tert-butyl (3S)-3-(2-methylprop-2-enoyl)pyrrolidine-1-carboxylate

2-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-4-yl}formamido)-4,4-difluorobutanoic acid

(2R,4R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methylcyclopentanecarbonyl]-4-hydroxypyrrolidine-2-carboxylic acid

rac-2-{1-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopentyl]-N-(2-methoxyethyl)formamido}acetic acid

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

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

3-chloro-5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]benzoic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]-2-hydroxybenzoic acid

(2R)-2-[3-ethoxy-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-4-hydroxybutanoic acid

5-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanamido]hexanoic acid

2-(1-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}cyclopentyl)acetic acid