Disclosed is a method for producing precursors for L-3,4-dihydroxy-6-[
18
F]fluorophenylalanine and 2-[
18
F]fluoro-L-tyrosine and the α-methylated derivatives thereof, the precursor, and to a method for producing L-3,4-dihydroxy-6[
18
F]fluorophenylalanine and 2-[
18
F]fluoro-L-tyrosine and the α-methylated derivatives thereof from the precursor. A compound of formula (3) is provided which enables automated synthesis of L-3,4-dihydroxy-6-[
18
F]fluorophenylalanine and 2-[
18
F]fluoro-L-tyrosine. The enantiomeric purity of the product is ≧98%.
本发明公开了一种用于生产L-3,4-二羟基-6-[18F]
氟苯丙
氨酸和2-[18F]
氟-
L-酪氨酸及其α-甲基衍
生物的前体物的方法,以及从该前体物生产L-3,4-二羟基-6-[18F]
氟苯丙
氨酸和2-[18F]
氟-
L-酪氨酸及其α-甲基衍
生物的方法。提供了式(3)的化合物,它能够自动合成L-3,4-二羟基-6-[18F]
氟苯丙
氨酸和2-[18F]
氟-
L-酪氨酸。产品的对映体纯度≧98%。