2-methyl-1-(4-prop-2-enoxyphenyl)-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrole-3,9-dione

2-[(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}ethyl)sulfanyl]acetic acid

2-({2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3,3-trifluoro-2-methylpropanamido]ethyl}sulfanyl)acetic acid

2-[(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methyl-1,3-thiazol-5-yl]formamido}ethyl)sulfanyl]acetic acid

3-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetamido)hexanoic acid

5-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetamido)-4-methylpentanoic acid

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

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

3-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}benzoic acid

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

5-chloro-2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]benzoic acid