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Gitirana de Santana JD, Santos-Mayorga OA, Florencio JR, Oliveira MCCD, Almeida LMSD, Xavier JODL, Zimmermann-Franco DC, Macedo GC, Ferreira ALP, Sousa OVD, da Silva Filho AA, Alves MS. Vernonia polyanthes Less. (Asteraceae Bercht. & Presl), a Natural Source of Bioactive Compounds with Antibiotic Effect against Multidrug-Resistant Staphylococcus aureus. Antibiotics (Basel) 2023; 12:antibiotics12030622. [PMID: 36978489 PMCID: PMC10045157 DOI: 10.3390/antibiotics12030622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Vernonia polyanthes is a medicinal plant used to treat many disorders, including infectious diseases. This study investigated the chemical constituents and the antibacterial activity of V. polyanthes leaf rinse extract (Vp-LRE). The chemical characterization of Vp-LRE was established using ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UHPLC/Q-TOF-MS), and glaucolide A was identified through 1H and 13C nuclear magnetic resonance (NMR) and mass fragmentation. The cytotoxicity was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT). The antibacterial activity was assessed by minimal inhibitory concentration and minimal bactericidal concentration. Interactions between ligands and beta-lactamase were evaluated via molecular docking. UHPLC/Q-TOF-MS detected acacetin, apigenin, chrysoeriol, isorhamnetin, isorhamnetin isomer, kaempferide, 3',4'-dimethoxyluteolin, 3,7-dimethoxy-5,3',4'-trihydroxyflavone, piptocarphin A and glaucolide A. Vp-LRE (30 µg/mL) and glaucolide A (10 and 20 μg/mL) were cytotoxic against RAW 264.7 cells. Glaucolide A was not active, but Vp-LRE inhibited the Staphylococcus aureus, methicillin-resistant S. aureus (MRSA), Escherichia coli, Salmonella Choleraesuis and Typhimurium, with a bacteriostatic effect. The compounds (glaucolide A, 3',4'-dimethoxyluteolin, acacetin and apigenin) were able to interact with beta-lactamase, mainly through hydrogen bonding, with free energy between -6.2 to -7.5 kcal/mol. These results indicate that V. polyanthes is a potential natural source of phytochemicals with a significant antibiotic effect against MRSA strains.
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Affiliation(s)
- Jordana Damasceno Gitirana de Santana
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Oscar Alejandro Santos-Mayorga
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Jônatas Rodrigues Florencio
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Mirella Chrispim Cerqueira de Oliveira
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Luísa Maria Silveira de Almeida
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Julianna Oliveira de Lucas Xavier
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Danielle Cristina Zimmermann-Franco
- Centro de Tecnologia Celular e Imunologia Aplicada (IMUNOCET), Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Gilson Costa Macedo
- Centro de Tecnologia Celular e Imunologia Aplicada (IMUNOCET), Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Adriana Lúcia Pires Ferreira
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco 255, Cidade Universitária, Ilha do Fundão, Rio de Janeiro 21941-913, RJ, Brazil
| | - Orlando Vieira de Sousa
- Departamento de Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Ademar Alves da Silva Filho
- Departamento de Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
| | - Maria Silvana Alves
- Departamento de Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer s/n, Campus Universitário, Bairro São Pedro, Juiz de Fora 36036-900, MG, Brazil
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2
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Wang Z, Lamine W, Miqueu K, Liu SY. A syn outer-sphere oxidative addition: the reaction mechanism in Pd/Senphos-catalyzed carboboration of 1,3-enynes. Chem Sci 2023; 14:2082-2090. [PMID: 36845936 PMCID: PMC9945512 DOI: 10.1039/d2sc05828f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023] Open
Abstract
We report a combined experimental and computational study of Pd/Senphos-catalyzed carboboration of 1,3-enynes utilizing DFT calculations, 31P NMR study, kinetic study, Hammett analysis and Arrhenius/Eyring analysis. Our mechanistic study provides evidence against the conventional inner-sphere β-migratory insertion mechanism. Instead, a syn outer-sphere oxidative addition mechanism featuring a Pd-π-allyl intermediate followed by coordination-assisted rearrangements is consistent with all the experimental observations.
