Rare biscoumarins and a chlorogenic acid derivative from Erycibe obtusifolia

被引:49
作者
Liu, Jian
Feng, Ziming
Xu, Jianfu
Wang, Yinghong
Zhang, Peicheng [1 ]
机构
[1] Peking Union Med Coll, Inst Mat Med, Minist Educ, Key Lab Bioact Subst & Resources Utilizat Chinese, Beijing 100050, Peoples R China
[2] Chinese Acad Med Sci, Beijing 100050, Peoples R China
关键词
Erycibe obtusifolia; Convolvulaceae; coumarin; chlorogenic acid derivative; 7,7 '-dihydroxy-6,6 '-dimethoxy-3,3 '-biscoumarin; 7,7 '-dihydroxy-6,6 '-dimethoxy-8,8 '-biscoumarin;
D O I
10.1016/j.phytochem.2007.05.001
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 [生物化学与分子生物学]; 081704 [应用化学];
摘要
Three coumarins, 7,7'-dihydroxy-6,6'-dimethoxy-3,3'-biscoumarin (1), 7,7'-dihydroxy-6,6'-dimethoxy-8,8'-biscoumarin (2) and 7-O[4'-O-(3",4"-dihydroxycinnamyl)-beta-D-glueopyranosyl]-6-methoxycoumarin (3), and a chlorogenic acid derivative, methyl-3-O-(4"hydroxy-3",5"-dimethoxybenzoyl)-chlorogenate (4) were isolated from the roots of Erycibe obtusifolia along with four known coumarins, scopoletin (5), scopolin (6), cleomiscosin A (7) and cleomiscosin B (8). Their structures were elucidated by spectroscopic methods. Among them, compounds (1) and (2) are rare carbon-carbon linked symmetrical biscoumarins. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1775 / 1780
页数:6
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