{"created":"2023-05-15T16:34:43.953005+00:00","id":7451,"links":{},"metadata":{"_buckets":{"deposit":"fc38a509-b6f8-42ba-b6cf-f83f29f07eb8"},"_deposit":{"created_by":2,"id":"7451","owners":[2],"pid":{"revision_id":0,"type":"depid","value":"7451"},"status":"published"},"_oai":{"id":"oai:nagasaki-u.repo.nii.ac.jp:00007451","sets":["18:105:369:537"]},"author_link":["31281","31275","31277","31279","31282","31278","31276","31280"],"item_3_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Sterols in Recent Marine Sediments II GC/MS Analysis of 4-Desmethyl-Sterols"}]},"item_3_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1991-05-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"47","bibliographicPageStart":"27","bibliographicVolumeNumber":"45","bibliographic_titles":[{"bibliographic_title":"長崎大学教育学部自然科学研究報告"},{"bibliographic_title":"Science bulletin of the Faculty of Education, Nagasaki University","bibliographic_titleLang":"en"}]}]},"item_3_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In the course of a gas chromatographi-mass spectrometric (GC/MS) study of sterols from marine sediments, we previously identified the major sterols: 5a-stanols, △5_, △22_ and △5, 22_ sterols (Kondo et al., 1991). The present paper reports successively the identification of 19 different 4-desmethyl-sterols which are classified into 7 groups, including 5β-stanols △5, 24_, △7_, △5, 24(28)_ and △24(28)_ sterols. The mass spectra data of these sterol trimethylsilyl ether derivatives are presented in Table 2 and Fig.s 8-11. 5β-Stanols have shorter GC retention times (RRT) than the corresponding 5a-stanols. These derivatives give intense peaks of b[M-90]+ and have molecular ions [M]+ of low density. 3β-Epimer has a shorter RRT and a stronger peak at m/z108 than 3a-epimer. △5,24-Sterols present strong ions d , b, r and s at m/z372, 366, 343 and 253 respectively. They also have ions n[M-129] m/z129 which are intense in the case of △5-sterols. △7-Sterols are characterized, as having longer RRT than the corresponding △5-sterols, and by the base peaks at em/z255, and by the intense molecular ions [M]+. Thepresence of a △24(28) double bond in the sterol side chain brings about intense fragment ions p [M-C23～C26(23)-H]+ and q [M-C23～C26(23)-H-ROH], etc. corresponding to the cleavage of the 23-24 double bond due to the Mclafferty-type rearrangement. In the case of △5,24(28)-sterols, the characteristic ions p at m/z386 and q at m/z296 are accompanied by ions n[M-129]+, m/z145, 129 all of which are typical of △5-sterols. △24(28)-Sterols have characteristic ions p at m/z388 and g at m/z215 which are strong in the 5a-saturated sterols.","subitem_description_type":"Abstract"}]},"item_3_description_64":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"長崎大学教育学部自然科学研究報告. vol.45, p.27-47; 1991","subitem_description_type":"Other"}]},"item_3_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"31279","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kondo, Hiroshi"}]},{"nameIdentifiers":[{"nameIdentifier":"31280","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ishiwatari, Ryoshi"}]},{"nameIdentifiers":[{"nameIdentifier":"31281","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yamamoto, Shuichi"}]},{"nameIdentifiers":[{"nameIdentifier":"31282","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Uemura, Hitoshi"}]}]},"item_3_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"長崎大学教育学部"}]},"item_3_relation_29":{"attribute_name":"論文ID（NAID）","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"40002768845","subitem_relation_type_select":"NAID"}}]},"item_3_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00178280","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0386443X","subitem_source_identifier_type":"ISSN"}]},"item_3_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":"近藤, 寛"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"石渡, 良志"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山本, 修一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"上村, 仁"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-21"}],"displaytype":"detail","filename":"kyoikuS45_027.pdf","filesize":[{"value":"1.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"kyoikuS45_027.pdf","url":"https://nagasaki-u.repo.nii.ac.jp/record/7451/files/kyoikuS45_027.pdf"},"version_id":"32310d19-dc8e-4163-bfc8-5aa43f327257"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"現世海洋堆積物中のステロ-ル-2 : 4-デスメチルステロールのGC/MSによる解析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"現世海洋堆積物中のステロ-ル-2 : 4-デスメチルステロールのGC/MSによる解析"}]},"item_type_id":"3","owner":"2","path":["537"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-06-17"},"publish_date":"2013-06-17","publish_status":"0","recid":"7451","relation_version_is_last":true,"title":["現世海洋堆積物中のステロ-ル-2 : 4-デスメチルステロールのGC/MSによる解析"],"weko_creator_id":"2","weko_shared_id":-1},"updated":"2023-05-16T02:24:11.165580+00:00"}