1-[2-(Methylsulfanyl)ethyl]cyclobutane-1-carbaldehyde

3-{N-cyclopropyl-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}propanoic acid

1-{[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanamido]methyl}cyclobutane-1-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[1-(2-methoxyethyl)-1H-pyrazol-4-yl]carbamoyl}propanoic acid

3-{[1-(3-bromophenyl)ethyl]carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-(3-methyl-5-oxopiperazin-1-yl)-5-oxopentanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(prop-2-en-1-yloxy)carbamoyl]propanoic acid

4-[(3-bromo-5-fluorophenyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

3-[N-tert-butyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]propanoic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluoro-N-methylbutanamido]cyclopentane-1-carboxylic acid

rac-(1R,2S)-2-{[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}cyclopentane-1-carboxylic acid