(S)-2-Amino-3-methyl-butyric acid (1S,2S)-2-benzyloxycarbonylamino-1-((R)-4-tert-butylcarbamoyl-thiazolidine-3-carbonyl)-3-phenyl-propyl ester

[(1S,2S)-1-Benzyl-3-((R)-4-tert-butylcarbamoyl-5,5-dimethyl-thiazolidin-3-yl)-2-hydroxy-3-oxo-propyl]-carbamic acid benzyl ester

{(1S,2S)-1-Benzyl-3-[(R)-4-(3-carbamoyl-benzylcarbamoyl)-5,5-dimethyl-thiazolidin-3-yl]-2-hydroxy-3-oxo-propyl}-carbamic acid tert-butyl ester

(S)-2-[2-(Isoquinolin-5-yloxy)-acetylamino]-pentanoic acid (1S,2S)-2-benzyloxycarbonylamino-1-((R)-4-tert-butylcarbamoyl-thiazolidine-3-carbonyl)-3-phenyl-propyl ester

N2-((2S,3S)-4-((3-(2H-tetrazol-5-yl)phenyl)amino)-3-hydroxy-4-oxo-1-phenylbutan-2-yl)-N6-((R)-1-(4-methoxyphenyl)ethyl)-4-oxo-4H-pyran-2,6-dicarboxamide