Patent ID: 7163673

Claim:
A compound having the structural formula: wherein R 1 , R 2 and R 3 are independently selected from the group consisting of (1) a C2–C26 aliphatic residue; (2) a C2–C26 acyl residue; (3) a C2–C26 aliphatic residue substituted with one or more cinnamate moieties selected from the group consisting of cinnamoyl, feruloyl, coumoroyl, sinapoyl, and o-methylsinapoyl; (4) a C2–C26 acyl residue substituted with one or more cinnamate moieties selected from the group consisting of cinnamoyl, feruloyl, coumoroyl, sinapoyl, and o-methylsinapoyl, and (5) hydrogen, with the proviso that at least one of said R 1 , R 2 and R 3 is one of the C2–C26 acyl or C2–C26 aliphatic residues substituted with one or more cinnamate moieties.