5-(2-Chloro-4-nitrophenyl)-4-oxazolecarboxylic acid

2-[(2S,3R)-N-[2-(dimethylamino)ethyl]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]acetic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanoyl]-6-methylpiperidine-3-carboxylic acid

(2R)-2-[(2S,3R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]propanoic acid

2-[(2S,3R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxy-N-methylbutanamido]acetic acid

2-{1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4H-1,2,4-triazol-3-yl]-N-(propan-2-yl)formamido}acetic acid

1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-2-methylpiperidine-3-carboxylic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-enoyl]-2-methylpiperidine-3-carboxylic acid

1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-2-methylpiperidine-3-carboxylic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxypropanoyl]-2-methylpiperidine-3-carboxylic acid

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