Stopped-flow-optical Absorption and -ESR Detection of Rutin (Quercetin-3-O-rutinoside) B-ring Catechol Aroxyl Radicals Generated during Redox Reaction between Rutin and O₂^−• Radical in DMSO

Keiko Kuwabara,Natsuki Nishio,Ryota Nakano,Yasuhiro Sakurai,Tomoko Yamaguchi,Yusuke Miyake,Kenji Kanaori,Kunihiko Tajima

Chemistry Letters（2022）

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摘要

Stopped-flow-optical absorption and -electron spin resonance spectroscopies were employed to analyze the kinetic behaviors of short-lived intermediate radicals in redox reactions between electrochemically generated O2−• radicals and rutin (Rut(OH)2) in DMSO. The results of both studies indicate the formation of a rutin B-ring catechol-derived aroxyl (Rut(OH)O•) radical in the presence of excess amounts of rutin.

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redox reaction,stopped-flow-optical,o-rutinoside,b-ring

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Stopped-flow-optical Absorption and -ESR Detection of Rutin (Quercetin-3-O-rutinoside) B-ring Catechol Aroxyl Radicals Generated during Redox Reaction between Rutin and O2−• Radical in DMSO

Stopped-flow-optical Absorption and -ESR Detection of Rutin (Quercetin-3-O-rutinoside) B-ring Catechol Aroxyl Radicals Generated during Redox Reaction between Rutin and O₂^−• Radical in DMSO