2-{[(E)-(S)-2-tert-Butoxycarbonylamino-2-carbamoyl-ethylimino]-methyl}-6-chloro-5-methyl-pyrimidine-4-carboxylic acid ethyl ester

Nα,Nβ-bis(tert-butoxycarbonyl)-Nβ-<(4-amino-6-carboxy-5-methylpyrimidin-2-yl)methyl>-(S)-β-aminoalanineamide

ethyl 2-<1-<<(S)-2-<(tert-butoxycarbonyl)amino>-2-carbamoylethyl>amino>-2-<(tert-butylthio)carbonyl>ethyl>-6-chloro-5-methylpyrimidine-4-carboxylate

(S)-6-amino-2-(((2,3-diamino-3-oxopropyl)amino)methyl)-5-methylpyrimidine-4-carboxylic acid

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

2-[1-((S)-2-tert-Butoxycarbonylamino-2-carbamoyl-ethylamino)-2-tert-butylsulfanylcarbonyl-ethyl]-6-chloro-5-methyl-pyrimidine-4-carboxylic acid