{"created":"2023-05-15T14:37:37.228443+00:00","id":48534,"links":{},"metadata":{"_buckets":{"deposit":"b299694f-23b8-4660-91c4-d120c92383ef"},"_deposit":{"created_by":1,"id":"48534","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"48534"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00048534","sets":["1"]},"author_link":["487926","487922","487915","487913","487919","487923","487927","487928","487918","487914","487920","487916","487921","487917","487925","487924"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"8","bibliographicPageEnd":"883","bibliographicPageStart":"877","bibliographicVolumeNumber":"85","bibliographic_titles":[{"bibliographic_title":"Bulletin of the Chemical Society of Japan"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The kinetics for the reaction of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical with artepillin C, a prenylated phenylpropanoid found specifically in Brazilian propolis, and its analogues was examined in deaerated acetonitrile (MeCN) to shed light on the mechanism for the radical-scavenging reaction of phenolic antioxidants as well as on the structure-activity relationship.  Among the examined analogues, a compound having a catechol moiety is found to have the largest second-order rate constant (k) for the DPPH radical-scavenging reaction.  The deuterium kinetic isotope effect of 1.6 was observed for the DPPH radical-scavenging reaction of artepillin C in the presence of 0.13 M CD(3)OD or CH(3)OH in deaerated MeCN at 298 K.  The log k values were found to be linearly correlated with calculated energy difference values (D(HT), HT = hydrogen transfer) between the artepillin C analogues and the corresponding phenoxyl radicals, while such a linear correlation cannot be observed between the log k values and calculated ionization potentials (IP), D(HT) - IP, or experimental one-electron oxidation potentials of the artepillin C analogues.  These results together with a calculated structure of the transition state for the reaction between the artepillin C analogue and the DPPH radical suggest that the DPPH radical-scavenging reaction of the artepillin C analogues in deaerated MeCN proceeds via a one-step hydrogen-atom transfer from the phenolic OH group to the DPPH radical rather than an electron transfer followed by proton transfer.","subitem_description_type":"Abstract"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1246/bcsj.20120005","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0009-2673","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kawashima, Tomonori"}],"nameIdentifiers":[{"nameIdentifier":"487913","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Manda, Sushma"}],"nameIdentifiers":[{"nameIdentifier":"487914","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Uto, Yoshihiro"}],"nameIdentifiers":[{"nameIdentifier":"487915","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohkubo, Kei"}],"nameIdentifiers":[{"nameIdentifier":"487916","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hori, Hitoshi"}],"nameIdentifiers":[{"nameIdentifier":"487917","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsumoto, Kenichiro"}],"nameIdentifiers":[{"nameIdentifier":"487918","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuhara, Kiyoshi"}],"nameIdentifiers":[{"nameIdentifier":"487919","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ikota, Nobuo"}],"nameIdentifiers":[{"nameIdentifier":"487920","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukuzumi, Shunichi"}],"nameIdentifiers":[{"nameIdentifier":"487921","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ozawa, Toshihiko"}],"nameIdentifiers":[{"nameIdentifier":"487922","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Anzai, Kazunori"}],"nameIdentifiers":[{"nameIdentifier":"487923","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakanishi, Ikuo"}],"nameIdentifiers":[{"nameIdentifier":"487924","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"川島 知憲","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"487925","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ｍａｎｄａ Ｓｕｓｈｍａ","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"487926","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"松本 謙一郎","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"487927","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中西 郁夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"487928","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Kinetics and Mechanism for the Scavenging Reaction of the 2,2-Diphenyl-1-picrylhydrazyl Radical by Synthetic Artepillin C Analogues","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Kinetics and Mechanism for the Scavenging Reaction of the 2,2-Diphenyl-1-picrylhydrazyl Radical by Synthetic Artepillin C Analogues"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-02-20"},"publish_date":"2018-02-20","publish_status":"0","recid":"48534","relation_version_is_last":true,"title":["Kinetics and Mechanism for the Scavenging Reaction of the 2,2-Diphenyl-1-picrylhydrazyl Radical by Synthetic Artepillin C Analogues"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:27:02.830107+00:00"}