Patent ID: 7141588

Claim:
A compound of formula I or a pharmaceutically acceptable salt thereof wherein: A is a structure i C is aryl, wherein said aryl is phenyl or naphthyl, wherein said aryl is optionally substituted with 1–3 of R 2 ; B is selected from het and substituted het, or if said aryl is phenyl, B and one R 2 , if present, together, with the phenyl carbon atoms to which B and the one R 2 are bonded, form a het, the het optionally being a substituted het, provided that when C is phenyl optionally substituted with R 2 that B is not where Q is independently selected from H, C 1 –C 6 alkyl, —O—C 1 –C 6 alkyl, phenyl, benzyl, —OH, CF 3 , CCl 3 , —NR 3 R 3 , —C 1 –C 6 alkylene-NR 3 R 3 , C 1 –C 6 alkylene-(CH 2 phenyl)—NR 3 R 3 , C 1 –C 6 alkylene-(CH 2 benzyl)—NR 3 R 3 , and R 1 is selected from H, —OH, alkyl, cycloalkyl, alkoxy, alkenyl, amino, substituted alkyl, substituted alkoxy, and substituted alkenyl; Each R 2 is independently selected from H, alkyl, amino, NO 2 , —CN, halo, and substituted alkyl; Each R 3 is independently selected from H or C 1 –C 6 alkyl; and W 2 is O or S.