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Production mechanism of proepitheaflagallin, a precursor of benzotropolone-type black tea pigment, derived from epigallocatechin via a bicyclo[3.2.1]octane-type intermediate
| タイトル: | Production mechanism of proepitheaflagallin, a precursor of benzotropolone-type black tea pigment, derived from epigallocatechin via a bicyclo[3.2.1]octane-type intermediate |
| 著者: | Matsuo, Yosuke / Tanaka, Takashi / Kouno, Isao |
| 発行日: | 2009年 3月25日 |
| 出版者: | Elsevier BV |
| 引用: | Tetrahedron Letters, 50(12), pp.1348-1351; 2009 |
| 抄録: | An unstable intermediate proepitheaflagallin B (2), a precursor of proepitheaflagallin (3), was isolated as an enzymatic oxidation product of (−)-epigallocatechin (1), and the structure of 2 was determined based on spectroscopic data. The structure and its decomposition revealed that the detailed production mechanism of proepitheaflagallin (3) via a bicyclo[3.2.1]octane-type intermediate was related to that of major black tea pigments, theaflavins. |
| キーワード: | Benzotropolone / Bicyclo[3.2.1]octane / Black tea / Enzymatic oxidation / Epigallocatechin / Proepitheaflagallin / Theaflavin |
| URI: | http://hdl.handle.net/10069/20914 |
| ISSN: | 00404039 |
| DOI: | 10.1016/j.tetlet.2009.01.030 |
| 権利: | Copyright (c) 2009 Elsevier Ltd All rights reserved. |
| 資料タイプ: | Journal Article |
| 原稿種類: | author |
| 出現コレクション: | 050 学術雑誌論文
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引用URI :
http://hdl.handle.net/10069/20914
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