Patent ID: 8653081

Claim:
A compound of the formula or a pharmaceutically acceptable salt thereof, where one of Z 1 and Z 2 is —NR 15 C(O)NR 16 R 4 and the other of Z 1 and Z 2 is R 3 ; R 4 is optionally substituted heteroaryl; R 3 is chosen from hydrogen, halo, cyano, hydroxyl, optionally substituted alkyl, optionally substituted heterocycloalkyl, and optionally substituted heteroaryl; R 1 and R 2 are independently chosen from hydrogen, halo, cyano, optionally substituted alkyl, optionally substituted heterocycloalkyl, and optionally substituted heteroaryl; R 15 and R 16 are independently chosen from hydrogen, and optionally substituted alkyl; R 5 is optionally substituted piperazinyl; and L is lower alkylene.