(2S)-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-fluorophenyl]formamido}butanoic acid

3-({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazol-4-yl}formamido)-2-methylpropanoic acid

8-Fluoro-3-hydrazinyl-2-(2-methoxypropan-2-yl)quinoline

5-Chloro-2-(2,2-dimethylpropyl)-3-hydrazinylquinoline

2-Ethyl-3-hydrazinyl-5-methoxyquinoline

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

3-({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazol-4-yl}formamido)butanoic acid

1-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazole-4-amido}cyclopropane-1-carboxylic acid

2-{1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]pyrrolidin-3-yl}acetic acid

2-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxybutanoyl]pyrrolidin-3-yl}acetic acid

(2S)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methyloxolane-3-carbonyl]pyrrolidine-2-carboxylic acid