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Vela F, Anese S, Varela RM, Torres A, Molinillo JMG, Macías FA. Bioactive Diterpenes from the Brazilian Native Plant ( Moquiniastrum pulchrum) and Their Application in Weed Control. Molecules 2021; 26:molecules26154632. [PMID: 34361785 PMCID: PMC8348793 DOI: 10.3390/molecules26154632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022] Open
Abstract
Even today, weeds continue to be a considerable problem for agriculture. The application of synthetic herbicides produces serious environmental consequences, and crops suffer loss of their activity due to the appearance of new resistant weed biotypes. Our aim is to develop new effective natural herbicides that improve the problem of resistance and do not harm the environment. This work is focused on a bioassay-guided isolation and the characterization of natural products present in Moquiniastrum pulchrum leaves with phytotoxic activity and its preliminary application in weeds. Moquiniastrum pulchrum was selected for two reasons: it is an abundant species in the Cerrado region (the second most important ecosystem in Brazil, after the Amazon)—the explanation behind its being a dominant species is a major focus of interest—and it has traditional employment in folk medicine. Six major compounds were isolated in this plant: one flavone and five diterpenes, two of which are described for the first time in the literature. Four of the six compounds exhibited phytotoxic activity in the bioassays performed. The results confirmed the phytotoxic potential of this plant, which had not been investigated until now.
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Affiliation(s)
- Fátima Vela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
| | - Simoni Anese
- Federal Institute of Education, Science and Technology of Mato Grosso—Campus Campo Novo do Parecis, MT 235 Km 12, Campo Novo do Parecis 78360-000, Brazil;
| | - Rosa M. Varela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
- Correspondence: (R.M.V.); (A.T.); Tel.: +34-956-01-27-90 (R.M.V. & A.T.); Fax: +34-956-01-62-88 (R.M.V. & A.T.)
| | - Ascensión Torres
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
- Correspondence: (R.M.V.); (A.T.); Tel.: +34-956-01-27-90 (R.M.V. & A.T.); Fax: +34-956-01-62-88 (R.M.V. & A.T.)
| | - José M. G. Molinillo
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
| | - Francisco A. Macías
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
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Morarescu O, Grinco M, Kulciţki V, Barba A, Garbuz O, Gudumac V, Gulea A, Ungur N. A straightforward synthesis of natural oxygenated ent-kaurenoic acid derivatives. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1821225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Olga Morarescu
- Laboratory of Chemistry of Natural and Biologically Active Compounds, Institute of Chemistry MECR, Chişinău, Republic of Moldova
| | - Marina Grinco
- Laboratory of Chemistry of Natural and Biologically Active Compounds, Institute of Chemistry MECR, Chişinău, Republic of Moldova
| | - Veaceslav Kulciţki
- Laboratory of Chemistry of Natural and Biologically Active Compounds, Institute of Chemistry MECR, Chişinău, Republic of Moldova
| | - Alic Barba
- Laboratory of Chemistry of Natural and Biologically Active Compounds, Institute of Chemistry MECR, Chişinău, Republic of Moldova
| | - Olga Garbuz
- Department of Chemistry, Moldova State University MECR, Chişinău, Republic of Moldova
- Laboratory of Molecular Systematics and Phylogeny, Institute of Zoology MECR, Chişinău, Republic of Moldova
| | - Valentin Gudumac
- Laboratory of Biochemistry, Nicolae Testemitanu State University of Medicine and Pharmacy, Chişinău, Republic of Moldova
| | - Aurelian Gulea
- Department of Chemistry, Moldova State University MECR, Chişinău, Republic of Moldova
| | - Nicon Ungur
- Laboratory of Chemistry of Natural and Biologically Active Compounds, Institute of Chemistry MECR, Chişinău, Republic of Moldova
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Ndjoubi KO, Sharma R, Hussein AA. The Potential of Natural Diterpenes Against Tuberculosis: An Updated Review. Curr Pharm Des 2020; 26:2909-2932. [PMID: 32532186 DOI: 10.2174/1381612826666200612163326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/28/2020] [Indexed: 11/22/2022]
Abstract
Every year, 10 million people are affected by tuberculosis (TB). Despite being a preventable and curable disease, 1.5 million people die from TB each year, making it the world's top infectious disease. Many of the frontline antibiotics cause painful and disagreeable side effects. To mitigate the side effects from the use of chemically synthesized or clinical anti-tubercular drugs, there are many research studies focussed on natural products as a source of potential anti-tuberculosis drugs. Among different phytoconstituents, several classes of diterpenoids exert significant antimicrobial effects. This review explores diterpenoids as potential anti-tubercular drugs from natural sources. A total of 204 diterpenoids isolated from medicinal plants and marine species are discussed that inhibit the growth of Mycobacterium tuberculosis. The literature from 1994-2018 is reviewed, and 158 diterpenoids from medicinal plants, as well as 40 diterpenoids from marines, are alluded to have antituberculosis properties. The antitubercular activities discussed in the review indicate that the type of diterpenoids, the Mtb strains, substituents attached to diterpenoids and their position in the diterpenoids general skeleton can change the compounds antimycobacterial inhibitory effects.
