Optically active esters of 7-substituted 3,5-difunctionalized 6-heptenoic acids.

摘要

An optically active ester of formula (I): <CHEM> wherein: R is a substituted or unsubstituted aromatic group, a substituted or unsubstituted heteroaromatic group or a substituted vinyl group; Ar is a condensed aromatic group; X<1> and Y<1> are not the same and each is a hydrogen atom or a hydroxyl group, or together represent an oxygen atom which forms a carbonyl group together with the carbon atom to which X<1> and Y<1> are attached; and X<2> and Y<2> are not the same and each is a hydrogen atom or a hydroxyl group, or together represent an oxygen atom which forms a carbonyl group together with the carbon atom to which X<2> and Y<2> are attached, or an enantiomer thereof.