1
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Wang ZQ, Deng C, Li B, Luo HQ, Hao P, Liu X, Ma JG, Cheng P. Hierarchical surface-modification of nano-Cu toward one pot H-transfer-coupling-cyclization-CO 2 fixation tandem reactions. MATERIALS HORIZONS 2024; 11:1957-1963. [PMID: 38348621 DOI: 10.1039/d3mh01921g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Fixation of CO2 into dihydroisobenzofuran derivatives has enormous applications in both production of natural products and antidepressant drugs, and reducing the green-house effect. However, the relatively complicated multi-step processes limit the further expansion of such a valuable CO2 conversion strategy. Herein, we hierarchically modify the surface of Cu nanoparticles (NPs) with Ag NPs and the robust metal-organic framework (MOF), ZIF-8, and report the presence of the Cu-Ag yolk-shell nanoalloy based heterogeneous catalysts, Cu@Ag and Cu@Ag@ZIF-8. The latter exhibits a crystalline "raisin bread" structure and specific synergic activity for catalyzing the tandem reactions of intra-molecular H-transfer, C-C and C-O coupling, cyclization, and carboxylation from CO2, leading to the first non-homogeneous preparation of dihydroisobenzofuran derivatives in high yield, selectivity, and recyclability under mild conditions. Theoretical calculations elucidate the tandem reaction pathway synergically catalyzed by Cu@Ag@ZIF-8, which offers insights for designing multiphase catalysts towards both organic synthesis and CO2 fixation through tandem processes in one pot.
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Affiliation(s)
- Zhi-Qiang Wang
- College of Basic Sciences, Shanxi Agricultural University, Jinzhong, 030800, P. R. China
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - ChengHua Deng
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Bo Li
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Hai-Qiang Luo
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Peng Hao
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xiao Liu
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jian-Gong Ma
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Peng Cheng
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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2
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Wang J, Huang H, Gao H, Qin G, Xiao T, Jiang Y. DBU/AgOTf Relay‐Catalysis Enabled One‐Pot Synthesis of 1,3‐Dihydroisobenzofurans and Its Conversion to Indanones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiazhuang Wang
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Hongtai Huang
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Haotian Gao
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Guiping Qin
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Tiebo Xiao
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Yubo Jiang
- Faculty of Science Kunming University of Science and Technology Kunming 650500 People's Republic of China
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3
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Dapkekar AB, Sreenivasulu C, Kishore DR, Satyanarayana G. Recent Advances Towards the Synthesis of Dihydrobenzofurans and Dihydroisobenzofurans. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | - Gedu Satyanarayana
- Indian Institute of Technology Hyderabad Chemistry KandiSangareddy District 502 285 Hyderabad INDIA
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4
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Ding YL, Li SN, Cheng Y. Selective Synthesis of Multifunctionalized 2,3-Dihydroinden-1-ones and 1,3-Dihydroisobenzofurans from the Reaction of o-Alkynylbenzaldehydes with Imines Steered by N-Heterocyclic Carbene/Copper(II) and N-Heterocyclic Carbene/Base Cascade Catalysis. J Org Chem 2018; 83:8971-8983. [DOI: 10.1021/acs.joc.8b01163] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ya-Li Ding
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Shi-Ning Li
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ying Cheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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5
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Albano G, Aronica LA. Potentiality and Synthesis of O- and N-Heterocycles: Pd-Catalyzed Cyclocarbonylative Sonogashira Coupling as a Valuable Route to Phthalans, Isochromans, and Isoindolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701041] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
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6
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Sun R, Jiang Y, Tang XY, Shi M. RhII-Catalyzed Cyclization of Ester/Thioester-ContainingN-Sulfonyl-1,2,3-triazoles: Facile Synthesis of Alkylidenephthalans and Alkylidenethiophthalans. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600466] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Run Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
| | - Yu Jiang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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7
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Aronica LA, Giannotti L, Tuci G, Zinna F. Cyclocarbonylative Sonogashira Reactions of 1-Ethynylbenzyl Alcohols: Synthesis of 1-Carbonylmethylene-1,3-Dihydroisobenzofurans. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500539] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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New meroterpenoids from the endophytic fungus Aspergillus flavipes AIL8 derived from the mangrove plant Acanthus ilicifolius. Mar Drugs 2015; 13:237-48. [PMID: 25574738 PMCID: PMC4306934 DOI: 10.3390/md13010237] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 12/22/2014] [Indexed: 01/28/2023] Open
Abstract
Four new meroterpenoids (2–5), along with three known analogues (1, 6, and 7) were isolated from mangrove plant Acanthus ilicifolius derived endophytic fungus Aspergillus flavipes. The structures of these compounds were elucidated by NMR and MS analysis, the configurations were assigned by CD data, and the stereochemistry of 1 was confirmed by X-ray crystallography analysis. A possible biogenetic pathway of compounds 1–7 was also proposed. All compounds were evaluated for antibacterial and cytotoxic activities.