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Affiliation(s)
- Kadidiatou O Ndjoubi
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
| | - Rajan Sharma
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
| | - Ahmed A Hussein
- Chemistry Department, Cape Peninsula University of Technology, Bellville Campus, Symphony Road, 7535 Bellville, South Africa
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Effect-directed analysis via hyphenated high-performance thin-layer chromatography for bioanalytical profiling of sunflower leaves. J Chromatogr A 2018; 1533:213-220. [DOI: 10.1016/j.chroma.2017.12.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/12/2017] [Accepted: 12/12/2017] [Indexed: 11/24/2022]
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In vitro mutagenicity assay (Ames test) and phytochemical characterization of seeds oil of Helianthus annuus Linné (sunflower). Toxicol Rep 2016; 3:733-739. [PMID: 28959599 PMCID: PMC5616081 DOI: 10.1016/j.toxrep.2016.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/09/2016] [Accepted: 09/12/2016] [Indexed: 11/25/2022] Open
Abstract
The objective of this research was to investigate the genotoxic potential of the oil of H. annuus L. (sunflower) seeds via the Ames test as well as its oxidative properties and lipid composition. The pre-incubation method, system metabolic activation (S9 fraction) and five S. typhimurium strains (TA97, TA98, TA100, TA1535 and TA102) were employed for the Ames test. The oxidative stability and fatty acid composition were analyzed by standard methods and gas chromatography. A revertant analysis showed no significant differences between the treatment doses (10–200 μl/plate) and the negative controls, regardless of S9+ and S9−, and included all of the S. typhimurium strains. Chromatographic analysis showed high levels of polyunsaturated fatty acids, followed by monounsaturated, saturated and total trans-isomers. Among the polyunsaturated, monounsaturated and saturated fatty acids, linoleic, oleic and palmitic acids predominated. The results suggest that the sunflower oil is not genotoxic as indicated by frameshift mutations and base pair substitutions regardless of the treatment dose, but shows dose-dependent toxicity. The oxidative properties of the sunflower oil were consistent with the requirements of national and international standards. However, its composition could also indicate phytotherapeutic properties.
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Coronado-Aceves EW, Sánchez-Escalante JJ, López-Cervantes J, Robles-Zepeda RE, Velázquez C, Sánchez-Machado DI, Garibay-Escobar A. Antimycobacterial activity of medicinal plants used by the Mayo people of Sonora, Mexico. JOURNAL OF ETHNOPHARMACOLOGY 2016; 190:106-115. [PMID: 27262564 DOI: 10.1016/j.jep.2016.05.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/24/2016] [Accepted: 05/31/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tuberculosis (TB) is an infectious disease mainly caused by Mycobacterium tuberculosis (Mtb), which generates 9 million new cases worldwide each year. The Mayo ethnicity of southern Sonora, Mexico is more than 2000 years old, and the Mayos possess extensive knowledge of traditional medicine. AIMS OF THE STUDY To evaluate the antimycobacterial activity levels of extracts of medicinal plants used by the Mayos against Mtb and Mycobacterium smegmatis (Msm) in the treatment of TB, respiratory diseases and related symptoms. MATERIALS AND METHODS A total of 34 plant species were collected, and 191 extracts were created with n-hexane, dichloromethane, ethyl acetate (EtOAc), methanol and water. Their minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) were determined against Mtb H37Rv using the microplate alamar blue assay (MABA) and against Msm using the resazurin microplate assay (REMA) at 6 and 2 days of exposure, respectively, and at concentrations of 250-1.9µg/mL (n-hexane extracts) and 1000-7.81µg/mL (extracts obtained with dichloromethane, EtOAc, methanol and water). RESULTS Rhynchosia precatoria (Willd.) DC. (n-hexane root extract), Euphorbia albomarginata Torr. and A. Gray. (EtOAc shoot extract) and Helianthus annuus L. (n-hexane stem extract) were the most active plants against Mtb H37Rv, with MICs of 15.6, 250, 250µg/mL and MBCs of 31.25, 250, 250µg/mL, respectively. R. precatoria (root) was the only active plant against Msm, with MIC and MBC values of ≥250µg/mL. None of the aqueous extracts were active. CONCLUSIONS This study validates the medicinal use of certain plants used by the Mayo people in the treatment of TB and related symptoms. R. precatoria, E. albomarginata and H. annuus are promising plant sources of active compounds that act against Mtb H37Rv. To our knowledge, this is the first time that their antimycobacterial activity has been reported. Crude extracts obtained with n-hexane, EtOAc and dichloromethane were the most active against Mtb H37Rv.
