5-(2-Carbamoyl-ethyl)-8-methyl-tetrazolo[1,5-c]pyrimidine-7-carboxylic acid ethyl ester

Ethyl 3-Amino-3-<4-azido-6-(carboethoxy)-5-methylpyrimidin-2-yl>acrylate

3-(4-azido-6-carbethoxy-5-methylpyrimidin-2-yl)propionic acid

Nα-((tert-butyloxy)carbonyl)-Nβ-<1-amino-3(R)-(6-amino-4-(ethoxycarbonyl)-5-methylpyrimidin-2-yl)propion-3-yl>-(S)-β-aminoalanine amide

Nα-((tert-butyloxy)carbonyl)-Nβ-<1-amino-3(S)-(6-amino-4-(ethoxycarbonyl)-5-methylpyrimidin-2-yl)propion-3-yl>-(S)-β-aminoalanine amide