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Structures of enzymatic oxidation products of epigallocatechin
http://hdl.handle.net/10069/33913
http://hdl.handle.net/10069/33913acf279c5-1a6a-4f5d-99a8-2de0489a8efa
名前 / ファイル | ライセンス | アクション |
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Tetra69_8952.pdf (458.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-10-28 | |||||
タイトル | ||||||
タイトル | Structures of enzymatic oxidation products of epigallocatechin | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Black tea | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Epigallocatechin | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Oxidation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Thearubigins | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Theasinensins | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Matsuo, Yosuke
× Matsuo, Yosuke× Hayashi, Toshimi× Saito, Yoshinori× Kouno, Isao× Tanaka, Takashi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To understand the structures of uncharacterized black tea polyphenols, the oxidation products of (-)-epigallocatechin were investigated. Enzymatic oxidation and subsequent heating of the reaction mixture afforded four new oxidation products (6, and 9-11) along with theasinensins C (4) and E (5), dehydrotheasinensin E (12), epitheaflagallin, hydroxytheaflavin, and desgalloyl oolongtheanin. The structures of the new compounds were determined chemically and spectroscopically. Isotheasinensin E (6) is a C-2 epimer of 5, and compounds 9 and 10 are oxidation products of 12. Another new compound, 11, is a yellow pigment and presumed to be a degradation product of proepitheaflagallin. The results disclosed new oxidation mechanisms that occur during black tea production. | |||||
書誌情報 |
Tetrahedron 巻 69, 号 42, p. 8952-8958, 発行日 2013-10-21 |
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出版者 | ||||||
出版者 | Elsevier Limited | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00404020 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.tet.2013.07.045 | |||||
権利 | ||||||
権利情報 | © 2013 Elsevier Ltd. All rights reserved. | |||||
権利 | ||||||
権利情報 | NOTICE: this is the author’s version of a work that was accepted for publication in Tetrahedron. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Tetrahedron, 69, 42(2013) | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Tetrahedron, 69(42), pp.8952-8958; 2013 |