Direct Oxidative Deprotection using Montmorillonite Supported Bis(trimethylsilyl)chromate
作者:M. M. Heravi、D. Ajami、K. Tabar-Heydar、M. M. Mojtahedi
DOI:10.1039/a803237h
日期:——
Direct oxidative deprotection of different trimethylsilyl ethers to their corresponding carbonyl compounds has been achieved using montmorillonite K-10 supported bis(trimethylsilyl)chromate in dichloromethane.
Direct Oxidative Deprotection of Trimethylsilyl Ethers to their Corresponding Carbonyl Compounds with Bis (trimethylsilyl) Chromate Supported onto Silica Gel in Aprotic Solvent
作者:M. M. Heravi、D. Ajami And、K. Tabar-heydar
DOI:10.1080/00397919908086064
日期:1999.3
Abstract Primary and secondary trimethylsilyl ethers are converted to their carbonyl compounds effeciently using bis (Trimethylsilyl) chromate supported on silica gel in dichloromethane. Benzylic double bonds are not prone to cleavagereactions with this method.
[EN] EXTERNAL PREPARATION FOR SKIN<br/>[FR] PREPARATION EXTERNE POUR LA PEAU
申请人:SHOWA DENKO KK
公开号:WO2005094777A1
公开(公告)日:2005-10-13
The present invention provides an external preparation for skin, which comprises a multi-branched polysaccharide derivative with multi-branched polysaccharide skeleton consisting of saccharides as constituent units, wherein at least one of hydroxyl (OH) groups in the multi-branched polysaccharide skeleton is substituted by OR (wherein R represents a hydrogen atom, a hydrocarbon having 1 to 30 carbon groups or a hydrocarbon having 1 to 30 carbon groups which has hetero atom), which can give moisture and turgor to the skin, and cosmetics containing the external preparation.
[EN] TOPICAL SLIMMING PREPARATION AND A COSMETIC CONTAINING A CARNITINE DERIVATIVE<br/>[FR] PRÉPARATION EXTERNE POUR L'AMINCISSEMENT DE LA PEAU ET PRODUIT COSMÉTIQUE CONTENANT CETTE PRÉPARATION
申请人:SHOWA DENKO KK
公开号:WO2005115326A1
公开(公告)日:2005-12-08
The invention provides a slimming skin external preparation and a cosmetic that contain a carnitine derivative having excellent skin affinity and percutaneous absorption properties and capable of enhancing the fat metabolism, and that can treat, reduce or prevent the obesity by functioning as a lipolytic agent to enhance the fat metabolism of general or local subcutaneous fat tissues. The slimming skin external preparation contains a particular carnitine derivative such as a cylcarnitines and alcohol carnitine esters and preferably other slimming and skin-care ingredients.
[EN] HYDROXYCITRIC ACID DERIVATIVES AND SKIN EXTERNAL PREPARATIONS CONTAINING THE SAME<br/>[FR] DERIVES D'ACIDE HYDROXYCITRIQUE ET PREPARATIONS EXTERNES POUR LA PEAU LES CONTENANT
申请人:SHOWA DENKO KK
公开号:WO2006033476A1
公开(公告)日:2006-03-30
Hydroxycitric acid derivatives and salts thereof are provided which are useful as active ingredients of skin external preparations and cosmetics. Also provided are processes for production of the hydroxycitric acid derivatives, and skin external preparations and cosmetics containing the hydroxycitric acid derivatives. Specific hydroxycitric acid derivatives or salts thereof are produced wherein at least one of the hydroxyl groups of hydroxycitric acid, or least one of the hydroxyl groups and at least one carboxyl group of hydroxycitric acid are modified to linkage moieties breakable by biological enzyme reaction. The hydroxycitric acid derivatives or salts thereof are added in skin external preparations and cosmetics.