1-Cyclopropyl-1H-pyrrole-3-carbaldehyde

2-(1-{4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl}-N-methylformamido)butanoic acid

1-[({4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl}formamido)methyl]cyclopropane-1-carboxylic acid

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

1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanoyl}-2-methylpiperidine-2-carboxylic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-octahydrocyclopenta[c]pyrrole-1-carboxylic acid

(2S)-2-({4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxan-4-yl}formamido)-4-hydroxybutanoic acid

(2S)-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylphenyl]formamido}-4-hydroxybutanoic acid

(2R)-2-({1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl}formamido)-4-hydroxybutanoic acid

2-bromo-5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanamido]-4-methylbenzoic acid

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