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9
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Krishna J, Niharika P, Satyanarayana G. Sequential one-pot approach for the synthesis of functionalized phthalans via Heck-reduction–cyclization (HRC) reactions. RSC Adv 2015. [DOI: 10.1039/c5ra00955c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
An efficient and practical method is described for the direct synthesis of 1,3-dihydroisobenzofurans, an important structural motif present in biologically active natural or synthetic compounds.
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Affiliation(s)
- Jonnada Krishna
- Department of Chemistry
- Indian Institute of Technology (IIT), Hyderabad
- Ordnance Factory Estate Campus
- Medak District
- India
| | - Pedireddi Niharika
- Department of Chemistry
- Indian Institute of Technology (IIT), Hyderabad
- Ordnance Factory Estate Campus
- Medak District
- India
| | - Gedu Satyanarayana
- Department of Chemistry
- Indian Institute of Technology (IIT), Hyderabad
- Ordnance Factory Estate Campus
- Medak District
- India
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10
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Hubka V, Nováková A, Kolařík M, Jurjević Ž, Peterson SW. Revision of Aspergillus section Flavipedes: seven new species and proposal of section Jani sect. nov. Mycologia 2014; 107:169-208. [PMID: 25344259 DOI: 10.3852/14-059] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Aspergillus section Flavipedes contains species found worldwide in soils and rhizospheres, indoor and cave environments, as endophytes, food contaminants and occasionally as human pathogens. They produce many extensively studied bioactive secondary metabolites and biotechnologically relevant enzymes. The taxa were revised based on phylogenetic analysis of sequences from four loci (β-tubulin, calmodulin, RPB2, ITS rDNA), two PCR fingerprinting methods, micro- and macromorphology and physiology. Section Flavipedes includes three known and seven new species: A. ardalensis, A. frequens, A. luppii, A. mangaliensis, A. movilensis, A. polyporicola and A. spelaeus. The name A. neoflavipes was proposed for Fennellia flavipes a distinct species from its supposed asexual state A. flavipes. Aspergillus iizukae, A. frequens and A. mangaliensis are the most common and widely distributed species, whereas A. flavipes s. str. is rare. A dichotomous key based on the combination of morphology and physiology is provided for all recognized species. Aspergillus section Jani is established to contain A. janus and A. brevijanus, species previously classified as members of sect. Versicolores, Terrei or Flavipedes. This new section is strongly supported by phylogenetic data and morphology. Section Jani species produce three types of conidiophores and conidia, and colonies have green and white sectors making them distinctive. Accessory conidia found in pathogenic A. terreus were found in all members of sects. Flavipedes and Jani. Our data indicated that A. frequens is a clinically relevant and produces accessory conidia during infection.
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Affiliation(s)
- Vit Hubka
- Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01 Prague 2, Czech RepublicInstitute of Microbiology AS CR, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Alena Nováková
- Institute of Microbiology AS CR, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic, and Institute of Soil Biology, Biology Centre AS CR, v.v.i., Na Sádkách 7, 370 05 České Budějovice, Czech Republic
| | - Miroslav Kolařík
- Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01 Prague 2, Czech Republic, and Institute of Microbiology AS CR, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Željko Jurjević
- EMSL Analytical Inc., 200 Route 130 North, Cinnaminson, New Jersey 08077
| | - Stephen W Peterson
- Bacterial Foodborne Pathogens and Mycology Research Unit, National Center for Agricultural Utilization Research, 1815 N. University Street, Peoria, Illinois 61604
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11
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Xu J, Zhao S, Yang X. A new cyclopeptide metabolite of marine gut fungus from Ligia oceanica. Nat Prod Res 2014; 28:994-7. [DOI: 10.1080/14786419.2014.902945] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Jinzhong Xu
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, P.R. China
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, P.R. China
| | - Shizhe Zhao
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, P.R. China
| | - Xianwen Yang
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, P.R. China
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12
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Karmakar R, Pahari P, Mal D. Phthalides and Phthalans: Synthetic Methodologies and Their Applications in the Total Synthesis. Chem Rev 2014; 114:6213-84. [DOI: 10.1021/cr400524q] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Raju Karmakar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Technical University of Braunschweig, 38106 Braunschweig, Germany
| | - Pallab Pahari
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Synthetic
Organic Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
| | - Dipakranjan Mal
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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13
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Bai ZQ, Lin X, Wang Y, Wang J, Zhou X, Yang B, Liu J, Yang X, Wang Y, Liu Y. New phenyl derivatives from endophytic fungus Aspergillus flavipes AIL8 derived of mangrove plant Acanthus ilicifolius. Fitoterapia 2014; 95:194-202. [PMID: 24704337 DOI: 10.1016/j.fitote.2014.03.021] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 03/22/2014] [Accepted: 03/25/2014] [Indexed: 12/01/2022]
Abstract
Two new aromatic butyrolactones, flavipesins A (1) and B (2), two new natural products (3 and 4), and a known phenyl dioxolanone (5) were isolated from marine-derived endophytic fungus Aspergillus flavipes. The structures of compounds 1-5 were elucidated by 1D- and 2D-NMR and MS analysis, the absolute configurations were assigned by optical rotation and CD data, and the stereochemistry of 1 was determined by X-ray crystallography analysis. 1 demonstrated lower MIC values against Staphylococcus aureus (8.0 μg/mL) and Bacillus subtillis (0.25 μg/mL). 1 also showed the unique antibiofilm activity of penetration through the biofilm matrix and kills live bacteria inside mature S. aureus biofilm.
