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Pan X, Dong B, Wu Y, Gao B, Song C. Synthesis of Functionalized 4-Hydroxy Carbazoles and Carbazole Alkaloids via Ring Expansion of Indole Cyclopentanone. J Org Chem 2024; 89:8845-8850. [PMID: 38814829 DOI: 10.1021/acs.joc.4c00730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The exploration of a ring expansion reaction from indole cyclopentanone to generate a range of diversely functionalized 4-hydroxyl carbazole frameworks, representing the core structure of numerous carbazole alkaloids, has been conducted under mild reaction conditions. This approach exhibits broad functional group tolerance and moderate to good yields. The practical applicability of this strategy has been demonstrated through the concise syntheses of carbazomycins A, D, and G.
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Affiliation(s)
- Xiaolong Pan
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Boyang Dong
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yangang Wu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Beiling Gao
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Chuanjun Song
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
- Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, P. R. China
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Maimone NM, Apaza-Castillo GA, Quecine MC, de Lira SP. Accessing the specialized metabolome of actinobacteria from the bulk soil of Paullinia cupana Mart. on the Brazilian Amazon: a promising source of bioactive compounds against soybean phytopathogens. Braz J Microbiol 2024; 55:1863-1882. [PMID: 38421597 PMCID: PMC11153476 DOI: 10.1007/s42770-024-01286-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/10/2024] [Indexed: 03/02/2024] Open
Abstract
The Amazon rainforest, an incredibly biodiverse ecosystem, has been increasingly vulnerable to deforestation. Despite its undeniable importance and potential, the Amazonian microbiome has historically received limited study, particularly in relation to its unique arsenal of specialized metabolites. Therefore, in this study our aim was to assess the metabolic diversity and the antifungal activity of actinobacterial strains isolated from the bulk soil of Paullinia cupana, a native crop, in the Brazilian Amazon Rainforest. Extracts from 24 strains were subjected to UPLC-MS/MS analysis using an integrative approach that relied on the Chemical Structural and Compositional Similarity (CSCS) metric, GNPS molecular networking, and in silico dereplication tools. This procedure allowed the comprehensive understanding of the chemical space encompassed by these actinobacteria, which consists of features belonging to known bioactive metabolite classes and several unannotated molecular families. Among the evaluated strains, five isolates exhibited bioactivity against a panel of soybean fungal phytopathogens (Rhizoctonia solani, Macrophomina phaseolina, and Sclerotinia sclerotiorum). A focused inspection led to the annotation of pepstatins, oligomycins, hydroxamate siderophores and dorrigocins as metabolites produced by these bioactive strains, with potentially unknown compounds also comprising their metabolomes. This study introduces a pragmatic protocol grounded in established and readily available tools for the annotation of metabolites and the prioritization of strains to optimize further isolation of specialized metabolites. Conclusively, we demonstrate the relevance of the Amazonian actinobacteria as sources for bioactive metabolites useful for agriculture. We also emphasize the importance of preserving this biome and conducting more in-depth studies on its microbiota.
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Affiliation(s)
- Naydja Moralles Maimone
- College of Agriculture "Luiz de Queiroz", Department of Exact Sciences, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Gladys Angélica Apaza-Castillo
- College of Agriculture "Luiz de Queiroz", Department of Genetics, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Maria Carolina Quecine
- College of Agriculture "Luiz de Queiroz", Department of Genetics, University of São Paulo, Piracicaba, SP, 13418-900, Brazil
| | - Simone Possedente de Lira
- College of Agriculture "Luiz de Queiroz", Department of Exact Sciences, University of São Paulo, Piracicaba, SP, 13418-900, Brazil.
