2-[3-(Aminomethyl)phenyl]piperidin-4-amine

4-[({1-[benzyl(methyl)amino]cyclobutyl}methyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

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

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

3-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]acetyl}-1,3-thiazolidine-4-carboxylic acid

4-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridine-2-carbonyl]morpholine-2-carboxylic acid

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]propanoic acid

2-({[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-en-1-yl]formamido}methyl)-3-methylbutanoic acid

3-[(4-bromo-1,3-dimethyl-1H-pyrazol-5-yl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

(2R)-2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-en-1-yl]formamido}butanoic acid

3-[(1-benzylpyrrolidin-3-yl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid