Methyl (R)-2-((S)-2-(3-benzylureido)-4-methylpentanamido)-2-phenylacetate

2-cyclopropyl-2-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-4-yl}formamido)acetic acid

2-chloro-6-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]benzoic acid

2-({[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}methyl)-4-methyl-1,3-thiazole-5-carboxylic acid

4-[3-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]but-2-enoic acid

2-(1-{4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxan-4-yl}-N-(2-hydroxyethyl)formamido)acetic acid

2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(2-hydroxyethyl)-4-methylpentanamido]acetic acid

2-{1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]-N-(2-hydroxyethyl)formamido}acetic acid

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]-N-(2-hydroxyethyl)formamido}acetic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-2-(methoxymethyl)pyrrolidine-2-carboxylic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(1-methyl-1H-pyrazol-5-yl)acetamido]butanoic acid