期刊
PHYTOCHEMISTRY LETTERS
卷 21, 期 -, 页码 84-89出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.phytol.2017.05.023
关键词
Opilia amentacea; Opiliaceae; Flavonoids; Antioxidant activity; Tyrosinase inhibitory activity
资金
- CNRS
- Conseil Regional de Champagne Ardenne (CRCA)
- Conseil General de la Marne
- Ministry of Higher Education and Research (MESR)
- PlANET CPER project
- LVMH recherche
Two previously undescribed flavonol tetraglycosides, isorhamnetin-3-O-a-L-rhamnopyranosyl-(1 degrees 6)-beta-D-galactopyranosyl-(1 -> 4)-alpha-L-rhamnopyranosyl-(1 -> 6)-beta-D-glucopyranoside (1) and isorhamnetin-3-O-alpha-L-rhamnopyranosyl-(1 ->)-beta-D-galactopyranosyl-(1 -> 4)-alpha-L-rhamnopyranosyl-(1 -> 6)-beta-D-galactopyranoside (2), along with nine known compounds including seven flavonoids and two lignans, were isolated from the leaves of Opilia amentacea Roxb (Opiliaceae). Their structures were established on the basis of spectroscopic analysis. The DPPH radical scavenging activity of compounds 1-11 was evaluated. In addition, all compounds were evaluated for their tyrosinase inhibitions by using in vitro mushroom tyrosinase assay. Only 5,5-dimethoxylariciresinol-4-O-beta D- glucopyranoside (10) and eleutheroside E1 (11) exhibited significant tyrosinase inhibition (IC50 42.1 and 28 mu M, respectively) and DPPH radical scavenging activity (IC50 85.1 and 42.1 mu M, respectively) compared with the positive controls.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据