N-(1-cyanocyclopropyl)-2-{3-oxo-2H,3H,5H,6H,7H,8H,9H-[1,2,4]triazolo[4,3-a]azepin-2-yl}acetamide

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-({[1-(methylsulfanyl)cyclopropyl]methyl}carbamoyl)propanoic acid

1-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropanecarbonyl}-2-methylpyrrolidine-2-carboxylic acid

5-(3-tert-butylpyrrolidin-1-yl)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-oxopentanoic acid

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylpentanamido]oxolane-3-carboxylic acid

3-[N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxybutanamido]butanoic acid

2-(1-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetyl}azetidin-3-yl)propanoic acid

(2S,4S)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanoyl]-4-hydroxypyrrolidine-2-carboxylic acid

(2S,3R)-2-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-3-hydroxybutanoic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,2-dimethylbutanamido]-2-methylpropanoic acid

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]pentanoic acid