申请人:Showa Denko Kabushiki Kaisha
公开号:EP1077066A1
公开(公告)日:2001-02-21
The present invention relates to an agent for preventing and treating skin diseases comprising an ascorbic acid derivative, a composition containing the agent and a preparation containing the agent, each of which has an effect of preventing and/or treating skin diseases and is employable in various forms such as a medical product, a quasi-drug and a cosmetic material. An object of the present invention is to provide an agent, which causes neither irritation nor other side effects and is capable of effectively preventing and/or treating skin diseases, and a composition containing the agent.
The agent for preventing and treating skin diseases according to the present invention comprises as an active ingredient an ascorbic acid derivative which is a compound represented by the following formula (1) or a salt thereof and which per se exhibits no anti-oxidation activity but is capable of transforming in vivo into a compound having an anti-oxidation activity;
wherein R1 represents a group capable of bonding to the carbon at the 2-position of the ascorbic acid skeleton through an ether or ester bond and transformable in vivo into a hydroxyl group, and R2 to R4 may be the same or different and each represents a hydroxyl group or a group derived therefrom.
本发明涉及一种预防和治疗皮肤病的药剂,包括一种抗坏血酸衍生物、一种含有该药剂的组合物和一种含有该药剂的制剂,每种药剂都具有预防和/或治疗皮肤病的效果,并可用于各种形式,如医疗产品、准药品和化妆品材料。本发明的目的是提供一种既不会产生刺激也不会产生其他副作用、能够有效预防和/或治疗皮肤病的制剂,以及一种含有该制剂的组合物。
根据本发明,预防和治疗皮肤病的制剂包括作为活性成分的抗坏血酸衍生物,抗坏血酸衍生物是由下式(1)表示的化合物或其盐,其本身不具有抗氧化活性,但能在体内转化为具有抗氧化活性的化合物;
其中 R1 代表能通过醚键或酯键与抗坏血酸骨架 2 位碳结合并能在体内转化为羟基的基团,R2 至 R4 可以相同或不同,且各代表一个羟基或由其衍生的基团。