3-(5-bromo-6-fluoropyridin-2-yl)-5-(pyridin-3-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazolo[3,4-c]pyridine 、
(S)-3-Boc-氨基哌啶 以289 was obtained as an off-white solid (17.8 mg, 22.32%) over two steps的产率得到(S)-1-(3-bromo-6-(5-(pyridin-3-yl)-1H-pyrazolo[3,4-c]pyridine-3-yl)pyridin-2-yl)piperidin-3-amine