1-oxaspiro[4.5]deca-3,6,9-triene-2,8-dione 、
(7aS)-1-(4-methoxyphenyl)-7a-methyl-4,5,6,7-tetrahydroindene 以
氯仿 为溶剂,
反应 48.0h,
以91%的产率得到(1'S,2'S,5S,7'R,8'R,9'S)-8'-(4-methoxyphenyl)-9'-methylspiro[oxolane-5,3'-tetracyclo[6.5.2.01,9.02,7]pentadeca-4,14-diene]-2,6'-dione