1
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Schwickert KK, Glitscher M, Bender D, Benz NI, Murra R, Schwickert K, Pfalzgraf S, Schirmeister T, Hellmich UA, Hildt E. Zika virus replication is impaired by a selective agonist of the TRPML2 ion channel. Antiviral Res 2024; 228:105940. [PMID: 38901736 DOI: 10.1016/j.antiviral.2024.105940] [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: 01/31/2024] [Revised: 05/21/2024] [Accepted: 06/17/2024] [Indexed: 06/22/2024]
Abstract
The flavivirus genus includes human pathogenic viruses such as Dengue (DENV), West Nile (WNV) and Zika virus (ZIKV) posing a global health threat due to limited treatment options. Host ion channels are crucial for various viral life cycle stages, but their potential as targets for antivirals is often not fully realized due to the lack of selective modulators. Here, we observe that treatment with ML2-SA1, an agonist for the human endolysosomal cation channel TRPML2, impairs ZIKV replication. Upon ML2-SA1 treatment, levels of intracellular genomes and number of released virus particles of two different ZIKV isolates were significantly reduced and cells displayed enlarged vesicular structures and multivesicular bodies with ZIKV envelope protein accumulation. However, no increased ZIKV degradation in lysosomal compartments was observed. Rather, the antiviral effect of ML2-SA1 seemed to manifest by the compound's negative impact on genome replication. Moreover, ML2-SA1 treatment also led to intracellular cholesterol accumulation. ZIKV and many other viruses including the Orthohepevirus Hepatitis E virus (HEV) rely on the endolysosomal system and are affected by intracellular cholesterol levels to complete their life cycle. Since we observed that ML2-SA1 also negatively impacted HEV infections in vitro, this compound may harbor a broader antiviral potential through perturbing the intracellular cholesterol distribution. Besides indicating that TRPML2 may be a promising target for combatting viral infections, we uncover a tentative connection between this protein and cholesterol distribution within the context of infectious diseases.
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Affiliation(s)
- Kerstin K Schwickert
- Faculty of Chemistry and Earth Sciences, Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Germany; Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany; Department of Chemistry, Johannes Gutenberg-University, 55122, Mainz, Germany
| | - Mirco Glitscher
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Daniela Bender
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Nuka Ivalu Benz
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Robin Murra
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Kevin Schwickert
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University, 55122, Mainz, Germany
| | - Steffen Pfalzgraf
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Tanja Schirmeister
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University, 55122, Mainz, Germany
| | - Ute A Hellmich
- Faculty of Chemistry and Earth Sciences, Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Germany; Centre for Biomolecular Magnetic Resonance (BMRZ), Goethe University, Frankfurt, Germany; Cluster of Excellence "Balance of the Microverse", Friedrich Schiller University, Jena, Germany.
| | - Eberhard Hildt
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany.
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2
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Ouzounthanasis KA, Rizos SR, Koumbis AE. A Convenient Synthesis of Novel Isoxazolidine and Isoxazole Isoquinolinones Fused Hybrids. Molecules 2023; 29:91. [PMID: 38202674 PMCID: PMC10779618 DOI: 10.3390/molecules29010091] [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: 11/29/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Isoxazolidine, isoxazole, and isoquinolinone rings are present in the structure of several natural products and/or pharmaceutically interesting compounds. In this work, facile and efficient pathways have been developed for the preparation of fused frameworks bearing those heterocycles. The successful approaches for both isoxazolidine/isoquinolinone and isoxazole/isoquinolinone hybrid syntheses relied initially on 1,3-dipolar cycloadditions of nitrones and nitrile oxides to indenone and 2-propargylbenzamide, respectively. The construction of the isoquinolinone lactam system followed by performing a selective Schmidt reaction for isoxazolidine derivatives (two steps overall), whereas the isoxazole lactams were reached via an Ullmann-type cyclisation (three steps overall). Key observations were made regarding the stereo- and regioselectivities of the reactions employed, and small libraries of the targeted hybrids were prepared, demonstrating the general applicability of these strategies.
