Patent ID: 8664219

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: Ht is wherein any substitutable carbon on Ht is independently and optionally substituted with —R 10 ; Ring D is a 3-10 membered cycloaliphatic wherein the cycloaliphatic is independently and optionally substituted with 1-5 —R 5 ; Z 1 is N, CH, or CR 10 ; R X is H, halo, or C 1-6 alkyl, wherein the alkyl is independently and optionally substituted with 1-5 groups selected from halo, —CN, and —OR; R Y is H, halo, C 1-6 alkyl, or a 5-6 membered heterocyclyl ring containing 1-2 heteroatoms selected from O, N, or S; wherein said R Y is independently and optionally substituted with 1-4 halo, CN, OR, or C 1-6 alkyl; each R 10 is independently selected from C 1-6 alkyl, haloC 1-6 alkyl, halo, OR, C(═O)R, CO 2 R, COCOR, NO 2 , CN, S(O)R, SO 2 R, SR, N(R 4 ) 2 , CON(R 4 ) 2 , SO 2 N(R 4 ) 2 , OC(═O)R, N(R 4 )COR, or N(R 4 )CO 2 R; each R 4 is independently selected from H, C 1-6 alkyl, or haloC 1-6 alkyl; each R 5 is independently selected from halo, haloC 1-6 alkyl, or C 1-6 alkyl; and each R is independently selected from H, C 1-6 alkyl, or haloC 1-6 alkyl; provided that the compound is not