6-methoxy-5-oxo-4H,5H-pyrazolo[1,5-a]pyrimidine-2-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(pyridin-3-yl)methyl]carbamoyl}propanoic acid

3-[(5-chloropyridin-2-yl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]pentanoic acid

2-{[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}butanoic acid

3-cyclopropyl-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]-2,2-difluoropropanoic acid

3-cyclopropyl-3-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}-2,2-difluoropropanoic acid

3-cyclopropyl-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]-2,2-difluoropropanoic acid

3-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-3-cyclopropyl-2,2-difluoropropanoic acid

4-(2-Methylpropyl)-6-(pyrrolidin-3-yloxy)pyrimidine

3-cyclopropyl-3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2,2-difluoropropanoic acid