反应详情

By substituting the 2-methyl-4H-pyrazolo[1,5-a]pyrazolo-[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one of Example 8 for the 8-ethyl-2-methyl-4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]-pyrido[3,4-e]pyrimidin-5(8H)-one and benzyl iodide for the methyl iodide in the procedure of Example 1 c, 2-methyl-4-phenylmethyl-4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido-[3,4-e]pyrimidin-5(8H)-one is obtained.