Chemical Name:1,3-Dihydro-5-[3-[4-(phenylmethyl)-1-2H-benzimidazol-2-
one
Biological Activity:
Orally active, subtype-selective
NR1A/NR2B NMDA receptor antagonist (IC50 values are 5.3, 35000 and
> 100000 nM for NR1A/2B, NR1A/2A and NR1A/2C receptor subtypes
respectively). Potentiates the effect of L-DOPA in 6-OHDA-lesioned rats following oral administration.
Wrightet
al (2000) Subtype-selective N-methyl-D-aspartate receptor antagonists: synthesis and biological evaluation of
1-(heteroarylalkynyl)-4-benzylpiperidines. J.Med.Chem. 43 3408. Rogeret al (2003) Synthesis, radiosynthesis and in vivo evaluation of
5-[3-(4-benzylpiperidin-1-yl)prop-1-ynyl]-1,3-dihydrobenzoimidazol-2-[11C]one,
as a potent NR1A/2B subtype selective NMDA PET radiotracer.
Bioorg.Med.Chem. 11 5401.
Displays 26-fold and > 440-fold selectivity over kainate and NMDA receptors respectively. Neuro-protective; delays neuronal death in a global ischaemia model and cerebral infarction in a focal ischaemia model.