RETINOIC-ACID DERIVATIVES, PROCESS FOR THEIR PREPARATION AND MEDICINAL AND COSMETIC COMPOSITIONS CONTAINING THEM

摘要

The invention provides compounds of formula (IV) in which formula R1 and R2 are identical or different and denote: (1) taken separately: a hydrogen atom, a linear or branched C1-C4 alkyl radical, an unsubstituted phenyl radical or a phenyl radical substituted with a halogen atom, with a C1-C4 alkoxy radical or with a C1-C4 alkoxy radical; (2) taken together either (a) a polymethylene linkage; or (b) a benzene ring; or (c) a cyclic linkage containing a nitrogen atom to constitute an isothiazolopyridinone derivative; m being able to have the values 0 or 1; the group A in the formula (IV) denoting the group where R8 corresponds to a hydrogen atom, a methyl radical, a hydroxymethyl radical or a -CH2O-CO-Ret group. The invention also provides a process for preparing the abovementioned compounds and also drug compositions and cosmetic compositions containing them.