Abstract
The discovery and optimisation of a new class of benzothiazole small molecules that inhibit bacterial DNA gyrase and topoisomerase IV are described. Antibacterial properties have been demonstrated by activity against DNA gyrase ATPase and potent activity against Staphylococcus aureus, Enterococcus faecalis, Streptococcus pyogenes and Haemophilus influenzae. Further refinements to the scaffold designed to enhance drug-likeness included analogues bearing an α-substituent to the carboxylic acid group, resulting in excellent solubility and favourable pharmacokinetic properties.
Keywords:
Antibacterial; DNA gyrase; Topoisomerase.
Copyright © 2013 Elsevier Ltd. All rights reserved.
MeSH terms
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Animals
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Anti-Bacterial Agents / chemical synthesis
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Anti-Bacterial Agents / chemistry
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Anti-Bacterial Agents / pharmacokinetics
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Anti-Bacterial Agents / pharmacology
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Benzothiazoles / chemical synthesis
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Benzothiazoles / chemistry*
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Benzothiazoles / pharmacology*
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DNA Gyrase / chemistry
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DNA Gyrase / metabolism
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DNA Topoisomerase IV / antagonists & inhibitors*
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DNA Topoisomerase IV / metabolism
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Drug Design*
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Enterococcus faecalis / drug effects
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Enterococcus faecalis / enzymology
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Enzyme Activation / drug effects
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Haemophilus influenzae / drug effects
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Haemophilus influenzae / enzymology
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Half-Life
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Isonipecotic Acids / chemistry*
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Mice
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Microbial Sensitivity Tests
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Rats
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Staphylococcus aureus / drug effects
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Staphylococcus aureus / enzymology
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Streptococcus pyogenes / drug effects
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Streptococcus pyogenes / enzymology
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Topoisomerase II Inhibitors / chemical synthesis*
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Topoisomerase II Inhibitors / chemistry
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Topoisomerase II Inhibitors / pharmacokinetics
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Topoisomerase II Inhibitors / pharmacology*
Substances
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Anti-Bacterial Agents
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Benzothiazoles
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Isonipecotic Acids
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Topoisomerase II Inhibitors
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DNA Topoisomerase IV
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DNA Gyrase
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benzothiazole