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Pan M, Tong Y, Qiu X, Zeng X, Xiong B. One-pot synthesis of 3-trifluoromethylbenzo[ b][1,4]oxazines from CF 3-imidoyl sulfoxonium ylides with 2-bromophenols. Chem Commun (Camb) 2022; 58:12443-12446. [DOI: 10.1039/d2cc04863a] [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
A one-pot two-step fashion for the synthesis of 3-trifluoromethyl-1,4-benzoxazines from CF3-imidoyl sulfoxonium ylides and 2-bromophenols via lithium-bromide-promoted O–H insertion of sulfoxonium ylides and annulation has been demonstrated.
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Affiliation(s)
- Mingshi Pan
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Yixin Tong
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xiaodong Qiu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xiaobao Zeng
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Biao Xiong
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
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Straniero V, Zanotto C, Straniero L, Casiraghi A, Duga S, Radaelli A, De Giuli Morghen C, Valoti E. 2,6-Difluorobenzamide Inhibitors of Bacterial Cell Division Protein FtsZ: Design, Synthesis, and Structure-Activity Relationships. ChemMedChem 2017; 12:1303-1318. [PMID: 28586174 DOI: 10.1002/cmdc.201700201] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/30/2017] [Indexed: 11/08/2022]
Abstract
A wide variety of drug-resistant microorganisms are continuously emerging, restricting the therapeutic options for common bacterial infections. Antimicrobial agents that were originally potent are now no longer helpful, due to their weak or null activity toward these antibiotic-resistant bacteria. In addition, none of the recently approved antibiotics affect innovative targets, resulting in a need for novel drugs with innovative antibacterial mechanisms of action. The essential cell division protein filamentous temperature-sensitive Z (FtsZ) has emerged as a possible target, thanks to its ubiquitous expression and its homology to eukaryotic β-tubulin. In the latest years, several compounds were shown to interact with this prokaryotic protein and selectively inhibit bacterial cell division. Recently, our research group developed interesting derivatives displaying good antibacterial activities against methicillin-resistant Staphylococcus aureus, as well as vancomycin-resistant Enterococcus faecalis and Mycobacterium tuberculosis. The aim of the present study was to summarize the structure-activity relationships of differently substituted heterocycles, linked by a methylenoxy bridge to the 2,6-difluorobenzamide, and to validate FtsZ as the real target of this class of antimicrobials.
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Affiliation(s)
- Valentina Straniero
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, via Mangiagalli 25, 20133, Milano, Italy
| | - Carlo Zanotto
- Department of Medical Biotechnologies and Translational Medicine, Università degli Studi di Milano, via Vanvitelli 32, 20129, Milano, Italy
| | - Letizia Straniero
- Department of Biomedical Sciences, Humanitas University, via Manzoni 113, 2, 0089, Rozzano-Milano, Italy
| | - Andrea Casiraghi
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, via Mangiagalli 25, 20133, Milano, Italy
| | - Stefano Duga
- Department of Biomedical Sciences, Humanitas University, via Manzoni 113, 2, 0089, Rozzano-Milano, Italy.,Humanitas Clinical and Research Center, via Manzoni 56, 20089, Rozzano-Milano, Italy
| | - Antonia Radaelli
- Department of Pharmacological and Biomolecular Science, Università degli Studi di Milano, via Balzaretti 9, 20133, Milano, Italy.,Cellular and Molecular Pharmacology Section, National Research Council (CNR), Institute of Neurosciences, Università degli Studi di Milano, via Vanvitelli 32, 20129, Milano, Italy
| | | | - Ermanno Valoti
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, via Mangiagalli 25, 20133, Milano, Italy
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