2-Fluoro-2-(3-fluorophenyl)propanoic acid

(2R)-1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]-4,4-difluoropyrrolidine-2-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(2-methanesulfonyl-2-methylpropyl)(methyl)carbamoyl]propanoic acid

(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(2-fluoro-5-nitrophenyl)propanoic acid

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

3-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]methyl}-4-methylpentanoic acid

2-[N-(cyclopropylmethyl)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4-methylpentanamido]acetic acid

3-cyclopropyl-4-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2,5-oxadiazol-3-yl]formamido}butanoic acid

3-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)spiro[3.3]heptan-2-yl]formamido}-2,2-difluoropropanoic acid

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanoyl]thiomorpholine-2-carboxylic acid

(3R)-1-[(1RS,3RS)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexanecarbonyl]piperidine-3-carboxylic acid