Dosage Forms
Example 1
Oral Tablet
A tablet is prepared by mixing 48% by weight of a compound of Formula (I) or (III), or a pharmaceutically acceptable salt thereof, 45% by weight of microcrystalline cellulose, 5% by weight of low-substituted hydroxypropyl cellulose, and 2% by weight of magnesium stearate. Tablets are prepared by direct compression. The total weight of the compressed tablets is maintained at 250-500 mg.

## Claims

1. A compound having the structure of Formula (II):



or a pharmaceutically acceptable salt thereof,
wherein:
R1 is hydrogen, or C6-C10aryl;
R2 is C1-C5alkyl, C3-C8cycloalkyl, C6-C10aryl, C3-C8cycloalkyl(C1-C5alkylene), or C6-C10ar(C1-C5alkylene);
R3 is hydrogen;
R4 is —CO2H, —CO2R6, —C(O)N(H)CN, or —C(O)N(H)OH;
each R5 is independently hydrogen, C1-C5alkyl, C3-C8cycloalkyl, C6-C10aryl, C3-C8cycloalkyl(C1-C5alkylene), or C6-C10ar(C1-C5alkylene); and
R6 is C1-C5alkyl.

2. The compound of claim 1, wherein R4 is —CO2H.

3. The compound of claim 1, wherein R4 is —CO2R6.

4. The compound of claim 1, wherein R4 is —C(O)N(H)CN.

5. The compound of claim 1, wherein R2 is C1-C5alkyl.

6. The compound of claim 1, wherein R2 is methyl.

7. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C1-C5alkyl)-O—.

8. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C1-C5alkyl)2N—.

9. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C6-C10aryl)(C1-C5alkyl)amino.

10. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C3-C8cycloalkyl)(C1-C5alkyl)amino.

11. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C6-C10ar(C1-C5alkylene))(C1-C5alkyl)amino.

12. The compound of claim 1, wherein R2 is C1-C5alkyl substituted with (C3-C8cycloalkyl(C1-C5alkylene))(C1-C5alkyl)amino.

13. The compound of claim 1, wherein R1 is hydrogen.

14. The compound of claim 1, wherein R1 is C6-C10aryl.

15. The compound of claim 14, wherein R1 is phenyl optionally substituted with one or more groups selected from halogen, —OH, —OR5, —N(R5)2, —CON(R5)2, C1-C5alkyl, C2-C5alkynyl, C3-C8cycloalkyl, C6-C10aryl, C3-C8cycloalkyl(C1-C5alkylene), and (C6-C10ar(C1-C5alkylene).

16. The compound of claim 14, wherein R1 is phenyl optionally substituted with one or more groups selected from halogen, —OH, —OR5, C1-C5alkyl, and C3-C8cycloalkyl.

17. A pharmaceutical composition comprising a compound of claim 1, or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable excipient.