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Liu RX, Ma SF, Chen YL, Ma LF, Wang JD, Zhan ZJ. Tetrodecadazinone, a novel tetrodecamycin-pyridazinone hybrid with anti-liver fibrosis activity from Streptomyces sp. HU051. Bioorg Chem 2021; 119:105573. [PMID: 34952245 DOI: 10.1016/j.bioorg.2021.105573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 12/11/2022]
Abstract
Tetrodecadazinone (1), a novel tetrodecamycin-pyridazinone hybrid possessing a new 1,2-dimethyl-1-(2-methylnonyl)decahydronaphthalene skeleton, and 4-hydroxydihydrotetrodecamycin (2) were separated from a culture of Streptomyces sp. HU051, together with a known compound, dihydrotetrodecamycin (3). Diverse spectroscopic approaches were applied to assign the structures of 1-3, and the structure of 1 was further confirmed by single crystal X-ray diffraction analysis. Compound 1 is the first example of a pyridazinone-containing natural product. Biosynthetically, 1 is proposed to be derived from a Michael addition reaction of a PKS-derived tetrodecamycin and a piperazic-acid-derived pyridazinone. Biological evaluation revealed 1 could reduce the expressions of extracellular matrix proteins (fibronectin and collagen I) and α-smooth muscle actin (α-SMA) in transforming growth factor-β (TGF-β1)-activated LX-2 cells. Preliminary mechanism study showed 1 exerted its anti-liver fibrosis effect by regulating TGF-β1/Smad2/3 signaling pathway.
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Affiliation(s)
- Ruo-Xi Liu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Shi-Fan Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yi-Li Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Lie-Feng Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Ji-Dong Wang
- College of Life Science, Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, Huzhou University, Huzhou 313000, PR China.
| | - Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
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Activation of Secondary Metabolism in Red Soil-Derived Streptomycetes via Co-Culture with Mycolic Acid-Containing Bacteria. Microorganisms 2021; 9:microorganisms9112187. [PMID: 34835313 PMCID: PMC8622677 DOI: 10.3390/microorganisms9112187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 11/25/2022] Open
Abstract
Our previous research has demonstrated a promising capacity of streptomycetes isolated from red soils to produce novel secondary metabolites, most of which, however, remain to be explored. Co-culturing with mycolic acid-containing bacteria (MACB) has been used successfully in activating the secondary metabolism in Streptomyces. Here, we co-cultured 44 strains of red soil-derived streptomycetes with four MACB of different species in a pairwise manner and analyzed the secondary metabolites. The results revealed that each of the MACB strains induced changes in the metabolite profiles of 35–40 streptomycetes tested, of which 12–14 streptomycetes produced “new” metabolites that were not detected in the pure cultures. Moreover, some of the co-cultures showed additional or enhanced antimicrobial activity compared to the pure cultures, indicating that co-culture may activate the production of bioactive compounds. From the co-culture-induced metabolites, we identified 49 putative new compounds. Taking the co-culture of Streptomyces sp. FXJ1.264 and Mycobacterium sp. HX09-1 as a case, we further explored the underlying mechanism of co-culture activation and found that it most likely relied on direct physical contact between the two living bacteria. Overall, our results verify co-culture with MACB as an effective approach to discover novel natural products from red soil-derived streptomycetes.
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Mai PY, Le Goff G, Poupon E, Lopes P, Moppert X, Costa B, Beniddir MA, Ouazzani J. Solid-Phase Extraction Embedded Dialysis (SPEED), an Innovative Procedure for the Investigation of Microbial Specialized Metabolites. Mar Drugs 2021; 19:md19070371. [PMID: 34206861 PMCID: PMC8304039 DOI: 10.3390/md19070371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022] Open
Abstract
Solid-phase extraction embedded dialysis (SPEED technology) is an innovative procedure developed to physically separate in-situ, during the cultivation, the mycelium of filament forming microorganisms, such as actinomycetes and fungi, and the XAD-16 resin used to trap the secreted specialized metabolites. SPEED consists of an external nylon cloth and an internal dialysis tube containing the XAD resin. The dialysis barrier selects the molecular weight of the trapped compounds, and prevents the aggregation of biomass or macromolecules on the XAD beads. The external nylon promotes the formation of a microbial biofilm, making SPEED a biofilm supported cultivation process. SPEED technology was applied to the marine Streptomyces albidoflavus 19-S21, isolated from a core of a submerged Kopara sampled at 20 m from the border of a saltwater pond. The chemical space of this strain was investigated effectively using a dereplication strategy based on molecular networking and in-depth chemical analysis. The results highlight the impact of culture support on the molecular profile of Streptomyces albidoflavus 19-S21 secondary metabolites.
