1
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Fu J, Liu X, Zhang M, Liu J, Li S, Jiang B, Wu L. Di-Isatropolone C, a Spontaneous Isatropolone C Dimer Derivative with Autophagy Activity. Molecules 2024; 29:1477. [PMID: 38611756 PMCID: PMC11013608 DOI: 10.3390/molecules29071477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Isatropolone C from Streptomyces sp. CPCC 204095 features a fused cyclopentadienone-tropolone-oxacyclohexadiene tricyclic moiety in its structure. Herein, we report an isatropolone C dimer derivative, di-isatropolone C, formed spontaneously from isatropolone C in methanol. Notably, the structure of di-isatropolone C resolved by NMR reveals a newly formed cyclopentane ring to associate the two isatropolone C monomers. The configurations of four chiral carbons, including a ketal one, in the cyclopentane ring are assigned using quantum NMR calculations and DP4+ probability. The plausible molecular mechanism for di-isatropolone C formation is proposed, in which complex dehydrogenative C-C bond coupling may have happened to connect the two isatropolone C monomers. Like isatropolone C, di-isatropolone C shows the biological activity of inducing autophagy in HepG2 cells.
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Affiliation(s)
| | | | | | | | | | - Bingya Jiang
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (J.F.); (X.L.); (M.Z.); (J.L.); (S.L.)
| | - Linzhuan Wu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (J.F.); (X.L.); (M.Z.); (J.L.); (S.L.)
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2
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Pasdaran A, Zare M, Hamedi A, Hamedi A. A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application. Chem Biodivers 2023; 20:e202300561. [PMID: 37471105 DOI: 10.1002/cbdv.202300561] [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: 04/19/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/21/2023]
Abstract
Natural pigments are important sources for the screening of bioactive lead compounds. This article reviewed the chemistry and therapeutic potentials of over 570 colored molecules from plants, fungi, bacteria, insects, algae, and marine sources. Moreover, related biological activities, advanced extraction, and identification approaches were reviewed. A variety of biological activities, including cytotoxicity against cancer cells, antioxidant, anti-inflammatory, wound healing, anti-microbial, antiviral, and anti-protozoal activities, have been reported for different pigments. Considering their structural backbone, they were classified as naphthoquinones, carotenoids, flavonoids, xanthones, anthocyanins, benzotropolones, alkaloids, terpenoids, isoprenoids, and non-isoprenoids. Alkaloid pigments were mostly isolated from bacteria and marine sources, while flavonoids were mostly found in plants and mushrooms. Colored quinones and xanthones were mostly extracted from plants and fungi, while colored polyketides and terpenoids are often found in marine sources and fungi. Carotenoids are mostly distributed among bacteria, followed by fungi and plants. The pigments isolated from insects have different structures, but among them, carotenoids and quinone/xanthone are the most important. Considering good manufacturing practices, the current permitted natural colorants are: Carotenoids (canthaxanthin, β-carotene, β-apo-8'-carotenal, annatto, astaxanthin) and their sources, lycopene, anthocyanins, betanin, chlorophyllins, spirulina extract, carmine and cochineal extract, henna, riboflavin, pyrogallol, logwood extract, guaiazulene, turmeric, and soy leghemoglobin.
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Affiliation(s)
- Ardalan Pasdaran
- Department of Pharmacognosy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Zare
- Department of Pharmacognosy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Student research committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Azar Hamedi
- School of Agriculture, Shiraz University, Shiraz, Iran
| | - Azadeh Hamedi
- Department of Pharmacognosy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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3
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Hou A, Dickschat JS. Labelling studies in the biosynthesis of polyketides and non-ribosomal peptides. Nat Prod Rep 2023; 40:470-499. [PMID: 36484402 DOI: 10.1039/d2np00071g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering: 2015 to 2022In this review, we discuss the recent advances in the use of isotopically labelled compounds to investigate the biosynthesis of polyketides, non-ribosomally synthesised peptides, and their hybrids. Also, we highlight the use of isotopes in the elucidation of their structures and investigation of enzyme mechanisms. The biosynthetic pathways of selected examples are presented in detail to reveal the principles of the discussed labelling experiments. The presented examples demonstrate that the application of isotopically labelled compounds is still the state of the art and can provide valuable information for the biosynthesis of natural products.
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Affiliation(s)
- Anwei Hou
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, West 7th Avenue No. 32, 300308 Tianjin, China.,Institute of Microbiology, Jiangxi Academy of Sciences, Changdong Road No. 7777, 330096 Nanchang, China
| | - Jeroen S Dickschat
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany.
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4
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Machino K, Sakakibara Y, Osada K, Ochiai T, Uraki Y, Shigetomi K. Pseudomonas bohemica strain ins3 eliminates antibacterial hinokitiol from its culture broth. Biosci Biotechnol Biochem 2023; 87:236-239. [PMID: 36367540 DOI: 10.1093/bbb/zbac180] [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: 09/07/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Abstract
A bacterial strain, Pseudomonas bohemica strain ins3 was newly isolated as a resistant strain against high concentrations of hinokitiol. This strain was revealed not only to show resistance but also completely remove this compound from its culture broth. In addition, its mechanism was revealed to be independent of conventional aromatic dioxygenases, ie catechol-1,2- or 2,3-dioxygenases.
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Affiliation(s)
- Ken Machino
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | | | - Kota Osada
- School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Takahiro Ochiai
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Yasumitsu Uraki
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Kengo Shigetomi
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
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5
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Chen Q, Lan P, Tan S, Banwell MG. The Palladium-Catalyzed Glycosylation of Halotropones. Org Lett 2023; 25:384-388. [PMID: 36606750 DOI: 10.1021/acs.orglett.2c04099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A range of mono- and disaccharides, including glucose derivative 10, has been cleanly coupled, in the presence of a Pd catalyst, with various halogenated and structurally distinctive tropones, including "parent" compound 11, to afford the corresponding α- and β-anomeric forms of the tropolone glycosides, e.g., 12 and 13, respectively. Varying the ligand used influences the anomer distribution significantly and such that either the α- or β-form predominates. Notable chemo- and regioselectivities are observed when dihalogenated troponoids are employed as coupling partners.
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Affiliation(s)
- Qi Chen
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong510632, China
| | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong510632, China
| | - Shen Tan
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong510632, China
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong510632, China.,Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University,Zhanjiang, Guangdong524023, China
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6
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Li L, Zhang M, Li S, Jiang B, Zhang J, Yu L, Liu H, Wu L. Isatropolone/isarubrolone C m from Streptomyces with biological activity of inducing incomplete autophagy. J Antibiot (Tokyo) 2022; 75:702-708. [PMID: 36224376 DOI: 10.1038/s41429-022-00575-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/17/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022]
Abstract
Isatropolones/isarubrolones are Streptomyces secondary metabolites featuring a tropolone ring in the pentacyclic scaffolds of these molecules. They are able to induce complete autophagy in human HepG2 cells. Here, methyl isatropolones (1-2) and isarubrolone (3) are identified from Streptomyces CPCC 204095. They all have a methyl tropolone ring in the pentacyclic scaffold of these molecules resolved by MS and NMR spectra. Biological activity assay indicates that isatropolone Cm (1) and isarubrolone Cm (3) induce incomplete autophagy in human HepG2 cells.
