EP2220049A2 - METHOD FOR PRODUCING PRECURSORS FOR L-3,4-DIHYDROXY-6-[18F]FLUOROPHENYLALANINE AND 2-[18F]FLUORO-L-TYROSINE AND THE ALPHA -METHYLATED DERIVATIVES THEREOF, PRECURSOR, AND METHOD FOR PRODUCING L-3,4 DIHYDROXY-6-[18F]FLUOROPHENYLALANINE AND 2-[18F]FLUORO-L-TYROSINE AND THE ALPHA-METHYLATED DERIVATIVES FROM THE PRECURSOR | Patent Bear