Enantioselective Total Syntheses of Three Cladiellins (Eunicellins): A General Approach to the Entire Family of Natural Products
作者:J. Stephen Clark、Raphaëlle Berger、Stewart T. Hayes、Lynne H. Thomas、Angus J. Morrison、Luca Gobbi
DOI:10.1002/anie.201005508
日期:2010.12.17
Stereoselective rearrangement of a free or metal‐bound oxonium ylide, generated by rhodium‐catalyzed intramolecular cyclization of the diazo ketone 1, afforded E‐configured O‐bridged bicyclic ether (E)‐2, which was efficiently transformed into (−)‐cladiella‐6,11‐dien‐3‐ol. TBS=tert‐butyldimethylsilyl.
铑催化重氮酮1的分子内环化反应生成的游离或与金属结合的叶立德叶立德的立体选择性重排,提供了E构型的O桥联双环醚(E)-2,可将其有效转化为(-)-cladiella ‐6,11‐dien‐3‐ol。TBS =叔丁基二甲基甲硅烷基。