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Affiliation(s)
- Linli Li
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
- Department of Clinical Pharmacy, The Third Hospital of Hebei Medical University, 050051, Shijiazhuang, People's Republic of China
| | - Miaoqing Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Shufen Li
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China.
| | - Bingya Jiang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Jingpu Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Liyan Yu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Hongyu Liu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Linzhuan Wu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China.
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7
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[4 + 3] Cycloaddition of ketenimines with furocarbenoids: Divergent and efficient synthesis of fused cycloheptatriene and tropone scaffolds. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Jiang M, Guo H, Wu Q, Yuan S, Liu L. Two New Picoline-Derived Meroterpenoids with Anti-Acetylcholinesterase Activity from Ascidian-Derived Fungus Amphichorda felina. Molecules 2022; 27:molecules27165076. [PMID: 36014315 PMCID: PMC9416303 DOI: 10.3390/molecules27165076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/06/2022] [Accepted: 08/08/2022] [Indexed: 11/30/2022] Open
Abstract
Amphichoterpenoids D (1) and E (2), two new picoline-derived meroterpenoids with a rare 6/6/6 tricyclic pyrano[3,2-c]pyridinyl-γ-pyranone scaffold, were isolated from the ascidian-derived fungus Amphichorda felina SYSU-MS7908. Their structures, including the absolute configurations, were established by extensive spectroscopic methods (1D and 2D NMR and high-resolution mass spectrometry) and ECD calculations. Compounds 1 and 2 showed anti-acetylcholinesterase (anti-AChE) activities with IC50 values of 12.5 μM and 11.6 μM, respectively. The binding interactions between 1, 2, and AChE were investigated using molecular docking analyses.
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Affiliation(s)
- Minghua Jiang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Heng Guo
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Qilin Wu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Siwen Yuan
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
- Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai 519082, China
- Correspondence:
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9
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Wang B, He B, Chen T, Li H, Chen L, Chen Y, Tian K, Yang K, Shen D, Yan W, Ye Y. Discovery of Tropolone Stipitaldehyde as a Potential Agent for Controlling Phytophthora Blight and Its Action Mechanism Research. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8693-8703. [PMID: 35793537 DOI: 10.1021/acs.jafc.2c03163] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The fermentation of endophytic Nigrospora chinensis GGY-3 resulted in the isolation of tropolone stipitaldehyde (1), which exhibited broad-spectrum inhibition activity against fungi and bacteria, especially against Phytophthora capsici, with an EC50 value of 0.83 μg/mL and Xanthomonas oryzae pv. oryzicola, with a minimum inhibitory concentration value of 4.0 μg/mL. The in vitro and in vivo assays demonstrated that 1 had a significant protective effect on P. capsici. Furthermore, 1 inhibited the spore germination of P. capsici and damaged the plasma membrane structure. As observed by SEM and TEM, after exposure to 1, mycelia exhibited swelling, shrunken, branch-increasing phenomena, cell wall and membrane damage, and disordered content. Transcriptome analysis revealed that 1 might affect starch and sucrose metabolism and fatty acid biosynthesis by suppressing the expression of genes relevant to cell wall synthetases and cell membrane-associated genes. These findings indicate that 1 may be a potential agrochemical fungicide for controlling phytophthora blight.
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Affiliation(s)
- Biao Wang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Bo He
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Tianyu Chen
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Hao Li
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Liyifan Chen
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Yiliang Chen
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Kailin Tian
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Kun Yang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Danyu Shen
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
| | - Wei Yan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
- The Sanya Institute of Nanjing Agricultural University, Sanya 572000, P. R. China
| | - Yonghao Ye
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
- The Sanya Institute of Nanjing Agricultural University, Sanya 572000, P. R. China
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10
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Yan Y, Yu Z, Zhong W, Hou X, Tao Q, Cao M, Wang L, Cai X, Rao Y, Huang SX. Characterization of Multifunctional and Non-stereoselective Oxidoreductase RubE7/IstO, Expanding the Functional Diversity of the Flavoenzyme Superfamily. Angew Chem Int Ed Engl 2022; 61:e202200189. [PMID: 35191152 DOI: 10.1002/anie.202200189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 12/23/2022]
Abstract
Flavin-dependent enzymes enable a broad range of redox transformations and generally act as monofunctional and stereoselective catalysts. Herein, we report the investigation of a multifunctional and non-stereoselective FMN-dependent oxidoreductase RubE7 from the rubrolone biosynthetic pathway. Our study outlines a single RubE7-catalysed sequential reduction of three spatially distinct bonds in a tropolone ring and a reversible double-bond reduction and dehydrogenation. The crystal structure of IstO (a RubE7 homologue) with 2.0 Å resolution reveals the location of the active site at the interface of two monomers, and the size of active site is large enough to permit both flipping and free rotation of the substrate, resulting in multiple nonselective reduction reactions. Molecular docking and site mutation studies demonstrate that His106 is oriented towards the substrate and is important for the reverse dehydrogenation reaction.
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Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Wei Zhong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.,University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaodong Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Qiaoqiao Tao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Minhang Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Xiaofeng Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
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11
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Liu J, Liu X, Fu J, Jiang B, Li S, Wu L. Dihydroisatropolone C from Streptomyces and Its Implication in Tropolone-Ring Construction for Isatropolone Biosynthesis. Molecules 2022; 27:molecules27092882. [PMID: 35566231 PMCID: PMC9099902 DOI: 10.3390/molecules27092882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023] Open
Abstract
Isatropolones/isarubrolones are actinomycete secondary metabolites featuring a tropolone-ring in their structures. From the isatropolone/isarubrolone producer Streptomyces sp. CPCC 204095, 7,12-dihydroisatropolone C (H2ITC) is discovered and identified as a mixture of two interchangeable diastereomers differing in the C-6 configuration. As a major metabolite in the mycelial growth period of Streptomyces sp. CPCC 204095, H2ITC can be oxidized spontaneously to isatropolone C (ITC), suggesting H2ITC is the physiological precursor of ITC. Characterization of H2ITC makes us propose dihydrotropolone-ring construction in the biosynthesis of isatropolones.
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12
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Romaniszyn M, Sieroń L, Albrecht Ł. 5-Substituted-furan-2(3 H)-ones in [8 + 2]-Cycloaddition with 8,8-Dicyanoheptafulvene. J Org Chem 2022; 87:5296-5302. [PMID: 35349288 PMCID: PMC9016758 DOI: 10.1021/acs.joc.2c00101] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
This study demonstrates
the use of organocatalytic Brønsted
base activation of 5-substituted-furan-2(3H)-ones
to generate 2π-components for the diastereoselective [8 + 2]-cycloaddition
involving 8,8-dicyanoheptafulvene as an 8π-component. The use
of dienolates in a higher-order cycloaddition reaction leads to the
formation of biologically relevant polycyclic products bearing a γ-butyrolactone
structural motif, thus broadening the synthetic potential of Brønsted
base activated higher-order cycloadditions.