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Affiliation(s)
- Enrique Wenceslao Coronado-Aceves
- Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregón, Sonora, Mexico
| | - José Jesús Sánchez-Escalante
- Herbario USON, Departamento de Investigaciones Científicas y Tecnológicas, Universidad de Sonora, Niños Héroes entre Rosales y José María Pino Suárez, Edificio 1A (Museo), Colonia Centro, 83000 Hermosillo, Sonora, Mexico
| | - Jaime López-Cervantes
- Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregón, Sonora, Mexico
| | - Ramón Enrique Robles-Zepeda
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Encinas y Rosales, Colonia Centro, 83000 Hermosillo, Sonora, Mexico
| | - Carlos Velázquez
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Encinas y Rosales, Colonia Centro, 83000 Hermosillo, Sonora, Mexico
| | - Dalia Isabel Sánchez-Machado
- Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000 Ciudad Obregón, Sonora, Mexico
| | - Adriana Garibay-Escobar
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Encinas y Rosales, Colonia Centro, 83000 Hermosillo, Sonora, Mexico.
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Yeh MCP, Lin HH, Kuo SF, Chen PJ, Hong JW. Convenient Synthesis of (E)-5-Aryl(halo)methylenebicyclo- [2.2.2]oct-2-enes and -[2.2.1]hept-2-enesviaLewis Acid- Promoted Carbohalogenation of Cyclic 2,6-Enynols. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400671] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fomogne-Fodjo MCY, Van Vuuren S, Ndinteh DT, Krause RWM, Olivier DK. Antibacterial activities of plants from Central Africa used traditionally by the Bakola pygmies for treating respiratory and tuberculosis-related symptoms. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:123-131. [PMID: 24786571 DOI: 10.1016/j.jep.2014.04.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 04/15/2014] [Accepted: 04/19/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The antibacterial activities of 18 plants from 10 different families were investigated for their antimicrobial efficacy, based on the traditional uses of these species by Bakola pygmies living in Central Africa, especially along the Ngoyang area in Cameroon for the treatment of respiratory and tuberculosis-related symptoms. The aim of the study is to test the antimicrobial efficacy of these plants against some pathogens associated with respiratory disease and to determine if there is any validation for the traditional use against Mycobacterium species. MATERIALS AND METHODS Medium polar extracts were prepared in MeOH/DCM (1:1, v/v) from the plant parts of each species used traditionally and were assayed against pathogens associated with respiratory tract ailments [Staphylococcus aureus (ATCC 25923), Klebsiella pneumoniae (ATCC 13883) and Morexella cattarhalis (ATCC 14468)] using the minimum inhibitory concentration (MIC) method. Two additional faster growing Mycobacterium strains [Mycobacterium smegmatis (ATCC 23246) and Mycobacterium aurum (NCTC 10437)] were included in the assay as predictive test organisms for the more pathogenic strain Mycobacterium tuberculosis. RESULTS Some plant species, such as Alchornea floribunda, Musanga cecropioides (both leaves and stem bark), Tetracera potatoria and Xylopia aethiopica (stem bark), were effective in inhibiting Morexella cattarhalis, having MIC values between 65 and 250 μg/mL. Some noteworthy antimycobacterial inhibition (MIC≤200 μg/mL and as low as MIC 6.5 µg/mL) for 54% of the extracts were observed. CONCLUSION While moderate activity was shown for pathogens causing respiratory tract infections, these plant species seems to be selectively targeting Mycobacteria spp. suggesting that the traditional use for treating tuberculosis related symptoms may be indeed be accurate.
