Benzyl 3-(1,2-dihydroxyethyl)azetidine-1-carboxylate

2-(1-{[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]methyl}cyclobutyl)acetic acid

(1RS,2RS,4SR)-7-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-7-azabicyclo[2.2.1]heptane-2-carboxylic acid

2-[(2S)-1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoyl]piperidin-2-yl]acetic acid

2-[(2S)-1-[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]piperidin-2-yl]acetic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(propan-2-yl)butanoyl]-5-oxopyrazolidine-3-carboxylic acid

3-[N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxybutanamido]propanoic acid

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

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

2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]propanamido}butanoic acid

2-{4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]phenyl}propanoic acid