Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2528370535', 'doi': 'https://doi.org/10.1016/j.tetlet.2016.10.009', 'title': 'Ochrocephalamine A, a new quinolizidine alkaloid from Oxytropis ochrocephala Bunge', 'display_name': 'Ochrocephalamine A, a new quinolizidine alkaloid from Oxytropis ochrocephala Bunge', 'publication_year': 2016, 'publication_date': '2016-10-08', 'ids': {'openalex': 'https://openalex.org/W2528370535', 'doi': 'https://doi.org/10.1016/j.tetlet.2016.10.009', 'mag': '2528370535', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/28066032', 'pmcid': 'https://www.ncbi.nlm.nih.gov/pmc/articles/5207778'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/j.tetlet.2016.10.009', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S133942674', 'display_name': 'Tetrahedron Letters', 'issn_l': '0040-4039', 'issn': ['0040-4039', '1873-3581'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://europepmc.org/articles/pmc5207778?pdf=render', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5113786261', 'display_name': 'Li-Na Liu', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210095439', 'display_name': 'Guizhou Minzu University', 'ror': 'https://ror.org/00qm4t918', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210095439']}, {'id': 'https://openalex.org/I149137203', 'display_name': 'Guiyang Medical University', 'ror': 'https://ror.org/035y7a716', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I149137203']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Li-Na Liu', 'raw_affiliation_strings': ['Department of Biotechnology, Guizhou Medical University, Guiyang 550025, China', 'School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China'], 'affiliations': [{'raw_affiliation_string': 'School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China', 'institution_ids': ['https://openalex.org/I4210095439']}, {'raw_affiliation_string': 'Department of Biotechnology, Guizhou Medical University, Guiyang 550025, China', 'institution_ids': ['https://openalex.org/I149137203']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109340367', 'display_name': 'Jian-Qiang Ran', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210095439', 'display_name': 'Guizhou Minzu University', 'ror': 'https://ror.org/00qm4t918', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210095439']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Jian-Qiang Ran', 'raw_affiliation_strings': ['School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China'], 'affiliations': [{'raw_affiliation_string': 'School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China', 'institution_ids': ['https://openalex.org/I4210095439']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109340368', 'display_name': 'Li-Jun Li', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210095439', 'display_name': 'Guizhou Minzu University', 'ror': 'https://ror.org/00qm4t918', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210095439']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Li-Jun Li', 'raw_affiliation_strings': ['School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China'], 'affiliations': [{'raw_affiliation_string': 'School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China', 'institution_ids': ['https://openalex.org/I4210095439']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5043170409', 'display_name': 'Yu Zhao', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I114027177', 'display_name': 'University of North Carolina at Chapel Hill', 'ror': 'https://ror.org/0130frc33', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I114027177']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Yu Zhao', 'raw_affiliation_strings': ['Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States'], 'affiliations': [{'raw_affiliation_string': 'Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States', 'institution_ids': ['https://openalex.org/I114027177']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5046646454', 'display_name': 'Masuo Goto', 'orcid': 'https://orcid.org/0000-0002-9659-1460'}, 'institutions': [{'id': 'https://openalex.org/I114027177', 'display_name': 'University of North Carolina at Chapel Hill', 'ror': 'https://ror.org/0130frc33', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I114027177']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Masuo Goto', 'raw_affiliation_strings': ['Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States'], 'affiliations': [{'raw_affiliation_string': 'Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States', 'institution_ids': ['https://openalex.org/I114027177']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5043836895', 'display_name': 'Susan L. Morris‐Natschke', 'orcid': 'https://orcid.org/0000-0003-3772-0063'}, 'institutions': [{'id': 'https://openalex.org/I114027177', 'display_name': 'University of North Carolina at Chapel Hill', 'ror': 'https://ror.org/0130frc33', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I114027177']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Susan L. Morris-Natschke', 'raw_affiliation_strings': ['Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States'], 