| abstract |
A compound of the formula: ** Formula ** wherein R1 is Cl or CH3; R2 is C≡N, -CH2SO2CH3, -CONHCH3, -CH2NR4R5, or -CH2C≡N; R3 is C1-C2 alkyl, C1-C2 fluoroalkyl or C (O) CH3; R4 is H, C (O) CH3, CO2CH3 or SO2CH3; and R5 is H or combines with R4 to form pyrrolidin-2-one; or a pharmaceutically acceptable salt thereof. |