2-(1-Chloro-2-oxopropyl)-4-hydroxybenzaldehyde

4-{[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidin-4-yl]formamido}but-2-enoic acid

5-{[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidin-4-yl]formamido}pentanoic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]-4,4-difluorobutanoic acid

rac-4-{[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]formamido}-3,3-dimethylbutanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{3-[(methylsulfanyl)methyl]pyrrolidin-1-yl}-4-oxobutanoic acid

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

1-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enamido]methyl}cyclobutane-1-carboxylic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-[2-(2-fluoroethyl)morpholin-4-yl]-5-oxopentanoic acid

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

rac-2-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cycloheptyl]formamido}pent-4-enoic acid