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Affiliation(s)
- Ziyong Wang
- Department of Chemistry, Boston College Chestnut Hill Massachusetts 02467-3860 USA
| | - Walid Lamine
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
| | - Karinne Miqueu
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
| | - Shih-Yuan Liu
- Department of Chemistry, Boston College Chestnut Hill Massachusetts 02467-3860 USA
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
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3
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Hu W, Lin Z, Wang C. Synthesis of Multisubstituted Allylic Alcohols via a Nickel-Catalyzed Cross-Electrophile Ring-Opening Reaction. Org Lett 2022; 24:5751-5755. [PMID: 35901221 DOI: 10.1021/acs.orglett.2c02199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we report a nickel-catalyzed cross-electrophile ring-opening reaction of vinyl epoxides wherein aryl iodides, alkyl iodides, and benzyl chlorides can all serve as the electrophilic coupling partners, providing a new approach to preparing multisubstituted allylic alcohols. This new method features broad substrate scope (76 examples), good step-economy, and high L/B- and E/Z selectivity as well as mild reaction conditions.
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Affiliation(s)
- Weitao Hu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
| | - Zhiyang Lin
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
| | - Chuan Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, P.R. China
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4
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Liu J, Liu D, Nie W, Yu H, Shi J. A mechanistic study on the regioselective Ni-catalyzed methylation–alkenylation of alkyne with AlMe 3 and allylic alcohol. Org Chem Front 2022. [DOI: 10.1039/d1qo01580j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The recently reported Ni-catalyzed methylation–allylation of alkynes with allylic alcohols and AlMe3 reagents delivers valuable tetrasubstituted alkene units in a highly regioselective fashion.
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Affiliation(s)
- Jiao Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Deguang Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wan Nie
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haizhu Yu
- Department of Chemistry, Anhui University, Hefei, Anhui 230026, China
| | - Jing Shi
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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5
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Nickel‐Catalyzed Allylmethylation of Alkynes with Allylic Alcohols and AlMe
3
: Facile Access to Skipped Dienes and Trienes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006322] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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6
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Li W, Yu S, Li J, Zhao Y. Nickel‐Catalyzed Allylmethylation of Alkynes with Allylic Alcohols and AlMe
3
: Facile Access to Skipped Dienes and Trienes. Angew Chem Int Ed Engl 2020; 59:14404-14408. [DOI: 10.1002/anie.202006322] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Wanfang Li
- College of Science University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Shun Yu
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Jincan Li
- College of Science University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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7
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Aliyu AB, Koorbanally NA, Moodley B, Chenia HY. Sesquiterpene lactones from Polydora serratuloides and their quorum sensing inhibitory activity. Nat Prod Res 2020; 35:4517-4523. [PMID: 32162535 DOI: 10.1080/14786419.2020.1739037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The leaves of Polydora serratuloides, with the synonym Vernonia perrottetii are widely used as purgative agents for gastrointestinal problems, and other members of Vernonieae have been used in African traditional medicine for decades. A new sesquiterpene lactone of the keto-hirsutinolide type, 13-acetoxy-1(4β),5(6)β-diepoxy-8α-(senecioyloxy)-3-oxo-1,7(11)-germacradiene-12,6-olide 1, was isolated from the hexane extract of its leaves, in addition to the known 13-acetoxy-1,4β-epoxy-8α-(senecioyloxy)-3-oxo-1,5,7(11)-germacratriene-12,6-olide 2. Three common flavonoids (apigenin 3, luteolin 4 and velutin 5) were also isolated. The antibacterial and quorum sensing inhibitory activities of compounds 1 and 2 and crudes extracts showed limited activity on Bacillus subtilis and Staphylococcus aureus, with no activity on Gram negative bacteria. However, quorum sensing (QSI) experiments indicated that 1 and 2, and the four crude extracts had interesting inhibitory activity on the biosensor organism, Chromobacterium violaceum ATCC 12472 in the range of 0.33-5.25 mg mL-1, with compound 1 being the most effective at 0.33 mg mL-1.
