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Deuterium labelling of theaflavin

✍ Scribed by Weimin Peng; Yin-fang Yao

Publisher
John Wiley and Sons
Year
2009
Tongue
French
Weight
123 KB
Volume
52
Category
Article
ISSN
0022-2135

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✦ Synopsis

Abstract

An efficient deuterium labelling of theaflavin, aiming at radiolabelling of theaflavin, was accomplished for the first time by using 4‐deuterium‐labelled epi‐catechin as the precursor and the resulting D‐labelled theaflavin was fully characterized by ^1^H NMR, ^13^C NMR, IR spectroscopy and ESI‐MS. The synthesis features a novel efficient polyphenol oxidase (PPO) catalyzed benzotropolone formation. PPO was bound onto a selected polymer by a novel efficient method developed in this lab. Copyright Β© 2009 John Wiley & Sons, Ltd.

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