1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-methyl-1H-indazole-5-carboxylate

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

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanamido]-3-methylpentanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-{4-[(1S)-1-hydroxyethyl]piperidin-1-yl}-5-oxopentanoic acid

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

rac-2-{[(1R,3R,5R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}-3-hydroxy-2-methylpropanoic acid

3-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-ynamido]ethyl}benzoic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-ynamido]-3-phenylpropanoic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]but-2-ynoic acid

(2S)-2-{2-[(1RS,2RS)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]acetamido}butanoic acid

2-(1-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxan-3-yl}-N-(prop-2-en-1-yl)formamido)acetic acid