AbstractTetrahydropyran and tetrahydropyran‐fused poly‐ethers scaffolds are found in many classes of natural products and medicinally relevant small molecules. Here we describe a catalytic system for 6‐endo selective ring‐opening of epoxides by Au(I) or Au(III) catalyst that provides rapid access to various tetrahydropyran‐derived motifs. It also could efficiently construct the subunits of marine ladder‐like poly‐ethers through emulating the Nakanishi's hypothesis on the biosynthesis of these toxins. The synthetic utility of this method is also demonstrated in the preparation of the tricyclic core of tetrahydropyran‐containing macrolide natural products lituarines A−C.
摘要四氢吡喃和四氢吡喃融合聚醚支架存在于许多天然产品和药用小分子中。在此,我们介绍了一种利用金(I)或金(III)催化剂进行环氧化物 6 内向选择性开环的催化系统,该系统可快速获得各种四氢吡喃衍生基团。它还可以通过模仿中西(Nakanishi)关于这些毒素生物合成的假说,有效地构建海洋梯状聚醚的亚基。在制备含四氢吡喃的大环内酯天然产物 lituarines A-C 的三环核心时,也证明了该方法的合成实用性。