Nα-(tert-butoxycarbonyl)-Nβ-[1-amino-3(S)-(4-amino-6-carboxy-5-methylpyrimidin-2-yl)propion-3-yl]-(S)-β-aminoalanine tert-butyl ester

ethyl 2(R)-<1-<<2(S)-<((tert-butyloxy)carbonyl)amino>-2-carbamoylethyl>amino>-2-<((4S,5R)-4-methyl-5-phenyl-2-oxazolidinyl)carbonyl>-2(S)-(methylthio)ethyl>-6-amino-5-methylpyrimidine-4-carboxylate

Nα-(tert-butoxycarbonyl)-Nβ-[1-amino-3(S)-(4-amino-6-carboethoxy-5-methylpyrimidin-2-yl)propion-3-yl]-(S)-β-aminoalanine tert-butyl ester

3-(6-amino-4-(ethoxycarbonyl)-5-methylpyrimidin-2-yl)-3(S)-<(2-(((tert-butyloxy)carbonyl)amino)ethyl)amino>propionamide

3-(6-amino-4-(ethoxycarbonyl)-5-methylpyrimidin-2-yl)-3(S)-aminopropionamide