Patent ID: 6995156

Claim:
A compound of formula (I): wherein: a and b are independently 1 to 4; A is ═N—; R 1 is hydrogen, alkyl, carboxyalkyl, aryl, aralkyl, alkylcarbonyl, alkoxyalkoxyalkylcarbonyl, aryloxyalkylcarbonyl, carboxyalkylcarbonyl, alkoxycarbonylalkylcarbonyl, alkoxycarbonylalkyl, alkoxycarbonyl, arylcarbonyl, aryloxycarbonyl, aralkoxycarbonyl, cycloalkylcarbonyl, haloalkoxycarbonyl, aminocarbonyl, monoalkylaminocarbonyl, alkoxycarbonylaminocarbonyl, alkylsulfonyl, arylsulfonyl, heterocyclyl, or heterocyclylcarbonyl; R 2 is hydrogen, alkyl, aryl, aralkyl, alkylsulfonylalkyl, aralkoxyalkyl, hydroxyalkyl, aminoalkyl, haloalkylsulfonylaminoalkyl, carboxyalkylthioalkyl, alkoxycarbonylalkylthioalkyl, carboxyalkyl, (carboxy)(hydroxy)alkyl, carboxyalkoxyalkyl, alkoxycarbonylalkyl, aralkoxycarbonylalkyl, carboxyalkoxycarbonylalkyl, alkoxycarbonylalkoxycarbonylalkyl, aminocarbonylalkyl, aralkoxycarbonylaminoalkyl, alkoxycarbonylalkylaminocarbonylalkyl, carboxyalkylaminocarbonylalkyl, (alkoxycarbonylalkyl)(alkyl)aminocarbonylalkyl, (carboxyalkyl)(alkyl)aminocarbonylalkyl, tetrahydrofuranonyl, or heterocyclylalkyl; R 3 is hydrogen, alkyl, hydroxy, halo, carboxyalkenyl, alkoxy, alkoxycarbonyl, alkoxycarbonylalkoxy, di(alkoxycarbonyl)alkoxy, carboxyalkoxy, di(carboxy)alkoxy, (carboxy)(hydroxy)alkoxy, (dialkylamino)(carboxy)alkoxy, hydroxyalkoxy, cyanoalkoxy, haloalkoxy, haloalkenyloxy, carboxyalkenyloxy, alkoxycarbonylalkenyloxy, (cycloalkyl)(alkoxycarbonyl)alkoxy, (cycloalkyl)(carboxy)alkoxy, alkylthio, carboxy, (dialkylaminocarbonylalkyl)(alkyl)amino, (carboxyalkyl)(alkyl)amino, (hydroxyalkyl)(alkyl)amino, (dialkylaminoalkyl)(alkyl)amino, carboxyalkylamino, mono(alkoxycarbonylalkyl)aminocarbonyl, mono(carboxyalkyl)aminocarbonyl, mono(di(alkoxycarbonyl)alkyl)aminocarbonyl, mono((alkoxycarbonyl)(carboxy)alkyl)aminocarbonyl, mono(dicarboxyalkyl)aminocarbonyl, aminocarbonylalkoxy, dialkylaminocarbonylalkoxy, monoaralkylaminocarbonylalkoxy, mono(carboxyalkyl)aminocarbonylalkoxy, mono(alkoxycarbonylalkyl)aminocarbonylalkoxy, carboxycycloalkoxy, alkoxycarbonylcycloalkoxy, aminocarbonylcycloalkoxy, heterocyclyl, or heterocyclylalkoxy each R 4 is independently selected from the group consisting of hydrogen, alkyl, alkoxy, aralkoxy, halo, haloalkyl, haloalkoxy, hydroxy, cyano, alkylthio, carboxy, alkoxycarbonyl, aminocarbonyl, alkylcarbonyl, nitro, amino, monoalkylamino, dialkylamino, carboxyalkylamino, alkylcarbonylamino, di(alkylcarbonyl)amino, hydroxyalkyl, dialkylaminoalkyl, carboxyalkoxy, alkoxycarbonylalkoxy, dialkylaminoalkoxy, and heterocyclylalkoxy each R 5 is independently selected from the group consisting of hydrogen, alkyl, hydroxyalkyl, aralkyl, carboxy, alkoxycarbonyl, aralkoxycarbonyl, carboxyalkyl, and alkoxycarbonylalkyl; R 6 is —N(R 7 )—C(O)— or —C(O)—N(R 7 )—; R 7 is hydrogen, alkyl, carboxyalkyl, or alkoxycarbonylalkyl; as a single stereoisomer, a mixture of individual stereoisomers, or a racemic mixture; or a pharmaceutically acceptable salt thereof.