title: Radiosynthesis of a selective dopamine D-1 receptor antagonist: R(+)-7-chloro-8-hydroxy-3-[11C]methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3 -benzazepine ([11C]SCH 23390).
abstract: Carbon-11 labeled SCH 23390, a selective dopamine D-1 receptor antagonist (Fig. 1b), was prepared by N-alkylation of the nor-methyl precursor with [11C]iodomethane. The product was purified by semi-preparative HPLC and shown to be radiochemically pure at the end of synthesis. The synthesis was completed in approximately 22 min with an average radiochemical yield of 28% (based on [11C]iodomethane) and an average specific activity of approximately 1950 microCi/mumol calculated at the end of synthesis.
mesh_terms: D001552:Benzazepines / Q000378:metabolism* / Q000494:pharmacology; D002250:Carbon Radioisotopes; D018492:Dopamine Antagonists; D007553:Isotope Labeling / Q000379:methods; D011954:Receptors, Dopamine / Q000187:drug effects* / Q000378:metabolism; D017447:Receptors, Dopamine D1
chemical_list: D001552:Benzazepines; D002250:Carbon Radioisotopes; D018492:Dopamine Antagonists; D011954:Receptors, Dopamine; D017447:Receptors, Dopamine D1