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Chlorinated Withanolides from Withania somnifera
Tong, Xiaoqin Zhang, Huaping Timmermann, Barbara N.
Tong, Xiaoqin
Zhang, Huaping
Timmermann, Barbara N.
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Abstract
A chlorinated withanolide, 6α-chloro-5β,17α-dihydroxywithaferin A (1), and nine known withanolides, 6α-chloro-5β-hydroxywithaferin A (2), (22R)-5β-formyl-6β,27-dihydroxy-1-oxo-4-norwith-24-enolide, withaferin A, 2,3-dihydrowithaferin A, 3-methoxy-2,3-dihydrowithaferin A, 2,3-didehydrosomnifericin, withanone, withanoside IV and withanoside X, were isolated from Withania somnifera (Solanaceae). All structures were elucidated on the basis of spectroscopic methods (IR, HRESIMS, 1D/2D NMR). X-ray crystallography confirmed the absolute configuration of 1.
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Date
2011-12
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Elsevier
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Keywords
Chlorinated withanolide, Withania somnifera, Solanaceae, NMR, Crystal structure
Citation
Tong, Xiaoqin, Huaping Zhang, and Barbara N. Timmermann. “Chlorinated Withanolides from Withania Somnifera.” Phytochemistry letters 4.4 (2011): 411–414.