p- and m-aminophenylalkanoic acids and their derivatives containing diethylenediimidophosphoryl and diethylenediimidothiophosphoryl groups

1. The methyl esters and Na salts of p- and m-aminophenylalkanoic acids, containing diethylenediimidophosphoryl and diethylenediimidothiophosphoryl groups, were synthesized. 2. The methyl esters and Na salts of DL-valine, acylated with p- and m-aminophenylalkanoic acids, and containing diethylenediimidophosphoryl groups, were obtained.