Biarylcarboxybenzamide derivatives as potent vanilloid receptor (VR1) antagonistic ligands

Bioorg Med Chem Lett. 2005 Feb 1;15(3):631-4. doi: 10.1016/j.bmcl.2004.11.033.

Abstract

Seventeen biarylcarboxybenzamide derivatives were prepared for the study of their agonistic/antagonistic activities to the vanilloid receptor (VR1) in rat DRG neurons. The replacement of the piperazine moiety of the lead compound 1 with phenyl ring showed quite enhanced antagonistic activity. Among the prepared derivatives, N-(4-tert-butylphenyl)-4-pyridine-2-yl-benzamide (2, IC(50)=31 nM) and N-(4-tert-butylphenyl)-4-(3-methylpyridine-2-yl)benzamide (3g, IC(50)=31 nM), showed 5-fold higher antagonistic activity than 1 in (45)Ca(2+)-influx assay.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Benzamides / chemical synthesis*
  • Benzamides / pharmacology*
  • Calcium Signaling / drug effects
  • Ganglia, Spinal / cytology
  • Inhibitory Concentration 50
  • Ion Channels / agonists
  • Ion Channels / antagonists & inhibitors*
  • Ligands
  • Neurons
  • Rats
  • Receptors, Drug / antagonists & inhibitors
  • Structure-Activity Relationship
  • TRPV Cation Channels

Substances

  • Benzamides
  • Ion Channels
  • Ligands
  • Receptors, Drug
  • TRPV Cation Channels
  • Trpv1 protein, rat