5-[2-ethoxy-5-(1-methyl-3-ethoxypropane-1,3-dione-2-ylsulfonyl)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 、
乙二胺 在
lanthanum(III) nitrate hexahydrate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以69%的产率得到5-[2-ethoxy-5-(7-methyl-2,3,4,6-tetrahydro-5H-1,4-diazepin-5-one-6-sulphonyl)phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one