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Chen H, Farizyan M, Gemmeren M. Regioselective Olefination of 3‐Substituted Five‐Membered Heteroarenes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000659] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hao Chen
- Organisch‐Chemisches Institut Westfälische Wilhelms‐Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Mirxan Farizyan
- Organisch‐Chemisches Institut Westfälische Wilhelms‐Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Manuel Gemmeren
- Organisch‐Chemisches Institut Westfälische Wilhelms‐Universität Münster Corrensstraße 40 48149 Münster Germany
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Chen H, Farizyan M, Ghiringhelli F, van Gemmeren M. Sterically Controlled C-H Olefination of Heteroarenes. Angew Chem Int Ed Engl 2020; 59:12213-12220. [PMID: 32267990 PMCID: PMC7384109 DOI: 10.1002/anie.202004521] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Indexed: 01/06/2023]
Abstract
The regioselective functionalization of heteroarenes is a highly attractive synthetic target due to the prevalence of multiply substituted heteroarenes in nature and bioactive compounds. Some substitution patterns remain challenging: While highly efficient methods for the C2-selective olefination of 3-substituted five-membered heteroarenes have been reported, analogous methods to access the 5-olefinated products have remained limited by poor regioselectivities and/or the requirement to use an excess of the valuable heteroarene starting material. Herein we report a sterically controlled C-H olefination using heteroarenes as the limiting reagent. The method enables the highly C5-selective olefination of a wide range of heteroarenes and is shown to be useful in the context of late-stage functionalization.
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Affiliation(s)
- Hao Chen
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim an der RuhrGermany
| | - Mirxan Farizyan
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim an der RuhrGermany
| | - Francesca Ghiringhelli
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Manuel van Gemmeren
- Max Planck Institute for Chemical Energy ConversionStiftstraße 34–3645470Mülheim an der RuhrGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
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Chen H, Farizyan M, Ghiringhelli F, Gemmeren M. Sterically Controlled C−H Olefination of Heteroarenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004521] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hao Chen
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
| | - Mirxan Farizyan
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
| | - Francesca Ghiringhelli
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Manuel Gemmeren
- Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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Chen SY, Sahoo SK, Huang CL, Chan TH, Cheng YJ. Pd(II)-Catalyzed Direct Dehydrogenative Mono- and Diolefination of Selenophenes. Org Lett 2020; 22:2318-2322. [PMID: 32118452 DOI: 10.1021/acs.orglett.0c00506] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pd(II)-catalyzed dehydrogenative Heck olefination of selenophenes with a broad olefinic substrate scope and high functional group tolerance is demonstrated. Carbonyl-substituted and phenyl-substituted olefins with electron-donating (D) and electron-accepting (A) groups can be regioselectively installed at C2 of the selenophene. The 2-olefinated selenophenes can subsequently undergo a second oxidative olefination to rapidly produce a new class of symmetrical D-π-D or unsymmetrical D-π-A 2,5-diolefinated selenophene materials.
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Gribanov PS, Golenko YD, Topchiy MA, Minaeva LI, Asachenko AF, Nechaev MS. Stannylation of Aryl Halides, Stille Cross-Coupling, and One-Pot, Two-Step Stannylation/Stille Cross-Coupling Reactions under Solvent-Free Conditions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701463] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pavel S. Gribanov
- A. V. Topchiev Institute of Petrochemical Synthesis; Russian Academy of Sciences; Lenynsky Prospect 29 119991 Moscow Russian Federation
- M. V. Lomonosov Moscow State University; Leninskie Gory 1 (3) 119991 Moscow Russian Federation
| | - Yulia D. Golenko
- M. V. Lomonosov Moscow State University; Leninskie Gory 1 (3) 119991 Moscow Russian Federation
| | - Maxim A. Topchiy
- A. V. Topchiev Institute of Petrochemical Synthesis; Russian Academy of Sciences; Lenynsky Prospect 29 119991 Moscow Russian Federation
- M. V. Lomonosov Moscow State University; Leninskie Gory 1 (3) 119991 Moscow Russian Federation
| | - Lidiya I. Minaeva
- Peoples' Friendship University of Russia; Miklukho-Maklay St., 6 117198 Moscow Russian Federation
| | - Andrey F. Asachenko
- A. V. Topchiev Institute of Petrochemical Synthesis; Russian Academy of Sciences; Lenynsky Prospect 29 119991 Moscow Russian Federation
- M. V. Lomonosov Moscow State University; Leninskie Gory 1 (3) 119991 Moscow Russian Federation
| | - Mikhail S. Nechaev
- A. V. Topchiev Institute of Petrochemical Synthesis; Russian Academy of Sciences; Lenynsky Prospect 29 119991 Moscow Russian Federation
- M. V. Lomonosov Moscow State University; Leninskie Gory 1 (3) 119991 Moscow Russian Federation
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Benmansour F, Eydoux C, Querat G, de Lamballerie X, Canard B, Alvarez K, Guillemot JC, Barral K. Novel 2-phenyl-5-[(E)-2-(thiophen-2-yl)ethenyl]-1,3,4-oxadiazole and 3-phenyl-5-[(E)-2-(thiophen-2-yl)ethenyl]-1,2,4-oxadiazole derivatives as dengue virus inhibitors targeting NS5 polymerase. Eur J Med Chem 2015; 109:146-56. [PMID: 26774922 DOI: 10.1016/j.ejmech.2015.12.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 10/22/2022]
Abstract
Using a functional high-throughput screening (HTS) and subsequent SAR studies, we have discovered a novel series of non-nucleoside dengue viral polymerase inhibitors. We report the elaboration of SAR around hit compound 1 as well as the synthesis and antiviral evaluation of 3-phenyl-5-[(E)-2-(thiophen-2-yl)ethenyl]-1,2,4-oxadiazole and 5-phenyl-2-[2-(2-thienyl)ethenyl]-1,3,4-oxadiazole analogues derived from a rapid and easily accessible chemical pathway. A large number of compounds prepared by this method were shown to possess in vitro activity against the polymerase of dengue virus. The most potent inhibitors were tested against Dengue virus clinical isolates on infected cells model and exhibit submicromolar activity on the four dengue virus serotypes.
