ethyl 2-((2S,2aR,2a1R,4S,4aR,5R,7aS,8S)-8-bromo-5-((tert-butyldimethylsilyl)oxy)-2a,2a1,3,4,4a,5-hexahydro-2,4-methanoindeno[7,1-bc]furan-7a(2H)-yl)acetate 在
锂硼氢 作用下,
以
四氢呋喃 为溶剂,
以59%的产率得到2-((2S,2aR,2a1R,4S,4aR,5R,7aS,8S)-8-bromo-5-((tert-butyldimethylsilyl)oxy)-2a,2a1,3,4,4a,5-hexahydro-2,4-methanoindeno[7,1-bc]furan-7a(2H)-yl)ethan-1-ol