Disclosed herein is novel kojic acid derivatives represented by the following formula (I): ##STR1## wherein, R.sub.1 is a hydrogen atom or hydroxyl group; and R.sub.2 is a hydroxyl group, having a strong activity of inhibiting tyrosinase, which is involved in a melanin formation. The compounds of the present invention shows a stronger tyrosinase-inhibiting and radical scavenging activities, and has a low side effects to the human skin.
本文披露了一种新型
曲酸衍
生物,其
化学式如下(I):##STR1##其中,R.sub.1是氢原子或羟基;R.sub.2是羟基,具有强烈的抑制
酪氨酸酶活性,该酶参与
黑色素形成。本发明的化合物显示出更强的
酪氨酸酶抑制和自由基清除活性,并对人体皮肤的副作用较低。