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Affiliation(s)
- Konstantinos A. Ouzounthanasis
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Stergios R. Rizos
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St., Cambridge, MA 02138, USA;
| | - Alexandros E. Koumbis
- Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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3
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Mechanochemical Dimerization of Aldoximes to Furoxans. Molecules 2022; 27:molecules27082604. [PMID: 35458802 PMCID: PMC9027020 DOI: 10.3390/molecules27082604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022] Open
Abstract
Solvent-free mechanical milling is a new, environmentally friendly and cost-effective technology that is now widely used in the field of organic synthesis. The mechanochemical solvent-free synthesis of furoxans from aldoximes was achieved through dimerization of the in situ generated nitrile oxides in the presence of sodium chloride, Oxone and a base. A variety of furoxans was obtained with up to a 92% yield. The present protocol has the advantages of high reaction efficiency and mild reaction conditions.
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4
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Kimura R, Sato Y, Morisaki K, Nishi T. [3 + 2] cycloaddition of 1-(4-Methoxybenzyl)indoles and azaindoles with nitrile oxides. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Shybanov DE, Filkina ME, Kukushkin ME, Grishin YK, Roznyatovsky VA, Zyk NV, Beloglazkina EK. Diffusion mixing with a volatile tertiary amine as a very efficient technique for 1,3-dipolar cycloaddition reactions proceeding via dehydrohalogenation of stable precursors of reactive dipoles. NEW J CHEM 2022. [DOI: 10.1039/d2nj03756d] [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
Spontaneous diffusion of tertiary amine vapors into a dipolarophile precursor solution is the simplest technique for nitrilylide and nitrilimine generation in 1,3-cycloaddition reactions.
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Affiliation(s)
- Dmitry E. Shybanov
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Maria E. Filkina
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Maxim E. Kukushkin
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Yuri K. Grishin
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Vitaly A. Roznyatovsky
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Nikolai V. Zyk
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
| | - Elena K. Beloglazkina
- Department of Chemistry, M.V. Lomonosov Moscow State University Leninskie Gory, 1-3, 119991 Moscow, Russian Federation
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6
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Laamari Y, Auhmani A, Saadi M, Ammari LE, Khouili M, Itto MYA, Auhmani A, Ketatni EM. Synthesis, crystal structure, DFT studies and Hirshfeld surface analysis of novel isoxazole derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Plumet J. 1,3-Dipolar Cycloaddition Reactions of Nitrile Oxides under "Non-Conventional" Conditions: Green Solvents, Irradiation, and Continuous Flow. Chempluschem 2021; 85:2252-2271. [PMID: 33044044 DOI: 10.1002/cplu.202000448] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/11/2020] [Indexed: 01/15/2023]
Abstract
The 1,3-dipolar cycloaddition reactions (DCs) of nitrile oxides (NOs) to alkenes and alkynes are useful methods for the synthesis of 2-isoxazolines and isoxazoles respectively, which are important classes of heterocyclic compounds in organic and medicinal chemistry. Most of these reactions are carried out in organic solvents and under thermal activation. Nevertheless the use of supercritical carbon dioxide (scCO2 ) and ionic liquids (Ils) as alternative solvents and the application of microwave (MW) and ultrasound (US) as alternative activation procedures have evident advantages from the "Green Chemistry" point of view. The critical discussion on the applications of these "unconventional" activation methods and reaction conditions in the 1,3-DCs of NOs is the objective of the present Review.
