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Métoyer B, Renouf E, Jourdes M, Mérillon JM, Téguo PW. Isolation of Hydrolyzable Tannins from Castanea sativa Using Centrifugal Partition Chromatography. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38359463 DOI: 10.1021/acs.jnatprod.3c00524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Castanea sativa wood is a rich source of hydrolyzable tannins, known for their diverse bioactivities. To investigate these bioactive properties further, it is crucial to isolate and characterize hydrophilic compounds effectively. To address this issue, we developed a centrifugal partition chromatography (CPC) method and applied it to an aqueous C. sativa wood extract. We determined the partition coefficients (KD) of the six major compounds using four butanol-/water-based biphasic solvent systems. Initially, we utilized the n-butanol/propanol/water (3:1:4, v/v/v) systems for the first fractionation step. Subsequently, we employed the water/methyl tert-butyl ether/butanol/acetone (8:5:3:4, v/v/v/v) system to fractionate moderately and highly hydrophilic fractions. We calculated the KD values for major compounds of the most hydrophilic fractions using the butanol/ethanol/water (4:1:5, v/v/v) and butanol/isopropanol/water (2:1:3, v/v/v) systems. In total, we isolated 23 compounds through a combination of CPC, size exclusion chromatography, and preparative HPLC. Among these compounds, six have never been previously described. We characterized them by 1D and 2D NMR experiments and high-resolution mass spectroscopy acquisitions.
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Affiliation(s)
- Benjamin Métoyer
- Polyphénols Biotech-ADERA, Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, 33882 Villenave-d'Ornon, France
| | - Elodie Renouf
- Polyphénols Biotech-ADERA, Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, 33882 Villenave-d'Ornon, France
| | - Michael Jourdes
- Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, Université de Bordeaux, 33882 Villenave-d'Ornon, France
| | - Jean-Michel Mérillon
- Polyphénols Biotech-ADERA, Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, 33882 Villenave-d'Ornon, France
- Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, Université de Bordeaux, 33882 Villenave-d'Ornon, France
| | - Pierre Waffo Téguo
- Polyphénols Biotech-ADERA, Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, 33882 Villenave-d'Ornon, France
- Unité de Recherche Œnologie, UMR 1366 INRAE, ISVV, Université de Bordeaux, 33882 Villenave-d'Ornon, France
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Divergent Synthesis of Four Monomeric Ellagitannins toward the Total Synthesis of an Oligomeric Ellagitannin, Nobotanin K. ORGANICS 2022. [DOI: 10.3390/org3030022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oligomeric ellagitannins are challenging synthetic targets due to the need for an abundant supply of their composed monomeric ellagitannins and a synthetic methodology to connect them. This work focused on the divergent synthesis of the four monomeric ellagitannins from a common intermediate as a step toward the total synthesis of nobotanin K, a class of compounds that includes oligomeric ellagitannins and were isolated in plants belonging to the Melastomataceae family. Implementing our method, the four natural products could be easily supplied, suggesting that through this novel route, the total synthesis of nobotanin K could be achieved smoothly.
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Rezende FM, Ferreira MJP, Clausen MH, Rossi M, Furlan CM. Acylated Flavonoid Glycosides are the Main Pigments that Determine the Flower Colour of the Brazilian Native Tree Tibouchina pulchra (Cham.) Cogn. Molecules 2019; 24:E718. [PMID: 30781526 PMCID: PMC6412660 DOI: 10.3390/molecules24040718] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 11/17/2022] Open
Abstract
Tibouchina pulchra (Cham.) Cogn. is a plant native to Brazil whose genus and family (Melastomataceae) are poorly studied with regards to its metabolite profile. Phenolic pigments of pink flowers were studied by ultra-performance liquid chromatography with a photodiode array detector and electrospray ionization quadrupole time-of-flight mass spectrometry. Therein, twenty-three flavonoids were identified with eight flavonols isolated by preparative high-performance liquid chromatography and analysed by one- and two-dimensional nuclear magnetic resonance. Kaempferol derivatives were the main flavonols, encompassing almost half of the detected compounds with different substitution patterns, such as glucoside, pentosides, galloyl-glucoside, p-coumaroyl-glucoside, and glucuronide. Concerning the anthocyanins, petunidin p-coumaroyl-hexoside acetylpentoside and malvidin p-coumaroyl-hexoside acetylpentoside were identified and agreed with previous reports on acylated anthocyanins from Melastomataceae. A new kaempferol glucoside was identified as kaempferol-(2''-O-methyl)-4'-O-α-d-glucopyranoside. Moreover, twelve compounds were described for the first time in the genus with five being new to the family, contributing to the chemical characterisation of these taxa.