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3
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Adouane E, Mercier C, Mamelle J, Willocquet E, Intertaglia L, Burgunter-Delamare B, Leblanc C, Rousvoal S, Lami R, Prado S. Importance of quorum sensing crosstalk in the brown alga Saccharina latissima epimicrobiome. iScience 2024; 27:109176. [PMID: 38433891 PMCID: PMC10906538 DOI: 10.1016/j.isci.2024.109176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/07/2023] [Accepted: 02/06/2024] [Indexed: 03/05/2024] Open
Abstract
Brown macroalgae are colonized by diverse microorganisms influencing the physiology of their host. However, cell-cell interactions within the surface microbiome (epimicrobiome) are largely unexplored, despite the significance of specific chemical mediators in maintaining host-microbiome homeostasis. In this study, by combining liquid chromatography coupled to mass spectrometry (LC-MS) analysis and bioassays, we demonstrated that the widely diverse fungal epimicrobiota of the brown alga Saccharina latissima can affect quorum sensing (QS), a type of cell-cell interaction, as well as bacterial biofilm formation. We also showed the ability of the bacterial epimicrobiota to form and inhibit biofilm growth, as well as to activate or inhibit QS pathways. Overall, we demonstrate that QS and anti-QS compounds produced by the epimicrobiota are key metabolites in these brown algal epimicrobiota communities and highlight the importance of exploring this epimicrobiome for the discovery of new bioactive compounds, including potentially anti-QS molecules with antifouling properties.
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Affiliation(s)
- Emilie Adouane
- Muséum National d’Histoire Naturelle, Unité Molécules de Communication et Adaptation des Micro-Organismes MCAM, UMR 7245, CNRS, Sorbonne Université, 75005 Paris, France
- Sorbonne Université, CNRS, UAR 3579 Laboratoire de Biodiversité et Biotechnologies Microbiennes LBBM, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Camille Mercier
- Sorbonne Université, CNRS, UAR 3579 Laboratoire de Biodiversité et Biotechnologies Microbiennes LBBM, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Jeanne Mamelle
- Sorbonne Université, CNRS, UAR 3579 Laboratoire de Biodiversité et Biotechnologies Microbiennes LBBM, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Emma Willocquet
- Sorbonne Université, CNRS, UAR 3579 Laboratoire de Biodiversité et Biotechnologies Microbiennes LBBM, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Laurent Intertaglia
- Sorbonne Université, CNRS, Bio2Mar, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Bertille Burgunter-Delamare
- Biologie Intégrative des Modèles Marins, LBI2M (Sorbonne Université/CNRS), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Catherine Leblanc
- Biologie Intégrative des Modèles Marins, LBI2M (Sorbonne Université/CNRS), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Sylvie Rousvoal
- Biologie Intégrative des Modèles Marins, LBI2M (Sorbonne Université/CNRS), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Raphaël Lami
- Sorbonne Université, CNRS, UAR 3579 Laboratoire de Biodiversité et Biotechnologies Microbiennes LBBM, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Soizic Prado
- Muséum National d’Histoire Naturelle, Unité Molécules de Communication et Adaptation des Micro-Organismes MCAM, UMR 7245, CNRS, Sorbonne Université, 75005 Paris, France
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Li X, Wu P, Wang W, Xue J, Li H, Tan H, Wei X. Anti-MRSA Dimeric and Brominated Phenyltetracenoids Produced by Streptomyces morookaense SC1169. JOURNAL OF NATURAL PRODUCTS 2023; 86:2571-2579. [PMID: 37947788 DOI: 10.1021/acs.jnatprod.3c00788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Eleven new phenyltetracenoid polyketides, streptovertimycins U (1) and V (2), 14-bromo-streptovertidione (3), streptovertimycins W-Y (4-6), and streptovertimycins Z1-Z5 (7-11), together with the known congeners fasamycins R (12) and S (13) and accramycins A (14) and B (15), were isolated from the NaBr-supplemented rice-grown cultures of Streptomyces morookaense SC1169. Their structures were elucidated by extensive spectroscopic analysis, single-crystal X-ray diffraction analysis, and theoretical computations of ECD spectra. Compounds 1 and 2 are methylene-bridged dimers of accramycin A, and compounds 3 and 7-11 are brominated fasamycin congeners. Compounds 5 and 8-14 exhibited activity against the drug-resistant bacteria MRSA and VRE (MIC = 0.6-5.0 μg/mL), and the dimer 1 displayed activity against MRSA (MIC = 2.5 μg/mL). Compounds 6-15 showed cytotoxicity against the human carcinoma A549, HeLa, HepG2, and MCF-7 cells in the IC50 range between 1.7 and 9.2 μM.
