2-(Difluoromethoxy)-4-(3,5-dimethylpiperidin-1-yl)aniline

(2S,4R)-1-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetyl}-4-hydroxypyrrolidine-2-carboxylic acid

rac-2-cyclopropyl-2-{[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopentyl]formamido}propanoic acid

(2R)-1-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutanecarbonyl}piperidine-2-carboxylic acid

3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanamido}oxolane-3-carboxylic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enamido]-4,4-dimethylpentanoic acid

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

2-[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-methylpentanoic acid

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

2-ethyl-2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]methyl}butanoic acid

3-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-en-1-yl]formamido}hexanoic acid