Patent ID: 7531662

Claim:
A compound represented by formula I: wherein R represents —C(O)R 2 , —(C(R 3 ) 2 ) n CO 2 R 4 , —(C(R 3 ) 2 ) n C(O)N(R 5 ) 2 , —(C(R 3 ) 2 ) n CN, —(C(R 3 ) 2 ) n C(O)R 5 , —C(C(R 3 ) 2 ) n C≡CR 6 , —(C(R 3 ) 2 ) n OPO(OR 5 ) 2 , —(C(R 3 ) 2 ) n OR 5 , —(C(R 3 ) 2 ) n N(R 5 ) 2 , —(C(R 3 ) 2 ) n SR 5 , or —(C(R 3 ) 2 ) n NO 2 ; R 1 represents alkenyl; R 2 represents cycloalkyl, or alkenyl; R 3 represents independently for each occurrence H, alkyl, alkenyl, aryl, cycloalkyl, aralkyl, heteroalkyl, halogen, cyano, amino, acyl, alkoxyl, silyloxy, amino, nitro, thiol, amine, imine, amide, phosphonate, phosphine, carbonyl, carboxyl, silyl, ether, thioether, sulfonyl, selenoether, ketone, aldehyde, or ester; R 4 represents cycloalkyl, —CH(R 3 ) 2 , alkenyl, alkynyl, aryl, or aralkyl; R 5 represents independently for each occurrence H, alkyl, alkenyl, aryl, cycloalkyl, or aralkyl; R 6 represents optionally substituted alkyl, alkenyl, aryl, or aralkyl; and n is 1-10.