AROMATIC ESTERS AND THIOESTERS; PROCESS FOR PREPARING THE SAME AND THEIR USE IN HUMAN OR ANIMAL MEDECINE AND IN COSMETICS

摘要

The invention relates to aromatic esters and thioesters, characterized in that they correspond to the following general formula: (I) IMG in which X represents an oxygen or sulfur atom, R1 represents: -CH2OH, - CH (OH) -CH3, -COOR5 or -CON IMG, R5 representing a hydrogen atom, a lower alkyl or alkenyl radical or a mono or polyhydroxyalkyl radical, r 'and r "representing a hydrogen atom, a lower alkyl radical, a mono or polyhydroxyalkyl radical, an optionally substituted aryl or benzyl radical, an amino acid residue or an amino sugar or taken together form a heterocycle, R2 represents an alkyl radical?,? ' disubstituted having from 4 to 12 carbon atoms or a mono or polycyclic cycloalkyl radical having from 5 to 12 carbon atoms whose bonding carbon is trisubstituted, R3 represents a hydrogen atom, a lower alkyl radical, or the radical -Si (CH3) 2 R'3, R'3 representing a lower alkyl radical and R4 represents a hydrogen atom or a lower alkyl radical, and the salts of said aromatic esters and thioesters of formula (I) when R5 represents an atom of The invention also relates to their preparation process and their use in human or veterinary medicine and in cosmetics.