3-(Cyanomethyl)-2-(difluoromethyl)-6-fluoroisonicotinonitrile

rac-2-cyclobutyl-3-{[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}propanoic acid

rac-5-({[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}methyl)-1,2-oxazole-3-carboxylic acid

rac-5-{[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}-4-methylpentanoic acid

rac-2-{1-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cycloheptaneamido]cyclopropyl}acetic acid

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

(2S)-4-{[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cycloheptyl]formamido}-2-hydroxybutanoic acid

2-{[2-({4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxan-4-yl}formamido)ethyl]sulfanyl}acetic acid

3-cyclopropyl-3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]propanoic acid

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

4-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}hexanoic acid