Patent ID: 8367735

Claim:
A compound of II: wherein: R is an alkyl, alkenyl, alkynyl, aryl, aralkyl, aralkenyl, or aralkynyl group, that may be substituted or unsubstituted, and that optionally includes at least one heteroatom in its carbon skeleton; R 1 is hydrogen, or an alkyl, substituted alkyl, alkenyl, alkynyl, aryl, substituted aryl, or aralkyl group; and R 2 is an alkyl, alkenyl, alkynyl, aryl, aralkyl, aralkenyl, or aralkynyl group containing 4-12 carbon atoms, that may be substituted or unsubstituted, and that optionally includes at least one heteroatom in its carbon skeleton; not an acetyl or tert-butyldimethylsilyl group.