2-[2-(tert-Butoxycarbonyl-methyl-amino)-3-(4-hydroxy-5,7,8-trimethoxy-6-methyl-1-vinyl-3,4-dihydro-1H-isoquinolin-2-yl)-3-oxo-propyl]-2-dimethoxymethyl-malonic acid dimethyl ester 在
Collins oxidation agent 、
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 7.0h,
生成 2-[(R)-2-(Formyl-methyl-amino)-3-oxo-3-((S)-5,7,8-trimethoxy-6-methyl-4-oxo-1-vinyl-3,4-dihydro-1H-isoquinolin-2-yl)-propyl]-malonic acid dimethyl ester