N-(3-ethynylphenyl)-5,6,7,8-tetrahydropyrido[4',3':4,5]furo[2,3-d]pyrimidin-4-amine   、                                                                                      (2E)-4-[methyl(1-methylethyl)amino]but-2-enoic acid hydrochloride                                                                                                                                                                                                                                                                                                          以to yield 82 mg (55%)的产率得到N-(3-ethynylphenyl)-7-{(2E)-4-[isopropyl(methyl)amino]but-2-enoyl}-5,6,7,8-tetrahydropyrido[4',3':4,5]furo[2,3-d]pyrimidin-4-amine