Four new hydrolyzable tannins and an acylated flavonol glycoside from Euphorbia maculata

被引：22

作者：

Amakura, Y

Kawada, K

Hatano, T

Agata, I

Sugaya, T

Nishibe, S

Okuda, T

Yoshida, T

机构：

[1] OKAYAMA UNIV,FAC PHARMACEUT SCI,TSUSHIMA,OKAYAMA 700,JAPAN

[2] HLTH SCI UNIV HOKKAIDO,FAC PHARMACEUT SCI,ISHIKARI,HOKKAIDO 06102,JAPAN

来源：

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 1997年 / 75卷 / 06期

关键词：

Euphorbia maculata; Euphorbiaceae; tannin; eumaculin B; eumaculin E;

D O I：

10.1139/v97-088

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of a new acylated flavonol glycoside from the leaf extract of Euphorbia maculata was characterized as quercetin 3-O-(2 '',3 ''-di-O-galloyl)-beta-D-glucopyranoside. Four new hydrolyzable tannins together with twelve known tannins were also isolated and their structures were established by spectral and chemical means as 1,2,6-tri-O-galloyl-alpha-D-glucose, 1-O-galloyl-2,4;3,6-di-O-chebuloyl-beta-D-glucose (eumaculin E), and dimers (eumaculins B and D) having a tergalloyl and a macaranoyl group as the linking unit of monomers, respectively.

引用

页码：727 / 733

页数：7

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