benzyl 2,4-bis(benzyloxy)-5-methoxy-6-(1-methyl-1H-indol-5-yl)nicotinate 在
钯 氢气 、
乙醚 作用下,
以
乙酸乙酯 为溶剂,
反应 2.0h,
以to give 4-hydroxy-5-methoxy-6-(1-methyl-1H-indol-5-yl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (27 mg, 69%)的产率得到4-hydroxy-5-methoxy-6-(1-methyl-1H-indol-5-yl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid