2-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-acetamidoacetic acid

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

rac-2-({1-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-3-methylazetidin-3-yl}oxy)acetic acid

rac-2-{4-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]morpholin-2-yl}acetic acid

rac-4-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]oxane-4-carboxylic acid

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

(1rs&,3rs&)-3-[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]cyclobutane-1-carboxylic acid

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

3-{[1-(difluoromethyl)cyclopropyl]carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

4-{[1-(difluoromethyl)cyclopropyl]carbamoyl}-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

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