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Ang S, Liu C, Hong P, Yang L, Hu G, Zheng X, Jin J, Wu R, Wong WL, Zhang K, Gan L, Li D. Hirsutinolide-type sesquiterpenoids with anti-prostate cancer activity from Cyanthillium cinereum. PHYTOCHEMISTRY 2023; 216:113887. [PMID: 37806467 DOI: 10.1016/j.phytochem.2023.113887] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
Four previously undescribed hirsutinolide-type sesquiterpenoids, cyanolides A-D (1-4), along with twelve known analogues (5-16), were isolated from the aerial parts of Cyanthillium cinereum. Their structures were determined by comprehensive analysis of NMR, HRESIMS, and ECD spectra. Compound 1 is a rarely occurring hirsutinolide-type sesquiterpenoid with 1,4-ether ring ruptured and containing a chlorine atom, and compounds 13-16 were reported from this plant for the first time. All compounds were tested for their inhibiting effects on prostate cancer cells. As a result, compounds 1, 3, and 8-14 exhibited significant anti-prostate cancer activity against PC-3 and LNCaP cells with IC50 values ranging from 2.2 ± 0.4 to 8.5 ± 0.7 μM and 3.0 ± 0.7 to 10.5 ± 1.1 μM, respectively. The preliminary structure-activity relationship was discussed. Further investigation showed that compound 1 induced apoptosis in PC-3 cells.
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Affiliation(s)
- Song Ang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China; Guangdong University of Technology, Guangzhou, 510006, China
| | - Chun Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Peng Hong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China
| | - Lei Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China
| | - Gui'e Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China
| | - Jingwei Jin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China
| | - Rihui Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China
| | - Wing-Leung Wong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China; Guangdong University of Technology, Guangzhou, 510006, China
| | - Lishe Gan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China.
| | - Dongli Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China; International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, China; Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, Wuyi University, Jiangmen, 529020, China.
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Zhang M, Yang X, Wei Y, Wall M, Songsak T, Wongwiwatthananukit S, Chang LC. Bioactive Sesquiterpene Lactones Isolated from the Whole Plants of Vernonia cinerea. JOURNAL OF NATURAL PRODUCTS 2019; 82:2124-2131. [PMID: 31411887 DOI: 10.1021/acs.jnatprod.8b01078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Twelve sesquiterpene lactones were isolated from the whole plants of Vernonia cinerea. These included eight new compounds, vercinolides A-H (1-8), along with four known substances (9-12). The structures of the new compounds were determined by 1D and 2D NMR experiments and mass spectrometric methods. The absolute configurations of compounds 1-8 were determined by Mosher experiments and ECD data. Compounds 1-8 are the first examples of a new class of sesquiterpene lactones possessing a rare 4α,10α-ether ring and a 2,14-ether ring. Compounds 1-4, 6, 8, 10, and 12 were evaluated for their cytotoxic and anti-inflammatory activities. Compounds 10 and 12 exhibited inhibitory effects against nitric oxide production in lipopolysaccharide-activated RAW 264.7 mouse macrophage cells with IC50 values of 21 and 23 μM, respectively. Both compounds were inactive for HeLa cells (IC50 > 10 μM).
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Affiliation(s)
- Mengke Zhang
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawai'i at Hilo , Hilo , Hawaii 96720 , United States
- Department of Pharmacy , Renmin Hospital of Wuhan University , Wuhan 430060 , People's Republic of China
| | - Xi Yang
- Department of Biological Sciences , Clemson University , Clemson , South Carolina 29634 , United States
| | - Yanzhang Wei
- Department of Biological Sciences , Clemson University , Clemson , South Carolina 29634 , United States
| | - Marisa Wall
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center , USDA-ARS, Hilo , Hawaii 96720 , United States
| | - Thanapat Songsak
- Department of Pharmacognosy, Faculty of Pharmacy , Rangsit University , Pathum Thani 12000 , Thailand
| | - Supakit Wongwiwatthananukit
- Department of Pharmacy Practice, Daniel K. Inouye College of Pharmacy , University of Hawai'i at Hilo , Hilo , Hawaii 96720 , United States
| | - Leng Chee Chang
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawai'i at Hilo , Hilo , Hawaii 96720 , United States
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Flores-Guzmán F, Alvarado-Sansininea JJ, López-Muñoz H, Escobar ML, Espinosa-Trejo M, Tavera-Hernandez R, Jiménez-Estrada M, Sánchez-Sánchez L. Antiproliferative, cytotoxic and apoptotic activity of the bentonite transformation of sesquiterpene lactone glaucolide B to 5β-hydroxy-hirsutinolide on tumor cell lines. Eur J Pharmacol 2019; 856:172406. [PMID: 31136759 DOI: 10.1016/j.ejphar.2019.172406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 05/13/2019] [Accepted: 05/22/2019] [Indexed: 11/30/2022]