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Affiliation(s)
- Xiaoxia Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
- School of Life Sciences, University of Chinese Academy of Sciences, Yuquanlu 19A, Beijing 100049, People's Republic of China
| | - Ping Wu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Wanfang Wang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
- School of Life Sciences, University of Chinese Academy of Sciences, Yuquanlu 19A, Beijing 100049, People's Republic of China
| | - Jinghua Xue
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Hanxiang Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Haibo Tan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Xiaoyi Wei
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
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Pulat S, Kim DA, Hillman PF, Oh DC, Kim H, Nam SJ, Fenical W. Actinoquinazolinone, a New Quinazolinone Derivative from a Marine Bacterium Streptomyces sp. CNQ-617, Suppresses the Motility of Gastric Cancer Cells. Mar Drugs 2023; 21:489. [PMID: 37755102 PMCID: PMC10532864 DOI: 10.3390/md21090489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/12/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023] Open
Abstract
A HPLC-UV guided fractionation of the culture broth of Streptomyces sp. CNQ-617 has led to the isolation of a new quinazolinone derivative, actinoquinazolinone (1), as well as two known compounds, 7-hydroxy-6-methoxy-3,4-dihydroquinazolin-4-one (2) and 7-methoxy-8-hydroxy cycloanthranilylproline (3). The interpretation of 1D, 2D NMR, and MS spectroscopic data revealed the planar structure of 1. Furthermore, compound 1 suppressed invasion ability by inhibiting epithelial-mesenchymal transition markers (EMT) in AGS cells at a concentration of 5 µM. In addition, compound 1 decreased the expression of seventeen genes related to human cell motility and slightly suppressed the signal transducer and activator of the transcription 3 (STAT3) signal pathway in AGS cells. Together, these results demonstrate that 1 is a potent inhibitor of gastric cancer cells.
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Affiliation(s)
- Sultan Pulat
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea;
| | - Da-Ae Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (D.-A.K.); (P.F.H.)
| | - Prima F. Hillman
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (D.-A.K.); (P.F.H.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea;
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea;
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea; (D.-A.K.); (P.F.H.)
| | - William Fenical
- Center of Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0204, USA
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Li X, Wu P, Li H, Xue J, Xu H, Wei X. Antibacterial and Cytotoxic Phenyltetracenoid Polyketides from Streptomyces morookaense. JOURNAL OF NATURAL PRODUCTS 2021; 84:1806-1815. [PMID: 34081476 DOI: 10.1021/acs.jnatprod.1c00208] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Formicapyridine-type racemates, streptovertidines A (1) and B (2), a 7,24-seco-fasamycin, streptovertidione (3), and the fasamycin-type streptovertimycins I-T (4-15), together with 13 known fasamycin congeners (16-28), were isolated from soil-derived Streptomyces morookaense SC1169. Their structures were elucidated by extensive spectroscopic analysis and theoretical computations of ECD spectra. The fasamycin-type compounds 5, 8-12, 14, and 15 exhibited activity against the drug-resistant bacteria MRSA and VRE (MIC: 1.25-10.0 μg/mL). All isolates, except 3, 4, 10, and 24, displayed cytotoxicity against at least one of the human carcinoma A549, HeLa, HepG2, and MCF-7 cells (IC50 < 10.0 μM), of which some were also cytotoxic to the noncancerous Vero cells. Taken together, the activity data demonstrated that the fasamycin-type compounds were more selective to the tested bacteria over the mammalian cells. Structure-activity relationship analysis suggested that chlorination at C-2 in antibacterial fasamycin-type compounds improves the activity and selectivity to the bacteria. Theoretical simulations of reaction paths and chemical reactions for conversion of 3 to 1 were carried out and supported that the pyridine ring formation in formicapyridines proceeds nonenzymatically via 1,5-dicarbonyl condensation with ammonia.
