作者:Kenshu Fujiwara、Daisuke Sato、Manabu Watanabe、Hiroshi Morishita、Akio Murai、Hidetoshi Kawai、Takanori Suzuki
DOI:10.1016/j.tetlet.2004.05.020
日期:2004.6
Concise construction of the trans-fused 7/7/6/6 tetracyclic ether part of hemibrevetoxin B (1) was achieved by a convergent strategy based on coupling reaction of an acyl anion equivalent, reductive cyclization of an α,ε-dihydroxyketone, and introduction of a methyl group at the central ring junction by the Nicolaou method. The resultant tetracyclic ether was transformed into the known intermediate
所述的简明结构的反式-融合hemibrevetoxin B(的7/7/6/6四环醚部分1)通过会聚策略基于酰基阴离子等价物的偶联反应,α的还原性环化,ε-dihydroxyketone实现,并且通过Nicolaou方法在中心环连接处引入甲基。将得到的四环醚转化为已知的中间体,该中间体已经被山本基团转化为1,从而完成了1的正式全合成。