1-(2,4-dimethoxybenzyl)-4-hydroxy-7-methyl-2-oxo-9-(pyrrolidin-1-yl)-2,5,6,7-tetrahydro-1H-benzo[b]pyrido[2,3-d]azepine-3-carboxylic acid 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以95%的产率得到4-hydroxy-7-methyl-2-oxo-9-(pyrrolidin-1-yl)-2,5,6,7-tetrahydro-1H-benzo[b]pyrido[2,3-d]azepine-3-carboxylic acid