2-Benzyl-10-hydroxy-5,5-dimethyl-8-(1-methyl-4-p-tolybutyl)-1,2,3,4-tetrahydro-5H-<1>-benzopyrano-<3,4-d>-pyridin 在
palladium on activated charcoal 作用下,
以
乙醇 为溶剂,
生成
5,5-dimethyl-8-(1-methyl-4-p-tolyl-butyl)-1,3,4,5-tetrahydro-2H-chromeno[4,3-c]pyridin-10-ol