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Affiliation(s)
- Marta Romaniszyn
- Institute of Organic Chemistry, Department of Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Łódź, Poland
| | - Lesław Sieroń
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Department of Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Łódź, Poland
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13
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Yan Y, Yu Z, Zhong W, Hou X, Tao Q, Cao M, Wang L, Cai X, Rao Y, Huang S. Characterization of Multifunctional and Non‐stereoselective Oxidoreductase RubE7/IstO, Expanding the Functional Diversity of the Flavoenzyme Superfamily. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Wei Zhong
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
- University of the Chinese Academy of Sciences Beijing 100049 China
| | - Xiaodong Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Wuxi 214122 China
| | - Qiaoqiao Tao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Minhang Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Xiaofeng Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Wuxi 214122 China
| | - Sheng‐Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
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14
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Schmidt S, Kildgaard S, Guo H, Beemelmanns C, Poulsen M. The chemical ecology of the fungus-farming termite symbiosis. Nat Prod Rep 2022; 39:231-248. [PMID: 34879123 PMCID: PMC8865390 DOI: 10.1039/d1np00022e] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Indexed: 01/19/2023]
Abstract
Covering: September 1972 to December 2020Explorations of complex symbioses have often elucidated a plethora of previously undescribed chemical compounds that may serve ecological functions in signalling, communication or defence. A case in point is the subfamily of termites that cultivate a fungus as their primary food source and maintain complex bacterial communities, from which a series of novel compound discoveries have been made. Here, we summarise the origins and types of 375 compounds that have been discovered from the symbiosis over the past four decades and discuss the potential for synergistic actions between compounds within the complex chemical mixtures in which they exist. We go on to highlight how vastly underexplored the diversity and geographic distribution of the symbiosis is, which leaves ample potential for natural product discovery of compounds of both ecological and medical importance.
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Affiliation(s)
- Suzanne Schmidt
- Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark.
| | - Sara Kildgaard
- Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark.
| | - Huijuan Guo
- Leibniz Institute for Natural Product Research and Infection Biology e.V., Hans-Knöll-Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology e.V., Hans-Knöll-Institute (HKI), Beutenbergstraße 11a, 07745 Jena, Germany
| | - Michael Poulsen
- Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark.
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15
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Pyta K, Skrzypczak N, Ruszkowski P, Bartl F, Przybylski P. Regioselective approach to colchiceine tropolone ring functionalization at C(9) and C(10) yielding new anticancer hybrid derivatives containing heterocyclic structural motifs. J Enzyme Inhib Med Chem 2022; 37:597-605. [PMID: 35067138 PMCID: PMC8788354 DOI: 10.1080/14756366.2022.2028782] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The influence of base type, temperature, and solvent on regioselective C(9)/C(10) “click” modifications within the tropolone ring of colchiceine (2) is investigated. New ether derivatives of 2, bearing alkyne, azide, vinyl, or halide aryl groups enable assembly of the alkaloid part with heterocycles or important biomolecules such as saccharides, geldanamycin or AZT into hybrid scaffolds by dipolar cycloaddition (CuAAC) or Heck reaction. Compared to colchicine (1) or colchiceine (2), ether congeners, as e.g. 3e [IC50s(3e) ∼ 0.9 nM], show improved or similar anticancer effects, whereby the bulkiness of the substituents and the substitution pattern of the tropolone proved to be essential. Biological studies reveal that expanding the ether arms by terminal basic heterocycles as quinoline or pyridine, decreases the toxicity in HDF cells at high anticancer potency (IC50s ∼ 1–2 nM). Docking of ether and hybrid derivatives into the colchicine pocket of αGTP/β tubulin dimers reveals a relationship between the favourable binding mode and the attractive anticancer potency.
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Affiliation(s)
- Krystian Pyta
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| | | | - Piotr Ruszkowski
- Department of Pharmacology, Poznan University of Medical Sciences, Poznan, Poland
| | - Franz Bartl
- Lebenswissenschaftliche Fakultät, Institut für Biologie, Biophysikalische Chemie Humboldt-Universität zu Berlin Invalidenstraße 42, Berlin, Germany
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
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16
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Gan D, Zhu L, Zhang XR, Li CZ, Wang CY, Cai L, Ding ZT. Penaloidines A and B: two unprecedented pyridine alkaloids from Penicillium sp. KYJ-6. Org Chem Front 2022. [DOI: 10.1039/d1qo01879e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Penaloidines A (1) and B (2), a pair of epimers, unprecedented meroterpenoid pyridine alkaloids possessing a tetrahydrofuro[3,2-c][2,7]naphthyridinyl scaffold, were characterized from Penicillium sp. KYJ-6. Their structures were elucidated by spectroscopic...
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17
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Park JS, Ko K, Kim SH, Lee JK, Park JS, Park K, Kim MR, Kang K, Oh DC, Kim SY, Yumnam S, Kwon HC, Shin J. Tropolone-Bearing Sesquiterpenes from Juniperus chinensis: Structures, Photochemistry and Bioactivity. JOURNAL OF NATURAL PRODUCTS 2021; 84:2020-2027. [PMID: 34236881 DOI: 10.1021/acs.jnatprod.1c00321] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The tropolone-bearing sesquiterpenes juniperone A (1) and norjuniperone A (2) were isolated from the folk medicinal plant Juniperus chinensis, and their structures were determined by a combination of spectroscopic and crystallographic methods. Photojuniperones A1 (3) and A2 (4), bearing bicyclo[3,2,0]heptadienones derived from tropolone, were photochemically produced and structurally identified by spectroscopic methods. Predicted by the machine learning-based assay, 1 significantly inhibited the action of tyrosinase. The new compounds also inhibited lipid accumulation and enhanced the extracellular glycerol excretion.
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Affiliation(s)
- Jae Sung Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Keebeom Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seong-Hwan Kim
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Jae Kyun Lee
- Neuro-Medicine, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Jin-Soo Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Mi Ri Kim
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Kyungsu Kang
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sun Yeou Kim
- Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Silvia Yumnam
- Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Hak Cheol Kwon
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 25451, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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18
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Wang L, Yu Z, Guo X, Huang JP, Yan Y, Huang SX, Yang J. Bisaspochalasins D and E: Two Heterocycle-Fused Cytochalasan Homodimers from an Endophytic Aspergillus flavipes. J Org Chem 2021; 86:11198-11205. [PMID: 33855851 DOI: 10.1021/acs.joc.1c00425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two heterocycle-fused cytochalasan homodimers, bisaspochalasins D (1) and E (2), were isolated from an endophytic Aspergillus flavipes. Their chemical structures were elucidated using a combination of HRESIMS, NMR, theoretical calculations, and crystallographic techniques. Bisaspochalasin D (1) is dimerized by the first reported naturally occurring triple heterobridged 3,8-dioxa-6-azabicyclo[3.2.1]octane framework, while bisaspochalasin E (2) employs a pyrrole ring as the linking moiety. Possible dimerization mechanisms of bisaspochalasins D and E were proposed. The bioassay screening revealed that bisaspochalasin D showed cytotoxic activities against five cancer cell lines (HL-60, SMMC-7721, A-549, MCF-7, and SW-480) with IC50 values ranging from 4.45 to 22.99 μM. Additionally, bisaspochalasin D exhibited neurotrophic activities in a PC12 cell-based assay. At a concentration of 10 μM, bisaspochalasin D can promote neurite growth by inducing a differentiation rate of 12.52% for PC12 cells.
