Syzyginins A and B, two ellagitannins from Syzygium aromaticum

被引：25

作者：

Tanaka, T

Orii, Y

Nonaka, GI

Nishioka, I

Kouno, I

机构：

[1] NAGASAKI UNIV,SCH PHARMACEUT SCI,NAGASAKI 852,JAPAN

[2] KYUSHU UNIV,FAC PHARMACEUT SCI,HIGASHI KU,FUKUOKA 81282,JAPAN

来源：

PHYTOCHEMISTRY | 1996年 / 43卷 / 06期

关键词：

Syzygium aromaticum; Myrtaceae; leaves; tannins; tergallic acid;

D O I：

10.1016/S0031-9422(96)00508-0

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Two new ellagitannins, named syzyginins A and B, were isolated from the leaves of clove (Syzygium aromaticum.). Syzyginin A was characterized as 1,2,3-tri-O-galloyl-4,6-(S)-tergalloyl-beta-D-glucopyranose. Syzyginin B was a novel hydrolysable tannin possessing a new aromatic acyl group, syzygyl, which has a dibenzo-1,4-dioxin structure probably derived from a tergalloyl group. Structures were established on the basis of chemical and spectroscopic evidence. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：1345 / 1348

页数：4

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