4-[3-Nitro-5-(trifluoromethyl)phenyl]but-3-en-2-amine

5-{N-ethyl-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-3-yl]formamido}pentanoic acid

5-{N-ethyl-2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]acetamido}pentanoic acid

7-{2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetyl}-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

7-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-3-azabicyclo[3.1.0]hexane-6-carboxylic acid

3-{1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]pyrrolidin-2-yl}propanoic acid

2-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}butanoic acid

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

2-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetyl)-octahydrocyclopenta[c]pyrrole-1-carboxylic acid

1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanamido}cyclobutane-1-carboxylic acid