期刊
PHYTOCHEMISTRY
卷 66, 期 23, 页码 2702-2707出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2005.10.001
关键词
Withania somnifera L.; Solanaceae; Ashwagandha; withanolides; withasteroids; sulfated; oxygenated withanolide
Four (1, 8-10) and six known (2-7) withanolides were isolated from the leaves of Withania somnifera. Among the new compounds, 10 possessed the rare 3-O-sulfate group with the Saturation in A ring and 9 contained unusual 1,4-dien-3-one group. Compound 8 did not have usual 2,3 unsaturation in A ring while 1 had the rare C-16 double bond. The structures of all the compounds were elucidated by spectroscopic methods and chemical transformation. (c) 2005 Elsevier Ltd. All rights reserved.
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