[(2R,3S,4R,5R)-3,4-dibenzoyloxy-5-chlorooxolan-2-yl]methyl benzoate 、
9-acetyloxy-5,11-dimethyl-6H-pyrido[4,3-b]carbazole 在
无水碳酸镉 作用下,
以
硝基甲烷 为溶剂,
以74%的产率得到9-Acetoxy-2-((2R,3R,4S,5R)-3,4-bis-benzoyloxy-5-benzoyloxymethyl-tetrahydro-furan-2-yl)-5,11-dimethyl-6H-pyrido[4,3-b]carbazol-2-ium; chloride