Synthesis and preliminary biological evaluation of potent and selective 2-(3-alkoxy-1-azetidinyl) quinolines as novel PDE10A inhibitors with improved solubility

Bioorg Med Chem. 2014 Dec 1;22(23):6570-6585. doi: 10.1016/j.bmc.2014.10.013.

Abstract

We report the discovery of a novel series of 2-(3-alkoxy-1-azetidinyl) quinolines as potent and selective PDE10A inhibitors. Structure-activity studies improved the solubility (pH 7.4) and maintained high PDE10A activity compared to initial lead compound 3, with select compounds demonstrating good oral bioavailability. X-ray crystallographic studies revealed two distinct binding modes to the catalytic site of the PDE10A enzyme. An ex vivo receptor occupancy assay in rats demonstrated that this series of compounds covered the target within the striatum.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Dose-Response Relationship, Drug
  • Humans
  • Models, Molecular
  • Molecular Structure
  • Phosphodiesterase Inhibitors / chemical synthesis
  • Phosphodiesterase Inhibitors / chemistry
  • Phosphodiesterase Inhibitors / pharmacology*
  • Phosphoric Diester Hydrolases / metabolism*
  • Quinolines / chemical synthesis
  • Quinolines / chemistry
  • Quinolines / pharmacology*
  • Solubility
  • Structure-Activity Relationship

Substances

  • Phosphodiesterase Inhibitors
  • Quinolines
  • PDE10A protein, human
  • Phosphoric Diester Hydrolases