3-(5-bromo-6-fluoropyridin-2-yl)-5-(pyridin-3-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazolo[3,4-c]pyridine 、
(R)-(+)-3-羟基哌啶盐酸盐 以291 was obtained as an off-white solid (11.0 mg, 29.9%) over two steps的产率得到(R)-1-(3-bromo-6-(5-(pyridin-3-yl)-1H-pyrazolo[3,4-c]pyridin-3-yl)pyridin-2-yl)piperidine-3-ol