'affiliations': [{'raw_affiliation_string': 'Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States', 'institution_ids': ['https://openalex.org/I114027177']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5005512198', 'display_name': 'Kuo‐Hsiung Lee', 'orcid': 'https://orcid.org/0000-0002-6562-0070'}, 'institutions': [{'id': 'https://openalex.org/I4210126829', 'display_name': 'China Medical University Hospital', 'ror': 'https://ror.org/0368s4g32', 'country_code': 'TW', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210126829']}, {'id': 'https://openalex.org/I184693016', 'display_name': 'China Medical University', 'ror': 'https://ror.org/00v408z34', 'country_code': 'TW', 'type': 'education', 'lineage': ['https://openalex.org/I184693016']}, {'id': 'https://openalex.org/I114027177', 'display_name': 'University of North Carolina at Chapel Hill', 'ror': 'https://ror.org/0130frc33', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I114027177']}], 'countries': ['TW', 'US'], 'is_corresponding': True, 'raw_author_name': 'Kuo-Hsiung Lee', 'raw_affiliation_strings': ['Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 401, Taiwan', 'Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States'], 'affiliations': [{'raw_affiliation_string': 'Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 401, Taiwan', 'institution_ids': ['https://openalex.org/I4210126829', 'https://openalex.org/I184693016']}, {'raw_affiliation_string': 'Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States', 'institution_ids': ['https://openalex.org/I114027177']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109031852', 'display_name': 'Bao-Yu Zhao', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I89652312', 'display_name': 'Northwest A&F University', 'ror': 'https://ror.org/0051rme32', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I89652312']}], 'countries': ['CN'], 'is_corresponding': True, 'raw_author_name': 'Bao-Yu Zhao', 'raw_affiliation_strings': ['College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China'], 'affiliations': [{'raw_affiliation_string': 'College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China', 'institution_ids': ['https://openalex.org/I89652312']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5100981835', 'display_name': 'Cheng-Jian Tan', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210095439', 'display_name': 'Guizhou Minzu University', 'ror': 'https://ror.org/00qm4t918', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210095439']}], 'countries': ['CN'], 'is_corresponding': True, 'raw_author_name': 'Cheng-Jian Tan', 'raw_affiliation_strings': ['School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China'], 'affiliations': [{'raw_affiliation_string': 'School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China', 'institution_ids': ['https://openalex.org/I4210095439']}]}], 'institution_assertions': [], 'countries_distinct_count': 3, 'institutions_distinct_count': 6, 'corresponding_author_ids': ['https://openalex.org/A5005512198', 'https://openalex.org/A5109031852', 'https://openalex.org/A5100981835'], 'corresponding_institution_ids': ['https://openalex.org/I4210126829', 'https://openalex.org/I184693016', 'https://openalex.org/I114027177', 'https://openalex.org/I89652312', 'https://openalex.org/I4210095439'], 'apc_list': {'value': 3690, 'currency': 'USD', 'value_usd': 3690, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.84, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 15, 'citation_normalized_percentile': {'value': 0.92564, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 89, 'max': 90}, 'biblio': {'volume': '57', 'issue': '46', 'first_page': '5047', 'last_page': '5049'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T13506', 'display_name': 'Botanical Research and Chemistry', 'score': 0.9992, 'subfield': {'id': 'https://openalex.org/subfields/1105', 'display_name': 'Ecology, Evolution, Behavior and Systematics'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, 'topics': [{'id': 'https://openalex.org/T13506', 'display_name': 'Botanical Research and Chemistry', 'score': 0.9992, 'subfield': {'id': 'https://openalex.org/subfields/1105', 'display_name': 'Ecology, Evolution, Behavior and Systematics'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T12497', 'display_name': 'Traditional and Medicinal Uses of Annonaceae', 'score': 0.9991, 'subfield': {'id': 'https://openalex.org/subfields/1303', 'display_name': 'Biochemistry'}, 'field': {'id': 'https://openalex.org/fields/13', 'display_name': 'Biochemistry, Genetics and Molecular Biology'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T13124', 'display_name': 'Chemical synthesis and alkaloids', 'score': 0.996, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/quinolizidine', 'display_name': 'Quinolizidine', 'score': 0.9808067}], 'concepts': [{'id': 'https://openalex.org/C2778943457', 'wikidata': 'https://www.wikidata.org/wiki/Q418837', 'display_name': 'Quinolizidine', 'level': 3, 'score': 0.9808067}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.90751636}, {'id': 'https://openalex.org/C2777667214', 'wikidata': 'https://www.wikidata.org/wiki/Q70702', 'display_name': 'Alkaloid', 'level': 2, 'score': 0.89500344}, {'id': 