1. New antibacterial agents: Hybrid bioisoster derivatives as potential E. coli FabH inhibitors.
- Author
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Segretti ND, Serafim RA, Segretti MC, Miyata M, Coelho FR, Augusto O, and Ferreira EI
- Subjects
- 3-Oxoacyl-(Acyl-Carrier-Protein) Synthase, Acetyltransferases metabolism, Animals, Anti-Bacterial Agents chemical synthesis, Anti-Bacterial Agents toxicity, Binding Sites, Candida albicans drug effects, Catalytic Domain, Cell Survival drug effects, Chlorocebus aethiops, Enzyme Inhibitors chemical synthesis, Enzyme Inhibitors toxicity, Escherichia coli drug effects, Escherichia coli Proteins metabolism, Fatty Acid Synthase, Type II antagonists & inhibitors, Fatty Acid Synthase, Type II metabolism, Hydrogen Bonding, Microbial Sensitivity Tests, Molecular Docking Simulation, Oxadiazoles chemical synthesis, Oxadiazoles chemistry, Oxadiazoles toxicity, Static Electricity, Structure-Activity Relationship, Vero Cells, Acetyltransferases antagonists & inhibitors, Anti-Bacterial Agents chemistry, Enzyme Inhibitors chemistry, Escherichia coli enzymology, Escherichia coli Proteins antagonists & inhibitors
- Abstract
The development of resistance to antibiotics by microorganisms is a major problem for the treatment of bacterial infections worldwide, and therefore, it is imperative to study new scaffolds that are potentially useful in the development of new antibiotics. In this regard, we propose the design, synthesis and biological evaluation of hybrid sulfonylhydrazone bioisosters/furoxans with potential antibacterial (Escherichia coli) activity. The most active compound of the series, (E)-3-methyl-4-((2-tosylhydrazono)methyl)-1,2,5-oxadiazole 2-oxide, with a MIC=0.36μM, was not cytotoxic when tested on Vero cells (IC50>100μM). To complement the in vitro screening, we also studied the interaction of the test compounds with β-ketoacyl acyl carrier protein synthase (FabH), the target for the parent compounds, and we observed three important hydrogen-bonding interactions with two important active site residues in the catalytic site of the enzyme, providing complementary evidence to support the target of the new hybrid molecules., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
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