Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5262709 | Tetrahedron Letters | 2013 | 4 Pages |
Abstract
Oolongtheanin-3â²-O-gallate (2b) was obtained by treatment of (â)-EGCg (1d) with CuCl2. This transformation was achieved over three steps, with the isolation of two intermediates; their chemical structures were determined through derivatization reactions, MS, and 1D/2D NMR techniques. One intermediate was identified as dehydrotheasinensin A (3); the other was identified as the novel dimer pro-oolongtheanin-3â²-O-gallate (6). Compound 3 was converted to 6 by heating in aprotic solvent, and compound 6 was converted to 2b by addition of water.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Sayumi Hirose, Kaoru Tomatsu, Emiko Yanase,