ester was methylated and the hydroxyl group of the product replaced by fluorine, using 1,1,2-trifluoro-2-chloroethyl-diethylamine. Analogously, the N,N-dimethyl derivatives of several β-hydroxy-α-amino acids were transformed into the corresponding β-fluoro compounds.
Synthesis and antiviral activity of N- and O-substituted amino acids
作者:Yu. Straukas、N. Dirvyanskite、R. Yankauskas、V. E. Yavorovskaya、A. N. Evstropov、V. N. Kiseleva
DOI:10.1007/bf02218767
日期:1996.4
of IV �9 HCI from an ethanol - water medium, and V - HCI from a methanol - water medium, these hydrochlorides lose HCI and convert into compounds IV and V, respectively. N-Propionyl-4-methoxy-" 3-nitro-DL-phenylalanine octyl ester (VII) was synthesized by condensation of 4-methoxy-3-nitro-DL-phenylalanine octyl toluenesulfonate [4] with propionyl chloride in chloroform in the presence of triethylamine