Patent ID: 6916827

Claim:
A compound of the formula: or a pharmaceutically acceptable salt thereof, wherein: R 1 represents phenyl, pyridyl, thiazolyl, or pyrimidinyl, each of which is unsubstituted or substituted with from 1-3 groups independently selected from R 5 ; R 2 represents C 1 -C 8 alkyl, C 2 -C 8 alkenyl, C 2 -C 8 alkynyl, Either: (a) A is CH 2 and B is NR 3 or CR 3 R 6 ; or (b) B is CH 2 and A is NR 3 or CR 3 R 6 ; R 3 is independently selected from: (a) hydrogen, halogen, nitro and cyano; and (b) groups of the formula: wherein: G is a bond or C 1 -C 6 alkyl, and R A is hydrogen or represents phenyl, pyridyl, or pyrimidinyl, each of which is unsubstituted or substituted with from 1 to 4 substituents independently selected from R 5 ; R 5 is independently selected at each occurrence from halogen, hydroxy, nitro, cyano, amino, C 1 -C 8 alkyl, C 1 -C 8 alkoxy, mono- and di(C 1 -C 8 alkyl)amino, C 3 -C 10 cycloalkyl, (C 3 -C 10 cycloalkyl)alkyl, (C 3 -C 10 cycloalkyl)alkoxy, C 2 -C 9 heterocycloalkyl, C 1 -C 8 alkenyl, C 1 -C 8 alkynyl, halo(C 1 -C 8 )alkyl, halo(C 1 -C 8 )alkoxy, oxo, amino(C 1 -C 8 )alkyl and mono- and di(C 1 -C 8 alkyl)amino(C 1 -C 8 )alkyl; and R 6 is hydrogen or C 1 -C 6 alkyl.