Design and synthesis of 3,4-dihydro-1H-[1]-benzothieno[2,3-c]pyran and 3,4-dihydro-1H-pyrano[3,4-b]benzofuran derivatives as non-nucleoside inhibitors of HCV NS5B RNA dependent RNA polymerase

Bioorg Med Chem Lett. 2006 Jan 15;16(2):457-60. doi: 10.1016/j.bmcl.2005.08.114. Epub 2005 Nov 7.

Abstract

A novel class of HCV NS5B RNA dependent RNA polymerase inhibitors containing 3,4-dihydro-1H-[1]-benzothieno[2,3-c]pyran and 3,4-dihydro-1H-pyrano[3,4-b]benzofuran scaffolds were designed and synthesized. Optimization of the alkyl substituent in the pyran ring showed preference for an n-propyl group, while 5,8-disubstitution pattern is preferred for the aromatic region. Analog 19 displayed potent activity with an IC(50) of 50 nM against HCV NS5B enzyme and was selective over a panel of polymerases.

MeSH terms

  • Animals
  • Benzofurans* / chemical synthesis
  • Benzofurans* / chemistry
  • Benzofurans* / pharmacology
  • Cell Line, Tumor
  • Chlorocebus aethiops
  • Drug Design
  • Drug Evaluation, Preclinical
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Humans
  • Molecular Structure
  • Pyrans* / chemical synthesis
  • Pyrans* / chemistry
  • Pyrans* / pharmacology
  • RNA-Dependent RNA Polymerase / antagonists & inhibitors*
  • RNA-Dependent RNA Polymerase / chemistry
  • Structure-Activity Relationship
  • Vero Cells
  • Viral Nonstructural Proteins / antagonists & inhibitors*
  • Viral Nonstructural Proteins / chemistry

Substances

  • Benzofurans
  • Enzyme Inhibitors
  • Pyrans
  • Viral Nonstructural Proteins
  • NS-5 protein, hepatitis C virus
  • RNA-Dependent RNA Polymerase