2-{[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)heptanamido]methyl}-2-methylbutanoic acid

1-{2-[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidin-4-yl]acetamido}cyclopropane-1-carboxylic acid

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

2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enamido]methyl}cyclohexane-1-carboxylic acid

2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylphenyl]formamido}pent-4-ynoic acid

3-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopentaneamido}cyclopentane-1-carboxylic acid

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

1-[({2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1,3-thiazol-4-yl}formamido)methyl]cyclopropane-1-carboxylic acid

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

2-{[4-chloro-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}pent-4-enoic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylpropanamido]-6-fluorobenzoic acid