3-butenyllithium 、 (3aS,6aS,7S,10R,11S,11aS,11bS)-7,11-Bis-benzyloxy-10-(tert-butyl-dimethyl-silanyloxy)-2,2,9,9-tetramethyl-6-methylene-decahydro-1,3-dioxa-cycloocta[de]naphthalen-8-one 以
四氢呋喃 为溶剂,
以89%的产率得到(3aS,6aS,7S,8S,10R,11S,11aS,11bS)-7,11-Bis-benzyloxy-8-but-3-enyl-10-(tert-butyl-dimethyl-silanyloxy)-2,2,9,9-tetramethyl-6-methylene-dodecahydro-1,3-dioxa-cycloocta[de]naphthalen-8-ol