Patent ID: 7087621

Claim:
A compound of formula I wherein the symbols have the following meanings and are, for each occurrence, independently selected: R 1 is one or more hydrogen, alkyl, aryl, halogen, CF 3 , NH 2 , NO 2 , cyano, COOH, COOalkyl, CONR 3 R 4 , NHCOalkyl, NHCOaryl, NHSO 2 alkyl, NHSO 2 aryl or NHCOalkoxyaryl, said aryl groups optionally substituted with one or more groups selected from alkyl, NO 2 or halogen; R 2 is one or more alkoxy, hydroxy, aryloxy, NHCOalkyl, CONR 3 R 4 , CF 3 or NO 2 ; R 3 and R 4 are independently hydrogen, alkyl, substituted alkyl, halogen, alkoxy, substituted alkoxy, aryl or substituted aryl; or a pharmaceutically acceptable salt, solvate, prodrug or stereoisomer thereof.