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Affiliation(s)
- Fernanda Mendes Rezende
- Botany Department, Institute of Bioscience, University of São Paulo (USP), São Paulo 05508-060, Brazil.
| | | | - Mads Hartvig Clausen
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kgs. 2800 Lyngby, Denmark.
| | - Magdalena Rossi
- Botany Department, Institute of Bioscience, University of São Paulo (USP), São Paulo 05508-060, Brazil.
| | - Claudia Maria Furlan
- Botany Department, Institute of Bioscience, University of São Paulo (USP), São Paulo 05508-060, Brazil.
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Sobrinho AP, Minho AS, Ferreira LLC, Martins GR, Boylan F, Fernandes PD. Characterization of anti-inflammatory effect and possible mechanism of action of Tibouchina granulosa. ACTA ACUST UNITED AC 2017; 69:706-713. [PMID: 28271494 DOI: 10.1111/jphp.12712] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 01/26/2017] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Tibouchina granulosa, popularly known as 'quaresmeira', belong to a genus widely used in the traditional medicine as infusions from their leaves. Other species of Tibouchina are used as antibacterial, antioxidant or antileishmanial. In this work, our objectives were to investigate the biological effects of T. granulosa in models of acute inflammation. METHODS Chemical analysis showed the presence of proanthocyanidins and flavonoids. Infusions from leaves of T. granulosa (1, 3, 10, 30 or 100 mg/kg) were orally administered to mice, and the anti-inflammatory effects were evaluated by the formalin-induced licking response, inhibition of carrageenan-induced cell migration into subcutaneous air pouch (SAP) and inhibition of inflammatory mediator production in inflammatory exudate collected from SAP. KEY FINDINGS Our data indicate that tested doses of T. granulosa infusion reduced cell migration, protein extravasated to SAP and cytokine production (i.e. TNF-α and IL-10). All doses also inhibited the first and second phase of formalin-induced licking response. CONCLUSIONS Taken together, our results indicate that leaves of T. granulosa present anti-inflammatory effect and can be useful in the preparation of new phytomedicines.
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Affiliation(s)
- Andrea P Sobrinho
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Alan S Minho
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | | | - Gabriel R Martins
- Universidade Federal do Rio de Janeiro, Faculdade de Farmácia, Departamento de Produtos Naturais e Alimentos, Rio de Janeiro, Brazil
| | - Fabio Boylan
- School of Pharmacy and Pharmaceutical Sciences, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Patricia D Fernandes
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
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Ascacio-Valdés JA, Aguilera-Carbó AF, Buenrostro JJ, Prado-Barragán A, Rodríguez-Herrera R, Aguilar CN. The complete biodegradation pathway of ellagitannins by Aspergillus niger in solid-state fermentation. J Basic Microbiol 2016; 56:329-36. [PMID: 26915983 DOI: 10.1002/jobm.201500557] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 12/18/2015] [Indexed: 11/08/2022]
Abstract
Our research group has found preliminary evidences of the fungal biodegradation pathway of ellagitannins, revealing first the existence of an enzyme responsible for ellagitannins degradation, which hydrolyzes pomegranate ellagitannins and it was called ellagitannase or elagitannin acyl hydrolase. However, it is necessary to generate new and clear information in order to understand the ellagitannin degradation mechanisms. This work describes the distinctive and unique features of ellagitannin metabolism in fungi. In this study, hydrolysis of pomegranate ellagitannins by Aspergillus niger GH1 was studied by solid-state culture using polyurethane foam as support and pomegranate ellagitannins as substrate. The experiment was performed during 36 h. Results showed that ellagitannin biodegradation started after 6 h of fermentation, reaching the maximal biodegradation value at 18 h. It was observed that ellagitannase activity appeared after 6 h of culture, then, the enzymatic activity was maintained up to 24 h of culture reaching 390.15 U/L, after this period the enzymatic activity decreased. Electrophoretic band for ellagitannase was observed at 18 h. A band obtained using non-denaturing electrophoresis was identified as ellagitannase, then, a tandem analysis to reveal the ellagitannase activity was performed using Petri plate with pomegranate ellagitannins. The extracts were analyzed by HPLC/MS to evaluate ellagitannins degradation. Punicalin, gallagic acid, and ellagic acid were obtained from punicalagin. HPLC/MS analysis identified the gallagic acid as an intermediate molecule and immediate precursor of ellagic acid. The potential application of catabolic metabolism of ellagitannin hydrolysis for ellagic acid production is outlined.
