Synthesis of a C(22)a˚C(34) halichondrin precursor via a double dioxanone-to-dihydropyran rearrangement
作者:Steven D. Burke、John L. Buchanan、Joshua D. Rovin
DOI:10.1016/0040-4039(91)80600-b
日期:1991.8
An enantioselective synthesis of the C(22)a˚C(34) halichondrin segment1 in nine steps from mesocyclopenten-1,4-diol (5) is described. Asymmetric bis(epoxidation) of meso bis(allylic alcohol)8 and two concurrent [3,3] sigmatropic rearrangements of bis(dioxanone)2 are featured.
描述了从中环戊烯-1,4-二醇(5)开始的九步中C(22)a˚C(34)葫芦素片段1的对映选择性合成。具有内消旋双(烯丙醇)8的不对称双(环氧化)和双(二恶烷酮)2的两个同时发生的[3,3]σ重排的特征。