Polyunsaturated compounds, method for preparing same and compositions containing the same

Abstract

The invention concerns novel polyunsaturated compounds of formula (I) wherein: Rrepresents a R', -A-R′group, R′being selected from —COOH, —COOR, —CONH, —CONHR, —CONRR, —CHO, —CHOH, —CHOR, and A represents a C-Calkylene, alkenylene or alkynylene; Rrepresents: an optionally substituted aryl group or an optionally substituted heteroaryl group; a sugar residue or, a fatty acid residue optionally branched and/or substituted preferably at the chain terminus and particularly by hydroxy, acetoxy radical or by an optionally protected amino radical; a —OC —(CH)n CO-tocopheryl (alpha, beta or gamma or delta) group, with 2 $m(F) n $m(F) 10; a —R′—O—Rgroup, wherein R′is an optionally substituted arylene group or an optionally substituted heteroarylene group, and Rrepresents a hydrogen atom, a straight or branched optionally substituted C-Calkyl, a straight or branched optionally substituted C-Calkenyl, or a straight or branched C-Calkynyl group, an optionally substituted tocopheryl radical or the like, an amino acid residue, or a sugar residue. The invention also concerns the compositions, in particular cosmetic and/or dermatological compositions containing at least one compound of formula (I) as well as their use as whitening and/or depigmenting agent, and the cosmetic method using said compositions.