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Title:
FLAVONOID COMPLEXES COMPRISING CYCLODEXTRINES
Document Type and Number:
WIPO Patent Application WO2006056297
Kind Code:
A9
Abstract:
The invention relates to complexes of specific flavonoid derivatives of formula (I), wherein R1 and R2 are selected among H and OR11, OR11 independently representing OH, straight-chain or branched C1 to C20 alkyloxy groups, straight-chain or branched C3 to C20 alkenyloxy groups, straight-chain or branched C1 to C20 hydroxyalkoxy groups, the hydroxy group(s) being optionally bonded to primary or secondary carbon atoms of the chain and the alkyl chain being optionally interrupted by oxygen, and/or C3 to C10 cycloalkyloxy groups and/or C3 to C12 cycloalkenyloxy groups, the rings being optionally bridged by -(CH2)n groups, wherein n = 1 to 3, and/or monoglycosyl radicals and/or oligoglycosyl radicals, provided that at least one of the radicals R1 and R2 represents OR11, while R3 to R10 can be identical or different and independently represent radicals that are largely inert regarding UV properties. Also disclosed are preparations containing such complexes, corresponding methods for producing the inventive complexes and the preparations containing the same, as well as the use thereof, especially for nourishing, preserving, and improving the overall condition of skin or hair and providing protection from light.

Inventors:
CAROLA CHRISTOPHE (DE)
TOULLEC ANNE (DE)
BUCHHOLZ HERWIG (DE)
Application Number:
PCT/EP2005/011738
Publication Date:
May 31, 2007
Filing Date:
November 03, 2005
Export Citation:
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Assignee:
MERCK PATENT GMBH (DE)
CAROLA CHRISTOPHE (DE)
TOULLEC ANNE (DE)
BUCHHOLZ HERWIG (DE)
International Classes:
C07H17/07
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