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Synthesis and Characterization of Tetrahydropyran-Based Bacterial Topoisomerase Inhibitors with Antibacterial Activity against Gram-Negative Bacteria

2017; American Chemical Society; Volume: 60; Issue: 9 Linguagem: Inglês

10.1021/acs.jmedchem.6b01831

1520-4804

Jean‐Philippe Surivet, Cornelia Zumbrunn, Thierry Bruyère, Daniel Bur, Christopher Kohl, Hans H. Locher, Peter Seiler, Eric A. Ertel, Patrick Hess, Michel Enderlin-Paput, Stéphanie Enderlin-Paput, Jean-Christophe Gauvin, Azely Mirre, Christian Hubschwerlen, Daniel Ritz, Georg Rueedi,

Bioactive Compounds and Antitumor Agents

There is an urgent unmet medical need for novel antibiotics that are effective against a broad range of bacterial species, especially multidrug resistant ones. Tetrahydropyran-based inhibitors of bacterial type II topoisomerases (DNA gyrase and topoisomerase IV) display potent activity against Gram-positive pathogens and no target-mediated cross-resistance with fluoroquinolones. We report our research efforts aimed at expanding the antibacterial spectrum of this class of molecules toward difficult-to-treat Gram-negative pathogens. Physicochemical properties (polarity and basicity) were considered to guide the design process. Dibasic tetrahydropyran-based compounds such as 6 and 21 are potent inhibitors of both DNA gyrase and topoisomerase IV, displaying antibacterial activities against Gram-positive and Gram-negative pathogens (Staphylococcus aureus, Enterobacteriaceae, Pseudomonas aeruginosa, and Acinetobacter baumannii). Compounds 6 and 21 are efficacious in clinically relevant murine infection models.