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Stobiecka A. A DFT Study on the Radical-Scavenging Properties of Ferruginol-Type Diterpenes. FOOD BIOPHYS 2018. [DOI: 10.1007/s11483-018-9550-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Ardiles A, Barrientos R, Simirgiotis MJ, Bórquez J, Sepúlveda B, Areche C. Gastroprotective Activity of Parastrephia quadrangularis (Meyen), Cabrera from the Atacama Desert. Molecules 2018; 23:molecules23092361. [PMID: 30223578 PMCID: PMC6225235 DOI: 10.3390/molecules23092361] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/07/2018] [Accepted: 09/14/2018] [Indexed: 12/19/2022] Open
Abstract
Forty-three metabolites including several methoxylated flavonoids, tremetones, and ent-clerodane diterpenes were accurately identified for the first time in the ethanolic extract of P. quadrangularis by means of hyphenated UHPLC-quadrupole Orbitrap mass spectrometry, and seven isolated compounds were tested regarding gastroprotective activity using the HCl/EtOH-induced lesion model in mice. A new tremetone (compound 6) is reported based on spectroscopic evidence. The isolated clerodanes and tremetones showed gastroprotective activity in a mouse model, evidenced by compound 7 (p-coumaroyloxytremetone), which showed the highest gastroprotective activity (76%), which was higher than the control drug lansoprazole (72%). Our findings revealed that several constituents of this plant have gastroprotective activity, and particularly, p-coumaroyloxytremetone could be considered as a lead molecule to explore new gastroprotective agents. This plant is a rich source of biologically active tremetones and terpenoids which can support the ethnobotanical use of the plant.
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Affiliation(s)
- Alejandro Ardiles
- Departamento de Química y Farmacia, Facultad de Ciencias, Universidad Católica del Norte, Angamos 0610, Antofagasta 1240000, Chile.
| | - Ruth Barrientos
- Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5090000, Chile.
| | - Mario J Simirgiotis
- Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5090000, Chile.
- Center for Interdisciplinary Studies on the Nervous System (CISNe), Universidad Austral de Chile, Valdivia 5090000, Chile.
| | - Jorge Bórquez
- Laboratorio de Productos Naturales, Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Casilla 170, Antofagasta 1240000, Chile.
| | - Beatriz Sepúlveda
- Departamento de Ciencias Químicas, Universidad Andres Bello, Campus Viña del Mar, Quillota 980, Viña del Mar 2520000, Chile.
| | - Carlos Areche
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Santiago 8320198, Chile.
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3
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Synthesis, Antiviral and Cytotoxic Activity of Novel Terpenyl Hybrid Molecules Prepared by Click Chemistry. Molecules 2018; 23:molecules23061343. [PMID: 29865273 PMCID: PMC6099630 DOI: 10.3390/molecules23061343] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 12/17/2022] Open
Abstract
Naturally occurring terpenes were combined by click reactions to generate sixteen hybrid molecules. The diterpene imbricatolic acid (IA) containing an azide group was used as starting compound for the synthesis of all the derivatives. The alkyne group in the terpenes cyperenoic acid, dehydroabietinol, carnosic acid γ-lactone, ferruginol, oleanolic acid and aleuritolic acid was obtained by esterification using appropriate alcohols or acids. The hybrid compounds were prepared by combining the IA azide function with the different terpene-alkynes under click chemistry conditions. The cytotoxic activity of the terpene hybrids 1–16 was assessed against Vero cells and tumour cell lines (HEP-2, C6 and Raw 264.7). Compounds 1, 2, 3 and 7 showed cytotoxic activity against the tested cell lines. The antiviral activity of the compounds was evaluated against HSV-1 KOS, Field and B2006 strain. For the pairs of hybrid compounds formed between IA-diterpene (compounds 3–8, except for compound 7), a moderate activity was observed against the three HSV-1 strains with an interesting selectivity index (SI ≥10, SI = CC50/CE50) for some compounds.
