Patent ID: 7511053

Claim:
A compound of formula I, salts and stereoisomers thereof: wherein X is O; Y is selected from the group consisting of O and S; Z is CH; R 1 is an optionally substituted substituent selected from the group consisting of C 1-6 alkyl, C 2-8 alkenyl, C 2-8 alkynyl, and C 3-8 cycloalkyl; m is 0; R 4 is absent; R 5 and R 6 are independently an optionally substituted substituent selected from the group consisting of aryl(C 1-6 alkyl), heteroaryl(C 1-6 alkyl), and heterocyclyl(C 1-6 alkyl); and R 2 and R 3 are independently selected from the group consisting of hydrogen, halogen, hydroxy and a C 1-6 alkyl.