The total synthesis of the xenicane-type marine natural product isoxeniolide A has been accomplished through a ring-opening/ring-closingmetathesis sequence and an intramolecular Nozaki–Hiyama–Kishi (NHK) reaction to forge the nine-membered ring as the key enabling steps. The NHK cyclization was highly diastereoselective and provided the oxabicyclo[7.4.0]tridecene core of isoxeniolide A as a single
Xenicane型海洋天然产物isoxeniolide A的全合成是通过开环/闭环复分解序列和分子内Nozaki-Hiyama-Kishi (NHK)反应来完成的,以形成九元环作为关键脚步。 NHK 环化具有高度非对映选择性,并提供了异辛内酯 A 的氧杂双环[7.4.0]十三碳烯核心作为单一立体异构体。