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Affiliation(s)
- Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.,State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Zhiyin Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiaowei Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jian-Ping Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.,State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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19
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Chu B, Mo X, Chen Z, Zhang M, Liang Y, Hu H, Liu D, Liang F. Synthesis and anticancer activity of mixed ligand 3d metal complexes. Metallomics 2021; 13:6184049. [PMID: 33755727 DOI: 10.1093/mtomcs/mfab011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/13/2021] [Accepted: 03/17/2021] [Indexed: 11/13/2022]
Abstract
Our previously reported copper-based complexes of tropolone show nice antitumor effects, but with high cytotoxicity to normal cells, which is presumably caused by copper ions. Here, we managed to achieve this challenge by using other 3D metals to replace copper ions. We thus prepared four mononuclear 3D metal complexes [M(phen)L2] (M = Mn, Co, Ni, and Zn for 1-4, respectively). Complexes 1 and 4 show selectivity on different cancer cell lines with much lower cytotoxicity to normal cells than cisplatin. The anticancer effects for complexes 2 and 3 on the tested cancer cell lines are very poor. It revealed a tuning effect of different metal ions on the anticancer activities with those for Mn(II) and Zn(II) being much higher than those for Co(II) and Ni(II) in this system. Among them, complex 1 presents a best anticancer effect on HeLa cells comparable to cisplatin. It overcame the afore-mentioned shortage of high cytotoxicity to normal cells for the reported Cu(II) complexes. It revealed from the mechanistic studies that complex 1 mainly induces apoptosis through the mitochondrial pathway by increasing intracellular reactive oxygen species, releasing Ca2+, and activating Caspase 9 and proapoptotic gene Bax.
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Affiliation(s)
- Bo Chu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Xiyu Mo
- Department of Food and Chemical Engineering, Liuzhou Institute of Technology, Liuzhou 545616, P. R. China
| | - Zilu Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Mingling Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Yuning Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Huancheng Hu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Dongcheng Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Fupei Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China.,Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China
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20
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Yu M, Luo J, Luo D, He Q, Yan Y, Ji X, Huang SX. Discovery and heterologous production of sarubicins and quinazolinone C-glycosides with protecting activity for cardiomyocytes. Org Chem Front 2021. [DOI: 10.1039/d1qo00470k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Glycosylated natural products and their derivatives are important pharmaceutical agents.
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Affiliation(s)
- Mingming Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Dan Luo
- College of Traditional Chinese Medicine
- Yunnan University of Traditional Chinese Medicine
- Kunming 650500
- China
| | - Qiang He
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Xu Ji
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education
- Yunnan University
- Kunming 650091
- China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
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21
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Duan Y, Petzold M, Saleem‐Batcha R, Teufel R. Bacterial Tropone Natural Products and Derivatives: Overview of their Biosynthesis, Bioactivities, Ecological Role and Biotechnological Potential. Chembiochem 2020; 21:2384-2407. [PMID: 32239689 PMCID: PMC7497051 DOI: 10.1002/cbic.201900786] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 04/02/2020] [Indexed: 12/05/2022]
Abstract
Tropone natural products are non-benzene aromatic compounds of significant ecological and pharmaceutical interest. Herein, we highlight current knowledge on bacterial tropones and their derivatives such as tropolones, tropodithietic acid, and roseobacticides. Their unusual biosynthesis depends on a universal CoA-bound precursor featuring a seven-membered carbon ring as backbone, which is generated by a side reaction of the phenylacetic acid catabolic pathway. Enzymes encoded by separate gene clusters then further modify this key intermediate by oxidation, CoA-release, or incorporation of sulfur among other reactions. Tropones play important roles in the terrestrial and marine environment where they act as antibiotics, algaecides, or quorum sensing signals, while their bacterial producers are often involved in symbiotic interactions with plants and marine invertebrates (e. g., algae, corals, sponges, or mollusks). Because of their potent bioactivities and of slowly developing bacterial resistance, tropones and their derivatives hold great promise for biomedical or biotechnological applications, for instance as antibiotics in (shell)fish aquaculture.
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Affiliation(s)
- Ying Duan
- Faculty of BiologyUniversity of Freiburg79104FreiburgGermany
| | - Melanie Petzold
- Faculty of BiologyUniversity of Freiburg79104FreiburgGermany
| | | | - Robin Teufel
- Faculty of BiologyUniversity of Freiburg79104FreiburgGermany
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22
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Yan Y, Yang J, Wang L, Xu D, Yu Z, Guo X, Horsman GP, Lin S, Tao M, Huang SX. Biosynthetic access to the rare antiarose sugar via an unusual reductase-epimerase. Chem Sci 2020; 11:3959-3964. [PMID: 34122866 PMCID: PMC8152690 DOI: 10.1039/c9sc05766h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Rubrolones, isatropolones, and rubterolones are recently isolated glycosylated tropolonids with notable biological activity. They share similar aglycone skeletons but differ in their sugar moieties, and rubterolones in particular have a rare deoxysugar antiarose of unknown biosynthetic provenance. During our previously reported biosynthetic elucidation of the tropolone ring and pyridine moiety, gene inactivation experiments revealed that RubS3 is involved in sugar moiety biosynthesis. Here we report the in vitro characterization of RubS3 as a bifunctional reductase/epimerase catalyzing the formation of TDP-d-antiarose by epimerization at C3 and reduction at C4 of the key intermediate TDP-4-keto-6-deoxy-d-glucose. These new findings not only explain the biosynthetic pathway of deoxysugars in rubrolone-like natural products, but also introduce RubS3 as a new family of reductase/epimerase enzymes with potential to supply the rare antiarose unit for expanding the chemical space of glycosylated natural products. Rubrolones, isarubrolones, and rubterolones are recently isolated glycosylated tropolonids with notable biological activity.![]()
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Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Dongdong Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Xiaowei Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Geoff P Horsman
- Department of Chemistry & Biochemistry, Wilfrid Laurier University Waterloo ON N2L 3C5 Canada
| | - Shuangjun Lin
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Meifeng Tao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
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23
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Yang FX, Huang JP, Liu Z, Wang Z, Yang J, Tang J, Yu Z, Yan Y, Kai G, Huang SX. Benwamycins A-G, Trialkyl-Substituted Benzene Derivatives from a Soil-Derived Streptomyces. JOURNAL OF NATURAL PRODUCTS 2020; 83:111-117. [PMID: 31904958 DOI: 10.1021/acs.jnatprod.9b00903] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Seven new trialkyl-substituted benzene derivatives named benwamycins A-G (1-7), together with three known congeners, 8-10, were isolated from culture broth of the soil-derived Streptomyces sp. KIB-H1471. Their structures were elucidated by using 1D and 2D NMR analyses in combination with HRESIMS data. The absolute configurations of 1-9 were determined by chemical conversion and comparison of circular dichroism spectra and confirmed for 1 by single-crystal X-ray crystallography. Compounds 6 and 7 have a unique γ-pyrone-like ring on one side chain. Compounds 2 and 6 inhibited human T cell proliferation with IC50 values of 14.3 and 12.5 μM, respectively, without obvious cytotoxicity for naïve human T cells. Compounds 3 and 6 could weakly enhance insulin-stimulated glucose uptake.
