ethyl esters and amides of carboxymethoxy- , alpha- and beta-carboxyethoxy- and gamma-carboxypropoxymethyl derivatives of adenine , guanine , cytosine , uracil , thymine , 1,2,4-triazole-3- and -5-carboxamide were synthesized and their antiviral activity was studied .
C0041917
uracil
C0040087
thymine