A series of analogues of the dipeptide sweetener L-aspartyl-L-phenylalaninemethylester having hydroxy and/or methoxy substitution on the aromatic ring was synthesized and tasted. The introduction of a methoxy group in the para position of the aromatic ring of the peptide sweetener is crucial to the reduction or destruction of the sweet taste. The effects of substituents in the ortho or meta position
Stereoselective synthesis of 3-o-methyl-6-[18F]fluorodopa via fluorodestannylation
作者:Michael J. Adam、Jianming Lu、Salma Jivan
DOI:10.1002/jlcr.2580340611
日期:1994.6
3-O-Methyl-6-[18F]fluorodopa was synthesized in 20% radiochemical yield in 60 min, with a specific activity of 500 mCi/mmol, by the fluorination of a stannylated dopa precursor with [18F]-acetyl hypofluorite.