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Affiliation(s)
- Xiaoxia Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
- School of Life Sciences, University of Chinese Academy of Sciences, Yuquanlu 19A, Beijing 100049, People's Republic of China
| | - Ping Wu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Hanxiang Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Jinghua Xue
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Xiaoyi Wei
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
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7
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Yang L, Li X, Wu P, Xue J, Xu L, Li H, Wei X. Streptovertimycins A-H, new fasamycin-type antibiotics produced by a soil-derived Streptomyces morookaense strain. J Antibiot (Tokyo) 2020; 73:283-289. [PMID: 31949315 PMCID: PMC7223045 DOI: 10.1038/s41429-020-0277-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/23/2019] [Accepted: 12/27/2019] [Indexed: 12/16/2022]
Abstract
Eight new fasamycin-type polyketides, streptovertimycins A-H (1-8), were isolated from soil-derived Streptomyces morookaense SC1169 cultivated on wheat grains. Their structures were established by extensive spectroscopic analysis and theoretical computations of ECD spectra. Compounds 1-8 have a fasamycin-type pentacyclic structure featuring a 15-O-methyl group. They exhibited potent activity against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus faecium (VRE) with MIC values in the range of 0.63-5.0 μg/ml. The activity profile provided new insights into the structure-activity relationships of fasamycin-type antibiotics.
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Affiliation(s)
- Li Yang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.,University of Chinese Academy of Sciences, Yuquanlu 19A, 100049, Beijing, PR China
| | - Xiaoxia Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.,University of Chinese Academy of Sciences, Yuquanlu 19A, 100049, Beijing, PR China
| | - Ping Wu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China. .,South China Branch of Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.
| | - Jinghua Xue
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.,South China Branch of Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China
| | - Liangxiong Xu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.,School of Life Sciences, Huizhou University, Huizhou, 516001, PR China
| | - Hanxiang Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.,South China Branch of Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China
| | - Xiaoyi Wei
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Lab Building No. 2, CAS, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China. .,South China Branch of Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, PR China.
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8
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Vicente Dos Reis G, Abraham WR, Grigoletto DF, de Campos JB, Marcon J, da Silva JA, Quecine MC, de Azevedo JL, Ferreira AG, de Lira SP. Gloeosporiocide, a new antifungal cyclic peptide from Streptomyces morookaense AM25 isolated from the Amazon bulk soil. FEMS Microbiol Lett 2019; 366:5544763. [PMID: 31390020 DOI: 10.1093/femsle/fnz175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/06/2019] [Indexed: 11/14/2022] Open
Abstract
Actinobacteria are known by their ability to produce several antimicrobial compounds of biotechnological interest. Thus, in this study, we isolated and identified by partial 16S RNA sequencing ∼100 actinobacteria isolates from guarana (Paullinia cupana) bulk soil. Besides, we isolated from the actinobacteria Streptomyces morookaense AM25 a novel cyclic peptide, named gloeosporiocide, molecular formula C44H48N11O7S3 (calculated 938.2901), and characterized by the presence of cyclized cysteins to form three thiazols. The novel compound had activity against the plant pathogen Colletotrichum gloeosporioides, assayed by the paper disk diffusion method (42.7% inhibition, 0.1 mg disk-1) and by the microdilution assay (1.25 g L-1). Our results reveal the potential of the actinobacteria from the Amazon rhizospheric soils as biocontrol agents as well as producers of new compounds with antifungal activity. Thus, this work constitutes a step forward in the development of the biotechnology of actinobacteria in the production of compounds of agronomic interest.
