2-[4-[7-methyl-3,9-dioxo-2-(oxolan-2-ylmethyl)-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrol-1-yl]phenoxy]acetamide

rac-(1R,5R,6S)-6-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]bicyclo[3.2.0]heptane-3-carboxylic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,4,4-trimethylpentanamido]-2-methylpropanoic acid

(2S)-4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-2-hydroxybutanoic acid

5-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylhexanamido]pentanoic acid

2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoyl]-4-methyl-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

2-{[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]oxy}acetic acid

3-[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]-2-hydroxy-2-methylpropanoic acid

1-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-4-ethylpiperidine-4-carboxylic acid

3-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]acetamido}-2-(propan-2-yl)butanoic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]-2-(propan-2-yl)butanoic acid