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