(3S)-1-benzyl-4,4-difluoropyrrolidin-3-amine

6-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]bicyclo[3.2.0]heptane-3-carboxylic acid

2-[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidine-4-carbonyl]-5-oxopyrazolidine-3-carboxylic acid

2-[3-cyclopropyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-5-oxopyrazolidine-3-carboxylic acid

3-[N-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-dimethylpentanamido]propanoic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-dimethylpentanoyl]-2-methylpyrrolidine-3-carboxylic acid

(2R)-2-{[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-3-methylbutanoic acid

rac-3-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-3-methylbutanoic acid

rac-3-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}pentanoic acid

rac-4-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-2-methylbut-2-enoic acid

8-Methyl-2-(2-methylbutan-2-yl)imidazo[1,2-a]pyridine-3-carboxylic acid