2-(4-Cyclohexylpiperazin-1-yl)pyridin-3-amine

(2R)-2-({2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1,3-thiazol-4-yl}formamido)-4-hydroxybutanoic acid

4-({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-imidazol-4-yl}formamido)pentanoic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexanecarbonyl]-3-methylpyrrolidine-2-carboxylic acid

2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-4-fluorobenzoic acid

1-(3-(Benzyloxy)-5-methylphenyl)-2,2-dichloroethanol

4-{[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}benzoic acid

4-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-methylbenzoic acid

4-{[2-bromo-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylphenyl]formamido}butanoic acid

3-{[2-bromo-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylphenyl]formamido}butanoic acid

(2S)-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]formamido}pentanoic acid