Patent ID: 7705024

Claim:
A compound of formula (I): wherein each of R 1 , R 2 , and R 3 , independently, is H, halo, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 2 -C 10 alkynyl, C 3 -C 20 cycloalkyl, C 3 -C 20 cycloalkenyl, C 3 -C 20 heterocycloalkyl, C 3 -C 20 heterocycloalkenyl, aryl, or heteroaryl; and A is heteroaryl optionally substituted with halo, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 2 -C 10 alkynyl, C 3 -C 20 cycloalkyl, C 3 -C 20 cycloalkenyl, C 3 -C 20 heterocycloalkyl, C 3 -C 20 heterocycloalkenyl, aryl, or heteroaryl or optionally fused with a 3-8 membered ring containing 0-3 heteroatoms.