2,2-dimethyl-propionic acid 3-(2-methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrazolo[3,4-b]pyridin-1-ylmethyl ester 、
3-溴扁桃酸 在
dichloro[1,1′-bis(diphenylphosphino)ferrocene)palladium (II) dichloromethane adduct
乙酸乙酯 、 Brine 、
Sodium sulfate-III 作用下,
以
acetonitrile tetrahydrofuran 为溶剂,
反应 4.0h,
以afforded hydroxy-{3-[1-hydroxymethyl-3-(2-methoxy-phenyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-phenyl}-acetic acid (1.7 g, 35% yield)的产率得到hydroxy-{3-[1-hydroxymethyl-3-(2-methoxy-phenyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-phenyl}-acetic acid-1-ylmethyl ester