2-Amino-4-(1h-pyrazol-1-yl)butanamide

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-[1-(hydroxymethyl)-2-azabicyclo[2.2.1]heptan-2-yl]-4-oxobutanoic acid

2-({2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-pyrazol-1-yl]-N-methylacetamido}oxy)acetic acid

4-(5,5-difluoro-2-methylpiperidin-1-yl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{[2-(5-methyl-1,2-oxazol-4-yl)ethyl]carbamoyl}butanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-({2-[(1-methylcyclopentyl)oxy]ethyl}carbamoyl)propanoic acid

(2S,4S)-1-[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-4-hydroxypyrrolidine-2-carboxylic acid

(2R,4R)-1-[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-4-hydroxypyrrolidine-2-carboxylic acid

rac-4-{[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}-2,2-dimethylbutanoic acid

rac-6-{[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}hexanoic acid

rac-3-{1-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]-N-(propan-2-yl)formamido}propanoic acid