Patent ID: 8476300

Claim:
A compound of a formula or a pharmaceutically acceptable salt thereof; wherein R 1 is selected from the group consisting of H, —C 1 -C 4 alkyl, F, Cl, —CN, —C(O)R 3 , —(C 1 -C 3 alkyl)OH, —OCH 3 , —S(O) 2 R 4 , —S(O)CH 3 , —CF 3 , and —S(C 1 -C 3 alkyl); R 2 is selected from the group consisting of H, F, and CH 3 ; R 3 is selected from the group consisting of OH, —OCH 3 , —NH(C 0 -C 2 alkyl), CH 3 , —N(CH 3 ) 2 ; R 4 is selected from the group consisting of —C 1 -C 4 alkyl, —N(CH 3 ) 2 , and —CF 3 ; and R 5 is selected from the group consisting of H and CH 3 .