tert-butyl ((3R,4R)-1-(6-(5-((tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxamido)thieno[3,2-b]pyridin-7-yl)-4-((tert-butyldimethylsilyl)oxy)piperidin-3-yl)carbamate

tert-butyl (3R,4R)-1-(3-aminopyridin-4-yl)-4-(tert-butyldimethylsilyloxy)piperidin-3-ylcarbamate

tert-butyl ((3R,4R)-1-(3-(5-((tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxamido)-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)-4-((tert-butyldimethylsilyl)oxy)piperidin-3-yl)carbamate

(3R,4R)-5-amino-N-{4-[3,4-trans-3-amino-4-hydroxypiperidin-1-yl]-6,7-dihydro-5H-cyclopenta[b]pyridin-3-yl}-2-(2,6-difluorophenyl)-1,3-thiazole-4-carboxamide

tert-butyl (3R,4R)-(1-(3-amino-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)-3,4-trans-4-{[tert-butyl(dimethyl)silyl]oxy}piperidin-3-yl)carbamate