C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 7/08 (2006.01) A61K 31/695 (2006.01) C07F 7/21 (2006.01) C08G 77/38 (2006.01) A61K 7/42 (2000.01)
Patent
CA 2388313
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.
L'invention concerne des nouveaux composés siliciés dérivés de l'acide ascorbique, constitués d'une chaîne siliconée ou étant des silanes, comportant au moins un radical A de formule (I) dans laquelle au moins un des radicaux L est un radical divalent permettant l'accrochage de A sur la chaîne siliciée. L'invention concerne également des procédés pour la préparation de ces composés, les compositions notamment cosmétiques ou pharmaceutiques les comprenant, et leur utilisation en tant qu'agent antioxydant et/ou agent anti- radicaux libres, en particulier pour traiter le stress oxydant, traiter les effets de l'exposition au soleil et prévenir le vieillissement.
Richard Herve
Xu Jinzhu
L'oreal
Robic
LandOfFree
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