Patent ID: 7420003

Claim:
A compound according to formula I: wherein R is selected from the group consisting of: (a) a C 2 -C 6 straight or branched alkyl; (b) a straight or branched C 2 -C 6 alkenyl; (c) —(CH 2 ) n R 1 , wherein R 1 is a phenyl, optionally substituted at one or more positions with a group selected from: Cl; F; NO 2 ; I; Br; a C 1 -C 3 alkyl; and a C 1 -C 3 alkoxy wherein n=0-3; (d) —C(O)R 2 , wherein R 2 is selected from the group consisting of: H; —(CH 2 ) n R 1 , wherein R 1 is as described above and n=0-3; and —(CH 2 ) n C(O)R 3 , wherein R 3 is a C 1 -C 6 straight or branched alkyl and n=0-3; (e) —C(O)(CH 2 ) p —C(O)—O—R 4 , wherein R 4 is a straight or branched C 1 -C 6 alkyl and wherein p=0-3; (f) —R d (CF 3 ) j , wherein R d is a C 1 -C 3 straight or branched alkyl and j=1-3; (g) —(CH 2 ) j -TMS, wherein TMS is trimethylsilyl, and j=1-3; wherein X and Y are independently selected from the group consisting of H; NH 2 ; F, Cl; Br; C 1 -C 3 alkyl; and a C 1 -C 3 alkoxy; or wherein the combination XY or YY together form a C 3 -C 6 carbocyclic ring or a C 3 -C 6 heterocyclic ring containing one or more heteroatoms selected from the group consisting of: O; N; and S.