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Affiliation(s)
- Joaquín Plumet
- Department of Organic Chemistry. Faculty of Chemistry, Complutense University of Madrid, Ciudad Universitaria, 28040, Madrid, Spain
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8
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Structural Basis for Design of New Purine-Based Inhibitors Targeting the Hydrophobic Binding Pocket of Hsp90. Int J Mol Sci 2020; 21:ijms21249377. [PMID: 33317068 PMCID: PMC7763603 DOI: 10.3390/ijms21249377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/27/2020] [Accepted: 12/03/2020] [Indexed: 12/23/2022] Open
Abstract
Inhibition of the molecular chaperone heat shock protein 90 (Hsp90) represents a promising approach for cancer treatment. BIIB021 is a highly potent Hsp90 inhibitor with remarkable anticancer activity; however, its clinical application is limited by lack of potency and response. In this study, we aimed to investigate the impact of replacing the hydrophobic moiety of BIIB021, 4-methoxy-3,5-dimethylpyridine, with various five-membered ring structures on the binding to Hsp90. A focused array of N7/N9-substituted purines, featuring aromatic and non-aromatic rings, was designed, considering the size of hydrophobic pocket B in Hsp90 to obtain insights into their binding modes within the ATP binding site of Hsp90 in terms of π–π stacking interactions in pocket B as well as outer α-helix 4 configurations. The target molecules were synthesized and evaluated for their Hsp90α inhibitory activity in cell-free assays. Among the tested compounds, the isoxazole derivatives 6b and 6c, and the sole six-membered derivative 14 showed favorable Hsp90α inhibitory activity, with IC50 values of 1.76 µM, 0.203 µM, and 1.00 µM, respectively. Furthermore, compound 14 elicited promising anticancer activity against MCF-7, SK-BR-3, and HCT116 cell lines. The X-ray structures of compounds 4b, 6b, 6c, 8, and 14 bound to the N-terminal domain of Hsp90 were determined in order to understand the obtained results and to acquire additional structural insights, which might enable further optimization of BIIB021.
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9
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Zhao G, Liang L, Wen CHE, Tong R. In Situ Generation of Nitrile Oxides from NaCl-Oxone Oxidation of Various Aldoximes and Their 1,3-Dipolar Cycloaddition. Org Lett 2018; 21:315-319. [PMID: 30576159 DOI: 10.1021/acs.orglett.8b03829] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reported is a new green protocol for the efficient in situ generation of nitrile oxides through NaCl/Oxone oxidation of aldoximes and their dipolar cycloaddition. The key feature is the use of a green chemistry approach to address the substrate scope of aldoximes: broad scope (aliphatic, aromatic, and alkenyl aldoximes) without production of organic byproducts derived from oxidant and/or catalyst. Importantly, NaCl/Oxone-promoted three-component cycloaddition of aldehyde, hydroxylamine hydrochloride, and alkene was demonstrated to be competent (63-81%).
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Affiliation(s)
- Guodong Zhao
- Department of Chemistry , The Hong Kong University of Science and Technology , Clearwater Bay, Kowloon , Hong Kong China
| | - Lixin Liang
- Department of Chemistry , The Hong Kong University of Science and Technology , Clearwater Bay, Kowloon , Hong Kong China
| | - Chi Ho Ethan Wen
- Department of Chemistry , The Hong Kong University of Science and Technology , Clearwater Bay, Kowloon , Hong Kong China
| | - Rongbiao Tong
- Department of Chemistry , The Hong Kong University of Science and Technology , Clearwater Bay, Kowloon , Hong Kong China.,HKUST Shenzhen Research Institute , Shenzhen 518057 , China
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10
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Ledovskaya MS, Rodygin KS, Ananikov VP. Calcium-mediated one-pot preparation of isoxazoles with deuterium incorporation. Org Chem Front 2018. [DOI: 10.1039/c7qo00705a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this work, a novel synthetic methodology for the one-pot preparation of isoxazoles directly from the reaction of calcium carbide with aldoximes is reported.
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Affiliation(s)
| | | | - Valentine P. Ananikov
- Saint Petersburg State University
- Peterhof
- Russia
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences
- Moscow
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11
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Roscales S, Plumet J. Metal-catalyzed 1,3-dipolar cycloaddition reactions of nitrile oxides. Org Biomol Chem 2018; 16:8446-8461. [DOI: 10.1039/c8ob02072h] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this review recent advances in the metal-catalyzed 1,3-dipolar cycloaddition reactions of nitrile oxides are highlighted, covering references from the period 2000 until August 2018.