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Affiliation(s)
- Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jian-Ping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Zhixiang Liu
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Zhiyan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Jun Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Guoyin Kai
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
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24
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He X, Wang Y, Luo RH, Yang LM, Wang L, Guo D, Yang J, Deng Y, Zheng YT, Huang SX. Dimeric Pyranonaphthoquinone Glycosides with Anti-HIV and Cytotoxic Activities from a Soil-Derived Streptomyces. JOURNAL OF NATURAL PRODUCTS 2019; 82:1813-1819. [PMID: 31310115 DOI: 10.1021/acs.jnatprod.9b00022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Eight new sulfur-bridged pyranonaphthoquinone (PNQ) dimers, naquihexcins C-J (1-8), a new PNQ monomer, naquihexcin K (10), and three known analogues (9, 11, and 12) were isolated from Streptomyces sp. KIB3133. The new structures were elucidated by interpretation of spectroscopic data. Dimer 4 was synthesized via a cascade SN2 reactions between two monomers and sodium sulfide, an approach motivated by the proposed biosynthetic pathway of dimeric pyranonaphthoquinones. Naquihexcin E (3) exhibited moderate HIV-1 inhibitory activity. Naquihexcins C (1), E (3), and I (7) showed inhibitory effects against two tumor cell lines (HL-60 and MCF-7) with IC50 values ranging from 1.4 to 16.1 μM.
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Affiliation(s)
- Xin He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
- Key Laboratory of Standardization of Chinese Herbal Medicine, College of Pharmacy , Chengdu University of Traditional Chinese Medicine , Chengdu 611137 , People's Republic of China
| | - Yongjiang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Rong-Hua Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences , Kunming Institute of Zoology, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Liu-Meng Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences , Kunming Institute of Zoology, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Dale Guo
- Key Laboratory of Standardization of Chinese Herbal Medicine, College of Pharmacy , Chengdu University of Traditional Chinese Medicine , Chengdu 611137 , People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Yun Deng
- Key Laboratory of Standardization of Chinese Herbal Medicine, College of Pharmacy , Chengdu University of Traditional Chinese Medicine , Chengdu 611137 , People's Republic of China
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences , Kunming Institute of Zoology, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204 , People's Republic of China
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25
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Chen X, Luo X, Fan M, Zeng W, Yang C, Wu J, Zhao C, Zhang Y, Zhao P. Endophytic fungi from the branches of Camellia taliensis (W. W. Smith) Melchior, a widely distributed wild tea plant. World J Microbiol Biotechnol 2019; 35:113. [PMID: 31289918 DOI: 10.1007/s11274-019-2686-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 06/29/2019] [Indexed: 10/26/2022]
Abstract
Camellia taliensis (W. W. Smith) Melchior is a wild tea plant endemic from the west and southwest of Yunnan province of China to the north of Myanmar and is used commonly to produce tea by the local people of its growing areas. Its chemical constituents are closely related to those of C. sinensis var. assamica, a widely cultivated tea plant. In this study, the α diversity and phylogeny of endophytic fungi in the branches of C. taliensis were explored for the first time. A total of 160 fungal strains were obtained and grouped into 42 species from 29 genera, which were identified based on rDNA internal transcribed spacer sequence analysis. Diversity analysis showed that the endophytic fungal community of the branches of C. taliensis had high species richness S (42), Margalef index D' (8.0785), Shannon-Wiener index H' (2.8494), Simpson diversity index DS (0.8891), PIE index (0.8947) and evenness Pielou index J (0.7623) but a low dominant index λ (0.1109). By contrast, that in the branches of C. taliensis had abundant species and high species evenness. Diaporthe tectonigena, Acrocalymma sp. and Colletotrichum magnisporum were the dominant endophytic fungi. The phylogenetic tree was established by maximum parsimony analysis, and the 11 orders observed for endophytic fungi belonging to Ascomycota and Basidiomycota were grouped into 4 classes.
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Affiliation(s)
- Xiaoxue Chen
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Xulu Luo
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Miaomiao Fan
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Weilin Zeng
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Chongren Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Jianrong Wu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Changlin Zhao
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming, 650224, People's Republic of China
| | - Yingjun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
| | - Ping Zhao
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, People's Republic of China.
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26
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Li L, Li S, Jiang B, Zhang M, Zhang J, Yang B, Li L, Yu L, Liu H, You X, Hu X, Wang Z, Li Y, Wu L. Isarubrolones Containing a Pyridooxazinium Unit from Streptomyces as Autophagy Activators. JOURNAL OF NATURAL PRODUCTS 2019; 82:1149-1154. [PMID: 31070914 DOI: 10.1021/acs.jnatprod.8b00857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Isarubrolones are bioactive polycyclic tropoloalkaloids from Streptomyces. Three new isarubrolones (2-4), together with the known isarubrolone C (1) and isatropolones A (5) and C (6, 3( R)-hydroxyisatropolone A), were identified from Streptomyces sp. CPCC 204095. The structures of these compounds were determined using a combination of mass spectrometry, 1D and 2D NMR spectroscopy, and ECD. Compounds 3 and 4 feature a pyridooxazinium unit, which is rarely seen in natural products. Compound 6 could conjugate with amino acids or amines to expand the structural diversity of isarubrolones with a pentacyclic or hexacyclic core. Importantly, 1 and 3-6 were found to induce complete autophagy.
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Affiliation(s)
- Linli Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Shufen Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Bingya Jiang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Miaoqing Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Jingpu Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Beibei Yang
- Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Li Li
- Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Liyan Yu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Hongyu Liu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Xuefu You
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Xinxin Hu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Zhen Wang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Yuhuan Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Linzhuan Wu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
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27
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Zhang Z, Cao P, Shang NN, Yang J, Wang L, Yan Y, Huang SX. Naphthomycin-derived macrolactams with two new carbon skeletons from endophytic Streptomyces. Org Chem Front 2019. [DOI: 10.1039/c8qo01107a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cytotoxic ansamycin class of natural products with two new carbon skeletons was isolated and characterized from endophytic Streptomyces.
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Affiliation(s)
- Zhouxin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Pei Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Ning-Ning Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
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28
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Guo X, Wang J, Su C, Liu C, Ma XY, Yu Z, Li J, Wang X, Xiang W, Huang SX. A unique spiro-β-triazinedione-γ-hydantoin type alkaloid with antiviral activity against tobacco mosaic virus from Streptomyces gamaensis. Org Chem Front 2019. [DOI: 10.1039/c9qo00742c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemical investigation of a soil actinomycete strain Streptomyces gamaensis NEAU-Gz11 led to the isolation of three alkaloids 1–3 with antiviral activity.