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4
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Laamari Y, Ait Itto MY, Riahi A, Chevreux S, Auhmani A, Ketatni EM. Crystal structure of (4b S,8a R)-1-isopropyl-4b,8,8-trimethyl-7-oxo-4b,7,8,8a,9,10-hexa-hydro-phenanthren-2-yl acetate. Acta Crystallogr E Crystallogr Commun 2018; 74:728-730. [PMID: 29850101 PMCID: PMC5947497 DOI: 10.1107/s2056989018005510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 04/09/2018] [Indexed: 11/29/2022]
Abstract
The title compound, C22H28O3, was prepared by a direct acetyl-ation reaction of naturally occurring totarolenone. The mol-ecule contains three fused rings, which exhibit different conformations. The central ring has a half-chair conformation, while the non-aromatic oxo-substituted ring has a screw-boat conformation. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and C-H⋯π inter-actions, forming sheets parallel to the bc plane. The carbonyl O atoms and the C atom at the 6-position of the cyclo-hexene ring are each disordered over two sets of sites with major occupancy components of 0.63 (7) and 0.793 (14), respectively.
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Affiliation(s)
- Yassine Laamari
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - Moulay Youssef Ait Itto
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - Abdelkhalek Riahi
- Institute of Molecular Chemistry of Reims, CNRS UMR 7312 Bat. Europol’Agro, Moulin of the Housse UFR Sciences, BP 1039-51687 Reims Cedex 2, France
| | - Sylviane Chevreux
- Institute of Molecular Chemistry of Reims, CNRS UMR 7312 Bat. Europol’Agro, Moulin of the Housse UFR Sciences, BP 1039-51687 Reims Cedex 2, France
| | - Aziz Auhmani
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - El Mostafa Ketatni
- Laboratory of Applied Spectro-Chemistry and Environment, University Sultan Moulay Slimane, Faculty of Science and Technology, PO Box 523, Beni-Mellal, Morocco
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5
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Parra T, Benites J, Ruiz LM, Sepulveda B, Simirgiotis M, Areche C. Gastroprotective activity of ent-beyerene derivatives in mice: Effects on gastric secretion, endogenous prostaglandins and non-protein sulfhydryls. Bioorg Med Chem Lett 2015; 25:2813-7. [DOI: 10.1016/j.bmcl.2015.04.095] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 04/23/2015] [Accepted: 04/30/2015] [Indexed: 01/08/2023]
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6
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Topical Anti-inflammatory Activity of New Hybrid Molecules of Terpenes and Synthetic Drugs. Molecules 2015; 20:11219-35. [PMID: 26096431 PMCID: PMC6272242 DOI: 10.3390/molecules200611219] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/28/2015] [Accepted: 06/11/2015] [Indexed: 02/01/2023] Open
Abstract
The aim of the study was to assess changes in the activity of anti-inflammatory terpenes from Chilean medicinal plants after the formation of derivatives incorporating synthetic anti-inflammatory agents. Ten new hybrid molecules were synthesized combining terpenes (ferruginol (1), imbricatolic acid (2) and oleanolic acid (3)) with ibuprofen (4) or naproxen (5). The topical anti-inflammatory activity of the compounds was assessed in mice by the arachidonic acid (AA) and 12-O-tetradecanoyl phorbol 13-acetate (TPA) induced ear edema assays. Basal cytotoxicity was determined towards human lung fibroblasts, gastric epithelial cells and hepatocytes. At 1.4 µmol/mouse, a strong anti-inflammatory effect in the TPA assay was observed for oleanoyl ibuprofenate 12 (79.9%) and oleanoyl ibuprofenate methyl ester 15 (80.0%). In the AA assay, the best activity was observed for 12 at 3.2 µmol/mouse, with 56.8% reduction of inflammation, in the same range as nimesulide (48.9%). All the terpenyl-synthetic anti-inflammatory hybrids showed better effects in the TPA assay, with best activity for 6, 12 and 15. The cytotoxicity of the compounds 8 and 10 with a free COOH, was higher than that of 2. The derivatives from 3 were less toxic than the triterpene. Several of the new compounds presented better anti-inflammatory effect and lower cytotoxicity than the parent terpenes.
