Mechanism of oolongtheanin formation via three intermediates

被引：12

作者：

Hirose, Sayumi ^{[1
]}

Kamatari, Yuji O. ^{[2
]}

Yanase, Emiko ^{[1
,3
]}

机构：

[1] Gifu Univ, United Grad Sch Agr Sci, 1-1 Yanagido, Gifu 5011193, Japan

[2] Gifu Univ, Life Sci Res Ctr, Div Instrumental Anal, 1-1 Yanagido, Gifu 5011193, Japan

[3] Gifu Univ, Fac Appl Biol Sci, 1-1 Yanagido, Gifu 5011193, Japan

来源：

TETRAHEDRON LETTERS | 2020年 / 61卷 / 11-12期

基金：

日本学术振兴会;

关键词：

Oolongtheanin; Formation mechanism; Intermediate; Epigallocatechin; Oolong tea; OOLONG TEA; BLACK-TEA; POLYPHENOLS; CHOLESTEROL; OXIDATION; CATECHINS; MICE; EPIGALLOCATECHIN; SOLUBILITY; TANNINS;

D O I：

10.1016/j.tetlet.2020.151601

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

To clarify the mechanism of oolongtheanin formation, the oxidations of (-)-epigallocatechin and (-)-epigallocatechin gallate were investigated, and key intermediates were isolated. These intermediates were determined to be dehydrotheasinensins and pro-oolongtheanins, which we have reported previously, and one novel intermediate. Based on the chemical structures of these intermediates, a mechanism was proposed for oolongtheanin formation from catechins, and confirmed by NMR and GC-MS analysis. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：5

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