TANNINS AND RELATED-COMPOUNDS .101. ISOLATION AND STRUCTURES OF C-GLYCOSYL HYDROLYZABLE TANNINS FROM TURKISH GALLS

被引：8
|
作者：
NONAKA, GI [1 ]
SAKAI, T [1 ]
NAKAYAMA, S [1 ]
NISHIOKA, I [1 ]
机构：
[1] KYUSHU UNIV 62,FAC PHARMACEUT SCI,3-1-1 MAIDASHI,HIGASHI KU,FUKUOKA 812,JAPAN
来源：
JOURNAL OF NATURAL PRODUCTS | 1990年 / 53卷 / 05期
关键词：
D O I：
10.1021/np50071a024
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A chemical examination of Turkish galls (Quercus lustitanica) has led to the isolation of four C-glycosidic hydrolyzable tannins, among which three were found to be identical with the known compounds pterocarinin A [1], castalagin [2], and castavaloninic acid [4]. The structure of the new tannin, isocastavaloninic acid [5], was established on the basis of spectroscopic and chemical evidence. The complete assignment of the structure of castavaloninic acid [4], including the absolute stereostructure and the orientation of the valoneayl group, is also described. © 1990, American Chemical Society. All rights reserved.
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收藏
页码：1297 / 1301
页数：5
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