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Affiliation(s)
- Silvia Roscales
- Universidad Complutense
- Facultad de Química
- Departamento de Química Orgánica
- Ciudad Universitaria
- Madrid
| | - Joaquín Plumet
- Universidad Complutense
- Facultad de Química
- Departamento de Química Orgánica
- Ciudad Universitaria
- Madrid
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12
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Sakly R, Edziri H, Askri M, Knorr M, Louven K, Strohmann C, Mastouri M. Synthesis of New Spirooxindole-Fused Isoxazoline/Triazole and Isoxazoline/Isoxazole Derivatives from Three-Component 1,3-Dipolar Cycloaddition. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Randa Sakly
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science; University of Monastir; 5000 Monastir Tunisia
| | - Hayet Edziri
- Laboratoire des Maladies Transmissibles et des Substances Biologiquement Actives Faculté de Pharmacie; 5000 Monastir Tunisia
| | - Moheddine Askri
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science; University of Monastir; 5000 Monastir Tunisia
| | - Michael Knorr
- Institut UTINAM-UMR CNRS 6213; Université Bourgogne Franche-Comté; 16 Route de Gray 25030 Besançon France
| | - Kathrin Louven
- Anorganische Chemie; Technische Universität Dortmund; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Carsten Strohmann
- Anorganische Chemie; Technische Universität Dortmund; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Maha Mastouri
- Laboratoire des Maladies Transmissibles et des Substances Biologiquement Actives Faculté de Pharmacie; 5000 Monastir Tunisia
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13
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Nikodemiak P, Koert U. Metal-Catalyzed Synthesis of Functionalized 1,2,4-Oxadiazoles from Silyl Nitronates and Nitriles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601378] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Paul Nikodemiak
- Fachbereich Chemie; Philipps-University Marburg; Hans-Meerwein-Strasse 35032 Marburg Germany
| | - Ulrich Koert
- Fachbereich Chemie; Philipps-University Marburg; Hans-Meerwein-Strasse 35032 Marburg Germany
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14
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Ding R, Zhang T, Xie J, Williams J, Ye Y, Chen L. Eeyarestatin I derivatives with improved aqueous solubility. Bioorg Med Chem Lett 2016; 26:5177-5181. [DOI: 10.1016/j.bmcl.2016.09.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/23/2016] [Accepted: 09/28/2016] [Indexed: 12/17/2022]
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15
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Afraj SN, Nuzlia C, Chen C, Lee GH. Multicomponent Coupling Reaction and Intramolecular Nitrile Oxide-Alkyne Cycloaddition towards Isoxazolo[3,4]-pyrrolizines. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shakil N. Afraj
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
| | - Cut Nuzlia
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
| | - Chinpiao Chen
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
- Department of Nursing; Tzu Chi University of Science and Technology; Hualien 970 Taiwan
| | - Gene-Hsian Lee
- Instrumentation Center; National Taiwan University; Taipei 10617 Taiwan
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16
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Rammah MM, Gati W, Mtiraoui H, Rammah MEB, Ciamala K, Knorr M, Rousselin Y, Kubicki MM. Synthesis of Isoxazole and 1,2,3-Triazole Isoindole Derivatives via Silver- and Copper-Catalyzed 1,3-Dipolar Cycloaddition Reaction. Molecules 2016; 21:307. [PMID: 26959000 PMCID: PMC6273791 DOI: 10.3390/molecules21030307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 02/23/2016] [Accepted: 02/26/2016] [Indexed: 11/19/2022] Open
Abstract
The CuI- or Ag₂CO₃-catalyzed [3+2] cycloaddition of propargyl-substituted dihydroisoindolin-1-one (3) with arylnitrile oxides 1a-d (Ar = Ph, p-MeC₆H₄, p-MeOC₆H₄, p-ClC₆H₄) produces in good yields novel 3,5-disubstituted isoxazoles 4 of the ethyl-2-benzyl-3-oxo-1-((3-arylisoxazol-5yl)methyl)-2,3-dihydro-1H-isoindole-1-carboxylate type. With aryl azides 2a-d (Ar = Ph, p-MeC₆H₄, p-OMeC₆H₄, p-ClC₆H₄), a series of 1,4-disubstituted 1,2,3-triazoles 6 (ethyl-2-benzyl-3-oxo-1-((1-aryl-1H-1,2,3-triazol-4-yl)methyl)-2,3-dihydro-1H-isoindole-1-carboxylates) was obtained. The reactions proceed in a regioselective manner affording exclusively racemic adducts 4 and 6. Compared to the uncatalyzed cycloaddition, the yields are significantly improved in the presence of CuI as catalyst, without alteration of the selectivity. The regio- and stereochemistry of the cycloadducts has been corroborated by an X-ray diffraction study of 4a, and in the case of 6a by XH-correlation and HMBC spectra.
