(4aR,5S,8aS)-7-Acetoxy-6-methoxy-4a,5,8,8a-tetrahydro-1H-isoquinoline-2,5-dicarboxylic acid dimethyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙酸乙酯 为溶剂,
以95%的产率得到(4aS,5S,8aS)-7-Acetoxy-6-methoxy-3,4,4a,5,8,8a-hexahydro-1H-isoquinoline-2,5-dicarboxylic acid dimethyl ester