rac-(1R,6S,8R)-8-(4-fluorophenyl)-3-azabicyclo[4.2.0]octane

2-{4-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]thian-4-yl}acetic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(6,6,6-trifluorohexan-3-yl)carbamoyl]propanoic acid

rac-(3R,4R)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-4-(trifluoromethyl)pyrrolidine-3-carboxylic acid

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

3-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetyl}-3-azabicyclo[4.1.0]heptane-7-carboxylic acid

3-[(3,3-difluoro-1-methylcyclobutyl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-2-(propan-2-yl)butanoic acid

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

rac-2-[(2-{[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl]formamido}ethyl)sulfanyl]acetic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]-5,5-dimethylhexanoic acid