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Affiliation(s)
- Mohamed Mehdi Rammah
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science, University of Monastir, 5000 Monastir, Tunisia.
| | - Wafa Gati
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science, University of Monastir, 5000 Monastir, Tunisia.
| | - Hasan Mtiraoui
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science, University of Monastir, 5000 Monastir, Tunisia.
| | - Mohamed El Baker Rammah
- Laboratory of Heterocyclic Chemistry Natural Products and Reactivity/LCHPNR, Department of Chemistry, Faculty of Science, University of Monastir, 5000 Monastir, Tunisia.
| | - Kabula Ciamala
- Institut UTINAM-UMR CNRS 6213, Université de Franche-Comté, 16 Route de Gray, 25030 Besançon, France.
| | - Michael Knorr
- Institut UTINAM-UMR CNRS 6213, Université de Franche-Comté, 16 Route de Gray, 25030 Besançon, France.
| | - Yoann Rousselin
- Institut de Chimie Moléculaire-UMR CNRS 6302, Université de Bourgogne, 21078 Dijon, France.
| | - Marek M Kubicki
- Institut de Chimie Moléculaire-UMR CNRS 6302, Université de Bourgogne, 21078 Dijon, France.
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17
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Cao G, Wang Y, Cui T, Huang L, Teng D. Synthesis of 3,4,5-trisubstituted isoxazoles via 1,3-dipolar cycloaddition/SO2 extrusion of benzoisothiazole-2,2-dioxide-3-ylidenes with nitrile oxides. RSC Adv 2016. [DOI: 10.1039/c5ra26718h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An straightforward synthesis of 3,4,5-trisubstituted isoxazole derivatives via 1,3-dipolar cycloaddtion/SO2 extrusion of benzoisothiazole-2,2-dioxide-3-ylidenes with nitrile oxides is reported using 4 Å molecular sieves as dehydrochlorinating agent.
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Affiliation(s)
- Guorui Cao
- College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Yu Wang
- College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Tao Cui
- College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Longjiang Huang
- College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
| | - Dawei Teng
- College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
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18
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Singh D, Devi N, Kumar V, Malakar CC, Mehra S, Rawal RK, Kaith BS, Singh V. Metal-free 1,3-dipolar cycloaddition approach towards the regioselective synthesis of β-carboline and isoxazole based molecular hybrids. RSC Adv 2016. [DOI: 10.1039/c6ra15875g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nature has nourished β-carboline and isoxazole derivatives as privileged scaffolds and consequently they are ubiquitously found in alkaloids isolated from various sources.
