反应详情

By substituting dihydropyridazine for the 3-(dimethylamino)propylamine in the procedure of Example 1 (c), 8-ethyl-5-(dihydropyridazin-1-yl)-8H-pyrazolo[4',3':5,6]pyrido[3,4-e]-[1,2,4]triazolo[1,5-a]pyrimidine is obtained.