1-((4-Fluorophenyl)thio)-3-methoxypropan-2-one

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

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[({6-oxabicyclo[3.2.1]octan-2-yl}methyl)carbamoyl]propanoic acid

4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-3-methylbutanoic acid

2-(2-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}acetyl)-2-azabicyclo[2.1.1]hexane-5-carboxylic acid

(1RS,6SR)-2-[(2RS&,3SR&)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-2-azabicyclo[4.1.0]heptane-1-carboxylic acid

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-4,4-difluorobutanoic acid

rac-(1R,2S)-2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]cyclohexane-1-carboxylic acid

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

rac-3-{1-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cycloheptyl]-N-methylformamido}propanoic acid

(2S,3R)-3-(benzyloxy)-2-{2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetamido}butanoic acid