申请人:Saitoh Yuko
公开号:US20120258063A1
公开(公告)日:2012-10-11
An object is to provide an external preparation for skin preferably usable to prevent or ameliorate pigmentation. The object is achieved by providing a preventing or ameliorating agent for pigmentation, consisting of a compound represented by the following general formula (1), an isomer thereof, and/or a pharmacologically acceptable salt thereof, and an external preparation for skin containing the same as a component:
[wherein R
1
represents an unsubstituted aromatic group or an aromatic group having any substituent; R
2
represents a hydrogen atom, a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4, or an acyl group having a linear or branched alkyl chain having a number of carbon atom or atoms of 1 to 4; and R
3
represents a hydrogen atom or a linear chain or branched chain alkyl group having a number of carbon atom or atoms of 1 to 4.]
本发明旨在提供一种外用制剂,特别是用于预防或改善色素沉着的皮肤外用制剂。本发明通过提供一种预防或改善色素沉着的制剂,该制剂包括以下一般式(1)所表示的化合物,其异构体和/或药学上可接受的盐,并且包含该化合物作为组分的皮肤外用制剂,从而实现上述目的:
[其中R1表示未取代的芳香基或具有任何取代基的芳香基; R2表示氢原子,具有1至4个碳原子的线性链或支链烷基,或具有1至4个碳原子的线性或支链烷基链的酰基; R3表示氢原子或具有1至4个碳原子的线性链或支链烷基。]