Racemic Total Synthesis of Elmonin and Pratenone A, from <i>Streptomyces</i>, Using a Common Intermediate Prepared by <i>peri</i>-Directed C–H Functionalization
作者:Michiel T. Uiterweerd、Adriaan J. Minnaard
DOI:10.1021/acs.orglett.2c03449
日期:2022.12.30
The first total synthesis of elmonin and pratenone A, two complex rearranged angucyclinones from Streptomyces, is reported. Using peri-directed C–H functionalization, the key naphthalene fragment present in both synthetic targets was efficiently prepared. Coupling to two anisole-derived fragments gave access to the natural products, in which elmonin was prepared using a biomimetic spiro-ketalization
首次全合成了 elmonin 和 pratenone A(两种来自链霉菌的复杂重排安古环酮)。使用定向C-H 官能化,可以有效地制备两个合成靶标中存在的关键萘片段。与两个苯甲醚衍生的片段偶联即可获得天然产物,其中使用仿生螺缩酮化制备了elmonin。