A novel quasi-dimeric oxidation product of (+)-catechin from lipid peroxidation |
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| Authors: | Yuko Hirose Hiroshi Yamaoka Mitsuru Nakayama |
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| Affiliation: | (1) Department of Chemistry, Faculty of Education, Yamanashi University, Takeda, Kofu, 400 Yamanashi, Japan;(2) Department of Natural Science, Osaka Women’s University, Daisen-cho, Sakai, 590 Osaka, Japan;(3) Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture, Mozuume-machi, Sakai, 591 Osaka, Japan |
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| Abstract: | A novel quasi-dimeric oxidation product of (+)-catechin, formed during the radical-scavenging reaction that prevents lipid peroxidation, was isolated by chromatography, and its structure was elucidated by infrared, ultraviolet and1H and13C nuclear magnetic resonance spectra and mass spectrometry. It was 5′-[3-[3,4-(3′,5′-dihydroxy) benzo-8-oxo-2,7-dioxabicyclo [4.4.0] deca-3,9-dien-10-yl]acryloyl]-(+)-catechin. It is an unusual type of dimer of flavan-3-ol derivatives, which is different from the naturally formed dimer, procyanidin. |
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| Keywords: | (+)-Catechin oxidation product of (+)-catechin lipid peroxidation |
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