@misc{oai:repo.qst.go.jp:00067687,
 author = {Nakanishi, Ikuo and Miyazaki, Kentaro and Ohkubo, Kei and Urano, Shiro and Ueda, Junichi and Hakamata, Wataru and Okuda, Haruhiro and Ozawa, Toshihiko and Fukuzumi, Shunichi and Fukuhara, Kiyoshi and Ikota, Nobuo and 中西 郁夫 and 上田 順市 and 小澤 俊彦 and 伊古田 暢夫},
 month = {Nov},
 note = {The rate of hydrogen transfer from (+)-catechin, a planar catechin derivative, or quercetin to cumylperoxyl radical was accelerated significantly in the presence of scandium triflate in oxygen-saturated propipnitrile at 203 K. This indicates that the hydrogen-transfer reaction proceeds via an initial electron transfer from (+)-catechin, planar catechin, or quercetin to cumylperoxyl radical to produce the corresponding radical cation and cumylperoxylate anion followed by proton transfer.  The second-harmonic alternting current voltammograms (SHACV) were recorded for the flavonoids to estimate their one-electron oxidation potentials in acetonitrile containing 0.1 M tetrabutylammonium perchlorate at 298 K. The more negatively shifted the oxidation potential, the faster the hydrogentransfer reaction becomes. On the other hand, no effect of scandium triflate was observed on the rate of hydrogen transfer from luteolin or kaempferol, which proceeds via onestep hydrogen atom transfer rather than electron transfer., 10th Annual Meeting of the Society for Free Radical Biology and Medicine},
 title = {Oxidation Potentials of Antioxidative Flavonoids and the Radical-Scavenging Abilities},
 year = {2003}
}