2-Ethyl-4,6-dimethoxybenzothiazole

3-{[(2-cyclopropyl-1,3-thiazol-4-yl)methyl]carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

2-{[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]methyl}-2-methylbutanoic acid

2-[(2R)-1-[3-ethoxy-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]pyrrolidin-2-yl]acetic acid

1-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}spiro[2.3]hexane-1-carboxylic acid

rac-2-ethyl-1-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]pyrrolidine-2-carboxylic acid

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

3-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)heptanamido]cyclopentane-1-carboxylic acid

2-{4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanoyl]-1,4-diazepan-1-yl}acetic acid

5-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]pyridine-2-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(3-hydroxy-2,2-dimethylpropyl)carbamoyl]propanoic acid