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Affiliation(s)
- M C Y Fomogne-Fodjo
- Department of Applied Chemistry, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa
| | - S Van Vuuren
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
| | - D T Ndinteh
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | - R W M Krause
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
| | - D K Olivier
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
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Rico-Martínez M, Medina FG, Marrero JG, Osegueda-Robles S. Biotransformation of diterpenes. RSC Adv 2014. [DOI: 10.1039/c3ra45146a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Structural modification of the diterpenes to enhance their pharmaceutical relevance can be efficiently carried out by the application of biotransformational under mild reaction.
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Affiliation(s)
- María Rico-Martínez
- Instituto Politécnico Nacional
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato
- C.P. 36275 Silao de la Victoria, Mexico
| | - Fernanda G. Medina
- Instituto Politécnico Nacional
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato
- C.P. 36275 Silao de la Victoria, Mexico
| | - Joaquín G. Marrero
- Instituto Politécnico Nacional
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato
- C.P. 36275 Silao de la Victoria, Mexico
| | - Soraya Osegueda-Robles
- Instituto Politécnico Nacional
- Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato
- C.P. 36275 Silao de la Victoria, Mexico
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Morarescu O, Grinco M, Dragalin I, Kulciţki V, Ungur N. Study on Extraction Process of Sunflower (Helianthus Annuus L.) Dry Wastes Using Different Solvents. CHEMISTRY JOURNAL OF MOLDOVA 2013. [DOI: 10.19261/cjm.2013.08(2).11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Onoja SO, Anaga AO. Evaluation of the antidiabetic and antioxidant potentials of methanolic leaf extract of Helianthus annuus L. on alloxan-induced hyperglycemic rats. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s00580-013-1824-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lizarte Neto FS, Tirapelli DPC, Ambrosio SR, Tirapelli CR, Oliveira FM, Novais PC, Peria FM, Oliveira HF, Carlotti Junior CG, Tirapelli LF. Kaurene diterpene induces apoptosis in U87 human malignant glioblastoma cells by suppression of anti-apoptotic signals and activation of cysteine proteases. ACTA ACUST UNITED AC 2013; 46:71-78. [PMID: 23314342 PMCID: PMC3854348 DOI: 10.1590/1414-431x20121423] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 09/14/2012] [Indexed: 12/13/2022]
Abstract
Gliomas are the most common and malignant primary brain tumors in humans. Studies have shown that classes of kaurene diterpene have anti-tumor activity related to their ability to induce apoptosis. We investigated the response of the human glioblastoma cell line U87 to treatment with ent-kaur-16-en-19-oic acid (kaurenoic acid, KA). We analyzed cell survival and the induction of apoptosis using flow cytometry and annexin V staining. Additionally, the expression of anti-apoptotic (c-FLIP and miR-21) and apoptotic (Fas, caspase-3 and caspase-8) genes was analyzed by relative quantification (real-time PCR) of mRNA levels in U87 cells that were either untreated or treated with KA (30, 50, or 70 µM) for 24, 48, and 72 h. U87 cells treated with KA demonstrated reduced viability, and an increase in annexin V- and annexin V/PI-positive cells was observed. The percentage of apoptotic cells was 9% for control cells, 26% for cells submitted to 48 h of treatment with 50 µM KA, and 31% for cells submitted to 48 h of treatment with 70 µM KA. Similarly, in U87 cells treated with KA for 48 h, we observed an increase in the expression of apoptotic genes (caspase-8, -3) and a decrease in the expression of anti-apoptotic genes (miR-21 and c-FLIP). KA possesses several interesting properties and induces apoptosis through a unique mechanism. Further experiments will be necessary to determine if KA may be used as a lead compound for the development of new chemotherapeutic drugs for the treatment of primary brain tumors.