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Affiliation(s)
- Gislâine Vicente Dos Reis
- College of Agriculture 'Luiz de Queiroz', Department of Exact Sciences, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | - Wolf-Rainer Abraham
- Chemical Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, DEU
| | - Diana Fortkamp Grigoletto
- College of Agriculture 'Luiz de Queiroz', Department of Exact Sciences, University of São Paulo, 13418-900 Piracicaba, SP, Brazil.,Chemical Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, DEU
| | - Jessica Bueno de Campos
- College of Agriculture 'Luiz de Queiroz', Department of Genetics, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | - Joelma Marcon
- College of Agriculture 'Luiz de Queiroz', Department of Genetics, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | - Jose Antonio da Silva
- College of Agriculture 'Luiz de Queiroz', Department of Genetics, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | - Maria Carolina Quecine
- College of Agriculture 'Luiz de Queiroz', Department of Genetics, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | - João Lúcio de Azevedo
- College of Agriculture 'Luiz de Queiroz', Department of Genetics, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
| | | | - Simone Possedente de Lira
- College of Agriculture 'Luiz de Queiroz', Department of Exact Sciences, University of São Paulo, 13418-900 Piracicaba, SP, Brazil
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9
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Qi D, Zou L, Zhou D, Chen Y, Gao Z, Feng R, Zhang M, Li K, Xie J, Wang W. Taxonomy and Broad-Spectrum Antifungal Activity of Streptomyces sp. SCA3-4 Isolated From Rhizosphere Soil of Opuntia stricta. Front Microbiol 2019; 10:1390. [PMID: 31316480 PMCID: PMC6609889 DOI: 10.3389/fmicb.2019.01390] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 06/03/2019] [Indexed: 11/13/2022] Open
Abstract
Actinobacteria are important producers of bioactive compounds. Extreme ecosystems cause evolution of novel secondary metabolic pathways of Actinobacteria and increase the possible discovery of new biological functions of bioactive compounds. Here, we isolated 65 Actinobacteria from rhizosphere soil samples of Opuntia stricta. An Actinobacteria strain (named SCA3-4) was screened against Fusarium oxysporum f. sp. cubense Tropical Race 4 (Foc TR4, ATCC 76255). The strain produced pink-white aerial mycelia and brown substrate mycelium on Gause No. 1 agar. Biverticillate chains of cylindrical spores were observed by scanning electron microscopy (SEM). Based on alignment of 16S rRNA sequences, a constructed phylogenetic tree showed that strain SCA3-4 shared a 99.54% similarity with Streptomyces lilacinus NRRL B-1968T. The morphological, biochemical, physiological, and molecular characteristics further indicated that strain SCA3-4 belongs to the Streptomyces sp. It can grow well on medium with the following antibiotics chloramphenicol, streptomycin, penicillin-G, gentamicin, erythromycin, nystatin or neomycin sulfate. The polymerase chain reaction (PCR) amplification of types I and II polyketide synthase genes (PKS-I and PKS-II) suggested its bioactive potential. Under treatment with 100 μg/ml of ethyl acetate extracts isolated from Streptomyces sp. SCA3-4, growth of Foc TR4 was inhibited and cell membrane was destroyed. Crude extracts also showed a broad-spectrum antifungal activity against 13 phytopathogenic fungi including Foc TR4 and displayed the lowest minimum inhibitory concentration (MIC) (0.781 μg/ml) against Colletotrichum fragariae (ATCC 58718). A total of 21 different compounds identified by gas chromatography-mass spectrometry (GC-MS) were composed of phenolic compound, pyrrolizidine, hydrocarbons, esters, and acids. Besides the known active compounds, Streptomyces sp. SCA3-4 possesses antimicrobial or other biological activities. Further attention will be paid on other compounds with no functional annotation, aiming at the discovery of new bioactive substances.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jianghui Xie
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wei Wang
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
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10
