1-[(3-Fluorophenyl)methyl]azetidine-3-carboxylic acid

(2S)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanoyl]-2,3-dihydro-1H-indole-2-carboxylic acid

3-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-2,2-difluoropropanoic acid

rac-2-{3-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido]cyclobutyl}acetic acid

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

(1RS&,2SR&)-2-({[(1RS,3RS)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}methyl)cyclopropane-1-carboxylic acid

(2R)-2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxan-4-yl]formamido}-3-hydroxypropanoic acid

rac-(1R,2S)-2-({2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]acetamido}methyl)cyclopropane-1-carboxylic acid

3-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]formamido}-2-methylbutanoic acid

3-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]formamido}-2,2-dimethylpropanoic acid

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