Discovery and Characterization of a Class of Pyrazole Inhibitors of Bacterial Undecaprenyl Pyrophosphate Synthase

J Med Chem. 2016 Aug 11;59(15):7299-304. doi: 10.1021/acs.jmedchem.6b00746. Epub 2016 Jul 20.


Undecaprenyl pyrophosphate synthase (UppS) is an essential enzyme in bacterial cell wall synthesis. Here we report the discovery of Staphylococcus aureus UppS inhibitors from an Encoded Library Technology screen and demonstrate binding to the hydrophobic substrate site through cocrystallography studies. The use of bacterial strains with regulated uppS expression and inhibitor resistant mutant studies confirmed that the whole cell activity was the result of UppS inhibition, validating UppS as a druggable antibacterial target.

MeSH terms

  • Alkyl and Aryl Transferases / antagonists & inhibitors*
  • Alkyl and Aryl Transferases / metabolism
  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Microbial Sensitivity Tests
  • Models, Molecular
  • Molecular Structure
  • Pyrazoles / chemical synthesis
  • Pyrazoles / chemistry
  • Pyrazoles / pharmacology*
  • Staphylococcus aureus / drug effects*
  • Staphylococcus aureus / enzymology
  • Structure-Activity Relationship


  • Anti-Bacterial Agents
  • Enzyme Inhibitors
  • Pyrazoles
  • Alkyl and Aryl Transferases
  • undecaprenyl pyrophosphate synthetase