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

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

(R)-N-tert-butyl-3-[(2S,3S)-3-[(S)-2-(tert-butoxycarbonyl)aminobutanoyl]amino-2-hydroxy-4-phenylbutanoyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxamide

(R)-N-tert-butyl-3-[(2S,3S)-3-[(S)-2-(tert-butoxycarbonyl)amino-3-methylbutanoyl]amino-2-hydroxy-4-phenylbutanoyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxamide