benzyl 6-[2-(4-cyanophenyl)-1H-indol-5-yl]-5-ethyl-2,4-bis(phenylmethoxy)pyridine-3-carboxylate 在
palladium 10% on activated carbon 、
氢气 作用下,
以
乙酸乙酯 为溶剂,
反应 3.0h,
以50%的产率得到6-(2-(4-cyanophenyl)-1H-indol-5-yl)-5-ethyl-4-hydroxy-2-oxo-1,2-dihydropyridine-3-carboxylic acid