Cephalotoside A:: a tridesmosidic cycloartane type glycoside from Astragalus cephalotes var. brevicalyx

被引:26
作者
Calis, I [1 ]
Yusufoglu, H
Zerbe, O
Sticher, O
机构
[1] Hacettepe Univ, Fac Pharm, Dept Pharmacognosy, TR-06100 Ankara, Turkey
[2] ETH Zurich, Swiss Fed Inst Technol, Dept Pharm, CH-8057 Zurich, Switzerland
关键词
Astragalus cephalotes var. brevicalyx; Leguminosae; cycloartane glycosides; cephalotoside A; cyclocanthosides A; D; E;
D O I
10.1016/S0031-9422(98)00601-3
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
A new tridesmosidic cycloartane type glycoside, cephalotoside A was isolated from the roots of Astragahus cephalotes var. brevicalyx in addition to the known glycosides cyclocanthosides A, D and E. The structure of the new compound was determined by spectral (IR, H-1- and C-13-NMR, and FABMS) and chemical (acetylation) methods and established as 3 beta-(beta-D-xylopyranosyl)oxy-16 beta-(beta-D-glucopyranosyl)oxy-24- (beta-D-xylopyranosyl)oxy-cycloarlane-6 alpha,25-diol. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:843 / 847
页数:5
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