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Affiliation(s)
- Dharmender Singh
- Department of Chemistry
- Dr B. R. Ambedkar National Institute of Technology (NIT) Jalandhar
- India
| | - Nisha Devi
- Department of Chemistry
- Dr B. R. Ambedkar National Institute of Technology (NIT) Jalandhar
- India
| | - Vipin Kumar
- Department of Chemistry
- Dr B. R. Ambedkar National Institute of Technology (NIT) Jalandhar
- India
| | - Chandi C. Malakar
- Department of Chemistry
- National Institute of Technology (NIT) Manipur
- Imphal 795004
- India
| | - Saloni Mehra
- Amity Institute of Applied Sciences
- Amity University
- Noida
- India
| | - Ravindra K. Rawal
- Department of Pharmaceutical Chemistry
- Indo-Soviet Friendship College of Pharmacy
- Moga 142001
- India
| | - B. S. Kaith
- Department of Chemistry
- Dr B. R. Ambedkar National Institute of Technology (NIT) Jalandhar
- India
| | - Virender Singh
- Department of Chemistry
- Dr B. R. Ambedkar National Institute of Technology (NIT) Jalandhar
- India
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19
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Hu F, Szostak M. Recent Developments in the Synthesis and Reactivity of Isoxazoles: Metal Catalysis and Beyond. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500319] [Citation(s) in RCA: 220] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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20
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Galenko AV, Khlebnikov AF, Novikov MS, Pakalnis VV, Rostovskii NV. Recent advances in isoxazole chemistry. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4503] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chen W, Wang B, Liu N, Huang D, Wang X, Hu Y. Tandem Synthesis of 3-Halo-5-Substituted Isoxazoles from 1-Copper(I) Alkynes and Dihaloformaldoximes. Org Lett 2014; 16:6140-3. [DOI: 10.1021/ol503008t] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wenwen Chen
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Bo Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Nan Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Dayun Huang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Xinyan Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Yuefei Hu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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Oakdale JS, Sit RK, Fokin VV. Ruthenium-catalyzed cycloadditions of 1-haloalkynes with nitrile oxides and organic azides: synthesis of 4-haloisoxazoles and 5-halotriazoles. Chemistry 2014; 20:11101-10. [PMID: 25059647 PMCID: PMC4442801 DOI: 10.1002/chem.201402559] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 01/22/2023]
Abstract
(Cyclopentadienyl)(cyclooctadiene) ruthenium(II) chloride [CpRuCl(cod)] catalyzes the reaction between nitrile oxides and electronically deficient 1-choro-, 1-bromo-, and 1-iodoalkynes leading to 4-haloisoxazoles. Organic azides are also suitable 1,3-dipoles, resulting in 5-halo-1,2,3-triazoles. These air-tolerant reactions can be performed at room temperature with 1.25 equivalents of the respective 1,3-dipole relative to the alkyne component. Reactive 1-haloalkynes include propiolic amides, esters, ketones, and phosphonates. Post-functionalization of the halogenated azole products can be accomplished by using palladium-catalyzed cross-coupling reactions and by manipulation of reactive amide groups. The lack of catalysis observed with [Cp*RuCl(cod)] (Cp* = pentamethylcyclopentadienyl) is attributed to steric demands of the Cp* (η(5)-C5Me5) ligand in comparison to the parent Cp (η(5)-C5H5). This hypothesis is supported by the poor reactivity of [(η(5)-C5Me4CF3)RuCl(cod)], which serves as a an isosteric mimic of Cp* and as an isoelectronic analogue of Cp.
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Affiliation(s)
- James S. Oakdale
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-7562
| | - Rakesh K. Sit
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-7562
| | - Valery V. Fokin
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-7562
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Koufaki M, Fotopoulou T, Kapetanou M, Heropoulos GA, Gonos ES, Chondrogianni N. Microwave-assisted synthesis of 3,5-disubstituted isoxazoles and evaluation of their anti-ageing activity. Eur J Med Chem 2014; 83:508-15. [DOI: 10.1016/j.ejmech.2014.06.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 06/17/2014] [Accepted: 06/23/2014] [Indexed: 12/11/2022]
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