1-ethoxycarbonyl-3-(3-phenoxybenzamido)-5-[(2-methylthio)pyrimidin-4-yl]pyrazolo[4,3-c]4,5,6,7-tetrahydropyridine 、
3-amino-1-ethoxycarbonylpyrazolo[4,3-c]4,5,6,7-tetrahydropyridine 在
potassium carbonate 作用下,
以
二甲基亚砜 为溶剂,
反应 4.0h,
以82%的产率得到3-amino-1-ethoxycarbonyl-5-[(2-methylthio)pyrimidin-4-yl]pyrazolo[4,3-c]4,5,6,7-tetrahydropyridine