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Delong W, Yongling W, Lanying W, Juntao F, Xing Z. Design, synthesis and evaluation of 3-arylidene azetidin-2-ones as potential antifungal agents against Alternaria solani Sorauer. Bioorg Med Chem 2017; 25:6661-6673. [PMID: 29137937 DOI: 10.1016/j.bmc.2017.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/26/2017] [Accepted: 11/02/2017] [Indexed: 12/29/2022]
Abstract
A new concise and facile method was explored to synthesize a collection of new 3-arylidene azetidin-2-ones, which could be regarded as the derivatives of the hybrid scaffold of bioactive natural cinnamamide and heterocycle azetidi-2-one. The structures of the synthesized compounds were characterized by 1H, 13C NMR, and MS; and their antifungal activity were evaluated against Alternaria solani Sorauer. These antifungal data were subjected to a quantitative structure-activity relationship (QSAR) analysis using Codessa software on the basis of the results from B3LYP/6-31G(d,p) quantum calculations. The best regressive model revealed that potentially more active compounds should have low dipole moments and QC-min (minimal net atomic charge for a C atom), and high QO-max (maximal net atomic charge for an O atom) and QN-min (minimal net atomic charge for an N atom). The most potent compound 7k could lead to intracellular accumulation of reactive oxygen species, dissipation of mitochondrial transmembrane potential, and an autophagy-like cell death process in A. solani Sorauer. Taken together, these results laid the foundation for further design of improved crop-protection agents based on this hybrid scaffold.
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Affiliation(s)
- Wang Delong
- Research & Development Center of Biorational Pesticide, Shaanxi Research Center of Biopesticide Engineering & Technology, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Wu Yongling
- Research & Development Center of Biorational Pesticide, Shaanxi Research Center of Biopesticide Engineering & Technology, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Wang Lanying
- Research & Development Center of Biorational Pesticide, Shaanxi Research Center of Biopesticide Engineering & Technology, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China; College of Environment and Plant Protection, Hainan University, Haikou, Hainan 570228, China
| | - Feng Juntao
- Research & Development Center of Biorational Pesticide, Shaanxi Research Center of Biopesticide Engineering & Technology, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China.
| | - Zhang Xing
- Research & Development Center of Biorational Pesticide, Shaanxi Research Center of Biopesticide Engineering & Technology, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
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Zheng S, Zhou X, Xu S, Zhu R, Bai H, Zhang J. Synthesis and Antimicrobial Characterization of Half-Calycanthaceous Alkaloid Derivatives. Molecules 2016; 21:molecules21091207. [PMID: 27618003 PMCID: PMC6273825 DOI: 10.3390/molecules21091207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/06/2016] [Accepted: 09/06/2016] [Indexed: 11/16/2022] Open
Abstract
A total of 29 novel tetrahydropyrroloindol-based calycanthaceous alkaloid derivatives were synthesized from indole-3-acetonitrile in good yields. The synthesized compounds were evaluated against nine strains of bacteria and a wide range of plant pathogen fungi. Bioassay results revealed that majority of the compounds displayed similar or higher in vitro antimicrobial activities than the positive control. The biological activities also indicated that substituents at R₄ and R₅ significantly affect the activities. Notably, compound c4 was found to be most active among the tested calycanthaceous analogues and might be a novel potential leading compound for further development as an antifungal agent. The results could pave the way for further design and structural modification of calycanthaceous alkaloids as antimicrobial agents.
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Affiliation(s)
- Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China.
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, China.
| | - Xinping Zhou
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Shixun Xu
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Rui Zhu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China.
| | - Hongjin Bai
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Jiwen Zhang
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, China.
