Patent ID: 7772397

Claim:
A compound of Formula XVI wherein: R 1 and R 70 independently represent a hydrogen atom or an optionally substituted alkyl or acyl group; Y represents an optional substituent; n represents 0, 1, 2, 3, or 4; R 3 represents a hydrogen atom, or an optionally substituted alkyl group; R 74 represents a hydrogen atom, a hydroxy group or an optionally substituted alkyl or acyl group; R 7 represents a hydrogen atom or an alkyl group; and R 75 represents an optionally substituted alkyl group; and R 71 represents a hydrogen atom or an optionally substituted alkyl or acyl group; and R 72 represents a hydrogen atom; provided that at least one of R 3 , R 7 , or R 74 is an optionally substituted alky group or at least one of R 1 and R 70 is an optionally substituted alky or acyl group.