4-Nitro-3-(trifluoromethoxy)aniline

(2S)-4-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1-methyl-1H-pyrazol-5-yl}formamido)-2-hydroxybutanoic acid

(2R)-2-[(2S,3R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]-3-methylbutanoic acid

(3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(methoxymethyl)butanamido]-4-methylpentanoic acid

(3R)-3-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-4-methylpentanoic acid

3-{N-ethyl-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazol-4-yl]formamido}butanoic acid

1-Ethyl-8-propyl-1,8-diazaspiro[4.5]decan-4-amine

(3R)-3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4-methylpentanamido}-4-methylpentanoic acid

(7R,9S)-1-ethyl-7,9-dimethyl-8-oxa-1-azaspiro[4.5]decan-4-amine

(3R)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2,3-trimethylbutanamido]-4-methylpentanoic acid

4-{N-ethyl-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}butanoic acid