Selective Formation of a Trisubstituted Alkene Motif by<i>trans</i>-Hydrostannation/Stille Coupling: Application to the Total Synthesis and Late-Stage Modification of 5,6-Dihydrocineromycin B
作者:Stephan M. Rummelt、Johannes Preindl、Heiko Sommer、Alois Fürstner
DOI:10.1002/anie.201501608
日期:2015.5.18
Countless natural products of polyketide origin have an E‐configured 2‐methyl‐but‐2‐en‐1‐ol substructure. An unconventional entry into this important motif was developed as part of a concise total synthesis of 5,6‐dihydrocineromycin B. The choice of this particular target was inspired by a recent study, which suggested that the cineromycin family of antibiotics might have overlooked lead qualities
无数源自聚酮化合物的天然产物具有E配置的2-甲基-2-1-en-1ol亚结构。5,6-二氢cineromycin B的简明全合成的一部分,开发出了一种非常规的进入此重要基序的方法。这一特定靶点的选择受到最近一项研究的启发,该研究表明,cineromycin家族的抗生素可能忽略了先导质量,尽管我们的生物数据不一定支持这种观点。这种新方法包括一系列炔烃复分解反应,然后进行羟基定向的反式氢锡烷基化反应和前所未有的甲基-斯蒂尔偶联反应。考虑到经典的闭环复分解反应的结果相当差,因此获得目标物的特征性三取代烯烃位点的优异收率和出色的选择性是值得注意的。