5-[2-(1,3-benzoxazol-2-yl)piperidine-1-carbonyl]-1H-pyrrole-2-carbaldehyde

3-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]formamido}-3-methylbutanoic acid

3-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]formamido}-2-hydroxy-2-methylpropanoic acid

3-[(2R)-N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]-2-methylpropanoic acid

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

(2S)-2-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-4-yl}formamido)pentanoic acid

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

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

(2S)-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-4-hydroxybutanoic acid

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

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]methyl}-4,4-dimethylpentanoic acid