2-(3-(Difluoromethyl)azetidin-1-yl)pyrazine

5-(difluoromethyl)-3-(1H-pyrrol-2-yl)-1,2-oxazole-4-carboxylic acid

3-(3-Cyanopyrrolidin-1-yl)-2,2-difluoropropanoic acid

2,2-Difluoro-3-(2-oxo-2,3-dihydro-1,3-thiazol-3-yl)propanoic acid

2,2-Difluoro-3-(6-oxo-1,6-dihydropyridazin-1-yl)propanoic acid

2,2-difluoro-3-(3-methyl-2-oxo-2,3-dihydro-1H-imidazol-1-yl)propanoic acid

1-[(tert-butoxy)carbonyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}(1-methylpiperidin-4-yl)amino)piperidine-4-carboxylic acid

2-[(2S)-1-[(tert-butoxy)carbonyl]piperidin-2-yl]-2-[(3,3-difluorobutyl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]propanoic acid

2-(propan-2-yl)-2H-pyrazolo[4,3-b]pyridine-6-carboxylic acid

2-{1-[(tert-butoxy)carbonyl]piperidin-4-yl}-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}[(1s,3s)-3-ethoxycyclobutyl]amino)propanoic acid

2-{1-[(tert-butoxy)carbonyl]piperidin-4-yl}-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}[1-(propan-2-yl)piperidin-4-yl]amino)propanoic acid