(4S,4aR,7S,10R,12R,12aR)-4-<(tert-butyl)dimethylsilyloxy>perhydro-7-hydroxy-12a,13,13-trimethyl-6-oxo-7,10-methano-2H-benzocyclodecen-12-yl acetate 在
potassium tert-butylate 作用下,
以
叔丁醇 为溶剂,
以89%的产率得到(4R,4aR,4bS,6S,9R,10aS,10bS)-4-<(tert-butyl)dimethylsilyloxy>perhydro-6-hydroxy-10b,11,11-trimethyl-6,9-methanobenzo<3,4>cyclobuta<1,2>cycloocten-5(2H)-one