Discovery and structure-activity relationships of 2-benzylpyrrolidine-substituted aryloxypropanols as calcium-sensing receptor antagonists

Bioorg Med Chem Lett. 2005 Feb 15;15(4):1225-8. doi: 10.1016/j.bmcl.2004.11.071.

Abstract

A structure-activity relationship study of the amine portion of the calcilytic compound NPS-2143 resulted in the discovery of substituted 2-benzylpyrrolidines as replacements for the 1,1-dimethyl-2-naphthalen-2-yl-ethylamine. When compared to NPS-2143, a newly discovered compound, 3h, exhibited similar potency as a calcium-sensing receptor (CaR) antagonist and a superior human ether-a-go-go related gene (hERG) profile.

MeSH terms

  • Calcium Signaling / drug effects
  • ERG1 Potassium Channel
  • Ether-A-Go-Go Potassium Channels
  • Humans
  • Inhibitory Concentration 50
  • Naphthalenes / pharmacology
  • Patch-Clamp Techniques
  • Potassium Channels, Voltage-Gated / antagonists & inhibitors
  • Propanols / chemical synthesis*
  • Propanols / pharmacology
  • Receptors, Calcium-Sensing / antagonists & inhibitors*
  • Structure-Activity Relationship

Substances

  • ERG1 Potassium Channel
  • Ether-A-Go-Go Potassium Channels
  • KCNH2 protein, human
  • N-(2-hydroxy-3-(2-cyano-3-chlorophenoxy)propyl)-1,1-dimethyl-2-(2-nephthyl)ethylamine
  • Naphthalenes
  • Potassium Channels, Voltage-Gated
  • Propanols
  • Receptors, Calcium-Sensing