tert-butyl ((3R,4R,5S)-1-(3-(3-amino-7-ethylquinoline-2-carboxamido)pyridin-4-yl)-4-((tert-butyldimethylsilyl)oxy)-5-methylpiperidin-3-yl)carbamate

tert-butyl (S)-(1-(3-(3-amino-7-ethylquinoline-2-carboxamido)-5-methylpyridin-4-yl)piperidin-3-yl)carbamate

3-amino-N-{4-[(3S)-3-aminopiperidin-1-yl]-5-methylpyridin-3-yl}-7-ethylquinoline-2-carboxamide

tert-butyl (S)-(1-(5-(3-amino-7-ethylquinoline-2-carboxamido)-2-methoxypyridin-4-yl)piperidin-3-yl)carbamate

3-amino-N-{4-[(3S)-3-aminopiperidin-1-yl]-6-methoxypyridin-3-yl}-7-ethylquinoline-2-carboxamide