ethyl 1-{3-[bis(ethyloxy)phosphoryl]propyl}-7-[(4-fluorophenyl)methyl]-4-hydroxy-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxylate   、                                                                                      
2-甲氧基乙胺                                                                                                                                                              在
                                                                                                                                                                                 
氯仿                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以gave the title compound as a white solid (29 mg, 56%)的产率得到diethyl {3-[7-((4-fluorophenyl)methyl)-4-hydroxy-3-{[(2-(methyloxy)ethyl)amino]carbonyl}-2-oxo-1,5-naphthyridin-1(2H)-yl]propyl}phosphonate