25-(3R,5S,7S,9S,11S,15R,19RS,23S,25R,26R,16E)-7-benzyloxy-3,23,26-tris-tert-butyldimethylsilyloxy-5,9-epoxy-11,15-epoxy-19-hydroxy-13,21-bis-[(Z)-2-triisopropylsilyloxyethylidene]-9-methoxy-8,8,18,18-tetramethylheptacos-16-enolide 在
四丁基氟化铵 、
溶剂黄146 作用下,
以
四氢呋喃 为溶剂,
反应 40.0h,
以53%的产率得到25-(3R,5S,7S,9S,11S,15R,19RS,23S,25R,26R,16E)-7-benzyloxy-3,23,26-tris-tert-butyldimethylsilyloxy-5,9-epoxy-11,15-epoxy-19-hydroxy-13,21-bis[(Z)-2-hydroxyethylidene]-9-methoxy-8,8,18,18-tetramethylheptacos-16-enolide