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12
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Huang S, Elsayed S, Lv M, Tabudravu J, Rateb M, Gyampoh R, Kyeremeh K, Ebel R, Jaspars M, Deng Z, Yu Y, Deng H. Biosynthesis of Neocarazostatin A Reveals the Sequential Carbazole Prenylation and Hydroxylation in the Tailoring Steps. ACTA ACUST UNITED AC 2015; 22:1633-42. [DOI: 10.1016/j.chembiol.2015.10.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/15/2015] [Accepted: 10/21/2015] [Indexed: 01/01/2023]
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13
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Two new anthraquinones from the soil fungus Penicillium purpurogenum SC0070. J Antibiot (Tokyo) 2015; 68:598-9. [DOI: 10.1038/ja.2015.35] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/09/2015] [Accepted: 03/16/2015] [Indexed: 11/08/2022]
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15
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Qualitative and quantitative analysis of triterpene saponins from tea seed pomace (Camellia oleifera Abel) and their activities against bacteria and fungi. Molecules 2014; 19:7568-80. [PMID: 24914901 PMCID: PMC6271494 DOI: 10.3390/molecules19067568] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/27/2014] [Accepted: 06/03/2014] [Indexed: 11/17/2022] Open
Abstract
A method using LC-ESI-IT-TOF/MS and LC/UV-ELSD was established to qualitatively analyze triterpene saponins obtained from the tea seed pomace (Camellia oleifera Abel). In addition, the quantitative analysis of oleiferasaponin A1 using LC/UV was developed. The purified total saponins did not exhibit any inhibitory effects at concentrations ranging from 0.1 to 10 mg/mL against the tested bacteria, except for Staphyloccocus aureus and Escherichia coli. By contrast, higher inhibitory activity was seen against the tested fungi, especially against Bipolaris maydis. Following treatment with an MIC value of 250 μg/mL for 24 h, the mycelial morphology was markedly shriveled in appearance or showed flattened and empty hyphae, with fractured cell walls, ruptured plasmalemma and cytoplasmic coagulation or leakage. These structural changes hindered the growth of mycelia.
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16
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Xue J, Xu L, Jiang ZH, Wei X. Two New Amides from Streptomyces michiganensis. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new amide glycoside, 3-α-glucopyranosyloxy- N-methyl-3-phenylpropanamide (1), and a new cyclodipeptide, (3 S,6 S)-3,6-bis(4-acetamidobutyl)piperazine-2,5-dione (2), were isolated from the solid culture of Streptomycetes michiganensis strain SC0642. Their structures were elucidated by spectroscopic methods.
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Affiliation(s)
- Jinghua Xue
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Liangxiong Xu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zi-Hua Jiang
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
| | - Xiaoyi Wei
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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18
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Schmidt AW, Reddy KR, Knölker HJ. Occurrence, Biogenesis, and Synthesis of Biologically Active Carbazole Alkaloids. Chem Rev 2012; 112:3193-328. [PMID: 22480243 DOI: 10.1021/cr200447s] [Citation(s) in RCA: 899] [Impact Index Per Article: 74.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Arndt W. Schmidt
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
| | - Kethiri R. Reddy
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
| | - Hans-Joachim Knölker
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
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Ling TJ, Ling WW, Chen YJ, Wan XC, Xia T, Du XF, Zhang ZZ. Antiseptic activity and phenolic constituents of the aerial parts of Vitex negundo var. cannabifolia. Molecules 2010; 15:8469-77. [PMID: 21088661 PMCID: PMC6259273 DOI: 10.3390/molecules15118469] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 11/11/2010] [Accepted: 11/15/2010] [Indexed: 11/30/2022] Open
Abstract
Four phenolics, salviaplebeiaside (1), γ-tocopherol (2), chrysosplenol-D (4), and isovitexin (5), along with α-tocoquinone (3) and β-sitosterol (6) were isolated from the aerial parts of Vitex negundo var. cannabifolia. The isolation was performed using bio-assay tracking experiments. The structures of compounds 1-5 were established by spectroscopic means. The antibacterial activities of the compounds were assessed against Escherichia coli, Bacillus subtilis, Micrococcus tetragenus and Pseudomonas fluorescens. Chrysosplenol-D (4) exhibited activities against all the four spoilage microorganisms.
