4-Cyclopropoxy-6-iodonicotinonitrile

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

3-cyclobutyl-3-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}propanoic acid

(2S)-2-{[(1RS,5RS,6SR)-6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.2.0]heptan-3-yl]formamido}-3-hydroxypropanoic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]-5-oxopyrazolidine-3-carboxylic acid

(2S)-4-{[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-2-hydroxybutanoic acid

2-{2-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]ethyl}-5-methyl-1,3-thiazole-4-carboxylic acid

1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid

2-(cyclopentylmethyl)-3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]propanoic acid

(3R)-3-(2-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}acetamido)-4-methylpentanoic acid

(2S)-2-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}-3-methoxypropanoic acid