Patent ID: 6897240

Claim:
A compound having the formula: wherein R 1 is a member selected from the group consisting of: R 2 is a member selected from the group consisting of H and substituted or unsubstituted lower alkyl; R 3 is a member selected from the group consisting of H and substituted or unsubstituted lower alkyl R 4 is a member selected from H and substituted or unsubstituted lower alkyl; R 5 is a member selected from the group consisting of H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, morpholine, haloalkyl, alkoxy and halo; R 6 is a member selected from the group consisting of H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, morpholine, haloalkyl, alkoxy and halo; R 7 is a member selected from the group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted aryl, morpholine, haloalkyl, alkoxy and halo; and X is S.