作者:Lokesh Chandra Pati、Arnab Roy、Debabrata Mukherjee
DOI:10.1016/s0040-4020(02)00063-7
日期:2002.2
straightforward manner. An intramolecular anionic cyclisation then afforded a tricyclic dienone which was stereoselectively converted into a mesylate through various intermediates. Base induced rearrangement furnished a trans-fused ketone as the sole product which was converted into (±)-zizaene through Wittig olefination.
描绘了一种立体控制的方法来构造与倍半萜烯zizaene有关的三环[6.2.1.0 1,5 ]十一烷环系。从茚满酮开始,以简单的方式制备了溴酚。然后,分子内阴离子环化得到三环二烯酮,其通过各种中间体被立体选择性地转化为甲磺酸酯。碱诱导的重排提供了反熔的酮作为唯一产物,其通过维蒂希烯化反应转化为(±)-zi氮烯。