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Affiliation(s)
- Abubakar Babando Aliyu
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.,Faculty of Physical Sciences, Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
| | | | - Brenda Moodley
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
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8
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Shi L, He Y, Gong J, Yang Z. Pd‐Catalyzed Decarboxylative Allylation for Stereoselective Syntheses of Allylic Alcohols bearing a Quaternary Carbon Center. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900208] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Linlin Shi
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
| | - Yingdong He
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
| | - Jianxian Gong
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education Beijing National Laboratory for Molecular Science College of Chemistry and Molecular Engineering, and Peking-Tsing hua Center for Life SciencesPeking University Beijing 100871 China
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9
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Zhang J, Liang Z, Wang J, Guo Z, Liu C, Xie M. Metal-Free Synthesis of Functionalized Tetrasubstituted Alkenes by Three-Component Reaction of Alkynes, Iodine, and Sodium Sulfinates. ACS OMEGA 2018; 3:18002-18015. [PMID: 31458390 PMCID: PMC6643681 DOI: 10.1021/acsomega.8b02966] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/03/2018] [Indexed: 05/15/2023]
Abstract
An operationally simple, efficient, and metal-/peroxide-free three-component reaction of alkynes, iodine, and sodium sulfinates has been developed for the construction of highly functionalized tetrasubstituted alkenes. Iodo- and sulfonyl-containing tetrasubstituted alkenes, such as vinyl ketones, allylic alcohols, and conjugated enynes, could be obtained regio- and stereoselectively in up to 96% yield.
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10
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Xiao F, Wang D, Yuan S, Huang H, Deng GJ. Iodine-promoted stereoselective amidosulfenylation of electron-deficient alkynes. RSC Adv 2018; 8:23319-23322. [PMID: 35540165 PMCID: PMC9081554 DOI: 10.1039/c8ra04374d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/19/2018] [Indexed: 01/07/2023] Open
Abstract
Iodine-promoted three-component synthesis of substituted β-amino sulfides has been developed starting from propargyl ester, aliphatic secondary amine, and disulfide.
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Affiliation(s)
- Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Dahan Wang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Shanshan Yuan
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Huawen Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
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11
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Valkute TR, Aratikatla EK, Gupta NA, Ganga S, Santra MK, Bhattacharya AK. Synthesis and anticancer studies of Michael adducts and Heck arylation products of sesquiterpene lactones, zaluzanin D and zaluzanin C from Vernonia arborea. RSC Adv 2018; 8:38289-38304. [PMID: 35559081 PMCID: PMC9089800 DOI: 10.1039/c8ra06238b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/03/2018] [Indexed: 11/13/2022] Open
Abstract
Sesquiterpene lactones containing α-methylene-γ-lactones, zaluzanin D 1 and zaluzanin C 2 were isolated from the leaves of Vernonia arborea. Several diverse Michael adducts (3–22) and Heck arylation analogs (23–34) of 1 have been synthesized by reacting with various amines and aryl iodides, respectively and were assayed for their in vitro anticancer activities against human breast cancer cell lines MCF7 and MDA-MB-231. Among all the synthesized analogs, Michael adducts 9 and 10 showed better anticancer activities as compared to 1. However, among these compounds, only 10 has minimal cytotoxic effect on normal breast epithelial MCF10A cells. Our detailed mechanistic studies reveal that compounds 9 and 10 execute their antiproliferative activity through induction of apoptosis and thereby inhibit the cancer cells proliferation and compound 10 could be a lead compound for designing potential anti-cancer compound. Sesquiterpene lactones containing α-methylene-γ-lactones, zaluzanin D 1 and zaluzanin C 2 were isolated from the leaves of Vernonia arborea.![]()
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Affiliation(s)
- Tushar R. Valkute
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-41108
- India
| | - Eswar K. Aratikatla
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-41108
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Neha A. Gupta
- Biology of Cancer and Chronic Diseases
- National Centre for Cell Sciences
- Pune-411 007
- India
| | - S. Ganga
- Biology of Cancer and Chronic Diseases
- National Centre for Cell Sciences
- Pune-411 007
- India
| | - Manas K. Santra
- Biology of Cancer and Chronic Diseases
- National Centre for Cell Sciences
- Pune-411 007
- India
| | - Asish K. Bhattacharya
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-41108
- India
- Academy of Scientific and Innovative Research (AcSIR)
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12
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Hovenkotter K, Braunstein H, Langevin S, Beng TK. Expedient and modular access to 2-azabicyclic architectures by iron-catalyzed dehydrative coupling of alcohol-bearing allylic lactams. Org Biomol Chem 2017; 15:1217-1221. [DOI: 10.1039/c6ob02652d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-yielding, cost-effective, modular and environmentally benign approach to [5,5]- or [6,5]-2-azabicyclic architectures bearing vicinal stereocenters, by Fe-catalyzed dehydrative coupling of readily affordable alcohol-bearing allylic lactams is presented.
