Synthesis of the enantiomers of [N-methyl-11C] PK 11195 and comparison of their behaviours as radioligands for PK binding sites in rats

F Shah, SP Hume, VW Pike, S Ashworth… - Nuclear medicine and …, 1994 - Elsevier
The enantiomers of [N-methyl-11 C] PK 11195, a radioligand for PET studies of PK
(peripheral benzodiazepine) binding sites, have been prepared from the newly synthesized
N-desmethyl-enantiomers by 11 C-methylation with NCA [11 C] iodomethane. The brain
uptake and retention of each enantiomer was compared with that of the racemic radioligand
after iv administration into normal rats and into rats with focal cortical lesions. No significant
differences in the uptakes of the enantiomers were observed in regions devoid of PK binding …