3-cyclohexyl-6-{4-[[2-(dimethylamino)ethyl](methyl)amino]-2-methoxyphenyl}-1-methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one 、
甲烷磺酸 在
乙酸乙酯 、
乙醚 作用下,
以
甲醇 为溶剂,
以to obtain 89 mg (55%) of the captioned compound的产率得到3-cyclohexyl-6-{4-[[2-(dimethylamino)ethyl](methyl)amino]-2-methoxyphenyl}-1-methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one monomethanesulfonate