Atroposelective Total Synthesis of (+)‐Isokotanin A via Combined Metal and Enzyme Catalysis
作者:Ruth Christine Ganardi、Julian Greb、Birgit Henßen、Jörg Pietruszka
DOI:10.1002/adsc.202300698
日期:2023.10.24
In this report a new atroposelective total synthesis of (+)-isokotanin A is described. The combination of metal- and enzyme catalysis facilitates a scalable route towards the key axially chiral 2,2′-biphenol building block. We established a one-pot Miyaura-Suzuki homocoupling towards the tetra-ortho-substituted biphenol on a decagram scale, applying Buchwald's precatalyst PdG4SPhos and SPhos in low
在本报告中,描述了 (+)-isokotanin A 的新的细胞选择性全合成。金属催化和酶催化的结合促进了通往关键轴向手性 2,2'-联苯酚结构单元的可扩展路线。我们在低负载量下应用 Buchwald 的预催化剂 PdG4SPhos 和 SPhos,建立了十克规模的针对四邻位取代联苯酚的一锅Miyaura-Suzuki 自偶联反应。接下来,利用市售的假丝酵母脂肪酶催化二丙酸联苯酯的对映选择性水解,实现了酶促动力学拆分方法。对映体纯的四邻位取代联苯经过 8 个步骤转化为天然产物。