2,2,3,3-Tetrafluoro-1-(1-piperazinyl)-1-propanone

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]-4-oxobutanoic acid

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

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]cyclopentane-1-carboxylic acid

2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,5,6-trifluorobenzoic acid

rac-1-[(3R,4S)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-methylpyrrolidin-3-yl]-1H-1,2,3-triazole-4-carboxylic acid

6-bromo-8-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxo-4H-chromene-2-carboxylic acid

4-{[(9H-fluoren-9-yl)methoxy]carbonyl}-1-methyl-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid

rac-(3aR,7aS)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-octahydropyrano[4,3-b]pyrrole-3a-carboxylic acid

4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}(methyl)amino)methyl]-3,5-dimethylbenzoic acid

3-cyclopropyl-1-(9H-fluoren-9-ylmethoxycarbonyl)pyrrolidine-3-carboxylic acid