(2E)-3-[1-ethyl-6-(methoxymethyl)-4-(5-methyl-3-pyridinyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-2-propen-1-ol 、
乙氧甲酰基亚甲基三苯基膦 在
manganese dioxide silica gel 、
chloroform methanol 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以to give ethyl (2E,4E)-5-[1-ethyl-6-(methoxymethyl)-4-(5-methyl-3-pyridyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-2,4-pentadienoate (53 mg) as a colorless solid的产率得到ethyl (2E,4E)-5-[1-ethyl-6-(methoxymethyl)-4-(5-methyl-pyridin-3-yl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-2,4-pentadienoate