Tert-butyl (4-formyl-5-methylisoxazol-3-YL)carbamate

rac-(3aR,6aR)-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

rac-(3aR,6aR)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

rac-(3aR,6aR)-2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]butanoyl}-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

rac-(3aR,6aR)-2-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]-2-(propan-2-yl)-1,3-thiazolidine-4-carboxylic acid

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}-5-methoxypentanoic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]-5-methylbenzoic acid

2-(2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-ynamido]methyl}phenyl)acetic acid

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

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