Synthesis and Pharmacology of Ethylphenidate Enantiomers: The Human Transesterification Metabolite of Methylphenidate and Ethanol
摘要:
Ethanol elevates methylphenidate (1) plasma concentrations and yields the metabolite ethylphenidate (2). The therapeutic implications are under investigation. The IC50 for dopamine reuptake inhibition by (+)-2 was 27 nM compared to 367 nM for cocaine and 1730 nM for (-)-2. Binding selectivity for dopamine versus norepinephrine transporters was greater for (+)-2 than for cocaine. Intraperitoneal (+)-2 was approximately half as active as (+)-1 in stimulating mouse motor activity at 5 mg/kg, but (+)-2 was as active as (+)-1 at 10 mg/kg.