Unusually sulfated and oxygenated steroids from Withania somnifera
Unusually sulfated and oxygenated steroids from Withania somnifera
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DOI：
10.1016/j.phytochem.2005.10.001
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发表时间：
2005-12-01
期刊：
影响因子：
3.8
通讯作者：
Tuli, R
中科院分区：
文献类型：
--
作者：
Misra, L;Lal, P;Tuli, R
从睡茄叶中分离出四种 (1, 8-10) 和六种已知 (2-7) 睡茄内酯。新化合物中，有10个具有罕见的A环饱和的3-O-硫酸酯基团，9个含有罕见的1,4-二烯-3-酮基团。化合物8在A环中不具有常见的2,3不饱和度，而1具有罕见的C-16双键。通过光谱方法和化学转化阐明了所有化合物的结构。 (c) 2005 Elsevier Ltd. 保留所有权利。
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.