Tert-butyl 3-(2-hydrazinyl-2-oxoethyl)azetidine-1-carboxylate

2-[(4-Chloro-2-methoxypyridin-3-yl)oxy]ethan-1-amine

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

(3S)-3-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]butanoic acid

(3R)-3-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]pentanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-({spiro[3.3]heptan-2-yl}carbamoyl)propanoic acid

5-[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-hexahydro-2H-furo[2,3-c]pyrrole-6a-carboxylic acid

(2S)-2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]pentanoic acid

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

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

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