Methyl 1,6-dimethyl-3-(1,4-dioxaspiro[4,5]decane-7-yl)-4-(3-nitrophenyl)-4,7-dihydropyrazolo[3,4-b]pyridine-5-carboxylate 在
盐酸 作用下,
以
1,4-二氧六环 、
二氯甲烷 为溶剂,
以73.3%的产率得到methyl 1,6-dimethyl-4-(3-nitrophenyl)-3-(3-oxocyclohexyl)-4,7-dihydropyrazolo[3,4-b]pyridine-5-carboxylate