4-({4-[2-methyl-6-(1H-pyrazol-1-yl)pyrimidin-4-yl]piperazin-1-yl}methyl)oxan-4-ol

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

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

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

3-(dimethylamino)-2-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazol-3-yl]formamido}propanoic acid

7-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)furan-2-carbonyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

7-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]pentanoic acid

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]-N-[2-(methylsulfanyl)ethyl]formamido}acetic acid

1-[N-methyl4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxane-4-amido]cyclopropane-1-carboxylic acid

5-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]-N-methylformamido}pentanoic acid