6,7-Dimethoxy-3-(4-oxo-piperidine-1-carbonyl)-1-(3,4,5-trimethoxy-phenyl)-naphthalene-2-carboxylic acid methyl ester 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 0.5h,
以90%的产率得到3-(4-Hydroxy-piperidine-1-carbonyl)-6,7-dimethoxy-1-(3,4,5-trimethoxy-phenyl)-naphthalene-2-carboxylic acid methyl ester