Patent ID: 7572829

Claim:
A compound of formula (III): wherein the dotted configuration is optionally a single bond or a double bond; R 6 is selected from the group consisting of OH, OMe, OR 50 , and X wherein R 50 is alkyl, alkenyl, or alkynyl, and X is F, Cl, Br, or I; R 7 is selected from the group consisting of H, OMe, and OR 50 wherein R 50 is alkyl, alkenyl, or alkynyl; R 8 is selected from the group consisting of OH, OMe, OR 50 and X wherein R 50 is alkyl, alkenyl, or alkynyl, and X is F, Cl, Br, or I; R 9 is selected from the group consisting of H, OMe and OR 50 wherein R 50 is alkyl, alkenyl, or alkynyl; and wherein when both dotted configurations are double bonds and R 6 is OH, R 7 is OMe, and R 8 is OH, R 9 is H.