A new approach to (±)-heritonin. The preparation of β-tetralones from allylsilanes and acid chlorides
作者:Claudio C. Silveira、Alessandra Machado、Antonio L. Braga、Eder João Lenardão
DOI:10.1016/j.tetlet.2004.03.154
日期:2004.5
A new method for the preparation of 4-alkyl-β-tetralones is described, by reaction of arylacetic acid chlorides with allylsilanes. Employing β-tetralone 5, the synthesis of (±)-heritonine and (±)-epi-heritonine, natural piscicides isolated from Heritiera littoralis, was achieved in four steps and 22% overall yield. The key step of this synthesis involved the selenocarbenium ion-mediated elaboration
描述了一种通过芳基酰氯与烯丙基硅烷反应制备4-烷基-β-四氢萘酮的新方法。采用β四氢萘酮5,(±)-heritonine和(±)的合成-外延-heritonine,分离自天然杀鱼银叶树,在四个步骤和22%达到总产率。该合成的关键步骤涉及硒代碳鎓离子介导的天然产物丁烯内酯环的修饰。