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Affiliation(s)
| | | | - Spencer Langevin
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Timothy K. Beng
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
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13
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Ma GX, Feng W, Sun ZH, Li PF, Zhu NL, Yang JS, Xu XD, Wu HF. New stigmastane type of steroidal glycosides from the roots of Vernonia cumingiana. J Carbohydr Chem 2016. [DOI: 10.1080/07328303.2016.1170137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Guo-Xu Ma
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Wei Feng
- Pharmacology Laboratory of Traditional Chinese Medicine, Hebei University of Chinese Medicine, Shijiazhuang, P. R. China
| | - Zhong-Hao Sun
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Peng-Fei Li
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Nai-Liang Zhu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Jun-Shan Yang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Xu-Dong Xu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
| | - Hai-Feng Wu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P. R. China
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14
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Endo N, Kanaura M, Iwasawa T. Elucidation of reaction process through β-halogen elimination in CuCN-mediated cyanation of (E)-1-bromo-2-iodoalkene. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Xie M, Wang J, Fang K, Wang S, Yan L. Regio- and stereoselective synthesis of (E)-β-halo alkenyl ketones/sulfones via haloallylation of alkynyl ketones/sulfones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.098] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Turak A, Liu Y, Aisa HA. Elemanolide dimers from seeds of Vernonia anthelmintica. Fitoterapia 2015; 104:23-30. [DOI: 10.1016/j.fitote.2015.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
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17
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Aliyu AB, Moodley B, Chenia H, Koorbanally NA. Sesquiterpene lactones from the aerial parts of Vernonia blumeoides growing in Nigeria. PHYTOCHEMISTRY 2015; 111:163-168. [PMID: 25433631 DOI: 10.1016/j.phytochem.2014.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 11/03/2014] [Accepted: 11/06/2014] [Indexed: 06/04/2023]
Abstract
Four eudesmanolide sesquiterpene lactones (1-4) were isolated from the aerial parts of Vernonia blumeoides used in Nigerian ethnomedicine for the treatment of diarrhea and malaria. Compound 1 demonstrated limited but interesting antibacterial activity against Bacillus, Staphylococcus and Streptococcus species. The crystal structure of 1 allowed the absolute configuration of the stereocentres in the molecule to be assigned.
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Affiliation(s)
- Abubakar Babando Aliyu
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa; Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria.
| | - Brenda Moodley
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
| | - Hafizah Chenia
- School of Life Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
| | - Neil A Koorbanally
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
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18
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Saini V, O'Dair M, Sigman MS. Synthesis of highly functionalized tri- and tetrasubstituted alkenes via Pd-catalyzed 1,2-hydrovinylation of terminal 1,3-dienes. J Am Chem Soc 2015; 137:608-11. [PMID: 25555197 PMCID: PMC4308737 DOI: 10.1021/ja511640g] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
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An
efficient method for the construction of Csp2–Csp3 bond in a regio- and stereoselective fashion involving 1,3-terminal
dienes, enol triflates/nonaflates, and sodium formate under Pd(0)-catalysis
is described. The three component assembly allows trapping of a π-allyl
intermediate, after the initial migratory insertion of the diene,
by a hydride source that leads to structurally complex and synthetically
challenging tri- and tetrasubstituted alkene building blocks.
