Patent ID: 8410095

Claim:
A compound of formula (I) wherein R1 is selected from the group consisting of: H, C1-3alkyl, —SC1-6alkyl, —OC1-6alkyl, NRaRb, hydroxy, —SH, NH—NH 2 , C3-6cycloalkyl, C4-6heterocycloalkyl, —SO 2 Ph, —OPh, —SPh, —SO 2 (C1-3alkyl), —O(arylalkyl), and phenyl; R2 is H or C1-3alkyl; R3 is selected from the group consisting of: C1-6alkyl, C3-7cycloalkyl, C4-6heterocycloalkyl, alkylcarboxy, aryl, arylalkyl, and heteroaryl; each R4 is independently selected from the group consisting of: C1-3alkyl, alkoxy, amide, and ester; n is 0-2; m is 0-3; and Ra and Rb are each independently H, or C1-3alkyl; or a pharmaceutically acceptable salt thereof.