'https://openalex.org/C2776545273', 'wikidata': 'https://www.wikidata.org/wiki/Q6787831', 'display_name': 'Matrine', 'level': 2, 'score': 0.88844657}, {'id': 'https://openalex.org/C71240020', 'wikidata': 'https://www.wikidata.org/wiki/Q186011', 'display_name': 'Stereochemistry', 'level': 1, 'score': 0.6390038}, {'id': 'https://openalex.org/C556039675', 'wikidata': 'https://www.wikidata.org/wiki/Q771035', 'display_name': 'Traditional medicine', 'level': 1, 'score': 0.4925788}, {'id': 'https://openalex.org/C2780900450', 'wikidata': 'https://www.wikidata.org/wiki/Q44448', 'display_name': 'Fabaceae', 'level': 2, 'score': 0.47407237}, {'id': 'https://openalex.org/C59822182', 'wikidata': 'https://www.wikidata.org/wiki/Q441', 'display_name': 'Botany', 'level': 1, 'score': 0.31663233}, {'id': 'https://openalex.org/C43617362', 'wikidata': 'https://www.wikidata.org/wiki/Q170050', 'display_name': 'Chromatography', 'level': 1, 'score': 0.053545028}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.0}], 'mesh': [], 'locations_count': 5, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/j.tetlet.2016.10.009', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S133942674', 'display_name': 'Tetrahedron Letters', 'issn_l': '0040-4039', 'issn': ['0040-4039', '1873-3581'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://europepmc.org/articles/pmc5207778', 'pdf_url': 'https://europepmc.org/articles/pmc5207778?pdf=render', 'source': {'id': 'https://openalex.org/S4306400806', 'display_name': 'Europe PMC (PubMed Central)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1303153112', 'host_organization_name': 'European Bioinformatics Institute', 'host_organization_lineage': ['https://openalex.org/I1303153112'], 'host_organization_lineage_names': ['European Bioinformatics Institute'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'acceptedVersion', 'is_accepted': True, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5207778', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764455111', 'display_name': 'PubMed Central', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'acceptedVersion', 'is_accepted': True, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://doi.org/10.17615/xemn-w345', 'pdf_url': 'https://cdr.lib.unc.edu/downloads/qf85nh34b', 'source': {'id': 'https://openalex.org/S4306401075', 'display_name': 'Carolina Digital Repository (University of North Carolina at Chapel Hill)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I114027177', 'host_organization_name': 'University of North Carolina at Chapel Hill', 'host_organization_lineage': ['https://openalex.org/I114027177'], 'host_organization_lineage_names': ['University of North Carolina at Chapel Hill'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/28066032', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://europepmc.org/articles/pmc5207778', 'pdf_url': 'https://europepmc.org/articles/pmc5207778?pdf=render', 'source': {'id': 'https://openalex.org/S4306400806', 'display_name': 'Europe PMC (PubMed Central)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1303153112', 'host_organization_name': 'European Bioinformatics Institute', 'host_organization_lineage': ['https://openalex.org/I1303153112'], 'host_organization_lineage_names': ['European Bioinformatics Institute'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'acceptedVersion', 'is_accepted': True, 'is_published': False}, 'sustainable_development_goals': [], 'grants': [{'funder': 'https://openalex.org/F4320321001', 'funder_display_name': 'National Natural Science Foundation of China', 'award_id': '31360084'}, {'funder': 'https://openalex.org/F4320321001', 'funder_display_name': 'National Natural Science Foundation of China', 'award_id': '31660103'}, {'funder': 'https://openalex.org/F4320332161', 'funder_display_name': 'National Institutes of Health', 'award_id': 'CA177584'}], 'datasets': ['https://openalex.org/W4397354613'], 'versions': [], 'referenced_works_count': 13, 'referenced_works': ['https://openalex.org/W1213817220', 'https://openalex.org/W1591492006', 'https://openalex.org/W1976231259', 'https://openalex.org/W1976748127', 'https://openalex.org/W1991559341', 'https://openalex.org/W2005924747', 'https://openalex.org/W2012959468', 'https://openalex.org/W2014085472', 'https://openalex.org/W2042223729', 'https://openalex.org/W2075144856', 'https://openalex.org/W2156779445', 'https://openalex.org/W2279958553', 'https://openalex.org/W3144071887'], 'related_works': ['https://openalex.org/W85964848', 'https://openalex.org/W4207068006', 'https://openalex.org/W2351267548', 'https://openalex.org/W2259935714', 'https://openalex.org/W2067007969', 'https://openalex.org/W2046060267', 'https://openalex.org/W2041369350', 'https://openalex.org/W2038369507', 'https://openalex.org/W1997406264', 'https://openalex.org/W1984949378'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2528370535', 'counts_by_year': [{'year': 2024, 'cited_by_count': 4}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 2}, {'year': 2020, 'cited_by_count': 2}, {'year': 2019, 'cited_by_count': 3}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 1}], 'updated_date': '2025-01-12T17:30:31.995379', 'created_date': '2016-10-14'}