1-((2-Hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)methyl)-3-(naphthalen-1-ylmethyl)urea

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,2-dimethylbutanamido]cyclobutane-1-carboxylic acid

rac-2-({2-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}methyl)-3-methylbutanoic acid

3-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}-2,2-difluoropropanoic acid

2-ethyl-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-3-carbonyl]pyrrolidine-3-carboxylic acid

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

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

rac-5-{[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}hexanoic acid

4-(2-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}acetamido)hexanoic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanoyl]-3-hydroxyazetidine-3-carboxylic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{methyl[2-(1H-pyrazol-1-yl)ethyl]carbamoyl}butanoic acid