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Brauhenefloroside E 和 F;来自 Stocksia brauhica Linn 的酰化黄酮醇糖苷

Brauhenefloroside E and F; acylated flavonol glycosides from Stocksia brauhica Linn.

机构信息

H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.

出版信息

Magn Reson Chem. 2010 Apr;48(4):304-8. doi: 10.1002/mrc.2578.

Abstract

Two new acylated flavonol glycosides, 3-O-{[2-O-beta-D-glucopyranosyl]-3-[O-beta-D-glucopyranosyl]-4-[(6-O-p-coumaroyl)-O-beta-D-glucopyranosyl]}-alpha-L-rhamnopyranosyl-kaempferol 7-O-alpha-L-rhamnopyranoside and 3-O-{2-[(6-O-p-coumaroyl)-O-beta-D-glucopyranosyl]-3-[O-beta-D-glucopyranosyl]-4-[(6-O-p-coumaroyl)-O-beta-D-glucopyranosyl]}-alpha-L-rhamnopyranosyl-kaempferol 7-O-alpha-L-rhamnopyranoside, trivially named as brauhenefloroside E (1) and F (2), respectively, were isolated from the fruits of Stocksia brauhica and their structures were elucidated using spectroscopic methods, including 2D NMR experiments.

摘要

从 Stocksia brauhica 的果实中分离得到两种新的酰化黄酮醇糖苷:3-O-{[2-O-β-D-吡喃葡萄糖基]-3-[O-β-D-吡喃葡萄糖基]-4-[(6-O-对香豆酰基)-O-β-D-吡喃葡萄糖基]}-α-L-鼠李吡喃糖苷基-山柰酚 7-O-α-L-鼠李吡喃糖苷(1)和 3-O-{2-[(6-O-对香豆酰基)-O-β-D-吡喃葡萄糖基]-3-[O-β-D-吡喃葡萄糖基]-4-[(6-O-对香豆酰基)-O-β-D-吡喃葡萄糖基]}-α-L-鼠李吡喃糖苷基-山柰酚 7-O-α-L-鼠李吡喃糖苷(2),分别命名为 brauhenefloroside E(1)和 F(2)。这些化合物的结构通过光谱学方法,包括 2D NMR 实验进行了阐明。

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