(S)-2-{(R)-2-[3-((S)-2-Benzyloxycarbonylamino-4-phenyl-butyrylamino)-2-oxo-pentanoylamino]-4-methyl-pentanoylamino}-3-methyl-butyric acid tert-butyl ester

(S)-2-((S)-2-Benzyloxycarbonylamino-4-phenyl-butyrylamino)-3-methyl-butyric acid

((S)-1-(S)-Oxiranyl-3-phenyl-propyl)-carbamic acid benzyl ester

benzyl ((S)-1-(((S)-1-chloro-2-oxo-5-phenylpentan-3-yl)amino)-1-oxo-4-phenylbutan-2-yl)carbamate

{(1S,2R)-3-[((2R,3S)-3-Amino-2-hydroxy-5-phenyl-pentyl)-(2-trimethylsilanyl-ethoxycarbonyl)-amino]-1-benzyl-2-hydroxy-propyl}-carbamic acid tert-butyl ester