6-Amino-5-(difluoromethyl)-4-fluoropyridin-2-ol

1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-3-propylpyrrolidine-3-carboxylic acid

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

(2R)-2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-dimethylhexanamido]pentanoic acid

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

3-{1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]piperidin-4-yl}propanoic acid

rac-(2R,3R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-2-methylpiperidine-3-carboxylic acid

rac-(2R,3R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-2-methylpiperidine-3-carboxylic acid

rac-(2R,3R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enoyl]-2-methylpiperidine-3-carboxylic acid

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

(2RS,3RS)-2-methyl-1-[(1rs&,3rs&)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]piperidine-3-carboxylic acid