Unified Total Synthesis, Stereostructural Elucidation, and Biological Evaluation of Sarcophytonolides
作者:Hiroyoshi Takamura、Takahiro Kikuchi、Kohei Iwamoto、Eiji Nakao、Naoki Harada、Taichi Otsu、Noriyuki Endo、Yuji Fukuda、Osamu Ohno、Kiyotake Suenaga、Yue-Wei Guo、Isao Kadota
DOI:10.1021/acs.joc.8b01634
日期:2018.9.21
soft corals of genus Sarcophyton. Unified total synthesis of sarcophytonolides C, E, F, G, H, and J and isosarcophytonolide D was achieved. The synthetic routes feature NaHMDS- or SmI2-mediated fragment coupling, alkoxycarbonylallylation, macrolactonization, and transannular ring-closing metathesis. These total syntheses led to the absolute configurational confirmation of sarcophytonolide H, elucidation
石phy内酯是从石Sar属的软珊瑚中分离出来的西松醇二萜。达到了总的合成路线,即肌醇内酯C,E,F,G,H和J和异肌醇内酯D。合成途径具有NaHMDS或SmI2介导的片段偶联,烷氧基羰基化,大内酯化和环过环封闭复分解的特征。这些总的合成导致了沙糖藻内酯H的绝对构型确证,沙糖藻内酯C,E,F和G的阐明,以及沙糖藻内酯J和异沙糖藻内酯D的修订。我们还评估了合成的沙糖藻内酯H和J的防污活性和毒性,以及它们的类似物,以及合成的鼠尾草甾醇内酯和主要合成中间体的细胞毒性。