Patent ID: 8481542

Claim:
A compound of formula (Ia): or a pharmaceutically acceptable salt thereof, wherein R11 is selected from C 1-8 alkyl, C 2-8 alkenyl, C 3-14 cycloalkyl, a C 6-14 aryl group, a 5-14 membered heteroaryl group, a 3-14 membered cycloheteroalkyl group, C 1-8 alkoxy, halo, NR13R14, C(O)OR13, C(O)NR13R14, C 1-8 haloalkyl, formyl, carbalkoxy, C 1-8 alkylOH, C(O)R13, SO 2 R13, C(O)NHC 1-8 alkylR13, NR13R14, SO 2 NR13R14, OCF 3 , NHC(O)R13, CH 2 OC(O)NR13R14, CH 2 NR13R14, NHC(O)OR13, NHC(O)NR13R14, CH 2 NHSO 2 R13, CH 2 NHC(O)OR13, OC(O)R13, and NHC(O)R13; R12 is selected from H, C 1-8 alkyl, a C 6-14 aryl group, C 1-8 haloalkyl, C 1-8 alkoxy, halo, NH 2 , CN, OCF 3 , OH, C(O)NR13R14, C(O)R13, NR13R14, NHC(O)R13, SO 2 R13, and SO 2 NR13R14; and R13 and R14 are independently selected from H, C 1-8 alkyl, C 2-8 alkenyl, C 3-14 cycloalkyl, a C 6-14 aryl group, a 5-14 membered heteroaryl group, a 3-14 membered cycloheteroalkyl group, C 1-8 haloalkyl, C 1-8 alkylOH, and C 1-8 alkoxy.