benzo[d]isoxazole-5-carbaldehyde   、                                                                                      N-(2-((4-(2-(Ethylamino) ethyl) phenyl) carbamoyl)-4,5-dimethoxyphenyl)-4-oxo-4H-chromene-2-carboxamide trifluoroacetate salt                                                                                                                                                                                                                                                                                                          以38%的产率得到N-(2-((4-(2-((Benzo[d]isoxazol-5-ylmethyl) (ethyl) amino) ethyl) phenyl) carbamoyl)-4,5-dimethoxyphenyl)-4-oxo-4H-chromene-2-carboxamide