(S)-2-tert-Butoxycarbonylamino-5-chloro-pentanoic acid ethyl ester

(S)-5-Benzyloxyamino-2-tert-butoxycarbonylamino-pentanoic acid tert-butyl ester

2,2,2-trichloroethyl (S)-(benzyloxy)(3-(2,5-dioxooxazolidin-4-yl)propyl)carbamate

5-((benzyloxy)((2,2,2-trichloroethoxy)carbonyl)amino)-2-((tert-butoxycarbonyl)amino)pentanoic acid