Abstract:
Procédé de préparation d'un dérivé de 1-(4-nitrophényl)-3-pyrrolidinol optiquement actif répondant à la formule (I) suivante : Dérivés de paraphénylènediamine substitués par un groupement pyrrolidinyle chiral, de formule (II) et leurs sels d'addition : Composition tinctoriale contenant un dérivé de paraphénylènediamine de formule (II). Procédé de teinture d'oxydation des fibres kératiniques mettant en oeuvre ladite composition. Dispositifs à plusieurs compartiments dans lequel un premier compartiment contient ladite composition tinctoriale et un deuxième compartiment contient un agent oxydant.
Abstract:
The present invention relates to a process for cosmetic treatment of the skin, comprising the application to the skin of a composition comprising a compound (I), with R, R' and X as defined in the description and S* a monosaccharide or polysaccharide.
Abstract:
L'invention concerne un procédé cosmétique de dépigmentation, d'éclaircissement et/ou de blanchiment des matières kératiniques, notamment de la peau, comprenant l'application d'une composition cosmétique comprenant un composé de formule (I) : composé de formule (I) : L'invention concerne également les composés nouveaux de formule (I), les compositions les contenant ainsi que l'utilisation cosmétique d'un composé (I) comme agent blanchissant, éclaircissant et/ou dépigmentant des matières kératiniques.
Abstract:
The invention concerns novel silicon compounds derived from ascorbic acid consisting of a silicon-containing chain or of silanes, comprising at least a radical A of formula (I) wherein: at least one of the radicals L is a divalent radical for fixing A on the silicon chain. The invention further concerns methods for preparing said compounds, compositions, in particular cosmetic or pharmaceutical, containing them, and their use as antioxidant and/or anti-free radical agent, particularly for treating oxidant stress, for treating the effects of exposure to the sun and for preventing ageing.
Abstract:
The invention concerns novel silicon compounds derived from ascorbic acid consisting of a silicon-containing chain or of silanes, comprising at least a radical A of formula (I) wherein: at least one of the radicals L is a divalent radical for fixing A on the silicon chain. The invention further concerns methods for preparing said compounds, compositions, in particular cosmetic or pharmaceutical, containing them, and their use as antioxidant and/or anti-free radical agent, particularly for treating oxidant stress, for treating the effects of exposure to the sun and for preventing ageing.
Abstract:
La présente invention concerne un procédé de traitement cosmétique de la peau, comprenant l'application sur la peau, d'une composition comprenant un composé (I) Avec R, R' et X tels que définis dans la description et S* un mono ou polysaccharide.
Abstract:
Ascorbic acid derivatives (I), containing silicone or silane groups, are new. New ascorbic acid derivatives (I) either (i) comprise a silicone chain containing at least one unit of formula A-Si(Ra)-O(3-a)/2 (IA) or (ii) consist of silanes of formula A-SiR'1R'2R'3 (IB). R = 1-30C linear, branched or cyclic, saturated or unsaturated hydrocarbyl (optionally substituted by one or more halo) or -O-SiMe3; a = 1 or 2; R'1-R'3 = 1-8C alkyl, 2-8C alkenyl or -O-SiMe3; A = ascorbic acid derivative residue of formula (A); L1-L4 = H or divalent group of formula -(CH2CHR1)q-(V)p- (a) or -(CH=CR1)q-(V)p- (a') linked to the Si of (IA) or (IB), provided that at least one (preferably only one) of L1-L4 is (a) or (a'); V = 1-6C saturated or unsaturated hydrocarbylene (optionally substituted by OH or optionally unsaturated 2-8C alkoxy); R1 = H, OH or saturated or unsaturated, linear or branched 1-8C hydrocarbyl; p, q = 0 or 1, but not both 0. An Independent claim is also included for preparation of (I).