Heterocyclic methylsulfone hydroxamic acid LpxC inhibitors as Gram-negative antibacterial agents

Bioorg Med Chem Lett. 2012 Nov 15;22(22):6832-8. doi: 10.1016/j.bmcl.2012.09.058. Epub 2012 Sep 24.

Abstract

The synthesis and antibacterial activity of heterocyclic methylsulfone hydroxamates is presented. Compounds in this series are potent inhibitors of the LpxC enzyme, a key enzyme involved in the production of lipopolysaccharide (LPS) found in the outer membrane of Gram-negative bacteria. SAR evaluation of compounds in this series revealed analogs with potent antibacterial activity against challenging Gram-negative species such as Pseudomonas aeruginosa and Klebsiella pneumoniae.

MeSH terms

  • Amidohydrolases / antagonists & inhibitors*
  • Amidohydrolases / metabolism
  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry*
  • Anti-Bacterial Agents / pharmacology
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry*
  • Enzyme Inhibitors / pharmacology
  • Gram-Negative Bacteria / drug effects*
  • Heterocyclic Compounds / chemistry
  • Hydroxamic Acids / chemical synthesis
  • Hydroxamic Acids / chemistry*
  • Hydroxamic Acids / pharmacology
  • Klebsiella pneumoniae / drug effects
  • Microbial Sensitivity Tests
  • Pseudomonas aeruginosa / drug effects
  • Pseudomonas aeruginosa / enzymology
  • Structure-Activity Relationship
  • Sulfones / chemistry

Substances

  • Anti-Bacterial Agents
  • Enzyme Inhibitors
  • Heterocyclic Compounds
  • Hydroxamic Acids
  • Sulfones
  • Amidohydrolases
  • LpxC deacetylase, Pseudomonas