Nα-Formyl-Nγ-benzyloxycarbonyl-α,γ-diamino-L-butyryl-L-threonin-methylester

(2S,3R)-2-{(S)-4-Benzyloxycarbonylamino-2-[(S)-4-benzyloxycarbonylamino-2-((R)-2-formylamino-4-methyl-pentanoylamino)-butyrylamino]-butyrylamino}-3-hydroxy-butyric acid methyl ester

[(S)-3-[(S)-4-Benzyloxycarbonylamino-2-((R)-2-formylamino-4-methyl-pentanoylamino)-butyrylamino]-3-((1S,2R)-1-hydrazinocarbonyl-2-hydroxy-propylcarbamoyl)-propyl]-carbamic acid benzyl ester