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Affiliation(s)
- F S Lizarte Neto
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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Rojas J, Aparicio R, Villasmil T, Peña A, Usubillaga A. On the Isomerization of ent-Kaurenic Acid. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Kaurenic acid (1a) is a tetracyclic diterpene that has an exocyclic double bond at Δ16. Isokaurenic acid (2a) has an endocyclic Δ15double bond. This compound has been isolated from Espeletia tenore (Espeletinae), a resinous plant from the Venezuelan Andes, but its occurrence is rare. In order to obtain a larger amount of 2a, the isomerization of 1a, which is easily obtained from other Espeletinae, was tried. Kaurenic acid methyl ester (1b) was treated with dil. HCl in CH3Cl/EtOH, after 6 h under reflux a yield of 41.5% isokaurenic acid methyl ester (2b) was obtained but 35.7% 16α-ethoxy-kauran-19-oic acid methyl ester (3b) had formed as a byproduct. Treating 1b with CF3COOH in refluxing CH2Cl2 permitted to obtain a yield of 66.6 % of 2b in 4 h and only traces of 16α-hydroxy-kauran-19-oic acid methyl ester (3a) as a byproduct. Both isomers were separated on a silica gel column impregnated with 20% AgNO3. Treating 2b with KOH in refluxing DMSO yielded pure isokaurenic acid, no back isomerization was observed.
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Affiliation(s)
- Julio Rojas
- Postgrado de Quimica de Medicamento, Facultad de Farmacia y Bioanálisis, Universidad de Los Andes, Mérida, Venezuela
| | - Rosa Aparicio
- Instituto de Investigaciones, Facultad de Farmacia y Bioanálisis, Universidad de Los Andes, Mérida, Venezuela
| | - Thayded Villasmil
- Postgrado Interdisciplinario de Química, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela
| | - Alexis Peña
- Postgrado Interdisciplinario de Química, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela
| | - Alfredo Usubillaga
- Instituto de Investigaciones, Facultad de Farmacia y Bioanálisis, Universidad de Los Andes, Mérida, Venezuela
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Scher JM, Schinkovitz A, Zapp J, Wang Y, Franzblau SG, Becker H, Lankin DC, Pauli GF. Structure and anti-TB activity of trachylobanes from the liverwort Jungermannia exsertifolia ssp. cordifolia. JOURNAL OF NATURAL PRODUCTS 2010; 73:656-663. [PMID: 20353194 DOI: 10.1021/np900806j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In the critical search for new antituberculosis lead compounds, bryophytes represent a largely untapped resource of chemically diverse structures. From the liverwort Jungermannia exsertifolia subsp. cordifolia, 11 new trachylobane diterpene derivatives, as well as three known compounds, were isolated. Their structures were elucidated by spectroscopic means, and full (1)H NMR spin analysis of one model compound confirmed the relative configurational assignments of the congeners. Four of the isolates exhibited noticeable activity against virulent Mycobacterium tuberculosis H(37)Rv with minimal inhibitory concentrations of 61-24 microg/mL. This finding suggests that bryophytes in general and trachylobanes in particular deserve further attention in the search for new antimycobacterial leads.
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Affiliation(s)
- Jochen M Scher
- Pharmakognosie und Analytische Phytochemie, Universität des Saarlandes, Saarbrücken, Germany.
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Morris BD, Charlet LD, Foster SP. Isolation of Three Diterpenoid Acids from Sunflowers, as Oviposition Stimulants for the Banded Sunflower Moth, Cochylis hospes. J Chem Ecol 2008; 35:50-7. [DOI: 10.1007/s10886-008-9567-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2008] [Revised: 09/24/2008] [Accepted: 11/04/2008] [Indexed: 11/29/2022]
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Ungur N, Grinco M, Kulciţki V, Barba A, Bîzîcci T, Vlad PF. Isolation of Ent-Kaur-16-En-19-Oic and Ent-Trachiloban-19-Oic Acids from the Sunflower Helianthus Annuus L.Dry Waste. CHEMISTRY JOURNAL OF MOLDOVA 2008. [DOI: 10.19261/cjm.2008.03(2).01] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A relatively simple method for isolation of the mixture of ent-kaur-16-en-19-oic (1) and ent-trachiloban-19-oic (2) acids from dry waste of sunflower processing has been elaborated, and it has been shown that the waste can serve as an accessible source of ent-kauranic and ent-trachilobanic diterpenoids.
