Patent ID: 7332521

Claim:
A compound having the formula: or a pharmaceutically acceptable salt or ester form thereof wherein: X is NH; R 1 is hydrogen, C 1 -C 6 alkyl, C 2 -C 7 alkenyl, C 2 -C 7 alkynyl, C 3 -C 8 cycloalkyl, C 7 -C 11 bicycloalkyl, —CO 2 C 1 -C 6 alkyl, C 6 -C 10 aryl, arylalkyl, or heterocycle; R 2 is hydrogen, C 1 -C 6 alkyl, C 2 -C 7 alkenyl, C 3 -C 8 cycloalkyl, C 7 -C 11 bicycloalkyl, C 6 -C 10 aryl, or heterocycle; R 3 is hydrogen, halogen, C 1 -C 6 alkyl, C 1 -C 3 perfluoroalkyl, C 1 -C 6 alkoxy, C 3 -C 8 cycloalkyl, or —C(═O)C 1 -C 3 alkyl; A 1 is C 6 -C 10 aryl or heterocycle; and A 2 is C 6 -C 10 aryl, or heterocycle said alkyl, alkenyl, alkynyl, cycloalkyl, aryl, or heterocycle group or part of a group being optionally substituted.