Grevillosides J–Q, Arbutin Derivatives from the Leaves of <i>Grevillea robusta</i> and Their Melanogenesis Inhibitory Activity
作者:Yukiko Yamashita-Higuchi、Sachiko Sugimoto、Katsuyoshi Matsunami、Hideaki Otsuka、Takahito Nakai
DOI:10.1248/cpb.c13-00962
日期:——
From the 1-BuOH-soluble fraction of a MeOH extract of the leaves of Grevillea robusta, new arbutin derivatives and related compounds, named grevillosides J-Q (1-8), together with eight known compounds (9-18) were isolated. Various kind of acyl groups were attached to β-D-glucose at the 6-position through an ester linkage. Their structures were mainly elucidated from one- and two-dimensional NMR spectroscopic
从健壮葛叶的MeOH提取液的1-BuOH可溶级分中,分离出新的熊果苷衍生物和相关化合物,名为葛缕子苷JQ(1-8),以及八种已知化合物(9-18)。各种酰基通过酯键连接在6位的β-D-葡萄糖上。主要从一维和二维NMR光谱数据阐明了它们的结构。为了用作美白和抗黄褐斑剂,测定了分离的化合物以及先前实验(19-31)中分离的化合物对酪氨酸酶和产生黑色素的B16细胞的抑制活性。几种化合物显示出有希望的活性。