Stereoselective 6-exo Radical Cyclization Using <i>cis</i>-Vinyl Sulfoxide: Practical Total Synthesis of CTX3C
作者:Shuji Yamashita、Yuuki Ishihara、Hiroyuki Morita、Junichi Uchiyama、Katsutoshi Takeuchi、Masayuki Inoue、Masahiro Hirama
DOI:10.1021/np100729d
日期:2011.3.25
Ciguatoxins, the principal causative toxins of ciguatera seafood poisoning, are large ladder-like polycyclic ethers. We report a highly stereoselective 6-exo radical cyclization/ring-closing olefin metathesis sequence to construct the syn/trans-fused polyether system. The new method was applied to the practical synthesis of ciguatoxin CTX3C.
Ciguatoxins是Ciguatera海鲜中毒的主要致病性毒素,是大的梯状多环醚。我们报道了高度立体选择性的6-exo自由基环化/闭环烯烃复分解序列,以构建顺式/反式-融合的聚醚系统。该新方法被应用于实际合成雪卡毒素CTX3C。