4-hydroxy-3-(piperidin-4-yl)-4-(trifluoromethyl)-1,4,5,7-tetrahydro-6H-pyrazolo[3,4-b]pyridin-6-one hydrochloride 、
6-fluoro-3-(trifluoromethyl)pyridine-2-carbonitrile 在
N,N-二异丙基乙胺 作用下,
以
二甲基亚砜 为溶剂,
反应 0.33h,
以21%的产率得到6-{4-[4-hydroxy-6-oxo-4-(trifluoromethyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl]piperidin-1-yl}-3-(trifluoro)pyridine-2-carbonitrile