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Affiliation(s)
- Phuong-Y. Mai
- CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 1, Avenue de la Terrasse, 91190 Gif-sur-Yvette, France; (P.-Y.M.); (G.L.G.); (P.L.)
- Équipe “Chimie des Substances Naturelles” BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France; (E.P.); (M.A.B.)
| | - Géraldine Le Goff
- CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 1, Avenue de la Terrasse, 91190 Gif-sur-Yvette, France; (P.-Y.M.); (G.L.G.); (P.L.)
| | - Erwan Poupon
- Équipe “Chimie des Substances Naturelles” BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France; (E.P.); (M.A.B.)
| | - Philippe Lopes
- CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 1, Avenue de la Terrasse, 91190 Gif-sur-Yvette, France; (P.-Y.M.); (G.L.G.); (P.L.)
| | - Xavier Moppert
- PACIFIC BIOTECH SAS, BP 140 289, 98 701 Arue, Tahiti, French Polynesia; (X.M.); (B.C.)
| | - Bernard Costa
- PACIFIC BIOTECH SAS, BP 140 289, 98 701 Arue, Tahiti, French Polynesia; (X.M.); (B.C.)
| | - Mehdi A. Beniddir
- Équipe “Chimie des Substances Naturelles” BioCIS, CNRS, Université Paris-Saclay, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France; (E.P.); (M.A.B.)
| | - Jamal Ouazzani
- CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 1, Avenue de la Terrasse, 91190 Gif-sur-Yvette, France; (P.-Y.M.); (G.L.G.); (P.L.)
- Correspondence: ; Tel.: +33-6-82-81-65-90
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Kemung HM, Tan LTH, Khan TM, Chan KG, Pusparajah P, Goh BH, Lee LH. Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs. Front Microbiol 2018; 9:2221. [PMID: 30319563 PMCID: PMC6165876 DOI: 10.3389/fmicb.2018.02221] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/30/2018] [Indexed: 01/21/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) pose a significant health threat as they tend to cause severe infections in vulnerable populations and are difficult to treat due to a limited range of effective antibiotics and also their ability to form biofilm. These organisms were once limited to hospital acquired infections but are now widely present in the community and even in animals. Furthermore, these organisms are constantly evolving to develop resistance to more antibiotics. This results in a need for new clinically useful antibiotics and one potential source are the Streptomyces which have already been the source of several anti-MRSA drugs including vancomycin. There remain large numbers of Streptomyces potentially undiscovered in underexplored regions such as mangrove, deserts, marine, and freshwater environments as well as endophytes. Organisms from these regions also face significant challenges to survival which often result in the production of novel bioactive compounds, several of which have already shown promise in drug development. We review the various mechanisms of antibiotic resistance in MRSA and all the known compounds isolated from Streptomyces with anti-MRSA activity with a focus on those from underexplored regions. The isolation of the full array of compounds Streptomyces are potentially capable of producing in the laboratory has proven a challenge, we also review techniques that have been used to overcome this obstacle including genetic cluster analysis. Additionally, we review the in vivo work done thus far with promising compounds of Streptomyces origin as well as the animal models that could be used for this work.
