Studies toward the Enantioselective Syntheses of Oxylipins: Total Synthesis and Structure Revision of Solandelactone E
作者:Jennifer E. Davoren、Christian Harcken、Stephen F. Martin
DOI:10.1021/jo701739v
日期:2008.1.1
An efficient and general entry to unsaturated cyclopropane- and lactone-containing oxylipins of marine origin has been designed and applied to the first enantioselective total synthesis of solandelactone E. The synthesis, which proceeds in a total of 23 steps from commercially available materials, features a diastereoselective acetal-directed cyclopropanation of an electron-deficient diene, a regioselective
已经设计了有效且通用的海洋来源的不饱和含环丙烷和内酯的脂环氧化物的方法,并将其应用于索兰内酯E的第一个对映选择性全合成。该合成过程由市售材料进行,共进行23个步骤,具有以下特点:缺电子二烯的非对映选择性乙缩醛定向环丙烷化,区域选择性的Sharpless对映选择性二羟基化和亚硒酸酯的立体选择性[2,3]-σ重排,以实现烯丙醇的1,3-转移。如此制备的合成索兰内酯的光谱数据与文献数据的比较导致对C(11)-表异构索兰内酯的原始结构分配进行了修订。