4-(4-Chloro-pyridine-2-carbonyl)-piperazine-1-carboxylic acid tert-butyl ester

2-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]pent-4-enoic acid

2-(4-{[(Tert-butoxy)carbonyl]amino}-1-ethylpiperidin-4-yl)acetic acid

(2R)-2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanamido]-4-(methylsulfanyl)butanoic acid

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

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-3-(methoxymethyl)butanoic acid

(2R)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]pentanoic acid

3-(5-Ethyl-1,3-thiazol-2-yl)prop-2-ynoic acid

2,2-Difluoro-3-[(hex-1-yn-3-yl)amino]propanoic acid

4-{[3-bromo-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}-3-methylbutanoic acid

rac-1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl (1R,3S)-1-{[(tert-butoxy)carbonyl]amino}-3-methylcyclohexane-1-carboxylate