Patent ID: 7169942

Claim:
A compound according to formula (I) wherein, X is selected from the group of C(CH 3 ) 2 , C(—Y(CH 2 ) n Y—), CH 2 , C(O), Y is selected from the group of S and O; R 1 is selected from the group of a C3 to C8 cycloalkyl, biphenyl, with the proviso that, when X is CH 2 , R 1 is not cycloexyl or phenyl; R 2 and R 3 are methyl; R 4 is selected from the group of methyl, methanol, —(CH 2 ) m COOH, and —(CH 2 ) m COH; R 5 is selected from the group of H, OH, methoxy, and ethoxy; R 6 –R 10 are independently selected from the group of H, OH, C1 to C6 alkyl, halo, amino, C1 to C2 alkylamino, C1 to C2 dialkylamino, amido, C1 to C2 alkylamido, cyano, nitro, C1 to C6 alkoxy, C1 to C6 alcohol, carboxyl containing a C1 to C6 alkyl, carbonyl containing a C1 to C6 alkyl, ester containing a C1 to C6 alkyl group, sulfoxide containing a C1 to C6 alkyl, and sulfone containing a C1 to C6 alkyl; at least one of R 11 –R 13 is selected from the group of C1 to C6 alkyl, C1 to C6 alkoxy, fluoro, and chloro, and the other of R 11 –R 13 can optionally be H; n is an integer from 2 to 4; and m is an integer that is either 0 or 1.