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Ambrosio SR, Tirapelli CR, da Costa FB, de Oliveira AM. Kaurane and pimarane-type diterpenes from the Viguiera species inhibit vascular smooth muscle contractility. Life Sci 2006; 79:925-33. [PMID: 16780894 DOI: 10.1016/j.lfs.2006.05.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Revised: 04/10/2006] [Accepted: 05/02/2006] [Indexed: 10/24/2022]
Abstract
The research, development and use of natural products as therapeutic agents, especially those derived from plants, have been increasing in recent years. Despite the fact that plants provide a rich source of novel biologically active compounds, only a small percentage have been phytochemically investigated and studied for their medical potential. Viguiera is a genus that belongs to the family Asteraceae and to the sunflower tribe Heliantheae, which is widespread mostly in Mexico and in other areas of the Andes and upland areas of Brazil. A review on the secondary metabolites pointed out that sesquiterpene lactones and diterpenes, of the kaurane and pimarane-type, are the main compounds produced by these plants. Some reports have shown that kaurane- and pimarane-type diterpenes exert several biological activities such as anti-inflammatory action, antimicrobial and antispasmodic activities. Kaurenoic and pimaradienoic acids, which are the main secondary metabolites isolated by our research group from the roots of Viguiera robusta and V. arenaria, respectively, have been evaluated on vascular smooth muscle contractility. We showed that these diterpenoids are able to inhibit the vascular contractility mainly by blocking extracellular Ca(2+) influx. Additionally, in this review we discuss the structure-activity relationship of the diterpenes regarding their inhibitory activity on vascular contractility.
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Affiliation(s)
- Sergio R Ambrosio
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto - Universidade de São Paulo (USP), Ribeirão Preto, Brazil
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Monsalve LN, Rosselli S, Bruno M, Baldessari A. Enzyme-Catalysed Transformations ofent-Kaurane Diterpenoids. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400862] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Morris BD, Foster SP, Grugel S, Charlet LD. ISOLATION OF THE DITERPENOIDS, ENT-KAURAN-16?-OL AND ENT-ATISAN-16?-OL, FROM SUNFLOWERS, AS OVIPOSITION STIMULANTS FOR THE BANDED SUNFLOWER MOTH, Cochylis hospes. J Chem Ecol 2005; 31:89-102. [PMID: 15839482 DOI: 10.1007/s10886-005-0976-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Two diterpenoid alcohols, ent-kauran-16alpha-ol (1) and ent-atisan-16alpha-ol (2), were isolated from pre bloom (R3-R4 stage) sunflower heads as oviposition stimulants for the banded sunflower moth, Cochylis hospes. Fractionation of a sunflower head extract, by normal-phase flash column chromatography, resulted in an early eluting fraction exhibiting significant activity in an egg-laying bioassay. Compounds 1 and 2, along with ent-trachyloban-19-oic acid (3) and ent-kaur-16-en-19-oic acid (4), were isolated as the major components of this fraction and identified by their NMR and mass spectra. The purified compounds were individually tested for ovipositional activity in dose-response bioassays. In these bioassays, compounds 1 and 2 gave linear dose responses, with increasing numbers of eggs laid as the dosage of either increased. Compounds 3 and 4 failed to stimulate significant egglaying at any of the dosages tested. A factorial design bioassay, using compounds 1 and 2, showed that 1 was relatively more stimulatory than 2, and that there was no synergistic effect on oviposition when the two compounds were combined.
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Affiliation(s)
- Bruce D Morris
- Department of Entomology, North Dakota State University, Fargo, North Dakota 58105, USA.
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Supudompol B, Chaowasku T, Kingfang K, Burud K, Wongseripipatana S, Likhitwitayawuid K. A New Pimarane fromMitrephora Tomentosa. Nat Prod Res 2004; 18:387-90. [PMID: 15214493 DOI: 10.1080/14786410310001643902] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A new diterpenoid named (-)-8beta-hydroxypimar-15-en-18-oic acid was isolated, along with (-)-kaur-16-en-19-oic acid, 13,14-dihydrooropheic acid and beta-sitosterol, from the bark of Mitrephora tomentosa.
