Patent ID: 8492389

Claim:
A compound of formula I wherein A is optionally substituted purinyl; X is selected from the group consisting of CH(CH 3 ), CH(CH 2 CH 3 ), and C(CH 3 ) 2 ; Y is NH; R 1 and R 2 , independently, are selected from the group consisting of hydrogen, C 1-6 alkyl, aryl, heteroaryl, halo, NO 2 , OR a , OCF 3 , N(R a ) 2 , CN, OC 2-4 alkyleneOR a , OC(═O)R a , C(═O)R a , and C(═O)OR a ; R 3 is optionally substituted and selected from the group consisting of aryl and arylC 1-3 alkyl; and R a is selected from the group consisting of hydrogen, C 1-6 alkyl and C 1-3 alkylenearyl, or two R a groups are taken together to form a 5- or 6-membered ring, optionally containing at least one heteroatom selected from N, O, or S; or a pharmaceutically acceptable salt thereof.