to their synthesis is therefore important. We have achieved the first totalsynthesis of squafosacin F and assigned its absoluteconfiguration. The key steps were an acid-mediated tandem intramolecular double cyclization to build the hydroxy-flanked mono-tetrahydrofuran core and decoration with the desired functionalities of the target natural product via highly stereoselective reactions.
番荔枝素具有广泛的潜在生物活性。因此,开发简单且面向多样性的合成方法非常重要。我们已经实现了 squafosacin F 的首次全合成并确定了它的绝对构型。关键步骤是酸介导的串联分子内双环化,以构建羟基侧翼的单四氢呋喃核心,并通过高度立体选择性反应以目标天然产物的所需功能进行装饰。
Oxidative Cyclization of Diols Derived from 1,5-Dienes: Formation of Enantiopurecis-Tetrahydrofurans by Using Catalytic Osmium Tetroxide; Formal Synthesis of (+)-cis-Solamin
作者:Timothy J. Donohoe、Sam Butterworth
DOI:10.1002/anie.200500513
日期:2005.7.25
Synthesis of <i>cis-</i>Solamin Using a Permanganate-Mediated Oxidative Cyclization
作者:Alexander R. L. Cecil、Richard C. D. Brown
DOI:10.1021/ol026669n
日期:2002.10.1
[GRAPHICS]cis-Solamin (1) and its diastereoisomer 14 have been synthesized in 13 steps using the diastereoselective permanganate-promoted oxidative cyclization of 1,5-dienes to create the tetrahydrofuran diol core. Notably, no protecting groups are required during the stages of fragment assembly.