反应详情

By substituting dimethylaminomethyl chloride for the dimethylaminopropyl chloride in the procedure of Example 4 and utilizing 2-methyl-8-phenyl-4H-pyrazolo[1,5-a]pyrazolo-[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one product of Example 15 instead of 8-ethyl-2-methyl-4H-pyrazolo[1,5-a]pyrazolo-[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one, 4-dimethylaminomethyl-2-methyl-8-phenyl-4H-pyrazolo[1,5-a]pyrazolo-[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one is obtained.