(1S,5R,6S)-3-[(E)-3,3-dimethylbut-1-enyl]-5-hydroxy-7-oxabicyclo[4.1.0]hept-3-en-2-one 反应 24.0h,
以90%的产率得到(1S,2S,3R,4S,6S,10R,11R,13S,15S,16R)-10-tert-butyl-11-[(E)-3,3-dimethylbut-1-enyl]-3,16-dihydroxy-5,14-dioxapentacyclo[9.5.0.02,8.04,6.013,15]hexadec-8-ene-7,12-dione