在
三氯化铁 、
对甲苯磺酸 作用下,
生成 (1S,2S)-7-Hydroxy-1-(4-hydroxy-3,5-dimethoxy-phenyl)-6,8-dimethoxy-1,2-dihydro-naphthalene-2,3-dicarboxylic acid bis-((R)-methoxycarbonyl-phenyl-methyl) ester 、 (1S,2R)-7-Hydroxy-1-(4-hydroxy-3,5-dimethoxy-phenyl)-6,8-dimethoxy-1,2-dihydro-naphthalene-2,3-dicarboxylic acid bis-((R)-methoxycarbonyl-phenyl-methyl) ester 、 (1R,2S)-7-Hydroxy-1-(4-hydroxy-3,5-dimethoxy-phenyl)-6,8-dimethoxy-1,2-dihydro-naphthalene-2,3-dicarboxylic acid bis-((R)-methoxycarbonyl-phenyl-methyl) ester