摘要：NPS 1506 [3-fluoro-γ-(3-fluorophenyl)- N -methylbenzenepropamine] is representative of a non-psychotomimetic class of N -methyl- D -aspartate (NMDA) receptor antagonists. [11C]NPS 1506 was prepared at high radiochemical purity (>98%) with a specific activity of around 50 GBq/μmol at the end of synthesis by methylation of the desmethyl precursor with [11C]methyl iodide in the presence of NaH. Biodistribution of [11C]NPS 1506 in mice and rat demonstrated that uptake into the brain was rapid and occurred at high levels. [11C]NPS 1506 showed no appreciable specific binding in rodent brains under in vivo conditions, possibly because of both a large non-specific bound fraction and low in vitro binding affinity for NMDA receptors.
关键词：NPS 1506;carbon-11;brain distribution;N-methyl- D -aspartate (NMDA) receptor