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Affiliation(s)
- Zhi-Qiang Bai
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Guangdong Institute of Microbiology, Guangzhou 510070, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yizhu Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China; Department of Genetics, School of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Junfeng Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bin Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Juan Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xianwen Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yi Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
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14
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Efficient synthesis of functionalized 1,3-dihydroisobenzofurans from salicylaldehydes: Application to the synthesis of escitalopram. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.01.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Goemaere E, Melet A, Larue V, Lieutaud A, Alves de Sousa R, Chevalier J, Yimga-Djapa L, Giglione C, Huguet F, Alimi M, Meinnel T, Dardel F, Artaud I, Pagès JM. New peptide deformylase inhibitors and cooperative interaction: a combination to improve antibacterial activity. J Antimicrob Chemother 2012; 67:1392-400. [PMID: 22378679 DOI: 10.1093/jac/dks058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES Bacterial drug resistance is a worrying public health problem and there is an urgent need for research and development to provide new antibacterial molecules. Peptide deformylase (PDF) is now a well-described intracellular target selected for the design of a new antibiotic group, PDF inhibitors (PDFIs). The initial bacterial susceptibility to an inhibitor of a cytoplasmic target is directly associated with the diffusion of the compound through the membrane barrier of Gram-negative bacteria and with its cytosolic accumulation at the required concentration. METHODS We have recently demonstrated that the activity of different PDFIs is strongly dependent on the accumulation of the active molecules by using permeabilizing agents, efflux inhibitors or efflux-mutated strains. In this work we assessed various combination protocols using different putative inhibitors (PDFIs, methionine aminopeptidase inhibitors etc.) to improve antibacterial activity against various resistant Gram-negative bacteria. RESULTS The maximum effect was observed when combining actinonin with a dual inhibitor of methionine aminopeptidase and PDF, this molecule being also able to interact with the target while actinonin is bound to the PDF active site. CONCLUSIONS Such a combination of inhibitors acting on two tightly associated metabolic steps results in a cooperative effect on bacterial cells and opens an original way to combat multidrug-resistant bacteria.
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Affiliation(s)
- Emilie Goemaere
- UMR-MD1, Transporteurs Membranaires, Chimiorésistance et Drug-Design, Aix-Marseille Université, IRBA, Marseille, France
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Kwon YJ, Sohn MJ, Kim CJ, Koshino H, Kim WG. Flavimycins A and B, dimeric 1,3-dihydroisobenzofurans with peptide deformylase inhibitory activity from Aspergillus flavipes. JOURNAL OF NATURAL PRODUCTS 2012; 75:271-274. [PMID: 22329646 DOI: 10.1021/np200720v] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Flavimycins A (1) and B (2), novel dimeric 1,3-dihydroisobenzofurans, were isolated as inhibitors of peptide deformylase from cultures of Aspergillus flavipes. Their chemical structures were established by NMR and MS data analysis. Compounds 1 and 2 exist as epimeric mixtures at C-1 through fast hemiacetal-aldehyde tautomerism. Compounds 1 and 2 inhibited Staphylococcus aureus peptide deformylase with IC₅₀ values of 35.8 and 100.1 μM, respectively. Consistent with their PDF inhibition, 1 showed two times stronger antibacterial activity than 2 on S. aureus including MRSA, with MIC values of 32-64 μg/mL.
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Affiliation(s)
- Yun-Ju Kwon
- Korea Research Institute of Bioscience and Biotechnology , Yusong, Daejeon 305-806, Republic of Korea
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17
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A simple and efficient large-scale synthesis of 3-hydroxyphthalans via oxa-Pictet–Spengler reaction catalyzed by nanosilica sulfuric acid. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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