Cosmetic

阅读:600发布:2021-11-29

专利汇可以提供Cosmetic专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:An ascorbic acid-N-acylamino acid ester shown by the formula I (R is alcohol residue; X is alpha-position side chain residue of monoaminomonocarboxylic acid or diaminomonocarboxylic acid; Y is H or a group shown by the formula II). EXAMPLE:Ascorbic acid-3,6-di-N-palmitoylglycine ester. USE:A cosmetic. One or more compounds shown by the formula I are blended, especially used as a whitening cosmetic. It shows prevention of blackening of ascorbic acid, elimination of stains and freckles, etc., skin beautifying effects, etc. and can be stored for a long time. PROCESS:Ascorbic acid, or its derivative is reacted with an acid chloride (e.g., N- acylamino acid chloride, N-palmitoylglycine, etc.) in a solvent, e.g., THF, acetone, etc. in the presence of a base, e.g., triethylamine, etc., to give a compound shown by the formula I.,下面是Cosmetic专利的具体信息内容。

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