6-[6-(4-methylpiperazin-1-yl)-pyridin-3-yl]-1,2,3,4-tetrahydro[1,8]naphthyridin-4-ol   、                                                                                      
2-氯-3,6-二氟苯酚                                                                                                                                                                                              以
                                                                                         
methanol-dichloromethane                                                                                  为溶剂,
                                                                                                                                                                                        以gave the title compound as a yellow foam (54% yield)的产率得到4-(2-chloro-3,6-difluorophenoxy)-6-[6-(4-methylpiperazin-1-yl)-pyridin-3-yl]-1,2,3,4-tetrahydro[1,8]naphthyridine