Abstract
Numerous chemical compounds isolated from medicinal plants have anti-tumor properties, the effects of which on human cancer cells are currently under study. Here, the chemical transformation of glaucolide B were performed to produce a hirsutinolide. The antiproliferative and cytotoxic activity of 5β-hydroxy-hirsutinolide and its ability to induce apoptosis in tumor and non-tumor cells (lymphocyte cultures and the normal HaCaT cell line) (1a) are reported. We ascertained that compound 1a exerts an inhibitory effect on the proliferation of SK-Lu-1, MDA-MB-231 and CaSki cells in a dose-dependent manner at IC50 values of 15, 18 and 30 μg/ml, respectively. The proliferation of lymphocyte cells treated with 1a was inhibited at a range from 14 to 28%, but the HaCaT cell line was not affected, suggesting that compound 1a has a selective action. Cytotoxic activity was evaluated by detecting the lactate dehydrogenase enzyme in supernatants from tumor and non-tumor cells. The 1a compound exhibited low or null cytotoxic activity in both cell types. The presence of apoptotic bodies and active caspase-3 in tumor cell lines treated with compound 1a are suggestive of apoptotic cell death. Notably, flow cytometry evaluation did not detect the presence of active caspase-3 on lymphocytes treated with this compound. Our results suggest that 5β-hydroxy-hirsutinolide is a molecule with antiproliferative activity and low cytotoxic activity in tumor and non-tumor cells; this induces apoptotic cell death in tumor cell lines through selective action. Hence, this lactone could be considered a molecule worthy of study as an anti-tumor agent with therapeutic potential.
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Affiliation(s)
- Fernando Flores-Guzmán
- Lab. Biología Molecular del Cáncer, Laboratorio 6, 2° piso. UMIEZ, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Ejercito de Oriente, Iztapalapa, 09230, CDMX, Mexico
| | - J Javier Alvarado-Sansininea
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510, CDMX, Mexico
| | - Hugo López-Muñoz
- Lab. Biología Molecular del Cáncer, Laboratorio 6, 2° piso. UMIEZ, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Ejercito de Oriente, Iztapalapa, 09230, CDMX, Mexico
| | - María L Escobar
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, 04510, CDMX, Mexico
| | - Mayra Espinosa-Trejo
- Lab. Biología Molecular del Cáncer, Laboratorio 6, 2° piso. UMIEZ, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Ejercito de Oriente, Iztapalapa, 09230, CDMX, Mexico
| | - Rosario Tavera-Hernandez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510, CDMX, Mexico
| | - Manuel Jiménez-Estrada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510, CDMX, Mexico.
| | - Luis Sánchez-Sánchez
- Lab. Biología Molecular del Cáncer, Laboratorio 6, 2° piso. UMIEZ, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Ejercito de Oriente, Iztapalapa, 09230, CDMX, Mexico.
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Differential secondary metabolite accumulation and performance of Chlosyne lacinia fed with Tithonia diversifolia or Vernonia polyanthes. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Miklossy G, Youn UJ, Yue P, Zhang M, Chen CH, Hilliard TS, Paladino D, Li Y, Choi J, Sarkaria JN, Kawakami JK, Wongwiwatthananukit S, Chen Y, Sun D, Chang LC, Turkson J. Hirsutinolide Series Inhibit Stat3 Activity, Alter GCN1, MAP1B, Hsp105, G6PD, Vimentin, TrxR1, and Importin α-2 Expression, and Induce Antitumor Effects against Human Glioma. J Med Chem 2015; 58:7734-48. [PMID: 26331426 DOI: 10.1021/acs.jmedchem.5b00686] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report that hirsutinolide series, 6, 7, 10, 11, 20, and 22, and the semisynthetic analogues, 30, 31, 33, and 36, inhibit constitutively active signal transducer and activator of transcription (Stat)3 and malignant glioma phenotype. A position 13 lipophilic ester group is required for activity. Molecular modeling and nuclear magnetic resonance structural analyses reveal direct hirsutinolide:Stat3 binding. One-hour treatment of cells with 6 and 22 also upregulated importin subunit α-2 levels and repressed translational activator GCN1, microtubule-associated protein (MAP)1B, thioredoxin reductase (TrxR)1 cytoplasmic isoform 3, glucose-6-phosphate 1-dehydrogenase isoform a, Hsp105, vimentin, and tumor necrosis factor α-induced protein (TNAP)2 expression. Active hirsutinolides inhibited anchorage-dependent and three-dimensional spheroid growth, survival, and migration of human glioma lines and glioma patients' tumor-derived xenograft cells harboring constitutively active Stat3. Oral gavage delivery of 6 or 22 inhibited human glioma tumor growth in subcutaneous mouse xenografts. The inhibition of Stat3 signaling represents part of the hirsutinolide-mediated mechanisms to induce antitumor effects.
