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Rajabalinia S, Hoford S, Dudding T. Streamlining Fluoroalkenyl Arene Synthesis Illuminated with Mechanistic Insights. ACS OMEGA 2024; 9:21152-21163. [PMID: 38764685 PMCID: PMC11097363 DOI: 10.1021/acsomega.4c01055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/22/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
Fluorinated compounds are a staple of modern-day chemical innovation, and efficient strategies for their synthesis are highly valuable. In this chemical space, fluoroalkenes continue to be the object of much interest across diverse fields, including drug development and pharmaceuticals with active roles as bioisosteres. Herein, in expanding chemists' synthetic toolbox for constructing valuable organofluorine compounds, we report a "pipeline" strategy for the synthesis of fluorinated olefins, viz., gem-difluoroalkenyl and monofluoroalkenyl arenes with high E-isomeric selectivity. The advantages of this streamlined synthetic protocol include mild reaction conditions, operational simplicity, broad substrate scope, and good to excellent yields, even at gram scales. Critical to this robust procedure is the use of widely available and inexpensive "scavenger" solid-support Merrifield peptide resin for removing phosphine impurities. Further computational investigations offering clarity into this reactivity are disclosed.
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Affiliation(s)
- Sanaz Rajabalinia
- Department of Chemistry, Brock University, St. Catharines, Ontario L2S 3A1, Canada
| | - Sabrina Hoford
- Department of Chemistry, Brock University, St. Catharines, Ontario L2S 3A1, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, Ontario L2S 3A1, Canada
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2
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de Carvalho RL, Wood JM, Almeida RG, Berry NG, da Silva Júnior EN, Bower JF. The Synthesis and Reactivity of Naphthoquinonynes. Angew Chem Int Ed Engl 2024; 63:e202400188. [PMID: 38445547 DOI: 10.1002/anie.202400188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/07/2024]
Abstract
The first systematic exploration of the synthesis and reactivity of naphthoquinonynes is described. Routes to two regioisomeric Kobayashi-type naphthoquinonyne precursors have been developed, and the reactivity of the ensuing 6,7- and 5,6-aryne intermediates has been investigated. Remarkably, these studies have revealed that a broad range of cycloadditions, nucleophile additions and difunctionalizations can be achieved while maintaining the integrity of the highly sensitive quinone unit. The methodologies offer a powerful diversity oriented approach to C6 and C7 functionalized naphthoquinones, which are typically challenging to access. From a reactivity viewpoint, the study is significant because it demonstrates that aryne-based functionalizations can be utilized strategically in the presence of highly reactive and directly competing functionality.
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Affiliation(s)
- Renato L de Carvalho
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais - UFMG, 31270-901, Belo, Horizonte - MG, Brazil
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - James M Wood
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, United Kingdom
- The Ferrier Research Institute, Victoria University of Wellington, Wellington, 6012, New Zealand
| | - Renata G Almeida
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais - UFMG, 31270-901, Belo, Horizonte - MG, Brazil
| | - Neil G Berry
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
| | - Eufrânio N da Silva Júnior
- Instituto de Ciências Exatas, Departamento de Química, Universidade Federal de Minas Gerais - UFMG, 31270-901, Belo, Horizonte - MG, Brazil
| | - John F Bower
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, United Kingdom
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3
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Yoshimura A, Ngo K, Mironova IA, Gardner ZS, Rohde GT, Ogura N, Ueki A, Yusubov MS, Saito A, Zhdankin VV. Pseudocyclic Arylbenziodoxaboroles as Water-Triggered Aryne Precursors in Reactions with Organic Sulfides. Org Lett 2024; 26:1891-1895. [PMID: 38408024 DOI: 10.1021/acs.orglett.4c00197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Pseudocyclic arylbenziodoxaboroles are unique aryne precursors under neutral aqueous conditions that selectively react with organic sulfides, forming the corresponding sulfonium salts. This reaction is compatible with various substituents (alkyl, halogen, CN, NO2, CHO, and cyclopropyl) in the aromatic ring or alkyl group of the sulfide. Similar reactions of sulfoxides afford o-hydroxy-substituted sulfonium salts. The structures of key products were confirmed by X-ray analysis.
