Novel indazole peptidomimetics as thrombin receptor antagonists

A compound of the following formula (I):

• 12
• wherein:
• A1 and A2 are each independently a D- or L-amino acid selected from the group consisting of alanine, β-alanine, arginine, homoarginine, cyclohexylalanine, citrulline, cysteine (optionally substituted with C1-C4 alkyl, aryl, or arC1-C4 alkyl), 2,4-diaminobutyric acid (optionally substituted with acyl, C1-C4 alkyl, aroyl, amidino, or MeC(NH)—), 2,3-diaminopropionic acid (optionally substituted with acyl, C1-C4 alkyl, aroyl, amidino, or MeC(NH)—), glutamine, glycine, indanylglycine, lysine (optionally substituted with acyl, C1-C4 alkyl, aroyl, MeC(NH)—), valine, methionine, proline, serine (optionally substituted with C1-C4 alkyl, aryl, or arC1-C4 alkyl), homoserine (optionally substituted with C1-C4 alkyl, aryl, or arC1-C4 alkyl), tetrahydroisoquinoline-3-COOH, threonine (optionally substituted with C1-C4 alkyl, aryl, or arC1-C4 alkyl), ornithine (optionally substituted with acyl, C1-C4 alkyl, aroyl, MeC(NH)—), and an unsubstituted or substituted aromatic amino acid selected from the group consisting of phenylalanine, heteroarylalanine, naphthylalanine, homophenylalanine, histidine, tryptophan, tyrosine, arylglycine, heteroarylglycine, aryl-β-alanine, and heteroaryl-β-alanine wherein the substituents on the aromatic amino acid are independently selected from one or more of halogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy, C1-C4 alkoxycarbonyl, amino, amidino, guanidino, fluorinated C1-C4 alkyl, fluorinated C1-C4 alkoxy, C1-C4 alkylsulfonyl, C1-C4 alkylcarbonyl, cyano, aryl, heteroaryl, arC1-C4 alkyl, C2-C4 alkenyl, alkynyl, or nitro;
• R1 is selected from amino, C1-C8 alkylamino, C1-C8 dialkylamino, arylamino, arC1-C8 alkylamino, C3-C8 cycloalkylamino, heteroalkylC1-C8 alkylamino, heteroalkylC1-C8 alkyl-N-methylamino, C1-C8 dialkylaminoC1-C8 alkylamino, —N(C1-C8 alkyl)-C1-C8 alkyl-N(C1-C8alkyl)2, N(C1-C8alkyl)(C1-C8alkenyl), —N(C1-C8alkyl)(C3-C8cycloalkyl), heteroalkyl or substituted heteroalkyl wherein the substituent on the heteroalkyl is selected from oxo, amino, C1-C8 alkoxyC1-C8 alkyl, C1-C8 alkylamino or C1-C8 dialkylamino;
• R2 and R3 are each independently selected from hydrogen, C1-C8 alkyl, C3-C8 cycloalkyl, C3-C8 cycloalkylC1-C8 alkyl, aryl, heteroalkyl, substituted heteroalkyl (wherein the substituent on the heteroalkyl is one or more substituents independently selected from C1-C8 alkoxycarbonyl, C1-C8 alkyl, or C−C4 alkylcarbonyl), heteroalkylC1-C8 alkyl, indanyl, acetamidinoC1-C8 alkyl, aminoC1-C8 alkyl, C1-C8 alkylaminoC1-C8 alkyl, C1-C8 dialkylaminoC1-C8 alkyl, unsubstituted or substituted heteroarylC1-C8 alkyl or unsubstituted or substituted arC1-C8 alkyl, wherein the substituent on the aralkyl or heteroarylalkyl group is one or more substituents independently selected from halogen, nitro, amino, C1-C8 alkyl, C1-C8 alkoxy, hydroxy, cyano, C1-C4 alkylcarbonyl, C1-C8alkoxycarbonyl, hydroxyC1-C8alkyl or aminosulfonyl;
• or
• R2 and R3, together with the nitrogen to which they are attached, alternatively form an unsubstituted or substituted heteroalkyl group selected from piperidinyl, piperazinyl, morpholinyl or pyrrolidinyl, wherein the substituent is one or more substituents independently selected from C1-C8 alkyl C1-C8 alkoxycarbonyl or C1-C4alkylcarbonyl;
• R4 is selected from unsubstituted or substituted aryl, arC1-C8 alkyl, C3-C8 cycloalkyl, or heteroaryl, where the substituents on the aryl, arC1-C8 alkyl, cycloalkyl or heteroaryl group are independently selected from one or more of halogen, nitro, amino, cyano, hydroxyalkyl, C1-C8 alkyl, C1-C8 alkoxy, hydroxy, C1-C4 alkylcarbonyl, C1-C3 alkoxycarbonyl, fluorinated C1-C4 alkyl, fluorinated C1-C4 alkoxy, C1-C4 alkylsulfonyl;
• R5 is selected from hydrogen or C1-C8 alkyl;
• X is oxygen or sulfur;
• m is an integer selected from 0, 1, 2 or 3;
• n is an integer selected from 1 or 2;
• and
• p is an integer selected from 0 or 1;
• and pharmaceutically acceptable salts thereof.