SAR and biological evaluation of SEN12333/WAY-317538: Novel alpha 7 nicotinic acetylcholine receptor agonist

Bioorg Med Chem. 2009 Jul 15;17(14):5247-58. doi: 10.1016/j.bmc.2009.05.040. Epub 2009 May 21.

Abstract

Alpha 7 nicotinic acetylcholine receptor (alpha(7) nAChR) agonists are promising therapeutic candidates for the treatment of cognitive impairment associated with a variety of disorders including Alzheimer's disease and schizophrenia. Alpha 7 nAChRs are expressed in brain regions associated with cognitive function, regulate cholinergic neurotransmission and have been shown to be down regulated in both schizophrenia and Alzheimer's disease. Herein we report a novel, potent small molecule agonist of the alpha 7 nAChR, SEN12333/WAY-317538. This compound is a selective agonist of the alpha(7) nAChR with excellent in vitro and in vivo profiles, excellent brain penetration and oral bioavailability, and demonstrates in vivo efficacy in multiple behavioural cognition models. The SAR and biological evaluation of this series of compounds are discussed.

MeSH terms

  • Alzheimer Disease / drug therapy
  • Animals
  • Binding, Competitive
  • Calcium / metabolism
  • Cell Line
  • Cognition / drug effects
  • Electrophysiology
  • Humans
  • Morpholines / chemistry*
  • Morpholines / pharmacokinetics
  • Morpholines / pharmacology*
  • Nicotinic Agonists / chemistry*
  • Nicotinic Agonists / pharmacokinetics
  • Nicotinic Agonists / pharmacology*
  • Pyridines / chemistry*
  • Pyridines / pharmacokinetics
  • Pyridines / pharmacology*
  • Rats
  • Rats, Wistar
  • Receptors, Nicotinic / metabolism*
  • Schizophrenia / drug therapy
  • Structure-Activity Relationship
  • alpha7 Nicotinic Acetylcholine Receptor

Substances

  • 5-morpholin-4-ylpentanoic acid (4-pyridin-3-ylphenyl)amide
  • Chrna7 protein, human
  • Chrna7 protein, rat
  • Morpholines
  • Nicotinic Agonists
  • Pyridines
  • Receptors, Nicotinic
  • alpha7 Nicotinic Acetylcholine Receptor
  • Calcium