Hyl]-2,2-dimethylpropyl ester

4-{[(1-benzyl-4-methylpyrrolidin-3-yl)methyl]carbamoyl}-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

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

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

2-[(2-{4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1H-1,2,3-triazol-1-yl}acetamido)oxy]propanoic acid

2-[({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazol-4-yl}formamido)oxy]propanoic acid

2-cyclopropyl-2-({2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}oxy)acetic acid

2-cyclopropyl-2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]oxy}acetic acid

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

4-(4-Hydroxy-3,3-dimethylpiperidin-1-yl)but-2-enoic acid

rac-2-cyclopropyl-2-({[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}oxy)acetic acid