Patent ID: 8710063

Claim:
A compound of the formula: wherein; R 1 is Cl or —CH 3 ; R 2 is —C≡N, —CH 2 SO 2 CH 3 , —CONHCH 3 , —CH 2 NR 4 R 5 , or —CH 2 C≡N; R 3 is C 1 -C 2 alkyl, C 1 -C 2 fluoroalkyl or —C(O)CH 3 ; R 4 is H, —C(O)CH 3 , —CO 2 CH 3 or —SO 2 CH 3 ; and R 5 is H or combines with R 4 to form pyrrolidin-2-one; or a pharmaceutically acceptable salt thereof.