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Affiliation(s)
- Vaneet Saini
- Department of Chemistry, University of Utah , 315 South 1400 East, Salt Lake City, Utah 84112-0085, United States
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19
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Iwasawa T. Synthetic Development of Multi-tunable Halovinyl Scaffolds for Differentially Substituted Olefin Template Strategy. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.1212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tetsuo Iwasawa
- Department of Materials Chemistry, Faculty of Science & Technology, Ryukoku University
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20
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Ide M, Yauchi Y, Shiogai R, Iwasawa T. Regio- and stereoselective synthesis of (E)-1-bromo-2-iodoalkenes through iodobromination of internal alkynes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.075] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Liu S, Tang L, Chen H, Zhao F, Deng GJ. Iron-catalyzed tetrasubstituted alkene formation from alkynes and sodium sulfinates. Org Biomol Chem 2014; 12:6076-9. [DOI: 10.1039/c4ob00816b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Ou S, Cao CR, Jiang M, Liu JT. A Synthetic Approach to Tetrasubstituted Alkenes: Using β-Carbonyl Benzothiazol-2-yl Sulfones as Electrophiles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Toyang NJ, Verpoorte R. A review of the medicinal potentials of plants of the genus Vernonia (Asteraceae). JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:681-723. [PMID: 23395623 DOI: 10.1016/j.jep.2013.01.040] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 01/22/2013] [Accepted: 01/22/2013] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Vernonia genus has about one thousand species and members of the genus are widely used as food and medicine. The aim of this review is to analyze published data on the ethnomedicinal, ethnoveterinary and zoopharmacognostic uses of plants of the Vernonia genus. This will help to identify the state of ethnopharmacological knowledge in regard to this genus and to propose future research priorities. MATERIALS AND METHODS The major scientific databases including SciFinder, Sciencedirect, Medline and Google Scholar were queried for information on Vernonia genus using various keyword combinations. The International Plant Name Index was also used to verify the names of species and authors. RESULTS A total of 109 Vernonia species were reported in the literature to have medicinal properties. One hundred and five (105) plants were linked to the treatment or management of 44 human diseases or health conditions. Plants of the genus also feature in ethnoveterinary and zoopharmacognostic practices. A total of 12 vernonia species were identified to be used in ethnoveterinary medicine while 2 species are used in self medication practices by chimpanzees and gorillas. In vitro and in vivo research studies reporting the validation of the medicinal properties of some species were also reviewed. One hundred and three bioactive compounds isolated from various Vernonia species were also identified. Vernonia amygdalina was identified as the most frequently used member of the Vernonia genus. The Vernolides, a class of sesquiterpene lactone were identified as the most studied compounds from the genus and show interesting bioactivity in antiplasmodial, antileishmanial, antischistosomial, cytotoxicity, antimicrobial and anti-inflammatory assays. CONCLUSION On the basis of results from a combination of in vitro and in vivo efficacy and toxicity studies reported, Vernonia amygdalina holds the most promise for development into a nutraceutical against diabetes and malaria while Vernonia cinerea has potential against cancer and inflammatory conditions. Vernolide A is so far the most promising single agent from a Vernonia species that has potential for development into an anticancer agent. The other Vernonia species and isolated compounds require further studies to ascertain their medicinal potentials.
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Affiliation(s)
- Ngeh J Toyang
- Virgin Botanicals & Biotech Inc. Columbia, MD, USA; Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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24
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Lactone-rich fraction from Vernonia
blumeoides: antitrypanosomal activity and alleviation of the parasite-induced anemia and organ damage. J Nat Med 2013; 67:750-7. [DOI: 10.1007/s11418-012-0737-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
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25
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Xu LW, Chen XH, Shen H, Deng Y, Jiang JX, Jiang K, Lai GQ, Sheng CQ. Substituted Functional Olefins Through Lateral Sequential Lithiation/Silylation/Condensation of Tertiary Aromatic Amides: A Ligand for Phosphane-Free Palladium-Catalyzed Suzuki Coupling Reactions. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101284] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Liu Y, Nugroho AE, Hirasawa Y, Nakata A, Kaneda T, Uchiyama N, Goda Y, Shirota O, Morita H, Aisa HA. Vernodalidimers A and B, novel orthoester elemanolide dimers from seeds of Vernonia anthelmintica. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.10.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Buskuhl H, de Oliveira FL, Blind LZ, de Freitas RA, Barison A, Campos FR, Corilo YE, Eberlin MN, Caramori GF, Biavatti MW. Sesquiterpene lactones from Vernonia scorpioides and their in vitro cytotoxicity. PHYTOCHEMISTRY 2010; 71:1539-1544. [PMID: 20599237 DOI: 10.1016/j.phytochem.2010.06.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 03/05/2010] [Accepted: 06/07/2010] [Indexed: 05/29/2023]
Abstract
Fresh leaves of Vernonia scorpioides are widely used in Brazil to treat a variety of skin disorders. Previous in vivo studies with extracts of this species had also demonstrated a high antitumor potential. This paper reports isolation of four sesquiterpene lactones (hirsutinolides and glaucolides), together with diacetylpiptocarphol, 8-acetyl-13-etoxypiptocarphol, luteolin, apigenin, and ethyl caffeate from fresh leaves and flowers of Vernonia scorpioides. The hypothesis that hirsutinolide 3 is formed during extraction was verified theoretically using Density Functional Theory. The effects of isolated compounds on in vitro tumor cells were investigated, as well as their genotoxicity by means of an in vitro comet assay. The results indicate that glaucolide 2 and hirsutinolide 4 are toxic to HeLa cells. These compounds were genotoxic in vitro, a property that appears to be related to the presence of their epoxy groups, which has been a more reliable indication of toxicity than substitution on C-13 or the presence of alpha,beta-unsaturated keto-groups. These results need to be replicated in vivo in order to ascertain their toxicity.
