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Oxidative Dimer Produced from a 2,3,4-Trihydroxybenzoic Ester

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Title: Oxidative Dimer Produced from a 2,3,4-Trihydroxybenzoic Ester
Authors: KODAMA, Asuka Browse this author
SHIBANO, Hidetoshi Browse this author
KAWABATA, Jun Browse this author →KAKEN DB
Keywords: 2,3,4-trihydroxybenzoic acid
phenolic acid
oxidative coupling
DPPH radical
Issue Date: Jul-2007
Publisher: Japan Society for Bioscience, Biotechnology, and Agrochemistry
Journal Title: Bioscience, Biotechnology, and Biochemistry
Volume: 71
Issue: 7
Start Page: 1731
End Page: 1734
Publisher DOI: 10.1271/bbb.70139
Abstract: The DPPH radical-scavenging abilities of the naturally occurring phenolic acid, 2,3,4-trihydroxybenzoic acid, and its methyl ester were evaluated. Both compounds in acetonitrile scavenged as many as four radicals compared to three or fewer radical consumption in acetone or ethanol. Only the ester showed relatively high ability in methanol. Oxidation with o-chloranil in acetonitrile resulted in methyl 2,3,4-trihydroxybenzoate giving a novel benzocoumarin-type dimer, its chemical structure being confirmed by spectroscopic evidence. The formation of this dimer might partly account for the higher radical-scavenging efficiency of the ester in acetonitrile or methanol.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 川端 潤

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