丙酮酸 、
3-benzyl-2-hydrazino-6,6-dimethyl-3,5,6,8-tetrahydro-4H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidin-4-one 以
乙醇 为溶剂,
反应 10.0h,
以65%的产率得到5-benzyl-2,8,8-trimethyl-7,10-dihydro-1H,8H-pyrano[4',3':4,5]thieno[2,3:4'',5'']pyrimido[2,3-c][1,2,4]triazine-1,6(5H)-dione