Patent ID: 7026323

Claim:
A compound of formula (I): wherein: a and b are independently 1 to 4; A is ═CH—; R 1 is alkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, haloalkoxycarbonyl, or alkoxycarbonylaminocarbonyl; 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, tetrahydrofuranonyloxy, 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.