Synthesis and anticonvulsant activity of 4-(2-(2,6-dimethylphenylamino)-2-oxoethylamino)-N-(substituted)butanamides: a pharmacophoric hybrid approach

Bioorg Med Chem Lett. 2007 Jul 1;17(13):3712-5. doi: 10.1016/j.bmcl.2007.04.032. Epub 2007 Apr 13.

Abstract

A series of pharmacophoric hybrids of ameltolide-gamma-aminobutyric acid (GABA)-amides was designed, synthesized, and evaluated for their anticonvulsant and neurotoxic properties. Initial anticonvulsant screening was performed using intraperitoneal (ip) maximal electroshock-induced seizure (MES), subcutaneous pentylenetetrazole (scPTZ), and subcutaneous picrotoxin (scPIC)-induced seizure threshold tests. All the compounds had improved lipophilicity and the pharmacological activity profile confirmed their blood-brain barrier penetration. The titled compounds showed promising activity in scPIC screen indicating the involvement of GABA-mediation. Compound 4-(2-(2,6-dimethylaminophenylamino)-2-oxoethylamino)-N-(2,6-dimethylphenyl) butanamide (7) emerged as the most potent derivative effective in all the three animal models of seizure with no neurotoxicity at the anticonvulsant dose.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anticonvulsants / chemical synthesis*
  • Anticonvulsants / chemistry*
  • Anticonvulsants / pharmacology*
  • Blood-Brain Barrier
  • Chemistry, Pharmaceutical / methods
  • Drug Design
  • Ethanol / chemistry
  • Mice
  • Models, Chemical
  • Molecular Structure
  • Motor Activity / drug effects
  • Neurons / metabolism
  • Seizures / drug therapy*
  • Structure-Activity Relationship
  • gamma-Aminobutyric Acid / analogs & derivatives*
  • gamma-Aminobutyric Acid / chemical synthesis
  • gamma-Aminobutyric Acid / pharmacology

Substances

  • 4-(2-(2,6-dimethylaminophenylamino)-2-oxoethylamino)-N-(2,6-dimethylphenyl) butanamide
  • Anticonvulsants
  • Ethanol
  • gamma-Aminobutyric Acid