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7
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Areche C, Benites J, Cornejo A, Ruiz LM, García-Beltrán O, Simirgiotis MJ, Sepúlveda B. Seco-taondiol, an unusual meroterpenoid from the Chilean seaweed Stypopodium flabelliforme and its gastroprotective effect in mouse model. Mar Drugs 2015; 13:1726-38. [PMID: 25830679 PMCID: PMC4413184 DOI: 10.3390/md13041726] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/01/2015] [Accepted: 03/20/2015] [Indexed: 11/16/2022] Open
Abstract
Ten known meroterpenoids and the new meroterpenoid 7 were isolated from the Chilean seaweed Stypopodium flabelliforme as their acetylated derivatives. Furthermore, the known metabolite taondiol has been isolated for the first time from this species. The molecular structure of the new metabolite was determined by spectroscopic methods based on 1D- and 2D-NMR. Isolation of 7 represents a key step toward a better understanding of the biogenesis of this class of meroterpenoids. Among the meroditerpenoids isolated, stypodiol, isoepitaondiol, epitaondiol and sargaol exhibited gastroprotective activity on the HCl/Ethanol-induced gastric lesions model in mice. Regarding the mode of gastroprotective action, the activity of epitaondiol was reversed significantly when animals were pretreated with indomethacin, N-ethylmaleimide and N-nitro-l-arginine methyl ester (L-NAME) suggesting that prostaglandins, sulfhydryl groups and nitric oxide are involved in their mode of gastroprotective action. In the case of sargaol the gastroprotective activity was attenuated with indomethacin and N-ethylmaleimide, which suggests that prostaglandins and sulfhydryl groups are also involved in the mode of action using this model.
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Affiliation(s)
- Carlos Areche
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Santiago 8320000, Chile.
| | - Julio Benites
- Facultad de Ciencias de la Salud, Universidad Arturo Prat, Casilla 121, Iquique 1100000, Chile.
| | - Alberto Cornejo
- Escuela de Tecnología Médica, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370186, Chile.
| | - Lina M Ruiz
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910132, Chile.
| | - Olimpo García-Beltrán
- Facultad de Ciencias Naturales y Matemáticas, Universidad de Ibagué, Carrera 22 Calle 67, Ibagué 730001, Colombia.
| | - Mario J Simirgiotis
- Laboratorio de Productos Naturales, Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Antofagasta 1240000, Chile.
| | - Beatriz Sepúlveda
- Departmento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Quillota 980, Viña del Mar 2520000, Chile.
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8
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González MA. Synthetic derivatives of aromatic abietane diterpenoids and their biological activities. Eur J Med Chem 2014; 87:834-42. [PMID: 25440884 DOI: 10.1016/j.ejmech.2014.10.023] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 11/28/2022]
Abstract
Naturally occurring aromatic abietane diterpenoids (dehydroabietanes) exhibit a wide range of biological activities. A number of synthetic studies aimed at modifying the abietane skeleton in order to obtain new potential chemotherapeutic agents have been reported. In this study, the biological activities of synthetic derivatives of aromatic abietane diterpenoids are reviewed.
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Affiliation(s)
- Miguel A González
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain.
