Patent ID: 8329741

Claim:
A compound having the following structure: wherein R 1 and R 2 are selected from H, ORx, C(O)ORx or C(O)N(Rx)Rx and Rx is independently at each occurrence, a hydrogen, alkyl or alkenyl group comprising chains of 8 carbons or less, aryl group, or amino group, further if R 1 is ORx, C(O)ORx or C(O)N(Rx)Rx then R 2 is H or if R 2 is ORx, C(O)ORx or C(O)N(Rx)Rx then R 1 is H, and if R 1 is H, R 2 is not H; wherein R 3 =CO 2 Ry, CH 2 ORy and Ry is a hydrogen, alkyl or alkenyl group comprising chains of 8 carbons or less, aryl group, or amino group; wherein R 4 =alkyl, aryl, alkenyl, alkoxy, halo, nitro, cyano, keto, amino, or carboxylate; and, wherein R 5 =alkyl, aryl, alkenyl, alkoxy, halo, nitro, cyano, keto, amino, or carboxylate; wherein R 6 =hydrogen, alkyl, aryl, alkenyl, alkoxy, halo, nitro, cyano, keto, amino, or carboxylate; and, wherein R 7 =hydrogen, alkyl, aryl, alkenyl, alkoxy, halo, nitro, cyano, keto, amino, or carboxylate; a stereoisomer thereof, or a racemic mixture of the compound and the enantiomer of the compound or a pharmaceutically useful salt thereof.