N-((8-hydroxy-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)methyl)furan-3-carboxamide

1-[(Benzyloxy)carbonyl]-4-phenylpiperidine-2-carboxylic acid

2-(1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropanecarbonyl}-3-oxopiperazin-2-yl)acetic acid

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

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

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

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

rac-2-[(1R,3S)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopropanecarbonyl]-2-azabicyclo[2.1.1]hexane-5-carboxylic acid

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

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

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