Polygonumosides A鈥揇, Stilbene Derivatives from Processed Roots of Polygonum multiflorum

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• 作者：Shi-Lun Yan ; Yan-Fang Su ; Lei Chen ; Meng Que ; Xiu-Mei Gao ; Jun-Biao Chang
• 刊名：Journal of Natural Products
• 出版年：2014
• 出版时间：February 28, 2014
• 年：2014
• 卷：77
• 期：2
• 页码：397-401
• 全文大小：255K
• 年卷期：v.77,no.2(February 28, 2014)
• ISSN：1520-6025

文摘

Four new stilbene derivatives, polygonumosides A鈥揇 (1鈥?b>4), were isolated from the processed roots of Polygonum multiflorum. Their structures were elucidated by spectroscopic analysis, including 1D and 2D NMR and ECD. Polygonumosides A (1) and B (2), possessing an unprecedented tetracyclic skeleton, were assigned as 2S- and 2R-2-(4-hydroxyphenyl)-9,10,11-trihydroxy-2H-benzo[c]furo[2,3-f]chromen-7(3H)-one-4-O-尾-d-glucopyranosides, respectively, while polygonumosides C (3) and D (4) were assigned as a pair of diastereomeric stilbene glucoside dimers.