Patent ID: 7300949

Claim:
A compound of formula: or a pharmaceutically acceptable salt, solvate, or stereoisomer thereof, wherein: R 1 , R 3 and R 4 are each independently H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocycloalkyl, optionally substituted heterocycle, optionally substituted arylalkyl, optionally substituted heterocycloalkylalkyl, optionally substituted heteroarylalkyl, optionally substituted alkoxycarbonyl, optionally substituted aminocarbonyl, optionally substituted carbonyl, or optionally substituted sulfonyl; or R 3 and R 4 , with the nitrogen to which they are attached, form an optionally substituted heterocycle; R 2 is H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocycloalkyl, optionally substituted heterocycle, optionally substituted arylalkyl, optionally substituted heterocycloalkylalkyl, or optionally substituted heteroarylalkyl; and R 5 is H, alkyl, heteroalkyl, heterocycloalkyl, alkyl or aryl carbonyl, or optionally substituted alkyl or aryl sulfonyl.