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29
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Secondary Metabolites of Endophytic Actinomycetes: Isolation, Synthesis, Biosynthesis, and Biological Activities. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 108 2019; 108:207-296. [DOI: 10.1007/978-3-030-01099-7_3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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30
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Abstract
This review on natural products containing a tropolonoid motif highlights analytical methods applied for structural identification and biosynthetic pathway analysis, the ecological context and the pharmacological potential of this compound class.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
| | - David Roman
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute
- 07745 Jena
- Germany
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31
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Endophytic Actinomycetes from Tea Plants ( Camellia sinensis): Isolation, Abundance, Antimicrobial, and Plant-Growth-Promoting Activities. BIOMED RESEARCH INTERNATIONAL 2018; 2018:1470305. [PMID: 30519568 PMCID: PMC6241348 DOI: 10.1155/2018/1470305] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/11/2018] [Indexed: 11/17/2022]
Abstract
Endophytic actinomycetes are a promising source of novel metabolites with diverse biological activities. Tea plants (Camellia sinensis) produce arsenals of phytochemicals, which are linked to a number of medicinal and nutritional properties. However, a systematic investigation into the abundance and diversity of cultivated actinomycetes residing in tea plants has not been performed. In this study, a total of 46 actinobacteria were recovered from leaf, stem, and root samples of 15 tea cultivars collected in Fujian province, China. Their abundance and diversity were shown to be influenced by both the genotypes and tissue types of tea plants. Based on 16S RNA sequence analysis, these isolates were taxonomically grouped into 11 families and 13 genera, including Streptomyces, Actinomadura, Kribbella, Nocardia, Kytococcus, Leifsonia, Microbacterium, Micromonospora, Mobilicoccus, Mycobacterium, Nocardiopsis, Piscicoccus, and Pseudonocardia. The genus Streptomyces was most prevalent whereas rare genera, Mobilicoccus and Piscicoccus, were reported for the first time to occur as plant endophytes. PCR screening of polyketide synthase genes (PKS-I and PKS-II) and nonribosomal peptide synthetase genes (NRPS), along with antimicrobial assays against a set of bacterial and fungal pathogens, showed that endophytic actinomycetes associated with tea plants have a high potential for producing antimicrobial metabolites. Furthermore, indole acetic acid (IAA) production and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activities were recorded in 93.5% and 21.7% of all isolates, respectively. Overall, these results indicate that endophytic actinomycetes from tea plants represent a valuable source of bioactive metabolites with antibacterial, antifungal, and plant-growth-promoting properties.
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32
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Yang FX, Hou GX, Luo J, Yang J, Yan Y, Huang SX. New phenoxazinone-related alkaloids from strain Streptomyces sp. KIB-H1318. J Antibiot (Tokyo) 2018; 71:1040-1043. [PMID: 30218038 DOI: 10.1038/s41429-018-0099-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/23/2018] [Accepted: 08/28/2018] [Indexed: 02/07/2023]
Abstract
Chemical investigation of a strain Streptomyces sp. KIB-H1318 isolated from soil sample led to the discovery of three new phenoxazinone-related alkaloids 1-3, as well as two known analogs exfoliazone (4) and viridobrunnine A (5). Their structures were determined on the basis of extensive spectroscopic analysis. The antimicrobial activity and cytotoxicity of the isolates were assayed. Exfoliazone and viridobrunnine A exhibited minor antibacterial activity against Escherichia coli ATCC 8099, Bacillus subtilis ATCC 6633, and Staphylococcus aureus ATCC 6538. Compound 2 exhibited low cytotoxicity against two human cancer cell lines HeLa and SW480 with the IC50 values of 36.8 and 37.8 μM, respectively.
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Affiliation(s)
- Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China.,University of the Chinese Academy of Sciences, 100049, Beijing, China
| | - Guan-Xiong Hou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China.
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33
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Guo H, Benndorf R, König S, Leichnitz D, Weigel C, Peschel G, Berthel P, Kaiser M, Steinbeck C, Werz O, Poulsen M, Beemelmanns C. Expanding the Rubterolone Family: Intrinsic Reactivity and Directed Diversification of PKS-derived Pyrans. Chemistry 2018; 24:11319-11324. [PMID: 29846024 DOI: 10.1002/chem.201802066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/26/2018] [Indexed: 12/20/2022]
Abstract
We characterized two key biosynthetic intermediates of the intriguing rubterolone family (tropolone alkaloids) that contain a highly reactive pyran moiety (in equilibrium with the hydrolyzed 1,5-dione form) and undergo spontaneous pyridine formation in the presence of primary amines. We exploited the intrinsic reactivity of the pyran moiety and isolated several new rubterolone derivatives, two of which contain a unique thiazolidine moiety. Three rubterolone derivatives were chemically modified with fluorescence and biotin tags using peptide coupling and click reaction. Overall, eight derivatives were fully characterized by HRMS/MS and 1D and 2D NMR spectroscopy and their antimicrobial, cytotoxic, anti-inflammatory and antiparasitic activities evaluated.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Stefanie König
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Daniel Leichnitz
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Christiane Weigel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Gundela Peschel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Patrick Berthel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Parasite Chemotherapy, Socinstraße 57, 4002, Basel, Switzerland.,University of Basel, Petersplatz 1, 4003, Basel, Switzerland
| | - Christoph Steinbeck
- Institute for Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstr. 8, 07743, Jena, Germany
| | - Oliver Werz
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Michael Poulsen
- Centre for Social Evolution, University of Copenhagen, 2100, Copenhagen East, Denmark
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
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34
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Glycosylated piericidins from an endophytic streptomyces with cytotoxicity and antimicrobial activity. J Antibiot (Tokyo) 2018; 71:672-676. [PMID: 29651143 DOI: 10.1038/s41429-018-0051-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/19/2018] [Accepted: 03/07/2018] [Indexed: 12/15/2022]
Abstract
Two new glycosylated piericidins, glucopiericidinol A3 (1) and 7-demethyl-glucopiericidin A (2), along with four known analogs were isolated from the culture broth of Streptomyces sp. KIB-H1083. The chemical structures of new compounds were elucidated by spectroscopic analyses. Their cytotoxicity on HL-60, SMMC-772, A-549, MCF-7, and SW480 cell lines, as well as antimicrobial activities was evaluated. The results showed that glucopiericidin A (4) has potent cytotoxicity against HL-60, SMMC-772, A-549, and MCF-7 cell lines with IC50 values of 0.34, 0.65, 0.60, and 0.50 μM, respectively. For the antimicrobial activity, piericidin A (6) showed most powerful inhibitory activities against Xanthomonas oryzae pv. oryzicola, and Penicillium decumbens.
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35
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Liu H, Zhu G, Fan Y, Du Y, Lan M, Xu Y, Zhu W. Natural Products Research in China From 2015 to 2016. Front Chem 2018; 6:45. [PMID: 29616210 PMCID: PMC5869933 DOI: 10.3389/fchem.2018.00045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 02/19/2018] [Indexed: 12/12/2022] Open
Abstract
This review covers the literature published by chemists from China during the 2015-2016 on natural products (NPs), with 1,985 citations referring to 6,944 new compounds isolated from marine or terrestrial microorganisms, plants, and animals. The emphasis is on 730 new compounds with a novel skeleton or/and significant bioactivity, together with their source organism and country of origin.
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Affiliation(s)
- Haishan Liu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Guoliang Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yaqin Fan
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yuqi Du
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Mengmeng Lan
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yibo Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Weiming Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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36
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Abstract
Exploration of structurally novel natural products greatly facilitates the discovery of biologically active pharmacophores that are biologically validated starting points for the development of new drugs. Endophytes that colonize the internal tissues of plant species, have been proven to produce a large number of structurally diverse secondary metabolites. These molecules exhibit remarkable biological activities, including antimicrobial, anticancer, anti-inflammatory and antiviral properties, to name but a few. This review surveys the structurally diverse natural products with new carbon skeletons, unusual ring systems, or rare structural moieties that have been isolated from endophytes between 1996 and 2016. It covers their structures and bioactivities. Biosynthesis and/or total syntheses of some important compounds are also highlighted. Some novel secondary metabolites with marked biological activities might deserve more attention from chemists and biologists in further studies.
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Affiliation(s)
- Han Gao
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, China.
