1-Amino-4-fluorobutan-2-one

4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]but-2-ynoic acid

1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-4-(trifluoromethyl)pyrrolidine-3-carboxylic acid

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

(3S)-3-{2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}butanoic acid

(3S)-3-{[(1RS,5SR)-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohex-3-en-1-yl]formamido}pentanoic acid

1-[N-methyl3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]cyclohexane-1-carboxylic acid

1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]-3-(propan-2-yl)pyrrolidine-3-carboxylic acid

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}-4,4,4-trifluorobutanoic acid

(2R,4R)-4-hydroxy-1-[(1rs,3rs)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]pyrrolidine-2-carboxylic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]morpholine-2-carboxylic acid