Novel atypical antipsychotic agents: rational design, an efficient palladium-catalyzed route, and pharmacological studies

J Med Chem. 2005 Mar 24;48(6):1705-8. doi: 10.1021/jm049629t.

Abstract

Using rational drug design to develop atypical antipsychotic drug candidates, we generated novel and metabolically stable pyrrolobenzazepines with an optimized pK(i) 5-HT(2A)/D(2) ratio. 5a, obtained by a new palladium-catalyzed three-step synthesis, was selected for further pharmacological and biochemical investigations and showed atypical antipsychotic properties in vivo. 5a was active on conditioned avoidance response at 0.56 mg/kg, it had low cataleptic potential and proved to be better than ST1899, clozapine, and olanzapine, representing a new clinical candidate.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antipsychotic Agents / chemical synthesis*
  • Antipsychotic Agents / chemistry
  • Antipsychotic Agents / pharmacology
  • Avoidance Learning / drug effects
  • Benzazepines / chemical synthesis*
  • Benzazepines / chemistry
  • Benzazepines / pharmacology
  • Binding Sites
  • Catalepsy / chemically induced
  • Catalysis
  • Cell Line
  • Crystallography, X-Ray
  • Dopamine D2 Receptor Antagonists
  • Drug Design
  • In Vitro Techniques
  • Mice
  • Models, Molecular
  • Molecular Conformation
  • Palladium*
  • Pyrroles / chemical synthesis*
  • Pyrroles / chemistry
  • Pyrroles / pharmacology
  • Radioligand Assay
  • Rats
  • Receptor, Serotonin, 5-HT2A / chemistry
  • Receptors, Dopamine D2 / chemistry
  • Serotonin 5-HT2 Receptor Antagonists
  • Structure-Activity Relationship

Substances

  • Antipsychotic Agents
  • Benzazepines
  • Dopamine D2 Receptor Antagonists
  • Pyrroles
  • Receptor, Serotonin, 5-HT2A
  • Receptors, Dopamine D2
  • Serotonin 5-HT2 Receptor Antagonists
  • Palladium