3-[2-(3,4-dimethoxyphenyl)-2-oxoethyl]-6-ethyl-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 在
potassium 2-ethylhexanoate 作用下,
以
四氢呋喃 、
乙酸乙酯 为溶剂,
反应 16.0h,
以53%的产率得到3-[2-(3,4-dimethoxyphenyl)-2-oxoethyl]-6-ethyl-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione potassium salt