(1S,4R)-5,9-dihydroxy-5,9-bis(hydroxymethyl)-1,4a,5,8a-tetrahydro-1,4-ethanonaphthalene-6,10(4H)-dione 、
对甲氧基苯甲酰氯 在
caesium carbonate 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以69%的产率得到((1S,4R,4aR,8aS)-5,9-dihydroxy-6,10-dioxo-1,4,4a,5,6,8a-hexahydro-1,4-ethanonaphthalene-5,9-diyl)bis(methylene) bis(4-methoxybenzoate)