N-[2-[(1-Cyanocyclobutyl)-methylamino]-2-oxoethyl]-2,3-dihydro-1H-indene-5-carboxamide

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

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

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

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]-1-methyl-1H-pyrazole-5-carboxylic acid

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

3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]-1-methyl-1H-pyrazole-5-carboxylic acid

3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]-1-methyl-1H-pyrazole-5-carboxylic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanoyl]-3-azabicyclo[3.1.0]hexane-6-carboxylic acid

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

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