Patent ID: 7820721

Claim:
A compound of the formula: wherein n is 1 or 2; m is 0, 1, 2, 3, or 4; q is 0 or 1; t is 0 or 1; R 1 is alkyl having from 1 to 3 carbon atoms; R 2 is hydrogen, halo, alkyl having from 1 to 3 carbon atoms, or alkoxy having from 1 to 3 carbon atoms; one of R 3 and R 4 is hydrogen or hydroxy and the other is hydrogen; or R 3 and R 4 together are ═O; R 5 is hydrogen or alkyl having one, two, three, four or five carbon atoms; A is 2,6-dimethylphenyl; or a pharmaceutically acceptable salt of the compound.