3-(5-Chloro-2-fluorophenyl)-4,4,4-trifluorobutanoic acid

(2S)-3-(dimethylamino)-2-{[(2RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}propanoic acid

4-(dimethylamino)-2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]butanoic acid

3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2,2,4-trimethylpentanoic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-enamido]-2,2,4-trimethylpentanoic acid

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

2-(1-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1,3-thiazole-4-amido}cyclopropyl)acetic acid

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

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

2-{2-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]ethoxy}acetic acid

4-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}pentanoic acid