Patent ID: 7468437

Claim:
A compound of the formula I: wherein: R 1 , R 1a and R 1b are independently selected from the group consisting of H, F, Cl, Br, I, CH 3 , CF 3 , OH, OCH 3 , NH 2 , NHCH 3 , SH, and SCH 3 ; R 2 is selected from the group consisting of H, R 4 , COR 4 , and SO 2 R 4 ; Y is a bond, CHCH 3 , or CH 2 ; Z is selected from the group consisting of CH 2 , CHCH 3 , CO, and COCH 2 ; R 4 is independently selected from the group consisting of H, C 1-6 alkyl, phenyl optionally substituted by R 6 , benzyl, O—C 1-6 alkyl, O-benzyl, N(R 5 )—C 1-6 alkyl, N(R 5 )-benzyl, R 5 is H or C 1-6 alkyl; R 6 , R 6a , and R 6b are independently selected from the group consisting of H, F, Cl, CF 3 , OCH 3 , CH 3 , COCH 3 , CO 2 CH 3 , CH 2 CONH 2 , CONH 2 , CONHCH 3 , and SO 2 CH 3 ; and pharmaceutically acceptable salts thereof.