Synthesis of medium ring ethers. Part 2. Synthesis of the fully saturated carbon skeleton of Laurencia non-terpenoid ether metabolites containing seven-, eight- and nine-membered rings
作者:Robert W. Carling、J. Stephen Clark、Andrew B. Holmes
DOI:10.1039/p19920000083
日期:——
A general method for the construction of medium ring ethers is described in which a 2-substituted cycloalkanone was subjected to a Baeyer–Villiger ring expansion to the lactone, Tebbe methylenation of which afforded the enol ether which was subjected to a hydroboration–oxidation sequence to afford the 2,n-disubstituted oxacycle (n= ring size). Application of this procedure has led to efficient syntheses
描述了一种构建中环醚的通用方法,其中将2个取代的环烷酮进行Baeyer-Villiger环扩环成内酯,对其Tebbe进行甲基化,得到烯醇醚,对其进行氢硼化-氧化顺序为得到2,n-二取代的氧杂环(n =环大小)。该方法的应用已导致有效地合成完全饱和的骨架,该骨架对应于天然劳伦西亚代谢物,该代谢物含有2个,正二烷基取代的7个(异烟脲烷),8个(月桂聚糖和月桂聚糖)和9元(卵磷脂)醚。