(2R,3R,11bS)-3-Ethyl-1,3,4,6,7,11b-hexahydro-8-hydroxy-9,10-dimethoxy-2H-benzo(a)quinolizine-2-acetaldehyde (8-Hydroxyprotoemetine) 在
高氯酸 作用下,
以
乙醇 、
水 为溶剂,
以91%的产率得到(2R,3R,11bS)-3-Ethyl-1,3,4,6,7,11b-hexahydro-8-hydroxy-9,10-dimethoxy-2H-benzo(a)quinolizine-2-acetaldehyde Perchlorate (8-Hydroxyprotoemetine Perchlorate)