1,3-dimethyl-6{2-[(hydroxymethyl)amino]ethylamino}-2,4-(1H,3H)-pyrimidinedione   、                                                                                      3-(2-phenyl-3-methyl-4-oxo-4H-1-benzopyran-5-yl)oxypropyl bromide   、                                                                                      
草酸酯   、                                                                                      
1,3-dimethyl-6-(2-[N-hydroxyethyl-N-[3-(2-phenyl-3-methyl-4oxo-4H-1-benzopyran-5yl)oxypropyl]amino]ethylamino)-2,4(1H,3H)-pyrimidinedione oxalate                                                                                                                                                              在
                                                                                                                                                                                 
氯仿   、                                                                                                  
水   、                                                                                                  
Sodium sulfate-III   、                                                                                                  silica gel   、                                                                                                  
甲醇                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺   、                                                                                         
三乙胺                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以to obtain 0.75 g (yield 55%) of 1,3-dimethyl-6-(2-[N-hydroxyethyl-N-[3-(2-phenyl-3-methyl-4-oxo-4H-1-benzopyran-5-yl)oxypropyl]amino]ethyl-amino)-2,4(1H,3H)-pyrimidinedione (the non-oxalate of Compound 17)的产率得到1,3-dimethyl-6-(2-[N-hydroxyethyl-N-[3-(2-phenyl-3-methyl-4-oxo-4H-1-benzopyran-5-yl)oxypropyl]amino]ethyl-amino)-2,4(1H,3H)-pyrimidinedione