tert-Butyl 4-{[3-(3-oxo-2-isopropyl-2,3-dihydropyridazin-6-yl)-2-phenylpyrazolo[1,5-a]pyridin-5-yl]oxy}-1-piperidinecarboxylate 、 ethyl acetate hydrochloride 在
resultant precipitate 、
乙酸乙酯 作用下,
以
乙酸乙酯 为溶剂,
反应 17.5h,
以to give 5-(4-Piperidinyloxy)-3-(3-oxo-2-isopropyl-2,3-dihydropyridazin-6-yl)-2-phenylpyrazolo [1,5-a]pyridine hydrochloride (1.06 g)的产率得到5-(4-piperidinyloxy)-3-(3-oxo-2-isopropyl-2,3-dihydropyridazin-6-yl)-2-phenylpyrazolo[1,5-a]pyridine hydrochloride