3-{[(Benzyloxy)carbonyl]amino}-4-chlorobenzoic acid

2-(1-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-imidazol-4-yl}-N-(2-hydroxyethyl)formamido)acetic acid

2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(2-hydroxyethyl)-2-methylheptanamido]acetic acid

2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(2-hydroxyethyl)-4,4-dimethylhexanamido]acetic acid

2-[4-ethyl-6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(2-hydroxyethyl)hexanamido]acetic acid

2-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}-2-(thiophen-2-yl)acetic acid

Methyl 2-hydroxy-2-[1-(4-methoxyphenyl)cyclopropyl]acetate

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

3-({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1H-1,2,3-triazol-4-yl}formamido)-2-methoxypropanoic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxypropanamido]-5-methylbenzoic acid

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