1-[4-(4-phenyl-1,2,3,6-tetrahydropyridin-1-yl)butyl]-7-nitro-2,4(1H,3H)-quinazolinedione   、                                                                                      
氯化亚锡                                                                                                                                                              在
                                                                                                                                                                                 
氢氧化钾   、                                                                                                  
氯仿   、                                                                                                  
magnesium sulfate   、                                                                                                  
盐酸   、                                                                                                  
甲醇                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以1-[4-(4-Phenyl-1,2,3,6-tetrahydropyridin-1-yl)butyl]-7-amino-2,4(1H,3H)-quinazolinedione hydrochloride (546 mg) as a crystal was obtained by recrystallization from 10% hydrogen chloride in methanol的产率得到1-[4-(4-phenyl-1,2,3,6-tetrahydropyridin-1-yl)butyl]-7-amino-2,4(1H,3H)-quinazolinedione hydrochloride