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Affiliation(s)
- Hefa Mangzira Kemung
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Tahir Mehmood Khan
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,The Institute of Pharmaceutical Sciences (IPS), University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.,International Genome Centre, Jiangsu University, Zhenjiang, China
| | - Priyia Pusparajah
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Bey-Hing Goh
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Mueang Phayao, Thailand
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia.,Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Mueang Phayao, Thailand
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5
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Tetrodecamycin: An unusual and interesting tetronate antibiotic. Bioorg Med Chem 2016; 24:6269-6275. [DOI: 10.1016/j.bmc.2016.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/08/2016] [Accepted: 05/17/2016] [Indexed: 11/23/2022]
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Biosynthetic Genes for the Tetrodecamycin Antibiotics. J Bacteriol 2016; 198:1965-1973. [PMID: 27137499 DOI: 10.1128/jb.00140-16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 04/26/2016] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED We recently described 13-deoxytetrodecamycin, a new member of the tetrodecamycin family of antibiotics. A defining feature of these molecules is the presence of a five-membered lactone called a tetronate ring. By sequencing the genome of a producer strain, Streptomyces sp. strain WAC04657, and searching for a gene previously implicated in tetronate ring formation, we identified the biosynthetic genes responsible for producing 13-deoxytetrodecamycin (the ted genes). Using the ted cluster in WAC04657 as a reference, we found related clusters in three other organisms: Streptomyces atroolivaceus ATCC 19725, Streptomyces globisporus NRRL B-2293, and Streptomyces sp. strain LaPpAH-202. Comparing the four clusters allowed us to identify the cluster boundaries. Genetic manipulation of the cluster confirmed the involvement of the ted genes in 13-deoxytetrodecamycin biosynthesis and revealed several additional molecules produced through the ted biosynthetic pathway, including tetrodecamycin, dihydrotetrodecamycin, and another, W5.9, a novel molecule. Comparison of the bioactivities of these four molecules suggests that they may act through the covalent modification of their target(s). IMPORTANCE The tetrodecamycins are a distinct subgroup of the tetronate family of secondary metabolites. Little is known about their biosynthesis or mechanisms of action, making them an attractive subject for investigation. In this paper we present the biosynthetic gene cluster for 13-deoxytetrodecamycin in Streptomyces sp. strain WAC04657. We identify related clusters in several other organisms and show that they produce related molecules.
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Yuan J, Zhang Q, Yu M, Huang P, Zhang R, Dong D. Phenyliodine(III) Diacetate Mediated Oxidative Cyclization of 1-Alkenoyl-1-carbamoyl Cycloalkanes: Access to Spiro-Fused Dihydrofuran-3(2H)-ones. Org Lett 2015; 17:5012-5. [DOI: 10.1021/acs.orglett.5b02485] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jingwen Yuan
- Key
Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Qian Zhang
- Key
Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Mangfei Yu
- Key
Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Peng Huang
- College
of Chemistry, Liaoning University, Shenyang, 110036, China
| | - Rui Zhang
- Key
Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Dewen Dong
- Key
Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
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9
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Gverzdys T, Hart MK, Pimentel-Elardo S, Tranmer G, Nodwell JR. 13-Deoxytetrodecamycin, a new tetronate ring-containing antibiotic that is active against multidrug-resistant Staphylococcus aureus. J Antibiot (Tokyo) 2015; 68:698-702. [DOI: 10.1038/ja.2015.60] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 11/09/2022]
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10
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Li G, Kusari S, Spiteller M. Natural products containing 'decalin' motif in microorganisms. Nat Prod Rep 2015; 31:1175-201. [PMID: 24984916 DOI: 10.1039/c4np00031e] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microorganisms are well-known producers of a wide variety of bioactive compounds that are utilized not only for their primary metabolism but also for other purposes such as defense, detoxification, or communication with other micro- and macro-organisms. Natural products containing a 'decalin ring' occur often in microorganisms. They exhibit diverse and remarkable biological activities, including antifungal, antibacterial, anticancer and immunosuppressive activities, to name a few. This review surveys the natural decalin-type compounds that have been isolated from microorganisms, with emphasis on both chemical and biological implications. Total syntheses of some important decalin moiety-containing natural products are also highlighted.
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Affiliation(s)
- Gang Li
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, Chair of Environmental Chemistry and Analytical Chemistry, TU Dortmund, Otto-Hahn-Str.6, 44221 Dortmund, Germany.
