Patent ID: 6995278

Claim:
A compound of the general formula: wherein: a) R a is —N 3 , —C≡C—R, —CH═CH—R, —R—CH═CH 2 , —C≡CH, —R—R 1 , —OC(O)CH 3 , —C(O)H, —NH 2 , —NMe 2 , or —NHMe, where R is a straight or branched alkyl with up to 10 carbons or aralkyl, and R 1 is —OH, —NH 2 , —Cl, —Br, —I, —F or CF 3 ; b) R h1 and R h2 are independently H, or a straight or branched chain alkyl, alkenyl or alkynyl with up to 6 carbons that is unsubstituted, or substituted with one or more groups selected from a hetero functionality (O—Y, N—Y 2 or S—Y) where Y is independently selected from H, Me or an alkyl chain up to 6 carbons; a halo functionality (F, Cl, Br or I); an aromatic group optionally substituted with hetero, halo or alkyl; or R h1 and R h2 are independently an aromatic group optionally substituted with hetero, halo or alkyl, provided that both R h1 and R h2 are not H; and wherein all monosubstituted substituents have either an α or β configuration.