Patent ID: 7291629

Claim:
A method of treating pain in a mammal comprising the step of administering to said mammal a therapeutically effective amount of a pharmaceutical composition comprising a compound of Formula I: wherein: R 1 is selected from the group consisting of: amino optionally monosubstituted or disubstituted with C 1 -C 4 alkyl or hydroxy(C 1 -C 4 alkyl); and C 1 -C 4 alkyl-(R 5 )(R 6 ) wherein one of R 5 and R 6 is selected from H and C 1 -C 4 alkyl, and the other is selected from carboxy, carboxy-(C 1 -C 4 alkyl) and (C 1 -C 4 alkoxy)-carbonyl; and R 2 and R 3 are independently selected from H and NO 2 .