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Affiliation(s)
- Fatiha Benmansour
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
| | - Cécilia Eydoux
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
| | - Gilles Querat
- UMR190, Emergence des Pathologies Virales, Aix-Marseille University, IRD French Institute of Research for Development, EHESP French School of Public Health, 27 Boulevard Jean Moulin, Marseille 13005, France
| | - Xavier de Lamballerie
- UMR190, Emergence des Pathologies Virales, Aix-Marseille University, IRD French Institute of Research for Development, EHESP French School of Public Health, 27 Boulevard Jean Moulin, Marseille 13005, France
| | - Bruno Canard
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
| | - Karine Alvarez
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
| | - Jean-Claude Guillemot
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
| | - Karine Barral
- Aix-Marseille Université, AFMB, AD2P, UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; CNRS, AFMB UMR 7257, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France.
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Mizuhara T. Structure–Activity Relationship Study of PD 404182 Derivatives for the Highly Potent Anti-HIV Agents. DEVELOPMENT OF NOVEL ANTI-HIV PYRIMIDOBENZOTHIAZINE DERIVATIVES 2013. [PMCID: PMC7122882 DOI: 10.1007/978-4-431-54445-6_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Using facile synthetic approaches to pyrimido[1,2-c][1,3]benzothiazin-6-imines and related tricyclic derivatives, the parallel structural optimizations were investigated for the central 1,3-thiazin-2-imine core, the benzene part, and the cyclic amidine part of PD 404182. Replacement of the 6-6-6 pyrimido[1,2-c][1,3]benzothiazin-6-imine framework with 5-6-6 or 6-6-5 derivatives led to a significant loss of anti-HIV activity, and introduction of a hydrophobic group at the 9- or 10-positions improved the potency. The most potent PD 404182 derivative exerts anti-HIV effects at an early stage of viral infection including binding and fusion.
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Mizuhara T, Oishi S, Ohno H, Shimura K, Matsuoka M, Fujii N. Structure-activity relationship study of pyrimido[1,2-c][1,3]benzothiazin-6-imine derivatives for potent anti-HIV agents. Bioorg Med Chem 2012; 20:6434-41. [PMID: 23022280 DOI: 10.1016/j.bmc.2012.08.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 08/22/2012] [Accepted: 08/22/2012] [Indexed: 12/21/2022]
Abstract
3,4-Dihydro-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine (PD 404182) is an antiretroviral agent with submicromolar inhibitory activity against human immunodeficiency virus-1 (HIV-1) and HIV-2 infection. In the current study, the structure-activity relationships of accessory groups at the 3- and 9-positions of pyrimido[1,2-c][1,3]benzothiazin-6-imine were investigated for the development of more potent anti-HIV agents. Several different derivatives containing a 9-aryl group were designed and synthesized using Suzuki-Miyaura cross-coupling and Ullmann coupling reactions. Modification of the m-methoxyphenyl or benzo[d][1,3]dioxol-5-yl group resulted in improved anti-HIV activity. In addition, the 2,4-diazaspiro[5.5]undec-2-ene-fused benzo[e][1,3]thiazine derivatives were designed and tested for their anti-HIV activities. The most potent 9-(benzo[d][1,3]dioxol-5-yl) derivative was two-threefold more effective against several strains of HIV-1 and HIV-2 than the parent compound, PD 404182.
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Affiliation(s)
- Tsukasa Mizuhara
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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