1-(4-Chlorophenyl)-2-(4-hydroxypiperidin-1-yl)ethan-1-one

(2R)-2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-phenylacetic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]pentanoic acid

5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylpropanamido]-4-methylpentanoic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]pentanoic acid

4-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanamido}-3-methylbutanoic acid

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

2-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]acetamido}-2-methylbutanoic acid

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

1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanoyl]-4-methylpyrrolidine-3-carboxylic acid

2-(4-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetyl}thiomorpholin-3-yl)acetic acid