N-(3,4-dichlorophenyl)-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 86 mg (61%)的产率得到N-(3,4-dichlorophenyl)-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