反应详情

By substituting the 2,6-dimethyl-8-ethyl-4H-pyrazolo-[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one obtained in Example 16 in the procedure of Example 4 and substituting 2-chloroethylamine for the dimethylaminopropyl chloride, 4-(2-aminoethyl)-2,6-dimethyl-8-ethyl-4H-pyrazolo-[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one is obtained.