N-benzyloxycarbonyl-3(S)-amino-1-chloro-4-phenyl-2(S)-butanol
(S)-benzyl (4-chloro-3-oxo-1-phenylbutan-2-yl)carbamate
N-benzyloxycarbonyl-3(S)-amino-1,2(S)epoxy-4-phenylbutane
[(1S,2R)-1-Benzyl-2-hydroxy-3-(1-isobutyl-3-methyl-ureido)-propyl]-carbamic acid benzyl ester