[Chemical constituents of Siegesbeckia pubescens].
OBJECTIVE
To study the components in aerial part of Siegesbeckia pubescens.


METHODS
The compounds were isolated and purified by silica gel, sephadex LH-20 and other column chromatography. Structures were elucidated by spectroscopic methods.


RESULTS
Four compounds were isolated from S. pubescens and were characterized as dimethyl-21-ethenetylene-darutigenol-3-O-beta-D-glucopyranosid (1), darutigenol (2), darutoside (3), stigmaster-3-O-beta-D-glucopyranosid (4).


CONCLUSIONS
Compound 1 is a new compound.
Ou
Zhiqiang
Z
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
Zhao
Lang
L
Wang
Kan
K
Fu
Hongzheng
H
D019659:Asteraceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000032:analysis* / Q000737:chemistry*; D007536:Isomerism
D004365:Drugs, Chinese Herbal