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Affiliation(s)
- Humberto Buskuhl
- Curso de Farmácia, Centro de Ciências da Saúde, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
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28
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Cao S, Kingston DGI. Biodiversity conservation and drug discovery: Can they be combined? The Suriname and Madagascar experiences. PHARMACEUTICAL BIOLOGY 2009; 47:809-823. [PMID: 20161050 PMCID: PMC2746688 DOI: 10.1080/13880200902988629] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The approach to new drugs through natural products has proved to be the single most successful strategy for the discovery of new drugs, but in recent years its use has been deemphasized by many pharmaceutical companies in favor of approaches based on combinatorial chemistry and genomics, among others.Drug discovery from natural sources requires continued access to plant, marine, and microbial biomass, and so the preservation of tropical rainforests is an important part of our drug discovery program. Sadly, many of the tropical forests of the world are under severe environmental pressure, and deforestation is a serious problem in most tropical countries. One way to combat this loss is to demonstrate their value as potential sources of new pharmaceutical or agrochemical products.As part of an effort to integrate biodiversity conservation and drug discovery with economic development, we initiated an International Cooperative biodiversity Group (ICBG) to discover potential pharmaceuticals from the plant biodiversity of Suriname and Madagascar. The Group, established with funding from agencies of the United States government, involved participants from the USA, Suriname, and Madagascar. The basic approach was to search for bioactive plants in the Suriname and Malagasy flora, and to isolate their bioactive constituents by the best available methods, but the work included capacity building as well as research. Progress on this project will be reported, drawing on results obtained from the isolation of bioactive natural products from Suriname and Madagascar. The benefits of this general approach to biodiversity and drug discovery will also be discussed.
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Affiliation(s)
| | - David G. I. Kingston
- Address for correspondence: David G. I. Kingston, Virginia Polytechnic Institute and State University. Tel: (540) 231-6570. Fax: (540) 231-3255.
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29
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Flynn AB, Ogilvie WW. Stereocontrolled Synthesis of Tetrasubstituted Olefins. Chem Rev 2007; 107:4698-745. [DOI: 10.1021/cr050051k] [Citation(s) in RCA: 467] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Alison B. Flynn
- Department of Chemistry, University of Ottawa, 10 Marie Curie Street, Ottawa, Ontario K1N 6N5, Canada
| | - William W. Ogilvie
- Department of Chemistry, University of Ottawa, 10 Marie Curie Street, Ottawa, Ontario K1N 6N5, Canada
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30
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Williams RB, Norris A, Miller JS, Razafitsalama LJ, Andriantsiferana R, Rasamison VE, Kingston DGI. Two new cytotoxic naphthoquinones from Mendoncia cowanii from the rainforest of Madagascar. PLANTA MEDICA 2006; 72:564-6. [PMID: 16773542 PMCID: PMC2911133 DOI: 10.1055/s-2006-931554] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Bioassay-guided fractionation of the root and stem extracts of Mendoncia cowanii led to the isolation of two new and two known naphthoquinones. The structures of the new compounds, avicequinones D and E (1 and 2), were determined using 1D and 2D NMR spectroscopy and by chemical conversion of compound 1 to 2. The new compounds were active in the A2780 human ovarian cancer cell line with IC50 values of 7.4 - 50 microM, respectively, and 1, 3, and 4 were subsequently found to be weakly active in an assay for inhibition of the kinase Akt.
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Affiliation(s)
- Russell B. Williams
- Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - Andrew Norris
- Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - James S. Miller
- Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, USA
| | | | - Rabodo Andriantsiferana
- Centre National d'Application des Recherches Pharmaceutiques, B.P. 702, Antananarivo 101, Madagascar
| | - Vincent E. Rasamison
- Centre National d'Application des Recherches Pharmaceutiques, B.P. 702, Antananarivo 101, Madagascar
| | - David G. I. Kingston
- Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
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31
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Abstract
This review covers the isolation, structural determination, synthesis and chemical and microbiological transformations of natural sesquiterpenoids. The literature from January to December 2005 is reviewed,and 386 references are cited.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206, La Laguna, Tenerife, Canary Islands, Spain.
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