3-(6-fluoropyridin-2-yl)-5-(1-ethyl-1H-pyrazol-4-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-c]pyridine 、
(R)-3-Boc-氨基哌啶 以to give 285 as a white solid (41.6% over two steps)的产率得到(R)-1-(6-(5-(1-ethyl-1H-pyrazole-4-yl)-1H-pyrazolo[3,4-c]pyridine-3-yl)pyridin-2-yl)piperidin-3-amine