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Affiliation(s)
- Butsarakham Supudompol
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Hernández-Terrones MG, Aguilar MI, King-Diaz B, Lotina-Hennsen B. Interference of methyl trachyloban-19-oate ester with CF0 of spinach chloroplast H+-ATPase. Arch Biochem Biophys 2003; 418:93-7. [PMID: 13679087 DOI: 10.1016/s0003-9861(03)00227-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In isolated spinach chloroplasts, low concentrations (I(50)=14 microM) of methyl trachyloban-19-oate ester inhibited ATP synthesis and coupled electron transport as well as light-activated membrane-bound Mg(2+)-ATPase activity. Basal (-Pi) and uncoupled electron transport and heat-activated Ca(2+)-dependent ATPase activity of isolated coupling factor proteins were unaffected by methyl trachyloban-19-oate. Thylakoids partially stripped of coupled factor by EDTA were unable to accumulate protons in the light. However, increasing concentrations of methyl trachyloban-19-oate ester restored this ability. It is concluded that the methyl trachyloban-19-oate ester effects result from blocking proton transport through the CF(0) channel. Methyl trachyloban-19-oate ester exhibited non-competitive kinetics with DCCD and triphenyltin. These results suggest that the natural products, DCCD and triphenyltin, access inhibition sites in CF(0). The K(i) is 75 microM.
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Zgoda-Pols JR, Freyer AJ, Killmer LB, Porter JR. Antimicrobial diterpenes from the stem bark of Mitrephora celebica. Fitoterapia 2002; 73:434-8. [PMID: 12165345 DOI: 10.1016/s0367-326x(02)00124-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Four diterpenes were isolated from the stem bark of Mitrephora celebica through bioassay-guided fractionation. Ent-trachyloban-19-oic acid (1) and ent-kaur-16-en-19-oic acid (2) were identified as the compounds responsible for the antimicrobial activity of the plant against methicillin-resistant Staphylococcus aureus and Mycobacterium smegmatis. 8(14),15-pimaradien-18-oic acid (3) and 7,15-pimaradien-18-oic acid (4) were isolated from the same fraction and were inactive against the microorganisms.
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Affiliation(s)
- J R Zgoda-Pols
- Graduate Program in Pharmacognosy, Department of Chemistry and Biochemistry, University of the Sciences in Philadelphia, 600 South 43rd Street, PA Philadelphia 19104-4495, USA
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Rezende MC, Urzua A, Bortoluzzi AJ, Vásquez L. Variation of the antimicrobial activity of Pseudognaphalium vira vira (Asteraceae): isolation and X-ray structure of ent-3beta-hydroxy-16-kauren-19-oic acid. JOURNAL OF ETHNOPHARMACOLOGY 2000; 72:459-464. [PMID: 10996286 DOI: 10.1016/s0378-8741(00)00239-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The antimicrobial properties of the resinous exudate from twigs and leaves of a population of Pseudognaphalium vira vira were re-examined against five Gram positive bacteria. The observed decrease in the antimicrobial activity might reflect a change in the diterpenoid composition of the exudate. The title compound 2 was isolated in substantial amount, together with ent-16-kauren-19-oic acid (1), and its structure determined by X-ray diffraction analysis.
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Affiliation(s)
- M C Rezende
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile.
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Toyota M, Wada T, Fukumoto K, Ihara M. Total Synthesis of (±)-Methyl Atis-16-en-19-oate via Homoallyl−Homoallyl Radical Rearrangement. J Am Chem Soc 1998. [DOI: 10.1021/ja9739042] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahiro Toyota
- Contribution from the Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Toshihiro Wada
- Contribution from the Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Keiichiro Fukumoto
- Contribution from the Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Masataka Ihara
- Contribution from the Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan
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Meragelman KM, Espinar LA, Sosa VE. New Sesquiterpene Lactones and Other Constituents from Helianthuspetiolaris. JOURNAL OF NATURAL PRODUCTS 1998; 61:105-107. [PMID: 9548838 DOI: 10.1021/np9701384] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Three new sesquiterpene lactones, 11alpha,13-dihydroxydehidrocostuslactone (1), the unusual 5, 10-epoxygermacranolide 4,15-anhydrohelivypolide (2), and 3-methoxy-1,2-anhydridoniveusin A (4), together with the 5,10-epoxygermacranolide helivypolide, four known 3,10-furanoheliangolides, and five known kaurane- and trachylobane-type diterpenes, have been isolated from Helianthus petiolaris.
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Affiliation(s)
- KM Meragelman
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-UNC, Agencia Postal 4, Casilla 61, 5000 Córdoba, Argentina
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