1-[3-(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dion-7-yl)-2-hydroxypropyl]-4-(3-phenylsulfinylpropyl)piperazine dihydrochloride 、
potassium carbonate 在
水 、
magnesium sulfate 作用下,
以
乙醚 为溶剂,
以to yield 1-[3-(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dion-7-yl)-2-hydroxypropyl]-4-(3-phenylsulfinylpropyl)piperazine as the free base的产率得到1-[3-(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dion-7-yl)-2-hydroxypropyl]-4-(3-phenylsulfinylpropyl)piperazine