6-tert-butoxy-8-(tert-butyldimethyl-silanyloxy)-9-hydroxy-1,5-dimethyl-2-oxa-bicyclo[3.3.1]nonan-3-one 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 48.0h,
生成 (3aR,4S,7R)-4-tert-butoxy-6-(tert-butyldimethylsilyloxy)-7-hydroxy-3a,7-dimethylhexahydrobenzofuran-2(3H)-one