Spiro-imidazo[1,2-a]indeno[1,2-e]pyrazine-4-one derivatives are mixed AMPA and NMDA glycine-site antagonists active in vivo

Bioorg Med Chem Lett. 1999 Oct 18;9(20):2921-6. doi: 10.1016/s0960-894x(99)00502-8.

Abstract

Original spiro-imidazo[1,2-a]indeno[1,2-e]pyrazine-4-one derivatives were synthesised and led to the identification of 3e which showed good affinities for both the AMPA and the NMDA glycine-site receptors, and displayed good anticonvulsant effects after i.p. and i.v. administrations in the electroshock-induced convulsion assay in mice. The corresponding dextrorotatory isomer (+)-3e was notably more potent than the levorotatory isomer (-)-3e in in vitro and in vivo assays.

MeSH terms

  • Animals
  • Binding Sites
  • Excitatory Amino Acid Antagonists / chemistry
  • Excitatory Amino Acid Antagonists / metabolism
  • Excitatory Amino Acid Antagonists / pharmacology*
  • Glycine / metabolism*
  • Mice
  • Pyrazines / chemistry
  • Pyrazines / metabolism
  • Pyrazines / pharmacology*
  • Receptors, AMPA / antagonists & inhibitors*
  • Receptors, AMPA / metabolism
  • Receptors, N-Methyl-D-Aspartate / antagonists & inhibitors*
  • Receptors, N-Methyl-D-Aspartate / metabolism
  • Spiro Compounds / chemistry
  • Spiro Compounds / metabolism
  • Spiro Compounds / pharmacology*
  • Structure-Activity Relationship

Substances

  • Excitatory Amino Acid Antagonists
  • Pyrazines
  • Receptors, AMPA
  • Receptors, N-Methyl-D-Aspartate
  • Spiro Compounds
  • Glycine