Synthesis of the racemate and individual enantiomers of [11C]methylphenidate for studying presynaptic dopaminergic neuron with positron emission tomography
An improved method for the radiosynthesis of [11C]d-threo-methylphenidate
作者:A. R. Studenov、S. Jivan、J. Lu、M. J. Adam、S. B. Jensen、J. P. O'Neil、Y.-S. Ding
DOI:10.1002/jlcr.1065
日期:2006.4
An improvedmethod to remove the 2-nitrophenylsulfenyl protecting group in the conventional radiosynthesis of the PET radiotracer [C-11]d-threo-methylphenidate was developed. The method uses the nonvolatile reagents sulfuric acid and L-cysteine. In addition it was demonstrated that solid phase extraction (SPE, C18 and ion exchange) can be used to purify the final product instead of semi-preparative