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Affiliation(s)
- Akira Yoshimura
- Faculty of Pharmaceutical Sciences, Aomori University, 2-3-1 Kobata, Aomori 030-0943, Japan
| | - Kim Ngo
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Irina A Mironova
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Lenina av., 30, 634050 Tomsk, Russia
| | - Zachary S Gardner
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | | | - Nami Ogura
- Faculty of Pharmaceutical Sciences, Aomori University, 2-3-1 Kobata, Aomori 030-0943, Japan
| | - Akiharu Ueki
- Faculty of Pharmaceutical Sciences, Aomori University, 2-3-1 Kobata, Aomori 030-0943, Japan
| | - Mekhman S Yusubov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Lenina av., 30, 634050 Tomsk, Russia
| | - Akio Saito
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
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Erdoğan M, Comert Onder F. Synthesis, anticancer activity and molecular modeling study of novel substituted triazole linked tetrafluoronaphthalene hybrid derivatives. J Biomol Struct Dyn 2023:1-20. [PMID: 37676264 DOI: 10.1080/07391102.2023.2252914] [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: 06/13/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023]
Abstract
To create some novel anticancer molecules, a library of novel series of various triazoles linked to the hydroxyl group of 5,6,7,8-tetrafluoronaphthalen-1-ol (3) was designed and synthesized via CuAAC reaction 'Click Chemistry' of tetrafluoronaphthalene based terminal alkyne with substituted organic azides. The structural characterizations of the targeted Click products 9-18 were confirmed by FTIR, 1H NMR, 19F NMR, 13C NMR and HRMS spectroscopy. Synthesized compounds were tested in two triple negative breast cancer (TNBC) cell lines to understand their anticancer potentials. According to our findings, compounds 14 and 13 showed high cytotoxicity in BT549 cells at 20 μM and 30 μM, respectively. Moreover, these compounds blocked the migration of BT549 cells. In the MDA-MB-231 cell line, compound 18 exhibited high cytotoxicity and can block cell migration for 24 h. Molecular docking study with synthesized novel compounds was performed by Glide/SP method against SphK1 drug target. Furthermore, molecular dynamics (MD) simulation was carried out for the compounds 12-14 and 18. The compounds 13 and 14 may be potential inhibitor candidates in place of a reference inhibitor. A pharmacophore model was generated with the most potent compound 14, and the approved drugs were screened using the modules of Discovery Studio to find similar drugs. Consequently, this comprehensive study encompassing design, synthesis, in vitro and in silico analyses were correlated with the structure-activity relationship between compounds. The findings have the potential to unveil promising drug candidates for future studies.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Musa Erdoğan
- Department of Food Engineering, Faculty of Engineering and Architecture, Kafkas University, Kars, Türkiye
| | - Ferah Comert Onder
- Department of Medical Biology, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale, Türkiye
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Wang X, Frings M, Rissanen K, Bolm C. Synthesis of o-Sulfinylanilines from N-Alkyl Sulfoximines and Arynes. J Org Chem 2023; 88:2666-2669. [PMID: 36701544 DOI: 10.1021/acs.joc.3c00012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
N-Alkyl sulfoximines react with arynes generated in situ under mild conditions providing o-sulfinylanilines in good yields. The transformation is characterized by a broad substrate scope and a good functional group tolerance. The structure of a reaction product was confirmed by single-crystal X-ray diffraction.
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Affiliation(s)
- Xianliang Wang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Marcus Frings
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, FI-40014 Jyväskylä, Finland
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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Krishna RB, Moncy SH, Mohan C. Arynes as synthetic linchpins towards the construction of diversely functionalized natural product skeletons. Org Biomol Chem 2023; 21:479-488. [PMID: 36514934 DOI: 10.1039/d2ob01975b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Arynes are a privileged class of reactive intermediates in synthetic organic chemistry, and their unusual reactivities have been the subject of engrossing research interest. Recently, there are many reports on novel aryne-based synthetic innovations as a linchpin approach to accomplish the total synthesis of structurally diverse natural products or their derivatives in a racemic and enantiopure fashion. This review provides an overview of the literature on synthetic strategies, employing arynes as crucial intermediates to construct architecturally intriguing bioactive natural products/derivatives in a period of 2019 to 2022. This study highlights the need to investigate the effective synthesis and search for new biological uses of highly functionalized natural product skeletons.
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Affiliation(s)
- R Bharath Krishna
- Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Kottayam 686560, India
| | - Shirin Hanna Moncy
- Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Kottayam 686560, India
| | - Chithra Mohan
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, India.
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