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37
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Xiong ZJ, Huang J, Yan Y, Wang L, Wang Z, Yang J, Luo J, Li J, Huang SX. Isolation and biosynthesis of labdanmycins: four new labdane diterpenes from endophyticStreptomyces. Org Chem Front 2018. [DOI: 10.1039/c8qo00085a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gene cluster of two new labdanmycins was identified from an endophyticStreptomyces. The P450 enzyme LabE was confirmed to oxidize C-20 methyl of the biosynthetic intermediate3to afford labdanmycins.
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Affiliation(s)
- Zi-Jun Xiong
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jianping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Zhiyan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jie Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
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38
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Charris-Molina A, Castillo JC, Macías M, Portilla J. One-Step Synthesis of Fully Functionalized Pyrazolo[3,4-b]pyridines via Isobenzofuranone Ring Opening. J Org Chem 2017; 82:12674-12681. [PMID: 29125772 DOI: 10.1021/acs.joc.7b02471] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel series of fully substituted pyrazolo[3,4-b]pyridines 4 has been prepared in a regioselective manner by the microwave-assisted reaction between N-substituted 5-aminopyrazoles 1 and 3-(3-oxo-2-benzofuran-1(3H)-ylidene)pentane-2,4-dione (2). This is the second reported example of a cyclocondensation reaction using substrate 2 as a 1,3-bis-electrophilic reagent. Remarkably, this synthesis offers functionalized products with acetyl and carboxyl groups in one step, in good yields, and with short reaction times. Additionally, the cyclization intermediate 3 was isolated, allowing us to postulate a mechanism for this reaction, which is initiated via isobenzofuranone ring opening of 2 in a Michael-type reaction. The structures of the products and regioselectivity of the reactions were determined on the basis of NMR measurements and X-ray diffraction. For this new reaction using substrate 2, the optimal reaction conditions and its scope were investigated.
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Affiliation(s)
- Andrés Charris-Molina
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Juan-Carlos Castillo
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Mario Macías
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
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39
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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2016. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:1047-1072. [PMID: 29078723 DOI: 10.1080/10286020.2017.1391229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
The new natural products reported in peer-reviewed articles in 2016 in journals with good reputations were reviewed and analyzed. The advances that Asian research groups made in the field of natural products chemistry in 2016 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on structural classification.
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Affiliation(s)
- Yan-Fei Liu
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Shi-Shan Yu
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
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40
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Yang R, Yang J, Wang L, Huang JP, Xiong Z, Luo J, Yu M, Yan Y, Huang SX. Lorneic Acid Analogues from an Endophytic Actinomycete. JOURNAL OF NATURAL PRODUCTS 2017; 80:2615-2619. [PMID: 28990780 DOI: 10.1021/acs.jnatprod.7b00056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Our natural products discovery program utilizes endophytic actinomycetes associated with plants and employs biological assays and HPLC-based metabolite profiles as the preliminary screen to identify strains of interest, followed by large-scale fermentation and isolation, leading to new and/or bioactive natural products. Six new trialkyl-substituted aromatic acids, namely, lorneic acids E-J (1-6), together with two known analogues (7 and 8), were isolated and identified from the culture extract of Streptomyces sp. KIB-H1289, an endophytic actinomycete obtained from the inner tissue of the bark of Betula mandshurica Nakai. The structures were characterized by interpretation of their spectroscopic data, mainly 1D and 2D NMR. Among them, compound 5 contains a unique disulfide bond that is presumably derived from N-acetylcysteine. All isolated metabolites were evaluated for their inhibitory activity on tyrosinase.
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Affiliation(s)
- Ruimin Yang
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Li Wang
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Zijun Xiong
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Mingming Yu
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
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41
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Li G, Lou HX. Strategies to diversify natural products for drug discovery. Med Res Rev 2017; 38:1255-1294. [PMID: 29064108 DOI: 10.1002/med.21474] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/18/2017] [Accepted: 09/28/2017] [Indexed: 12/11/2022]
Abstract
Natural product libraries contain specialized metabolites derived from plants, animals, and microorganisms that play a pivotal role in drug discovery due to their immense structural diversity and wide variety of biological activities. The strategies to greatly extend natural product scaffolds through available biological and chemical approaches offer unique opportunities to access a new series of natural product analogues, enabling the construction of diverse natural product-like libraries. The affordability of these structurally diverse molecules has been a crucial step in accelerating drug discovery. This review provides an overview of various approaches to exploit the diversity of compounds for natural product-based drug development, drawing upon a series of examples to illustrate each strategy.
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Affiliation(s)
- Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.,Department of Natural Products Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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42
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Wang L, Yang J, Kong LM, Deng J, Xiong Z, Huang J, Luo J, Yan Y, Hu Y, Li XN, Li Y, Zhao Y, Huang SX. Natural and Semisynthetic Tigliane Diterpenoids with New Carbon Skeletons from Euphorbia dracunculoides as a Wnt Signaling Pathway Inhibitor. Org Lett 2017; 19:3911-3914. [PMID: 28703597 DOI: 10.1021/acs.orglett.7b01813] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li Wang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Yang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ling-Mei Kong
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jun Deng
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zijun Xiong
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianping Huang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jianying Luo
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yijun Yan
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yikao Hu
- College
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Xiao-Nian Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yan Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yong Zhao
- College
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Sheng-Xiong Huang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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43
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Guo H, Benndorf R, Leichnitz D, Klassen JL, Vollmers J, Görls H, Steinacker M, Weigel C, Dahse HM, Kaster AK, de Beer ZW, Poulsen M, Beemelmanns C. Isolation, Biosynthesis and Chemical Modifications of Rubterolones A-F: Rare Tropolone Alkaloids from Actinomadura sp. 5-2. Chemistry 2017; 23:9338-9345. [PMID: 28463423 DOI: 10.1002/chem.201701005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Indexed: 12/15/2022]
Abstract
The discovery of six new, highly substituted tropolone alkaloids, rubterolones A-F, from Actinomadura sp. 5-2, isolated from the gut of the fungus-growing termite Macrotermes natalensis is reported. Rubterolones were identified by using fungus-bacteria challenge assays and a HRMS-based dereplication strategy, and characterised by NMR and HRMS analyses and by X-ray crystallography. Feeding experiments and subsequent chemical derivatisation led to a first library of rubterolone derivatives (A-L). Genome sequencing and comparative analyses revealed their putative biosynthetic pathway, which was supported by feeding experiments. This study highlights how gut microbes can present a prolific source of secondary metabolites.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Daniel Leichnitz
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Jonathan L Klassen
- Molecular and Cell Biology, University of Connecticut, 91 North Eagleville Road, Storrs, CT, 06269-3125, USA
| | - John Vollmers
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Braunschweig, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstraße 8, 07743, Jena, Germany
| | - Matthias Steinacker
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Christiane Weigel
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Hans-Martin Dahse
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Anne-Kristin Kaster
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Braunschweig, Germany
| | - Z Wilhelm de Beer
- Department of Microbiology and Plant Pathology, Forestry and Agriculture Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Michael Poulsen
- Centre for Social Evolution, University of Copenhagen, 2100, Copenhagen East, Denmark
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
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44
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Cai X, Shi YM, Pöhlmann N, Revermann O, Bahner I, Pidot SJ, Wesche F, Lackner H, Büchel C, Kaiser M, Richter C, Schwalbe H, Stinear TP, Zeeck A, Bode HB. Structure and Biosynthesis of Isatropolones, Bioactive Amine-Scavenging Fluorescent Natural Products from Streptomyces Gö66. Angew Chem Int Ed Engl 2017; 56:4945-4949. [PMID: 28371116 DOI: 10.1002/anie.201701223] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Indexed: 01/09/2023]
Abstract
The natural products isatropolone A-C (1-3) were reisolated from Streptomyces Gö66, with 1 and 3 showing potent activity against Leishmania donovani. They contain a rare tropolone ring derived from a type II polyketide biosynthesis pathway. Their biosynthesis was elucidated by labeling experiments, analysis of the biosynthesis gene cluster, its partial heterologous expression, and structural characterization of various intermediates. Owing to their 1,5-diketone moiety, they can react with ammonia, amines, lysine, and lysine-containing peptides and proteins, which results in the formation of a covalent bond and subsequent pyridine ring formation. Their fluorescence properties change upon amine binding, enabling the simple visualization of reacted amines including proteins.
