(7R,9s,11S)-12,12-dimethoxy-9-methyl-8,9,10,11-tetrahydro-7H-7,11-methanocycloocta[de]naphthalene-9-carboxylic acid 在
sodium hydroxide 、
hydroxide 、
溴 作用下,
以
水 为溶剂,
生成 12,12-dimethoxy-2,3-endo-epoxy-11a-endo-hydroxy-1-exo,4-dibromo-7,11-methano-9-methyl-11a,1,2,3,4,8,9,10,11-octahydro-7H-cycloocta(de)naphthalene-9-endo-carboxylic acid δ lactone