Journal
TETRAHEDRON
Volume 60, Issue 3, Pages 595-600Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2003.10.117
Keywords
resveratrol; laccase; polyphenols; biotransformation
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Laccases from different sources have been used, for the first time, for the selective oxidation of the stilbenic phytoalexin transresveratrol (3,5,4'-trihydroxystilbene, 1a) on a preparative scale. Specifically, the enzymes from Myceliophtora thermophyla and from Trametes pubescens gave the dehydrodimer 2a in 31 and 18% isolated yields, respectively. These results compare favorably with the reported data for the chemically catalyzed dimerization of la (18% yields). The antioxidant properties of 2a have also been investigated. (C) 2003 Elsevier Ltd. All rights reserved.
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