4-(Ethoxycarbonyl)-2,2-dimethyl-2,5-dihydrothiophene-3-carboxylic acid

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

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]-4,4-difluorobutanoic acid

rac-(1R,6S)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)furan-2-carbonyl]-3-azabicyclo[4.1.0]heptane-7-carboxylic acid

2-{1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanamido]cyclopentyl}acetic acid

3-(2-{[(Tert-butoxy)carbonyl]amino}ethyl)-1-methoxycyclobutane-1-carboxylic acid

N-Benzoyl-2-(4-chlorophenyl)hydrazinecarboxamide

rac-(3aR,6aR)-4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-hexahydro-2H-furo[3,2-b]pyrrole-5-carboxylic acid

rac-(3aR,6aR)-4-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]-hexahydro-2H-furo[3,2-b]pyrrole-5-carboxylic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-3-hydroxybutanoic acid

tert-Butyl (R)-4-(1-hydroxypropan-2-yl)piperidine-1-carboxylate