New 3-[4-(aryl)piperazin-1-yl]-1-(benzo[b]thiophen-3-yl)propane derivatives with dual action at 5-HT1A serotonin receptors and serotonin transporter as a new class of antidepressants

Eur J Med Chem. 2001 Jan;36(1):55-61. doi: 10.1016/s0223-5234(00)01198-3.

Abstract

A series of new 3-[4-(aryl)piperazin-1-yl]-1-(benzo[b]thiophen-3-yl)propane derivatives were synthesized in an attempt to find a new class of antidepressant drugs with dual activity at 5-HT1A serotonin receptors and serotonin transporter. Title compounds were evaluated for in vitro activity on 5-HT1A receptor and 5-HT transporter. They show high nanomolar affinity for both activities, and in particular, compounds 1-(5-chlorobenzo[b]thiophen-3-yl)-3-[4-(2-methoxyphenyl)piperazin-1-yl]propan-1-ol (7) and 1-(5-fluorobenzo[b]thiophen-3-yl)-3-[4-(2-methoxyphenyl)piperazin-1-yl]propan-1-ol (8) show values (nM) of K(i)=30 and 2.3 for 5-HT1A receptors and K(i)=30 and 12 for serotonin transporters, respectively. In GTPgammaS binding assays, compound 8 revealed antagonist properties to 5-HT1A receptors. Such a pharmacological profile could lead to potent antidepressant agents with new dual mechanism of action.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antidepressive Agents / chemical synthesis
  • Antidepressive Agents / pharmacology*
  • Binding, Competitive / drug effects
  • Carrier Proteins / drug effects*
  • Carrier Proteins / metabolism
  • Dose-Response Relationship, Drug
  • GTP-Binding Proteins / metabolism
  • Guanosine 5'-O-(3-Thiotriphosphate) / metabolism
  • Hippocampus / metabolism
  • In Vitro Techniques
  • Membrane Glycoproteins / drug effects*
  • Membrane Glycoproteins / metabolism
  • Membrane Transport Proteins*
  • Nerve Tissue Proteins*
  • Piperazines / chemical synthesis
  • Piperazines / metabolism
  • Piperazines / pharmacology*
  • Rats
  • Receptors, Serotonin / drug effects*
  • Receptors, Serotonin / metabolism
  • Receptors, Serotonin, 5-HT1
  • Selective Serotonin Reuptake Inhibitors / metabolism
  • Selective Serotonin Reuptake Inhibitors / pharmacology*
  • Serotonin Antagonists / metabolism
  • Serotonin Antagonists / pharmacology*
  • Serotonin Plasma Membrane Transport Proteins

Substances

  • Antidepressive Agents
  • Carrier Proteins
  • Membrane Glycoproteins
  • Membrane Transport Proteins
  • Nerve Tissue Proteins
  • Piperazines
  • Receptors, Serotonin
  • Receptors, Serotonin, 5-HT1
  • Serotonin Antagonists
  • Serotonin Plasma Membrane Transport Proteins
  • Serotonin Uptake Inhibitors
  • Slc6a4 protein, rat
  • Guanosine 5'-O-(3-Thiotriphosphate)
  • GTP-Binding Proteins