6,7-Dimethoxy-1-methyl-1H-isoquinoline-2-carboxylic acid (1S,2R,5S)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester 在
palladium on activated charcoal
氢气 作用下,
以95%的产率得到6,7-Dimethoxy-1-methyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid (1S,2R,5S)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester