4-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(1H-imidazol-4-yl)propanamido]but-2-ynoic acid

2-(2-Chloro-1-benzofuran-3-yl)-2,2-difluoroacetic acid

1-[2-(Dimethylamino)pyridin-3-yl]-4,4-difluorocyclohexane-1-carboxylic acid

1-Bromo-2-(1-ethynylcyclopropyl)-4-(trifluoromethyl)benzene

4,4'-(9,9-Diethyl-9H-fluorene-2,7-diyl)dibenzaldehyde

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

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

1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,2-dimethylpentanamido]cyclobutane-1-carboxylic acid

4-[N-methyl4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-3-amido]oxolane-3-carboxylic acid

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

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