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9
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Zhong M, Wu H, Zhang X, Sun G, Sun G, Yu S, Xu X. A new diterpene from Clinopodium chinense. Nat Prod Res 2014; 28:467-72. [DOI: 10.1080/14786419.2013.879132] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mingliang Zhong
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Peking Union Medical College, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Haifeng Wu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Peking Union Medical College, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Xiaopo Zhang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Peking Union Medical College, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Guangli Sun
- Department of Pharmacy, School of Pharmacy, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Guibo Sun
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Peking Union Medical College, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Shichun Yu
- Beijing Hong Tai Chi Chung Medical Technology Co., Ltd., Beijing 102600, P.R. China
| | - Xudong Xu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Peking Union Medical College, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
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10
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Areche C, Rojas-Alvarez F, Campos-Briones C, Lima C, Pérez EG, Sepúlveda B. Further mulinane diterpenoids from Azorella compacta. ACTA ACUST UNITED AC 2013; 65:1231-8. [PMID: 23837591 DOI: 10.1111/jphp.12083] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/11/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The chemical study of a dichloromethane extract from Azorella compacta was directed to the isolation of characteristic mulinane and azorellane diterpenoids in order to determine their gastroprotective activity. METHODS Usual chromatographic techniques on the extract led to the isolation of 12 compounds, which were identified by their spectroscopic properties. The HCl/ethanol-induced gastric lesions model in mice was used to determine the gastroprotective activity. KEY FINDINGS The new diterpenoids, 13β-hydroxymulinane (1), mulin-11,13-dien-20-ol (2), 13α-methoxyazorellanol (3) and mulin-11,13-dien-18-acetoxy-16,20-dioic acid (12) were isolated from A. compacta. The known diterpenoids mulin-11,13-dien-20-oic acid (4), 13α-hydroxyazorellane (5), 13β-hydroxyazorellane (6), mulinic acid (7), mulinolic acid (8) and azorellanol (9), and the aromatic compounds 5,7-dihydroxychromone (10) and isoflavonoid biochanin A (11), were also obtained from the extract. Compounds 6, 9 and 12 at 20 mg/kg reduced gastric lesions by 69%, 71% and 73%, respectively, being statistically similar to lansoprazole at the same dose. CONCLUSIONS The results corroborate the intraspecific chemical variations detected previously in specimens of A. compacta collected at different Chilean latitudes. A high concentration of azorellanol (9) could account in part for some of the therapeutic properties attributed to this species, in particular in ulcer treatment. Most of the mulinane and azorellane diterpenoids isolated in this study showed relevant gastroprotective activity at a low dose in the bioassay.
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Affiliation(s)
- Carlos Areche
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.
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11
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Olate VR, Usandizaga OG, Schmeda-Hirschmann G. Resin diterpenes from Austrocedrus chilensis. Molecules 2011; 16:10653-67. [PMID: 22186953 PMCID: PMC6264339 DOI: 10.3390/molecules161210653] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 11/25/2011] [Accepted: 12/07/2011] [Indexed: 11/16/2022] Open
Abstract
Seventeen diterpenes belonging to the labdane, abietane and isopimarane skeleton classes were isolated from the resin of the Chilean gymnosperm Austrocedrus chilensis and identified by spectroscopic and spectrometric methods. The diterpene 12-oxo-labda-8(17),13E-dien-19 oic acid is reported for the first time as a natural product and 14 diterpenes are reported for the first time for the species.
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Affiliation(s)
- Verónica Rachel Olate
- Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
| | - Olatz Goikoetxeaundia Usandizaga
- Facultad de Ciencias Químicas, Campus de Gipuzkoa, Euskal Herriko Unibertsitatea, Pº Manuel de Lardizábal 3, 20018 Donostia-San Sebastián, Spain
| | - Guillermo Schmeda-Hirschmann
- Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
- Author to whom correspondence should be addressed; ; Tel.: +56-71-200-288; Fax: +56-71-201-573
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Pertino MW, Theoduloz C, Palenzuela JA, del Mar Afonso M, Yesilada E, Monsalve F, González P, Droguett D, Schmeda-Hirschmann G. Synthesis and pharmacological activity of diterpenylnaphthoquinone derivatives. Molecules 2011; 16:8614-28. [PMID: 21996716 PMCID: PMC6264310 DOI: 10.3390/molecules16108614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 09/29/2011] [Accepted: 09/30/2011] [Indexed: 11/16/2022] Open
Abstract
New diterpenylquinones, combining a diterpene diacid and a naphthoquinone, were prepared from junicedric acid and lapachol. The new derivatives were assessed as gastroprotective agents by the HCl-EtOH-induced gastric lesions model in mice as well as for basal cytotoxicity on the following human cell lines: Normal lung fibroblasts (MRC-5), gastric epithelial adenocarcinoma (AGS), and hepatocellular carcinoma (Hep G2). Several of the new compounds were significantly active as antiulcer agents and showed selective cytotoxicity against AGS cells.