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Vieweg L, Reichau S, Schobert R, Leadlay PF, Süssmuth RD. Recent advances in the field of bioactive tetronates. Nat Prod Rep 2014; 31:1554-84. [DOI: 10.1039/c4np00015c] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Peixoto PA, Boulangé A, Leleu S, Franck X. Versatile Synthesis of Acylfuranones by Reaction of Acylketenes with α-Hydroxy Ketones: Application to the One-Step Multicomponent Synthesis of Cadiolide B and Its Analogues. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300166] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Shi LL, Shen HJ, Fang LC, Huang J, Li CC, Yang Z. Development of an expedient intramolecular Pauson–Khand reaction approach to stereoselectively construct the trans-decalin with a C1 quaternary chiral center. Chem Commun (Camb) 2013; 49:8806-8. [DOI: 10.1039/c3cc45170d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Avetisyan AA, Alvandzhyan AG, Avetisyan KS. Convenient synthesis of 2-imino-3-(2-thienyl)-2(5H)-furans and their certain transformations. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2011. [DOI: 10.1134/s1070428011020175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Avetisyan AA, Alvandzhyan AG, Avetisyan KS. Synthesis of new 2-substituted 2,5-dihydrofuranone derivatives and their chemical transformations. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2010. [DOI: 10.1134/s1070428009120240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Arns S, Barriault L. Cascading pericyclic reactions: building complex carbon frameworks for natural product synthesis. Chem Commun (Camb) 2007:2211-21. [PMID: 17534496 DOI: 10.1039/b700054p] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tandem reactions have emerged as powerful strategies to synthesize complex structures, in particular, processes involving pericyclic reactions. This article describes recent advancement by our group in the development of novel tandem pericyclic reactions aimed at constructing diterpene frameworks.
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Affiliation(s)
- Steve Arns
- Department of Chemistry, 10 Marie Curie, University of Ottawa, Ottawa, Ontario, CanadaK1N 6N5
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Warrington JM, Barriault L. Synthesis of the C7-C15 trans decalin portion of the natural antibiotic tetrodecamycin. Org Lett 2006; 7:4589-92. [PMID: 16209486 DOI: 10.1021/ol051715f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The tandem oxy-Cope/ene/Claisen rearrangement has been developed in our laboratory as a powerful method for rapid construction of complex Decalin cores. Herein, we describe the use of this method to generate the Decalin core of the natural antibiotic tetrodecamycin (1) bearing six contiguous stereocenters.
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Affiliation(s)
- Jeffrey M Warrington
- Department of Chemistry, 10 Marie Curie, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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19
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Paintner FF, Allmendinger L, Bauschke G, Berns C, Heisig P. Synthesis and antimicrobial activity of tetrodecamycin partial structures. Bioorg Med Chem 2003; 11:2823-33. [PMID: 12788355 DOI: 10.1016/s0968-0896(03)00221-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
An efficient synthetic approach to the core structure 5 of the novel polyketide antibiotic tetrodecamycin (1) was developed. This approach features the acid-catalyzed cyclization of a tert-butyldimethylsilyl protected methyl alpha-(gamma-hydroxyacyl) tetronate, leading to the novel tricyclic ring skeleton exhibited by 5, and an efficient strategy for the parallel introduction of the cis-diol and exo-methylene function. In addition to 5, diastereomer 26, analogue 6 and several derivatives (16, 27-29) were prepared and evaluated for their antibacterial activities against Staphylococcus aureus (including MRSA) and Enterococcus faecalis and for their cytotoxic activities against human leukemia cell lines (HL-60, Jurkat T-cells). While compound 5 did not inhibit the growth of the Gram-positive pathogens (MICs >128 microg mL(-1)), analogue 6 and 2-naphthoyl derivative 27 showed promising antibacterial activities with MICs of 4-16 microg mL(-1). Remarkably, the antibacterial activity of these compounds was paralleled by cytotoxicity (IC(50) 10-23 microM). The reactive exo-methylene moiety was shown to be crucial, but not sufficient by its own, for both the antibacterial and the cytotoxic activities.
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Affiliation(s)
- Franz F Paintner
- Department Pharmazie-Zentrum für Pharmaforschung, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus C, D-81377 München, Germany.
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22
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Tyvorskii VI, Kukharev AS, Kulinkovich OG, De Kimpe N, Abbaspour Tehrani K. A convenient synthesis of 3-functionalized 5-alkoxymethyl- and 5-phenoxymethyl-2(5H)-furanones and their transformations into related epoxy and methylene lactones. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(97)10388-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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