N-(6-((2-((3-methylisoxazol-5-yl)amino)-2-oxoethyl)thio)pyridazin-3-yl)propionamide

(3S)-3-{[(tert-butoxy)carbonyl]amino}-3-(1H-imidazol-2-yl)propanoic acid

2-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]cyclopentyl}acetic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]-2-methylbut-2-enoic acid

2-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]cyclobutyl}acetic acid

4-[3-(Dimethylamino)phenyl]oxane-2,6-dione

2-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}-6-chlorobenzoic acid

1-{[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}cyclobutane-1-carboxylic acid

3-[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-2-(propan-2-yl)butanoic acid

4-[(butan-2-yl)(methyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{[1-(methylsulfanyl)propan-2-yl]carbamoyl}butanoic acid