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Affiliation(s)
- Xiaofeng Cai
- Merck Stiftungsprofessur für Molekulare Biotechnologie, Fachbereich Biowissenschaften, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany
| | - Yi-Ming Shi
- Merck Stiftungsprofessur für Molekulare Biotechnologie, Fachbereich Biowissenschaften, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany
| | - Nicole Pöhlmann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany
| | - Ole Revermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany
| | - Isabel Bahner
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany
| | - Sacha J Pidot
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Australia
| | - Frank Wesche
- Merck Stiftungsprofessur für Molekulare Biotechnologie, Fachbereich Biowissenschaften, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany
| | - Helmut Lackner
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany
| | - Claudia Büchel
- Institute of Molecular Biosciences, Goethe-Universität Frankfurt, Germany
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Parasite Chemotherapy, Basel, Switzerland.,University of Basel, Switzerland
| | - Christian Richter
- Institut für Organische Chemie und Chemische Biologie, Zentrum für Biomolekulare Magnetische Resonanz, Goethe-Universität Frankfurt, Germany
| | - Harald Schwalbe
- Institut für Organische Chemie und Chemische Biologie, Zentrum für Biomolekulare Magnetische Resonanz, Goethe-Universität Frankfurt, Germany
| | - Timothy P Stinear
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Australia
| | - Axel Zeeck
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Germany
| | - Helge B Bode
- Merck Stiftungsprofessur für Molekulare Biotechnologie, Fachbereich Biowissenschaften, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 9, 60438, Frankfurt am Main, Germany.,Buchmann Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt, Germany
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45
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Cai X, Shi YM, Pöhlmann N, Revermann O, Bahner I, Pidot SJ, Wesche F, Lackner H, Büchel C, Kaiser M, Richter C, Schwalbe H, Stinear TP, Zeeck A, Bode HB. Struktur und Biosynthese der Isatropolone, bioaktiver und Amin-reaktiver fluoreszierender Naturstoffe aus Streptomyces
Gö66. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaofeng Cai
- Merck Stiftungsprofessur für Molekulare Biotechnologie; Fachbereich Biowissenschaften; Goethe-Universität Frankfurt; Max-von-Laue-Straße 9 60438 Frankfurt am Main Deutschland
| | - Yi-Ming Shi
- Merck Stiftungsprofessur für Molekulare Biotechnologie; Fachbereich Biowissenschaften; Goethe-Universität Frankfurt; Max-von-Laue-Straße 9 60438 Frankfurt am Main Deutschland
| | - Nicole Pöhlmann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Deutschland
| | - Ole Revermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Deutschland
| | - Isabel Bahner
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Deutschland
| | - Sacha J. Pidot
- Department of Microbiology and Immunology; The Peter Doherty Institute for Infection and Immunity; The University of Melbourne; Australien
| | - Frank Wesche
- Merck Stiftungsprofessur für Molekulare Biotechnologie; Fachbereich Biowissenschaften; Goethe-Universität Frankfurt; Max-von-Laue-Straße 9 60438 Frankfurt am Main Deutschland
| | - Helmut Lackner
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Deutschland
| | - Claudia Büchel
- Institut für Molekulare Biowissenschaften; Goethe-Universität Frankfurt; Deutschland
| | - Marcel Kaiser
- Schweizerisches Tropen- und Public Health-Institut; Parasite Chemotherapy; Basel Schweiz
- Universität Basel; Schweiz
| | - Christian Richter
- Institut für Organische Chemie und Chemische Biologie; Zentrum für Biomolekulare Magnetische Resonanz; Goethe-Universität Frankfurt; Deutschland
| | - Harald Schwalbe
- Institut für Organische Chemie und Chemische Biologie; Zentrum für Biomolekulare Magnetische Resonanz; Goethe-Universität Frankfurt; Deutschland
| | - Timothy P. Stinear
- Department of Microbiology and Immunology; The Peter Doherty Institute for Infection and Immunity; The University of Melbourne; Australien
| | - Axel Zeeck
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Deutschland
| | - Helge B. Bode
- Merck Stiftungsprofessur für Molekulare Biotechnologie; Fachbereich Biowissenschaften; Goethe-Universität Frankfurt; Max-von-Laue-Straße 9 60438 Frankfurt am Main Deutschland
- Buchmann Institute for Molecular Life Sciences (BMLS); Goethe-Universität Frankfurt; Deutschland
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46
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Yan Y, Yang J, Yu Z, Yu M, Ma YT, Wang L, Su C, Luo J, Horsman GP, Huang SX. Non-enzymatic pyridine ring formation in the biosynthesis of the rubrolone tropolone alkaloids. Nat Commun 2016; 7:13083. [PMID: 27713400 PMCID: PMC5059770 DOI: 10.1038/ncomms13083] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 09/01/2016] [Indexed: 11/16/2022] Open
Abstract
The pyridine ring is a potent pharmacophore in alkaloid natural products. Nonetheless, its biosynthetic pathways are poorly understood. Rubrolones A and B are tropolone alkaloid natural products possessing a unique tetra-substituted pyridine moiety. Here, we report the gene cluster and propose a biosynthetic pathway for rubrolones, identifying a key intermediate that accumulates upon inactivation of sugar biosynthetic genes. Critically, this intermediate was converted to the aglycones of rubrolones by non-enzymatic condensation and cyclization with either ammonia or anthranilic acid to generate the respective pyridine rings. We propose that this non-enzymatic reaction occurs via hydrolysis of the key intermediate, which possesses a 1,5-dione moiety as an amine acceptor capable of cyclization. This study suggests that 1,5-dione moieties may represent a general strategy for pyridine ring biosynthesis, and more broadly highlights the utility of non-enzymatic diversification for exploring and expanding natural product chemical space.
The biosynthesis of pyridine rings is still poorly understood. Here the authors propose a biosynthetic pathway for pyridine-containing rubrolones, which is characterized by a non-enzymatic condensation and cyclization of the pyridine moiety.
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Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Mingming Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ya-Tuan Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Can Su
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Geoffrey P Horsman
- Department of Chemistry &Biochemistry, Wilfrid Laurier University, Waterloo, Ontario, Canada N2L 3C5
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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47
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Hill RA, Sutherland A. Hot off the Press. Nat Prod Rep 2016; 33:742-6. [DOI: 10.1039/c6np90022d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A personal selection of 33 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products, such as epicochalasine A from Aspergillus flavipes.
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