A General Strategy for the Stereoselective Synthesis of the Furanosesquiterpenes Structurally Related to Pallescensins 1–2
作者:Stefano Serra
DOI:10.3390/md17040245
日期:——
Here, we describe a general stereoselective synthesis of the marine furanosesquiterpenes structurally related to pallescensins 1-2. The stereoisomeric forms of the pallescensin 1, pallescensin 2, and dihydropallescensin 2 were obtained in high chemical and isomeric purity, whereas isomicrocionin-3 was synthesized for the first time. The sesquiterpene framework was built up by means of the coupling
在这里,我们描述了与pallescensin 1-2结构相关的海洋呋喃型倍半萜的一般立体选择性合成。以高化学和异构体纯度获得了pallescensin 1,pallescensin 2和dihydropallescensin 2的立体异构体形式,而isomicrocionin-3则是首次合成。倍半萜骨架是通过C 10环香叶基部分与C 5 3-(亚甲基)呋喃部分的偶联而建立的。我们合成方法的关键步骤是立体选择合成四种环香叶醇异构体,将其转化为相应的环香叶基磺酰基苯衍生物,将其与3-(氯甲基)呋喃进行烷基化以及最后对苯磺酰基官能团进行还原性裂解以提供整个倍半萜烯骨架。