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Affiliation(s)
- Juan A Ascacio-Valdés
- Department of Food Research, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo, Coahuila, México
| | - Antonio F Aguilera-Carbó
- Department of Food Science and Nutrition, Universidad Autónoma Agraria "Antonio Narro", Buenavista, Saltillo, México
| | - José J Buenrostro
- Department of Biotechnology, Universidad Autonoma Metropolitana, Unidad Iztapalapa, Saltillo, Coahuila, México
| | - Arely Prado-Barragán
- Department of Biotechnology, Universidad Autonoma Metropolitana, Unidad Iztapalapa, Saltillo, Coahuila, México
| | - Raúl Rodríguez-Herrera
- Department of Food Research, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo, Coahuila, México
| | - Cristóbal N Aguilar
- Department of Food Research, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo, Coahuila, México
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Serna DMO, Martínez JHI. Phenolics and Polyphenolics from Melastomataceae Species. Molecules 2015; 20:17818-47. [PMID: 26404220 PMCID: PMC6332314 DOI: 10.3390/molecules201017818] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/31/2015] [Accepted: 09/07/2015] [Indexed: 11/16/2022] Open
Abstract
The Melastomataceae family, the seventh largest flowering plants, has been studied in several fronts of natural product chemistry, including terpenoids, simple phenolics, flavonoids, quinones, lignans and their glycosides, as well as a vast range of tannins or polyphenols. This review concerns the phenolic and polyphenolic metabolites described in the literature for several genera of this family, the mode of isolation and purification, and the structure elucidation of these new natural products that has been achieved by extensive spectral analyses, including ESI-MS, ¹H-, (13)C-NMR spectra and two-dimensional experiments, COSY, TOCSY, J-resolved, NOESY, HMQC, DEPT, and HMBC, as well as chemical and enzymatic degradations and the chemotaxonomic meaning. Finally, a general biogenetic pathway map for ellagitannins is proposed on the bases of the most plausible free radical C-O oxidative coupling.
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Affiliation(s)
- Diana Marcela Ocampo Serna
- Grupo de Investigación en Productos Naturales y Alimentos (GIPNA), Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, Edificio 320, Oficina 2096, Ciudad Universitaria-Meléndez, Calle 13 No. 100-00, Cali 760032, Colombia.
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10, Manizales 170004, Colombia.
| | - José Hipólito Isaza Martínez
- Grupo de Investigación en Productos Naturales y Alimentos (GIPNA), Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, Edificio 320, Oficina 2096, Ciudad Universitaria-Meléndez, Calle 13 No. 100-00, Cali 760032, Colombia.
