Patent ID: 7321050

Claim:
A compound of the following formula, or a salt thereof wherein R 1 is selected from the group consisting of unsubstituted or substituted alkyl with carbon between 1 and 18; alkenyl with carbon between 2 and 18; alkynyl with carbon between 2 and 18; halo, and COR 9 ; R 2 and R 3 are independently selected from the group consisting of H, unsubstituted or substituted alkyl with carbon between 1 and 18, and acyl with carbon between 1 and 18; R 4 , R 5 , R 6 , R 7 and R 8 are independently selected from the group consisting of H, unsubstituted or substituted alkyl with carbon between 1 and 18, alkenyl with carbon between 2 and 18, alkynyl with carbon between 2 and 18, aryl or aralkyl group, chloro, bromo, iodo, fluoro, nitro, CN, COR 9 , NR 10 R 11 , S(O) 2 NR 10 R 11 , SR 10 , SOR 10 , SO 2 R 10 , and OR 12 ; with the proviso that at least one of R 4 , R 5 , R 6 , R 7 , and R 8 is fluoro; R 9 is selected from H, unsubstituted or substituted alkyl, cycloalkyl, aryl, or aralkyl, or NR 10 R 11 , or OR 10 ; R 10 and R 11 are selected from H, unsubstituted or substituted alkyl, cycloalkyl, aryl and aralkyl; R 12 is selected from H, unsubstituted or substituted alkyl, cycloalkyl, aryl, aralkyl and acyl; and wherein the configuration of the double bond of the compound of Formula I is E or Z.