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- W2058187385 abstract "The radiochemical synthesis of N-[11C-methyl]-L-DOPA was accomplished by N-methylation of the methyl and ethyl esters of L-N-tert-butyl-oxycarbonyl-[β-(3,4-dimethoxyphenyl)] alaninate with [11C]iodomethane using sodium hydride in tetrahydrofuran and deprotection of the N-methyl intermediate with hydriodic acid. A catalytic influence of Kryptofix on the methylation reaction was observed. Using the ethyl ester precursor, the average specific activity at the end-of-synthesis was 972 mCi/μmole. The synthesis was completed in an average of 45 minutes following the end-of-bombardment." @default.
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- W2058187385 date "1992-12-01" @default.
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- W2058187385 title "Synthesis of N-[11C]-methyl-L-DOPA" @default.
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