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Affiliation(s)
| | - Ui Joung Youn
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo , Hilo 96720, Hawaii, United States
| | | | - Mingming Zhang
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo , Hilo 96720, Hawaii, United States
| | - Chih-Hong Chen
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope , Duarte 91010, California, United States
| | | | | | - Yifei Li
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope , Duarte 91010, California, United States
| | - Justin Choi
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope , Duarte 91010, California, United States
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic , Rochester 55905, Minnesota, United States
| | - Joel K Kawakami
- Division of Natural Sciences and Mathematics, Chaminade University , Honolulu 96816, Hawaii, United States
| | - Supakit Wongwiwatthananukit
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo , Hilo 96720, Hawaii, United States
| | - Yuan Chen
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope , Duarte 91010, California, United States
| | - Dianqing Sun
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo , Hilo 96720, Hawaii, United States
| | - Leng Chee Chang
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo , Hilo 96720, Hawaii, United States
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Prasopthum A, Pouyfung P, Sarapusit S, Srisook E, Rongnoparut P. Inhibition effects of Vernonia cinerea active compounds against cytochrome P450 2A6 and human monoamine oxidases, possible targets for reduction of tobacco dependence. Drug Metab Pharmacokinet 2015; 30:174-81. [PMID: 25857233 DOI: 10.1016/j.dmpk.2014.12.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/25/2014] [Accepted: 12/21/2014] [Indexed: 12/19/2022]
Abstract
The human cytochrome P450 2A6 (CYP2A6) and monoamine oxidases (MAO-A and MAO-B), catalyzing nicotine and dopamine metabolisms, respectively, are two therapeutic targets of nicotine dependence. Vernonia cinerea, a medicinal plant commonly used for treatment of diseases such as asthma and bronchitis, has been shown reducing tobacco dependence effect among tobacco users. In the present study, we found eight active compounds isolated from V. cinerea that comprise inhibitory activity toward CYP2A6 and MAO-A and MAO-B enzymes using activity-guided assays, with coumarin as substrate of CYP2A6 and kynuramine of MAOs. These compounds were three flavones (apigenin, chrysoeriol, luteolin), one flavonol (quercetin), and four hirsutinolide-type sesquiterpene lactones (8α-(2-methylacryloyloxy)-hirsutinolide-13-O-acetate, 8α-(4-hydroxymethacryloyloxy)-hirsutinolide-13-O-acetate, 8α-tigloyloxyhirsutinolide-13-O-acetate, and 8α-(4-hydroxytigloyloxy)-hirsutinolide-13-O-acetate). Modes and kinetics of inhibition against the three enzymes were determined. Flavonoids possessed strong inhibitory effect on CYP2A6 in reversible mode, while inhibition by hirsutinolides was mechanism-based (NADPH-, concentration-, and time-dependence) and irreversible. Inhibition by hirsutinolides could not be reversed by dialysis and by addition of trapping agents or potassium ferricyanide. Flavonoids inhibited MAOs with variable degrees and were more prominent in inhibition toward MAO-A than hirsutinolides, while two of hirsutinolides inhibited MAO-B approximately comparable to two flavonoids. These results could have implications in combination of drug therapy for smoking cessation.
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Affiliation(s)
- Aruna Prasopthum
- Department of Biochemistry, Faculty of Science, Mahidol University, 272 Rama 6 Rd., Ratchathewi, Bangkok 10400, Thailand
| | - Phisit Pouyfung
- Department of Biochemistry, Faculty of Science, Mahidol University, 272 Rama 6 Rd., Ratchathewi, Bangkok 10400, Thailand
| | - Songklod Sarapusit
- Department of Biochemistry, Faculty of Science, Burapha University, 169 Long-Hard Bangsaen Rd., Mueang, Chonburi 20131, Thailand
| | - Ekaruth Srisook
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, 169 Long-Hard Bangsaen Rd., Mueang, Chonburi 20131, Thailand
| | - Pornpimol Rongnoparut
- Department of Biochemistry, Faculty of Science, Mahidol University, 272 Rama 6 Rd., Ratchathewi, Bangkok 10400, Thailand.
