Ethyl 2-ethyloctanoate

rac-1-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropanecarbonyl]-6-methylpiperidine-3-carboxylic acid

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

rac-4-{[(1R,3S)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopropyl]formamido}pentanoic acid

(2R)-2-{[(1RS,3SR)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopropyl]formamido}pentanoic acid

rac-4-[(1R,3S)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopropanecarbonyl]morpholine-2-carboxylic acid

3-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropyl}formamido)-2-methylpropanoic acid

2-(N-benzyl-1-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-4-yl}formamido)acetic acid

2-[N-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxybutanamido]acetic acid

2-[N-benzyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanamido]acetic acid

4-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylcyclohexyl]formamido}-2-methylbut-2-enoic acid