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Affiliation(s)
- Mariano Walter Pertino
- Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
| | - Cristina Theoduloz
- Facultad de Ciencias de la Salud, Universidad de Talca, Casilla 747, Talca, Chile
| | - Jose Antonio Palenzuela
- Instituto Universitario de Bio-Orgánica Antonio Gonzalez G., Universidad de La Laguna, Tenerife 38206, Spain
| | - Maria del Mar Afonso
- Instituto Universitario de Bio-Orgánica Antonio Gonzalez G., Universidad de La Laguna, Tenerife 38206, Spain
| | - Erdem Yesilada
- Faculty of Pharmacy, Yeditepe University, Istanbul 34755, Turkey
| | - Francisco Monsalve
- Facultad de Ciencias de la Salud, Universidad de Talca, Casilla 747, Talca, Chile
| | - Paulo González
- Facultad de Ciencias de la Salud, Universidad de Talca, Casilla 747, Talca, Chile
| | - Daniel Droguett
- Facultad de Ciencias de la Salud, Universidad de Talca, Casilla 747, Talca, Chile
| | - Guillermo Schmeda-Hirschmann
- Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
- Author to whom correspondence should be addressed; ; Tel.: +56-71-200288; Fax: + 56-71-201573
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Pertino MW, Theoduloz C, Rodríguez JA, Yáñez T, Lazo V, Schmeda-Hirschmann G. Gastroprotective effect of carnosic acid gamma-lactone derivatives. JOURNAL OF NATURAL PRODUCTS 2010; 73:639-643. [PMID: 20359186 DOI: 10.1021/np900822x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Carnosic acid (1) has been shown to possess gastroprotective activity in vitro and in vivo. However, little is known of the gastroprotective effect or cytotoxicity of carnosic acid gamma-lactone (3). To determine structure-activity relationships, a series of 17 esters of 3 were prepared including aliphatic, aromatic, and heterocyclic derivatives. Also, two units of 3 were coupled with succinic and phthalic acid as linkers. The compounds were assessed for their gastroprotective effect in the HCl/EtOH-induced gastric lesions model in mice and for cytotoxicity in human lung fibroblasts, human adenocarcinoma AGS cells, and Hep G2 hepatocellular carcinoma cells. At a single oral dose of 40 mg/kg, the gastroprotective effect increased moderately with the length of the alkyl chain. The best effects were observed for the butyrate (9) and chloroacetate (6) derivatives. Activity of fatty acid esters increased with chain length but decreased with unsaturation. The best gastroprotective effect, with lowest cytotoxicity, was found for the palmitate (11) and oleate (12) derivatives.
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Affiliation(s)
- Mariano Walter Pertino
- Laboratorio de Quimica de Productos Naturales, Instituto de Quimica de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
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14
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Areche C, Schmeda-Hirschmann G, Theoduloz C, Rodríguez JA. Gastroprotective effect and cytotoxicity of abietane diterpenes from the Chilean Lamiaceae Sphacele chamaedryoides (Balbis) Briq. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.12.0015] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abstract
Objectives
The aim of this report was to isolate, identify and assess the gastroprotective effect and cytotoxicity of abietane diterpenes from the Chilean medicinal plant Sphacele chamaedryoides (Balbis) Briq. (Lamiaceae).
Methods
The isolated compounds were identified by spectroscopic means. The gastroprotective effect of the compounds was studied on the HCl/EtOH-induced gastric lesions model in mice. The cytotoxicity of the compounds was assessed on human normal lung fibroblasts (MRC-5) and gastric adenocarcinoma cells (AGS).