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Affiliation(s)
| | | | | | | | | | | | - Zheng-Zhu Zhang
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-551-5786765; Fax: +86-551-5786765
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Xu L, He Z, Xue J, Chen X, Wei X. beta-Resorcylic acid lactones from a Paecilomyces fungus. JOURNAL OF NATURAL PRODUCTS 2010; 73:885-9. [PMID: 20429578 DOI: 10.1021/np900853n] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Six new beta-resorcylic acid lactones (1-6), named paecilomycins A-F, and five known compounds, aigilomycin B (7), zeaenol (8), aigialomycin D (9), aigialomycin F (10), and aigialospirol, were isolated from the mycelial solid culture of Paecilomyces sp. SC0924. Their structures were elucidated by extensive NMR analysis, single-crystal X-ray study, and chemical correlations. Compounds 5 and 10 exhibited antiplasmodial activity against Plasmodium falciparum line 3D7 with IC(50) values of 20.0 and 10.9 nM, respectively, and compounds 5-7 showed moderate activity against the P. falciparum line Dd2.
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Affiliation(s)
- Liangxiong Xu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
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Ling TJ, Wan XC, Ling WW, Zhang ZZ, Xia T, Li DX, Hou RY. New triterpenoids and other constituents from a special microbial-fermented tea-Fuzhuan brick tea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:4945-50. [PMID: 20307093 DOI: 10.1021/jf9043524] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Fuzhuan brick tea, a special microbial-fermented tea prepared from the leaves of Camellia sinensis var. sinensis, is a traditional beverage used in China throughout history. Phytochemical investigation of this material led to the identification of three new triterpenoids, 3beta,6alpha,13beta-trihydroxyolean-7-one (1), 3beta-acetoxy-6alpha,13beta-dihydroxyolean-7-one (2), and 3beta-O-(8-hydroxyoctanoyl)-12-oleanene (3), together with 11 known compounds, friedelin (4), beta-amyrone (5), beta-amyrin (6), alpha-spinasterone (7), alpha-spinasterol (8), 22,23-dihydro-alpha-spinasterone (9), 22,23-dihydro-alpha-spinasterol (10), alpha-phytol (11), alpha-tocopherol (12), alpha-tocoquinone (13), and caffeine (14). The structures of 1-13 were determined by spectroscopic and chemical methods. Compounds 1 and 2 are the first two examples of triterpenoids possessing a 6-hydroxy-7-one function. All of the compounds, except 6, 8, 10, 11, and 14, were isolated from tea and Camellia spp. for the first time. The antibacterial activities of 1 were assessed against some enteric pathogenic microbes. Compound 1 showed no cytotoxic activity against A-549, Bel-7402, and HCT-8 cell lines.
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Affiliation(s)
- Tie-Jun Ling
- Postdoctoral Research Station in Horticulture, Anhui Agricultural University, Hefei, People's Republic of China
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22
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Zhang H, Xue J, Wu P, Xu L, Xie H, Wei X. Polyoxygenated methyl cyclohexanoids from a terrestrial ampelomyces fungus. JOURNAL OF NATURAL PRODUCTS 2009; 72:265-269. [PMID: 19193024 DOI: 10.1021/np800667e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Seven structurally related new polyoxygenated methyl cyclohexanoids, ampelomins A-G (1-7), were isolated from the mycelial solid culture of a soil-derived Ampelomyces fungus. Their structures were determined by spectroscopic and chemical means. Ampelomins A (1), C (3), E (5), and G (7) exhibited weak activity against alpha-glucosidase with IC(50) values of 1.74-5.93 mM, and ampelomin A (1) showed moderate antibacterial activity with MIC(90) values ranging from 202.4 to 1015.9 microM. A plausible polyketide biogenetic pathway is postulated for these compounds.
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Affiliation(s)
- Huiye Zhang
- CAS Key Laboratory for Preservation and Sustainable Utilization of Plant Resources, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, People's Republic of China
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Wei HH, Xu HH, Xie HH, Xu LX, Wei XY. Sesquiterpenes and Lignans fromTephrosia vogelii. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200800272] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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