(3R,7R,9R)-2',12,13-trimethoxyspiro[5-oxatricyclo[8.4.0.03,7]tetradeca-1(14),10,12-triene-9,4'-cyclohexa-2,5-diene]-1',6-dione 在
高氯酸 作用下,
以
氯仿 为溶剂,
反应 1.0h,
以100%的产率得到rel(1a,12aR
a,6R,7R)-11-hydroxy-6-hydroxymethyl-2,3,10-trimethoxy-5,6,7,8-tetrahydrodibenzo<1a,4a:8a,12a>cyclooctene-7-carboxylic acid lactone