2-(2-Chloro-6-methoxyphenyl)-1,3-thiazole-4-carboxylic acid

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

3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanamido]-1-methyl-1H-pyrazole-5-carboxylic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-1-methyl-1H-pyrazole-4-carboxylic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]-1-methyl-1H-pyrazole-3-carboxylic acid

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

rac-(2R,4R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-2-methylpiperidine-4-carboxylic acid

rac-(2R,4R)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoyl]-2-methylpiperidine-4-carboxylic acid

4-[N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]butanoic acid

4-{N-ethyl-1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]formamido}butanoic acid

4-{N-ethyl-1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazol-3-yl]formamido}butanoic acid