5-(2-methoxypyridin-4-yl)-N-(2,2,2-trifluoroethyl)pyrimidin-2-amine

2-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]acetamido}-2-methylbutanoic acid

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

3-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxypropanoyl]piperidin-2-yl}propanoic acid

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

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]-N-methylformamido}butanoic acid

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

3-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}-2,2-dimethylpropanoic acid

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

4-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-4-methylpentanoic acid

5-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]pyridine-3-carboxylic acid