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Tracanna MI, Fortuna AM, Contreras Cárdenas AV, Marr AK, McMaster WR, Gómez-Velasco A, Sánchez-Arreola E, Hernández LR, Bach H. Anti-Leishmanial, Anti-Inflammatory and Antimicrobial Activities of Phenolic Derivatives fromTibouchina paratropica. Phytother Res 2014; 29:393-7. [DOI: 10.1002/ptr.5263] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 10/10/2014] [Accepted: 10/25/2014] [Indexed: 11/11/2022]
Affiliation(s)
- María I. Tracanna
- Facultad de Agronomía y Zootecnia; Universidad Nacional de Tucumán; Av. Roca 1900 4000 San Miguel de Tucumán Argentina
| | - Antonio M. Fortuna
- Facultad de Agronomía y Zootecnia; Universidad Nacional de Tucumán; Av. Roca 1900 4000 San Miguel de Tucumán Argentina
| | - Angel V. Contreras Cárdenas
- Department of Medicine; Division of Infectious Diseases; University of British Columbia; 2660 Oak Street Vancouver BC V6H 3Z6 Canada
- Departamento de Ciencias Químico-Biológicas; Universidad de las Américas Puebla; Santa Catarina Mártir s/n, Cholula 72810 Puebla Mexico
| | - Alexandra K. Marr
- Department of Medical Genetics; University of British Columbia; 2660 Oak Street Vancouver BC V6H 3Z6 Canada
| | - W. Robert McMaster
- Department of Medical Genetics; University of British Columbia; 2660 Oak Street Vancouver BC V6H 3Z6 Canada
| | - Anaximandro Gómez-Velasco
- Department of Medicine; Division of Infectious Diseases; University of British Columbia; 2660 Oak Street Vancouver BC V6H 3Z6 Canada
| | - Eugenio Sánchez-Arreola
- Departamento de Ciencias Químico-Biológicas; Universidad de las Américas Puebla; Santa Catarina Mártir s/n, Cholula 72810 Puebla Mexico
| | - Luis Ricardo Hernández
- Departamento de Ciencias Químico-Biológicas; Universidad de las Américas Puebla; Santa Catarina Mártir s/n, Cholula 72810 Puebla Mexico
| | - Horacio Bach
- Department of Medicine; Division of Infectious Diseases; University of British Columbia; 2660 Oak Street Vancouver BC V6H 3Z6 Canada
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dos Santos FM, de Souza MG, Crotti AEM, Martins CHG, Ambrósio SR, Veneziani RCS, e Silva MLA, Cunha WR. Evaluation of antimicrobial activity of extracts of Tibouchina candolleana (melastomataceae), isolated compounds and semi-synthetic derivatives against endodontic bacteria. Braz J Microbiol 2012; 43:793-9. [PMID: 24031892 PMCID: PMC3768843 DOI: 10.1590/s1517-83822012000200045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 03/05/2012] [Indexed: 11/24/2022] Open
Abstract
This work describes the phytochemical study of the extracts from aerial parts of Tibouchina candolleana as well as the evaluation of the antimicrobial activity of extracts, isolated compounds, and semi-synthetic derivatives of ursolic acid against endodontic bacteria. HRGC analysis of the n-hexane extract of T. candolleana allowed identification of β-amyrin, α-amyrin, and β-sitosterol as major constituents. The triterpenes ursolic acid and oleanolic acid were isolated from the methylene chloride extract and identified. In addition, the flavonoids luteolin and genistein were isolated from the ethanol extract and identified. The antimicrobial activity was investigated via determination of the minimum inhibitory concentration (MIC) using the broth microdilution method. Amongst the isolated compounds, ursolic acid was the most effective against the selected endodontic bacteria. As for the semi-synthetic ursolic acid derivatives, only the methyl ester derivative potentiated the activity against Bacteroides fragilis.
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Affiliation(s)
| | | | | | | | | | | | | | - Wilson R. Cunha
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas da Universidade de Franca, Franca, SP, Brasil
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Aguilera-Carbo A, Augur C, Prado-Barragan LA, Favela-Torres E, Aguilar CN. Microbial production of ellagic acid and biodegradation of ellagitannins. Appl Microbiol Biotechnol 2008; 78:189-99. [DOI: 10.1007/s00253-007-1276-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Accepted: 11/05/2007] [Indexed: 10/22/2022]
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10
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Aguilar CN, Rodríguez R, Gutiérrez-Sánchez G, Augur C, Favela-Torres E, Prado-Barragan LA, Ramírez-Coronel A, Contreras-Esquivel JC. Microbial tannases: advances and perspectives. Appl Microbiol Biotechnol 2007; 76:47-59. [PMID: 17530245 DOI: 10.1007/s00253-007-1000-2] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Revised: 04/14/2007] [Accepted: 04/15/2007] [Indexed: 10/23/2022]
Abstract
In the last years, tannase has been the subject of a lot of studies due to its commercial importance and complexity as catalytic molecule. Tannases are capable of hydrolyzing complex tannins, which represent the main chemical group of natural anti-microbials occurring in the plants. The general outline of this work includes information of the substrates, the enzyme, and the applications. This review considers in its introduction the concepts and history of tannase and explores scientific and technological aspects. The "advances" trace the route from the general, molecular, catalytic, and functional information obtained under close to optimal conditions for microbial production through purification, description of the enzyme properties, and the commercial applications to the "perspectives" including expression studies, regulation, and potential uses; aspects related to the progress in our understanding of tannin biodegradation are also included.
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Affiliation(s)
- Cristóbal N Aguilar
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Blvd. Venustiano Carranza and J. Cardenas s/n, Col. Republica Oriente, 25280, Saltillo, Mexico.
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Andreo MA, Ballesteros KVR, Hiruma-Lima CA, Machado da Rocha LR, Souza Brito ARM, Vilegas W. Effect of Mouriri pusa extracts on experimentally induced gastric lesions in rodents: role of endogenous sulfhydryls compounds and nitric oxide in gastroprotection. JOURNAL OF ETHNOPHARMACOLOGY 2006; 107:431-41. [PMID: 16698206 DOI: 10.1016/j.jep.2006.04.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2005] [Revised: 03/20/2006] [Accepted: 04/03/2006] [Indexed: 05/09/2023]
Abstract
Several plants are used in folk medicine to treat gastrointestinal disorders. Mouriri pusa Gardn. (Melastomataceae) is a medicinal plant commonly used in the central region of Brazil against gastric ulcer. Two organic extracts methanolic (MeOH) and dichloromethane (DCM) obtained by sequential extraction from the leaves of Mouriri pusa were evaluated for their ability to protect the gastric mucosa against injuries caused by necrotizing agents (0.3M HCl/60% EtOH, absolute ethanol, non-steroidal anti-inflammatory drug, stress and pylorus ligature) in mice and rats. The best results were obtained after pretreatment with MeOH extract whereas the DCM extract did not show the same significant antiulcerogenic activity. No acute toxicity was observed in animals treated with 5 g/kg, p.o. of MeOH extract. The mechanism involving the antiulcerogenic action of MeOH extract seemed to be related to NO generation and also suggested the effective participation of endogenous sulfhydryl group in the gastroprotective action. Phytochemical investigation of the MeOH extract of Mouriri pusa yielded tannins, flavonoids and (-)-epicatechin. The presence of these phenolic compounds probably would explain the antiulcerogenic effect of the polar extract of Mouriri pusa leaves.
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Affiliation(s)
- Marcio Adriano Andreo
- Departamento de Química Orgânica, Instituto de Química, CP 355, CEP 14801-970, UNESP, São Paulo State University, Araraquara, SP, Brasil
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Funatogawa K, Hayashi S, Shimomura H, Yoshida T, Hatano T, Ito H, Hirai Y. Antibacterial activity of hydrolyzable tannins derived from medicinal plants against Helicobacter pylori. Microbiol Immunol 2004; 48:251-61. [PMID: 15107535 DOI: 10.1111/j.1348-0421.2004.tb03521.x] [Citation(s) in RCA: 157] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Helicobacter pylori is a major etiological agent in gastroduodenal disorders. In this study, we isolated 36 polyphenols and 4 terpenoids from medicinal plants, and investigated their antibacterial activity against H. pylori in vitro. All hydrolyzable tannins tested demonstrated promising antibacterial activity against H. pylori. Monomeric hydrolyzable tannins revealed especially strong activity. Other compounds demonstrated minimal antibacterial activity with a few exceptions. A monomeric hydrolyzable tannin, Tellimagrandin I demonstrated time- and dose-dependent bactericidal activity against H. pylori in vitro. On the other hand, hydrolyzable tannins did not affect the viability of MKN-28 cells derived from human gastric epithelium. Hydrolyzable tannins, therefore, have potential as new and safe therapeutic regimens against H. pylori infection. Furthermore, we investigated effects of hydrolyzable tannins on lipid bilayer membranes. All the hydrolyzable tannins tested demonstrated dose-dependent membrane-damaging activity. However, it remains to be elucidated whether their membrane-damaging activity directly contributes to their antibacterial action.
