2,2-Difluoro-1-(oxolan-3-yl)cyclopropane-1-carboxylic acid

rac-2-{1-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropanecarbonyl]piperidin-3-yl}acetic acid

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

2-ethyl-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enamido]butanoic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylpropanamido]-2-hydroxybutanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(pyrimidin-5-yl)carbamoyl]propanoic acid

3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]pentanamido}-2-methoxypropanoic acid

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

2-{1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,2,4-triazol-3-yl]-N-(2-methylpropyl)formamido}acetic acid

(2S,3R)-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(methoxymethyl)butanamido]-3-hydroxybutanoic acid

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