Patent ID: 7038048

Claim:
At least one chemical entity chosen from compounds represented by Formula I: and pharmaceutically acceptable salts thereof; where: one of W, X, Y and Z is —N═and the others are —C═; R 1 , R 2 , R 3 and R 4 are independently hydrogen, hydroxy, optionally substituted alkyl, optionally substituted alkoxy, halogen or cyano, provided that R 1 , R 2 , R 3 or R 4 is absent where W, X, Y or Z, respectively, is —N═; R 5 is optionally substituted aralkyl; R 6 is lower alkyl; R 6 is hydrogen; R 7 is substituted alkyl; and R 8 is —C(O)—R 9 , in which R 9 is optionally substituted alkyl, optionally substituted aryl, or optionally substituted aralkyl.