Synthesis of Natural Product-like Polyheterocycles via One-Pot Cascade Oximation, C–H Activation, and Alkyne Annulation
作者:Liyao Zheng、Yunhui Bin、Yunpeng Wang、Ruimao Hua
DOI:10.1021/acs.joc.6b01460
日期:2016.10.7
chroman-4-ones to tricyclic fused pyridines with the skeleton of cassiarins, a family of alkaloids with antimalarial activity, was developed. Also, a general strategy for modular construction of polyheterocycles with diverse natural product-like skeletons was developed by using ketone–alkyne bifunctional substrates. These reactions involved a one-pot cascade oximation of ketones, rhodium-catalyzed C–H activation
开发了一种有效的方案,用于将苯并二氢吡喃-4-吡喃酮直接转化为具有卡西林素骨架的三环稠合吡啶,卡西林是具有抗疟疾活性的生物碱家族。另外,通过使用酮-炔双功能底物,开发了具有多种类似天然产物骨架的多杂环模块化构建的通用策略。这些反应涉及酮的一锅级联肟化,铑催化的CH活化以及在温和条件下具有高原子,阶梯和氧化还原经济性的分子间/分子内炔烃环化反应。