PROCESS FOR PREPARING NEW DL-TYROSINE DERIVATIVES

摘要

Tyrosine derivatives of the formula: wherein: R1 is a linear or branched-chain alkyl group having 1-6 carbon atoms, terminating by a tertiary amino group; R 2 is an unsubstituted, monosubstituted or di-substituted phenyl or benzyloxy group, the substituent being -Cl, -Br, -NO2, -OCH3, -CH3 or -CF3; R3 is a primary, secondary or tertiary amino group or an aryl-alkylamino group having 7-9 carbon atoms; and salts of said tyrosine derivatives with pharmaceutically acceptable acids.