4-Azido-1,2-dibromobenzene

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

2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]methyl}-4-methyl-1,3-thiazole-5-carboxylic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]bicyclo[2.2.1]heptane-2-carboxylic acid

4-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]acetamido}-2-methylbutanoic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylpentanamido]-4,4-dimethylpentanoic acid

rac-2-[(1R,2R)-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]cyclohexyl]acetic acid

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

3-(1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetyl}piperidin-2-yl)propanoic acid

1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]acetyl}-2-methylpyrrolidine-3-carboxylic acid

2-(1-{[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}cyclobutyl)acetic acid