ASCORBIC ACID DERIVATIVES, THEIR PREPARATION METHODS, INTERMEDIATES AND USES IN COSMETICS
申请人:Li Huashan
公开号:US20100204464A1
公开(公告)日:2010-08-12
A kind of ascorbic acid derivates 3-O-glyco-L-ascorbic acid, their preparation methods, intermediates and uses in cosmetics. The derivates used as vitamin C precursors have better physiological effect than 2-O-α-D-glucopyranosyl ascorbic acid (AA-2G) and are more stable. Present compounds can be used in many fields, such as in cosmetics, pharmaceuticals, foodstuffs and livestock feed, and especially as whitening agents in cosmetics. The preparation method involves protecting the 5,6-dihydroxyl of ascorbic acid, then coupling with 1-haloacylglycosyl, obtaining the intermediate 3-O-(acylglycosyl)-(5,6-O-isopropylidine)-L-ascorbic acid, removing the isopropylidine and acyl from the intermediates, thereby obtaining the target substance.
一种抗坏血酸衍生物3-O-糖基-L-抗坏血酸酸,其制备方法,中间体和在化妆品中的用途。这些衍生物作为维生素C前体比2-O-α-D-葡萄糖吡喃糖基抗坏血酸(AA-2G)具有更好的生理效果,并且更加稳定。目前的化合物可以用于许多领域,例如化妆品,药品,食品和饲料,特别是作为化妆品中的美白剂。制备方法涉及保护抗坏血酸的5,6-二羟基,然后与1-卤代酰基糖基偶联,得到中间体3-O-(酰基糖基)-(5,6-O-异丙基亚甲基)-L-抗坏血酸酸,从中间体中去除异丙基亚甲基和酰基,从而得到目标物质。