Synthesis of (±)-Nephromopsinic, (−)-Phaseolinic, and (−)-Dihydropertusaric Acids
作者:Andrea Brecht-Forster、Juliette Fitremann、Philippe Renaud
DOI:10.1002/1522-2675(200211)85:11<3965::aid-hlca3965>3.0.co;2-2
日期:2002.11
The formal syntheses of (±)-nephromopsinic acid, (−)-phaseolinic acid, and the first total synthesis of (−)-dihydropertusaric acid from (±)- and (−)-7-oxabicyclo[2.2.1]hept-5-en-2-one are described. These syntheses take advantage of a previously reported radical rearrangement (1,2-acyl migration). A remarkable iodide-mediated cleavage of a bicyclic system, followed by the introduction of the γ-chains
(±)-nephromopsinic acid、(-)-phaseolinic acid 的正式合成,以及 (-)-dihydropertusaric acid 从 (±)- 和 (-)-7-oxabicyclo[2.2.1]hept- 的首次全合成描述了 5-en-2-one。这些合成利用了先前报道的自由基重排(1,2-酰基迁移)。显着的碘化物介导的双环系统裂解,然后通过混合 Kolbe 电解引入 γ 链,是这些合成的关键步骤。这种方法是通用的,可用于制备各种对康酸,具有良好的立体化学控制。