Patent ID: 8765994

Claim:
A compound of Formula I or a salt thereof, wherein; R 1 and R 2 are independently selected from the group consisting of: —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 OR′, —CHO, —CO 2 H, and —CO 2 R′; R 3 and R 4 are independently selected from the group consisting of: H, —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 OR′, —CHO, —CO 2 H, and —CO 2 R′; Q is —CH 2 —; X 1 , X 2 , X 3 , and X 4 are independently selected from the group consisting of: H, R, OH, —OR, —CO 2 H, —CO 2 R′, F, Br, Cl, I, —CN, —SO 3 H, —OSO 3 H, NO 2 , NH 2 , —NHR, and —NR 2 ; where R is a linear, branched, or cyclic, saturated or unsaturated one to ten carbon alkyl group that is unsubstituted or is substituted with one or more of: OH, .═O, SH, F, Br, Cl, I, NH 2 , —NHR′, —NR′ 2 , NO 2 , —CO 2 H, —CO 2 R′, and epoxide; and R′ is a linear, branched, or cyclic, saturated or unsaturated one to ten carbon alkyl group that is unsubstituted or substituted with one or more of: OH, .═O, SH, F, Br, Cl, I, NH 2 , —NHR″, —NR″ 2 , NO 2 and —CO 2 H where R″ is a linear, branched, or cyclic, saturated or unsaturated one to ten carbon alkyl group; providing that the compound does not have the following precise structure of pelorol: