期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 25, 期 4, 页码 799-802出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2014.12.082
关键词
Piper methysticum; Chalcones; Flavokawain B and C; Melanogenesis
资金
- Catholic University of Korea
The ethanolic extract of the root of Piper methysticum was found to inhibit melanogenesis in MSH-activated B16 melanoma cells. Flavokawains B and C were isolated from this extract based on their anti-melanogenesis activity and found to inhibit melanogenesis with IC50 values of 7.7 mu M and 6.9 mu M, respectively. Flavokawain analogs were synthesized through a Claisen-Schmidt condensation of their corresponding acetophenones and benzaldehydes and were evaluated in terms of their tyrosinase inhibitory and anti-melanogenesis activities. Compound 1b was the most potent of these with an IC50 value of 2.3 mu M in melanogenesis inhibition assays using MSH-activated B16 melanoma cells. (C) 2015 Elsevier Ltd. All rights reserved.
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