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Affiliation(s)
- Keiji Funatogawa
- Division of Bacteriology, Department of Infection and Immunity, Jichi Medical School
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Isaza JH, Ito H, Yoshida T. Oligomeric hydrolyzable tannins from Monochaetum multiflorum. PHYTOCHEMISTRY 2004; 65:359-367. [PMID: 14751308 DOI: 10.1016/j.phytochem.2003.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Four hydrolyzable tannins, nobotanins Q, R, S, and T, were isolated from the aqueous acetone extract of the dried leaves of Monochaetum multiflorum (Melastomataceae), a plant indigenous to Colombia. Their dimeric and tetrameric structures were elucidated by spectral and chemical methods. Eight known hydrolyzable tannin monomers and eight ellagitannin oligomers characteristic of melastomataceous plants were also characterized as tannin constituents of the plant.
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Affiliation(s)
- José H Isaza
- Faculty of Pharmaceutical Sciences, Okayama University, Tsushima, Okayama 700-8530, Japan
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Ling SK, Tanaka T, Kouno I. New cyanogenic and alkyl glycoside constituents from Phyllagathis rotundifolia. JOURNAL OF NATURAL PRODUCTS 2002; 65:131-135. [PMID: 11858743 DOI: 10.1021/np010393v] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Methanolic extracts of the leaves, stems, and roots of Phyllagathis rotundifolia collected in Malaysia yielded seven galloylated cyanogenic glucosides based on prunasin, with six of these being new compounds, prunasin 2',6'-di-O-gallate (3), prunasin 3',6'-di-O-gallate (4), prunasin 4',6'-di-O-gallate (5), prunasin 2',3',6'-tri-O-gallate (6), prunasin 3',4',6'-tri-O-gallate (7), and prunasin 2',3',4',6'-tetra-O-gallate (8). Also obtained was a new alkyl glycoside, oct-1-en-3-yl alpha-arabinofuranosyl-(1-->6)-beta-glucopyranoside (9). For compounds 3-8, the galloyl groups were individually linked to the sugar moieties via ester bonds. All new structures were established on the basis of NMR and MS spectroscopic studies. In addition, prunasin (1), gallic acid and its methyl ester, beta-glucogallin, 3,6-di-O-galloyl-D-glucose, 1,2,3,6-tetra-O-galloyl-beta-D-glucose, strictinin, 6-O-galloyl-2,3-O-(S)-hexahydroxydiphenoyl-D-glucose, praecoxin B, and pterocarinin C were isolated and identified. The isolation of 1 and its galloyl derivatives (3-8) from a Melastomataceous plant are described for the first time.
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Affiliation(s)
- Sui-Kiong Ling
- Faculty of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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Isaza JH, Ito H, Yoshida T. A flavonol glycoside-lignan ester and accompanying acylated glucosides from Monochaetum multiflorum. PHYTOCHEMISTRY 2001; 58:321-327. [PMID: 11551558 DOI: 10.1016/s0031-9422(01)00247-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four acylated glycosides along with six known glycosides were isolated from the leaves of Monochaetum multiflorum. The new compounds were characterized as 4-O-(6'-O-galloyl-beta-glucopyranosyl)-cis-p-coumaric acid, 6'-O-galloylprunasin, benzyl 6'-O-galloyl-beta-glucopyranoside, and a novel diester of tetrahydroxy-mu-truxinic acid with 2 mol of hyperin (monochaetin), based on NMR and MS spectral data and chemical evidence.
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Affiliation(s)
- J H Isaza
- Faculty of Pharmaceutical Sciences, Okayama University, Tsushima, 700-8530, Okayama, Japan
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