Key findings
From the aerial parts of the plant, five phenolic and five p-quinone abietanes, the sesquiterpene spathulenol and two flavonoids were obtained. The main diterpene from the plant was carnosol (7). Lansoprazole at 20 mg/kg reduced gastric lesions by 64.7% (P < 0.01), being statistically similar to carnosol at doses of 10 and 20 mg/kg; the percent lesion reduction with 7 at 5 mg/kg was 49.3%. At a single oral dose of 5 mg/kg, the diterpenes bearing a p-quinone moiety −6,7-dehydroroyleanone (1), royleanone (2), 7,20-epoxyroyleanone (3), taxoquinone (5) and horminone (6) - presented a gastroprotective effect of 54.4, 70.8, 65.0, 35.8 and 52.7%, respectively. Of the C-7 hydroxy derivatives, the activity was much lower for the 7β-OH isomer. The phenolic diterpenes 7 and 7-oxo-11,12,14-trihydroxy-8,11,13-abietatrien-20-al (8) inhibited gastric lesions by 49.3 and 53.0%, respectively. Royleanone (2), 7,20-epoxyroyleanone (3), horminone (6), 8 and spathulenol proved to be cytotoxic with IC50 values in the range of 11–67 μM. The selective cytotoxicity of compounds 1 (IC50: 61 and 366 μM) and 5 (IC50: 310 and 27 μM) against AGS cells and fibroblasts, respectively, merit additional studies.
Conclusions
All the abietanes obtained from S. chamaedryoides present either one or two phenolic OH groups, a quinone system, or both. Several compounds present in the plant showed higher gastroprotective effect than lansoprazole. The cytotoxic effect of most compounds was found at fairly high concentrations and lacked cell specificity. Further studies are required using different tumour cell lines and viability/proliferation assays to assess the specificity of the isolated compounds. The selective cytotoxicity of compounds 1 and 5 against AGS cells and fibroblasts, respectively, merit additional studies.
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Affiliation(s)
- Carlos Areche
- Laboratorio de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad deTalca, Talca, Chile
| | - Guillermo Schmeda-Hirschmann
- Laboratorio de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad deTalca, Talca, Chile
| | - Cristina Theoduloz
- Depto. de Ciencias Básicas Biomédicas, Facultad de Ciencias de la Salud, Universidad deTalca, Talca, Chile
| | - Jaime A Rodríguez
- Depto. de Ciencias Básicas Biomédicas, Facultad de Ciencias de la Salud, Universidad deTalca, Talca, Chile
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15
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Bispo de Jesus M, Zambuzzi WF, Ruela de Sousa RR, Areche C, Santos de Souza AC, Aoyama H, Schmeda-Hirschmann G, Rodríguez JA, Monteiro de Souza Brito AR, Peppelenbosch MP, den Hertog J, de Paula E, Ferreira CV. Ferruginol suppresses survival signaling pathways in androgen-independent human prostate cancer cells. Biochimie 2008; 90:843-54. [PMID: 18294971 DOI: 10.1016/j.biochi.2008.01.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2007] [Accepted: 01/29/2008] [Indexed: 11/30/2022]
Abstract
Ferruginol, a bioactive compound isolated from a Chilean tree (Podocarpaceae), attracts attention as a consequence of its pharmacological properties, which include anti-fungal, anti-bacterial, cardioprotective, anti-oxidative, anti-plasmodial and anti-ulcerogenic actions. Nevertheless, the molecular basis for these actions remains only partly understood and hence we investigated the effects of ferruginol on androgen-independent human prostate cancer cells (PC3), a known model for solid tumor cells with an exceptional resistance to therapy. The results show that ferruginol induces PC3 cell death via activation of caspases as well as apoptosis-inducing factor (AIF) as confirmed by its translocation into the nucleus. In order to clarify the biochemical mechanism responsible for the anti-tumor activity of ferruginol, we analyzed a set of molecular mediators involved in tumor cell survival, progression and aggressiveness. Ferruginol was able to trigger inhibition/downregulation of Ras/PI3K, STAT 3/5, protein tyrosine phosphatase and protein kinases related to cell cycle regulation. Importantly, the toxic effect of ferruginol was dramatically impeded in a more reducing environment, which indicates that at least in part, the anti-tumoral activity of ferruginol might be related to redox status modulation. This study supports further examination of ferruginol as a potential agent for both the prevention and treatment of prostate cancer.
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Affiliation(s)
- Marcelo Bispo de Jesus
- Departamento de Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária, Zeferino Vaz, Barão Geraldo, 13083-970 Campinas, SP, Brazil
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