{"created":"2023-05-15T16:45:06.916605+00:00","id":21024,"links":{},"metadata":{"_buckets":{"deposit":"56354d90-4317-4d12-8a68-b9fd7fee8f10"},"_deposit":{"created_by":2,"id":"21024","owners":[2],"pid":{"revision_id":0,"type":"depid","value":"21024"},"status":"published"},"_oai":{"id":"oai:nagasaki-u.repo.nii.ac.jp:00021024","sets":["73:74"]},"author_link":["88531","88530","88533","88532"],"item_2_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"12","bibliographicPageEnd":"1772","bibliographicPageStart":"1768","bibliographicVolumeNumber":"55","bibliographic_titles":[{"bibliographic_title":"Chemical & Pharmaceutical Bulletin"}]}]},"item_2_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"During black tea production, catechins and their galloyl esters are enzymatically oxidized to generate a complex mixture of black tea polyphenols. The role of galloyl ester groups in this process has yet to be determined. Enzymatic oxidation of epicatechin 3-O-gallate (1) yielded two new oxidation products, theaflavate C and bistheaflavate A, along with theaflavate A (2), a known dimer of 1 generated by coupling of the B-ring with the galloyl group. Theaflavate C is a trimer of 1 and possesses two benzotropolone moieties generated by the oxidative coupling of the galloyl groups with the catechol B-rings. Bistheaflavate A was found to be a tetramer produced by intermolecular coupling of two benzotropolone moieties of 2. From the structures of the products, it was deduced that oxidative coupling of galloyl groups resulted in extension of the molecular size of the products in catechin oxidation.","subitem_description_type":"Abstract"}]},"item_2_description_63":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"Chemical & Pharmaceutical Bulletin v.55(12) p.1768-1772, 2007","subitem_description_type":"Other"}]},"item_2_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Pharmaceutical Society of Japan"}]},"item_2_relation_11":{"attribute_name":"PubMed番号","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"18057757","subitem_relation_type_select":"PMID"}}]},"item_2_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1248/cpb.55.1768","subitem_relation_type_select":"DOI"}}]},"item_2_relation_42":{"attribute_name":"関係URI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"http://dx.doi.org/10.1248/cpb.55.1768"}]}]},"item_2_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA10885497","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00092363","subitem_source_identifier_type":"ISSN"}]},"item_2_source_id_8":{"attribute_name":"EISSN","attribute_value_mlt":[{"subitem_source_identifier":"1347-5223","subitem_source_identifier_type":"ISSN"}]},"item_2_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kusano, Rie"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tanaka, Takashi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Matsuo, Yosuke"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kouno, Isao"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-23"}],"displaytype":"detail","filename":"CPBul55_1768.pdf","filesize":[{"value":"137.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"CPBul55_1768.pdf","url":"https://nagasaki-u.repo.nii.ac.jp/record/21024/files/CPBul55_1768.pdf"},"version_id":"bc5865cb-64f4-4f1c-97d3-391ded60814b"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"epicatechin 3-O-gallate","subitem_subject_scheme":"Other"},{"subitem_subject":"benzotropolone","subitem_subject_scheme":"Other"},{"subitem_subject":"oxidation","subitem_subject_scheme":"Other"},{"subitem_subject":"black tea","subitem_subject_scheme":"Other"},{"subitem_subject":"polyphenol","subitem_subject_scheme":"Other"}]},"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":"Structures of Epicatechin Gallate Trimer and Tetramer Produced by Enzymatic Oxidation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Structures of Epicatechin Gallate Trimer and Tetramer Produced by Enzymatic Oxidation"}]},"item_type_id":"2","owner":"2","path":["74"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-03-04"},"publish_date":"2008-03-04","publish_status":"0","recid":"21024","relation_version_is_last":true,"title":["Structures of Epicatechin Gallate Trimer and Tetramer Produced by Enzymatic Oxidation"],"weko_creator_id":"2","weko_shared_id":-1},"updated":"2023-05-16T02:12:41.579181+00:00"}