3-cyclohexyl-6-{2-methoxy-4-[(1-methyl-4-piperidinyl)oxy]phenyl}-1-methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one 、
顺丁烯二酸 以
乙醇 为溶剂,
以41%的产率得到3-cyclohexyl-6-{2-methoxy-4-[(1-methyl-4-piperidinyl)oxy]phenyl}-1-methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one monomaleate