METHOD FOR PREPARING UNSATURATED FATTY HYDROXY-ACIDS AND ESTERS THEREOF, THEIR USE IN PHARMACEUTICAL AND/OR COSMETIC COMPOSITIONS

摘要

A method of preparing unsaturated hydroxy fatty acids and esters thereof corresponding to general formula (Id): wherein n=1 to 4, m=2 to 16, R1=OH, Cl, Br, OR3 in which R3 is a straight or branched alkyl, alkenyl or alkynyl radical of 1 to 16 carbons or glycerol esters, optionally substituted by one or more atoms selected from the group consisting of carbon, nitrogen, sulfur and halogens, R2=H, SiR'1R'2R'3 in which R'1, R'2 and R'3 can be identical or different from each other and are a straight or branched alkyl, alkenyl or alkynyl radical of 1 to 16 carbons or glycerol esters, optionally substituted by one or more atoms selected from the group consisting of carbon, nitrogen, sulfur and halogens, or R2=C-Ar3 with Ar representing an aryl radical optionally substituted by one or more atoms selected from the group consisting of carbon, nitrogen, sulfur and halogens, or R2=the tetrahydropyranyl of formula: is disclosed.