Characterization of the oxidation products of (-)-epigallocatechin gallate, a bioactive tea polyphenol, on incubation in neutral solution

被引：29

作者：

Hatano, T ^{[1
]}

Hori, M ^{[1
]}

Kusuda, M ^{[1
]}

Ohyabu, T ^{[1
]}

Ito, H ^{[1
]}

Yoshida, T ^{[1
]}

机构：

[1] Okayama Univ, Fac Pharmaceut Sci, Okayama 7008530, Japan

来源：

HETEROCYCLES | 2004年 / 63卷 / 07期

关键词：

D O I：

10.3987/COM-04-10039

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

(-)-Epigallocatechin gallate (EGCG) (1) changes rapidly into various products in neutral solution containing trace amounts of metal ions as catalysts. In addition to theasinensins A (2) and D (3), (-)-gallocatechin gallate (4), and gallic acid, five products were isolated from a reaction mixture resulting from the incubation of 1. MS and NMR spectroscopic analyses of the products revealed two monomeric [EGCG-MOx-M1 (5) and M2 (6)], and three dimeric [EGCG-MOx-D1 (7), D2 (8) and D3 (9)] structures.

引用

页码：1547 / 1554

页数：8

共 15 条

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[2]

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[3]

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[4]

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