Anthranilic acid-based Thumb Pocket 2 HCV NS5B polymerase inhibitors with sub-micromolar potency in the cell-based replicon assay

Bioorg Med Chem Lett. 2013 Dec 15;23(24):6879-85. doi: 10.1016/j.bmcl.2013.09.102. Epub 2013 Oct 8.

Abstract

Optimization efforts on the anthranilic acid-based Thumb Pocket 2 HCV NS5B polymerase inhibitors 1 and 2 resulted in the identification of multiple structural elements that contributed to improved cell culture potency. The additive effect of these elements resulted in compound 46, an inhibitor with enzymatic (IC50) and cell culture (EC50) potencies of less than 100 nanomolar.

Keywords: Direct-acting antiviral; HCV NS5B polymerase; Non-nucleoside inhibitor; Structure-based drug design; Thumb Pocket 2.

MeSH terms

  • Antiviral Agents / chemical synthesis
  • Antiviral Agents / chemistry*
  • Antiviral Agents / pharmacology
  • Binding Sites
  • Drug Design
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry*
  • Enzyme Inhibitors / pharmacology
  • Hepacivirus / enzymology*
  • Molecular Docking Simulation
  • Protein Binding
  • Protein Structure, Tertiary
  • Structure-Activity Relationship
  • Viral Nonstructural Proteins / antagonists & inhibitors*
  • Viral Nonstructural Proteins / metabolism
  • Virus Replication / drug effects
  • ortho-Aminobenzoates / chemical synthesis
  • ortho-Aminobenzoates / chemistry*
  • ortho-Aminobenzoates / pharmacology

Substances

  • Antiviral Agents
  • Enzyme Inhibitors
  • Viral Nonstructural Proteins
  • ortho-Aminobenzoates
  • anthranilic acid
  • NS-5 protein, hepatitis C virus