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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: 118] [Impact Index Per Article: 10.7] [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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Predicting in silico which mixtures of the natural products of plants might most effectively kill human leukemia cells? EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:801501. [PMID: 23431350 PMCID: PMC3569894 DOI: 10.1155/2013/801501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 12/06/2012] [Accepted: 12/10/2012] [Indexed: 11/18/2022]
Abstract
The aim of the analysis of just 13 natural products of plants was to predict the most likely effective artificial mixtures of 2-3 most effective natural products on leukemia cells from over 364 possible mixtures. The natural product selected included resveratrol, honokiol, chrysin, limonene, cholecalciferol, cerulenin, aloe emodin, and salicin and had over 600 potential protein targets. Target profiling used the Ontomine set of tools for literature searches of potential binding proteins, binding constant predictions, binding site predictions, and pathway network pattern analysis. The analyses indicated that 6 of the 13 natural products predicted binding proteins which were important targets for established cancer treatments. Improvements in effectiveness were predicted for artificial combinations of 2 or 3 natural products. That effect might be attributed to drug synergism rather than increased numbers of binding proteins bound (dose effects). Among natural products, the combinations of aloe emodin with mevinolin and honokiol were predicted to be the most effective combination for AML-related predicted binding proteins. Therefore, plant extracts may in future provide more effective medicines than the single purified natural products of modern medicine, in some cases.
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Discovery of structurally diverse and bioactive compounds from plant resources in China. Acta Pharmacol Sin 2012; 33:1147-58. [PMID: 22941284 DOI: 10.1038/aps.2012.105] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
This review describes the major discoveries of structurally diverse and/or biologically significant compounds from plant resources in China, mainly from the traditional Chinese medicines (TCMs) since the establishment of our research group in 1999. In the past decade, a large array of biologically significant and novel structures has been identified from plant resources (or TCM) in our laboratory. The structural modification of several biologically important compounds led to more than 400 derivatives, some of which exhibited significantly improved activities and provided opportunities to elucidate the structure-activity relationship of the related compound class. These findings are important for drug discovery and help us understand the biological basis for the traditional applications of these plants in TCM.
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Hua L, Qi WY, Hussain SH, Gao K, Arfan M. Highly oxygenated stigmastane-type steroids from the aerial parts of Vernonia anthelmintica Willd. Steroids 2012; 77:811-8. [PMID: 22445686 DOI: 10.1016/j.steroids.2012.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 03/05/2012] [Accepted: 03/06/2012] [Indexed: 10/28/2022]
Abstract
Nine new highly oxygenated stigmastane-type steroids, vernoanthelcin A-I (1-9), and two new stigmastane-type steroidal glycosides, vernoantheloside A and B (10 and 11) were isolated from the aerial parts of Vernonia anthelmintica Willd. The structures of compounds 1-11 were determined on the basis of IR, MS, 1D-NMR, and 2D-NMR, and their absolute configurations were deduced using single-crystal X-ray diffraction and the CD exciton chirality method. Compounds 1, 5, 7, 9 and 10 were tested for their effects on estrogen biosynthesis in human ovarian granulosa-like cells (KGN cells).
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Affiliation(s)
- Lei Hua
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
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Hua L, Li Y, Wang F, Lu DF, Gao K. Biologically active steroids from the aerial parts of Vernonia anthelmintica Willd. Fitoterapia 2012; 83:1036-41. [PMID: 22634578 DOI: 10.1016/j.fitote.2012.05.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 05/15/2012] [Accepted: 05/17/2012] [Indexed: 11/16/2022]
Abstract
A new steroid, vernoanthelsterone A (1), and five known steroids were isolated from the aerial parts of Vernonia anthelmintica Willd. Compound 1 possesses a Δ(8(14))-15-one moiety. To our best knowledge, few steroids with this moiety have been reported before. Compounds 1-6 were tested for their antibacterial activities and their effects on estrogen biosynthesis in human ovarian granulosa-like cells (KGN cells). Compound 2 showed the ability to promote estrogen biosynthesis with EC(50) of 56.95 μg/mL and also exhibited the antibacterial activities against Bacillus cereus, Staphyloccocus aureus, Bacillus subtilis and Escherichia coli with MICs ranging from 3.15 to 15.5 μg/mL. The structures of 1-6 were determined on the basis of IR, MS, 1D and 2D NMR.
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Affiliation(s)
- Lei Hua
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China
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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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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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