{"id":"https://openalex.org/W2004384060","doi":"https://doi.org/10.1246/cl.1981.343","title":"[7],[9],[11],[13], AND [15]HETEROHELICENES ANNELATED WITH ALTERNANT THIOPHENE AND BENZENE RINGS. SYNTHESES AND NMR STUDIES","display_name":"[7],[9],[11],[13], AND [15]HETEROHELICENES ANNELATED WITH ALTERNANT THIOPHENE AND BENZENE RINGS. SYNTHESES AND NMR STUDIES","publication_year":1981,"publication_date":"1981-03-01","ids":{"openalex":"https://openalex.org/W2004384060","doi":"https://doi.org/10.1246/cl.1981.343","mag":"2004384060"},"language":"en","primary_location":{"id":"doi:10.1246/cl.1981.343","doi":"https://doi.org/10.1246/cl.1981.343","is_oa":false,"landing_page_url":"https://doi.org/10.1246/cl.1981.343","pdf_url":null,"source":{"id":"https://openalex.org/S90825563","display_name":"Chemistry Letters","issn_l":"0366-7022","issn":["0366-7022","1348-0715"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Chemistry Letters","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102049877","display_name":"Koh\u2010ichi Yamada","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201389808","display_name":"Josai University","ror":"https://ror.org/021r6aq66","country_code":"JP","type":"education","lineage":["https://openalex.org/I201389808"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Koh-ichi Yamada","raw_affiliation_strings":["Faculty of Pharmaceutical Sciences, Josai University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Pharmaceutical Sciences, Josai University","institution_ids":["https://openalex.org/I201389808"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084077457","display_name":"Susumu Ogashiwa","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201389808","display_name":"Josai University","ror":"https://ror.org/021r6aq66","country_code":"JP","type":"education","lineage":["https://openalex.org/I201389808"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Susumu Ogashiwa","raw_affiliation_strings":["Faculty of Pharmaceutical Sciences, Josai University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Pharmaceutical Sciences, Josai University","institution_ids":["https://openalex.org/I201389808"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5114514535","display_name":"Hisao Tanaka","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201389808","display_name":"Josai University","ror":"https://ror.org/021r6aq66","country_code":"JP","type":"education","lineage":["https://openalex.org/I201389808"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hisao Tanaka","raw_affiliation_strings":["Faculty of Pharmaceutical Sciences, Josai University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Pharmaceutical Sciences, Josai University","institution_ids":["https://openalex.org/I201389808"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111553999","display_name":"Hiroko Nakagawa","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201389808","display_name":"Josai University","ror":"https://ror.org/021r6aq66","country_code":"JP","type":"education","lineage":["https://openalex.org/I201389808"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroko Nakagawa","raw_affiliation_strings":["Faculty of Pharmaceutical Sciences, Josai University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Pharmaceutical Sciences, Josai University","institution_ids":["https://openalex.org/I201389808"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5032625711","display_name":"Hiroshi Kawazura","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201389808","display_name":"Josai University","ror":"https://ror.org/021r6aq66","country_code":"JP","type":"education","lineage":["https://openalex.org/I201389808"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroshi Kawazura","raw_affiliation_strings":["Faculty of Pharmaceutical Sciences, Josai University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Pharmaceutical Sciences, Josai University","institution_ids":["https://openalex.org/I201389808"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I201389808"],"apc_list":{"value":150000,"currency":"JPY","value_usd":1003},"apc_paid":null,"fwci":1.5739,"has_fulltext":false,"cited_by_count":38,"citation_normalized_percentile":{"value":0.73653911,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"10","issue":"3","first_page":"343","last_page":"346"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11298","display_name":"Synthesis and Properties of Aromatic Compounds","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11298","display_name":"Synthesis and Properties of Aromatic Compounds","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10578","display_name":"Supramolecular Chemistry and Complexes","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10903","display_name":"Porphyrin and Phthalocyanine Chemistry","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/heterohelicenes","display_name":"heterohelicenes","score":0.9900000095367432},{"id":"https://openalex.org/keywords/benzene-ring","display_name":"benzene ring","score":0.5960000157356262},{"id":"https://openalex.org/keywords/nmr-spectra","display_name":"NMR spectra","score":0.7480000257492065},{"id":"https://openalex.org/keywords/heterocycle-synthesis","display_name":"heterocyclic synthesis","score":0.6230000257492065},{"id":"https://openalex.org/keywords/polycyclic-aromatic-compounds","display_name":"polycyclic aromatic compounds","score":0.5210000276565552}],"concepts":[{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.9637691378593445},{"id":"https://openalex.org/C2779953032","wikidata":"https://www.wikidata.org/wiki/Q305364","display_name":"Thiophene","level":2,"score":0.7479091882705688},{"id":"https://openalex.org/C2777691172","wikidata":"https://www.wikidata.org/wiki/Q2270","display_name":"Benzene","level":2,"score":0.6638671159744263},{"id":"https://openalex.org/C147597530","wikidata":"https://www.wikidata.org/wiki/Q369472","display_name":"Computational chemistry","level":1,"score":0.4498075246810913},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.42782971262931824},{"id":"https://openalex.org/C71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","level":1,"score":0.32783764600753784}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1246/cl.1981.343","doi":"https://doi.org/10.1246/cl.1981.343","is_oa":false,"landing_page_url":"https://doi.org/10.1246/cl.1981.343","pdf_url":null,"source":{"id":"https://openalex.org/S90825563","display_name":"Chemistry Letters","issn_l":"0366-7022","issn":["0366-7022","1348-0715"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Chemistry Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1508114456","https://openalex.org/W1992807573","https://openalex.org/W1998105690","https://openalex.org/W2013726323","https://openalex.org/W2041574837","https://openalex.org/W2112377140","https://openalex.org/W2182281458","https://openalex.org/W4211185038"],"related_works":["https://openalex.org/W2951315625","https://openalex.org/W1970063133","https://openalex.org/W2090635857","https://openalex.org/W2951880568","https://openalex.org/W2182281458","https://openalex.org/W2076701708","https://openalex.org/W2620601088","https://openalex.org/W7017655583","https://openalex.org/W2305344245","https://openalex.org/W1481846271"],"abstract_inverted_index":{"Abstract":[0],"Syntheses":[1],"of":[2,19],"the":[3,13,17],"title":[4],"heterohelicenes":[5],"are":[6],"described":[7],"and":[8],"their":[9],"NMR":[10],"spectra":[11],"showed":[12],"conspicuous":[14],"phenomena":[15],"reflecting":[16],"overlapping":[18],"aromatic":[20],"rings.":[21]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2016-06-24T00:00:00"}