6-bromo-3-ethyl-1-[2-(4-methoxyphenyl)-2-oxoethyl]-6H-quinazolin-1-ium-2,4-dione

3-({4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl}formamido)-2-methylbutanoic acid

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]ethyl}-1,3-thiazole-4-carboxylic acid

5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,2-dimethylbutanamido]-3-methyl-1,2-thiazole-4-carboxylic acid

2-[2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl}formamido)ethoxy]acetic acid

4-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]oxane-4-carboxylic acid

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]cyclobutyl}acetic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enamido]benzoic acid

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

2-(4-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanamido]methyl}-1H-1,2,3-triazol-1-yl)acetic acid

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