Reductive Condensation between β-Keto Esters and Aldehydes: Preparation of Novel Carbon-Linked Dihydropyrone Inhibitors of Hepatitis C Virus Polymerase
作者:Maria Linton、Javier Gonzalez、Hui Li、John Tatlock、Tanya Jewell、Sarah Johnson、Matt Drowns、Leena Patel、Julie Blazel、Martha Ornelas
DOI:10.1055/s-0030-1258276
日期:2010.12
The route for the preparation of carbon-linked pyrone libraries involving an optimized one-step reductive condensation between active methylene compounds and aldehydes is described. The initial synthesis of these analogues utilizing conventional alkylation methods proved to be unsuitable for singleton or library application. The chemistry was not only low-yielding but presented serious purification
描述了制备碳连接的吡喃酮库的方法,该方法涉及活性亚甲基化合物和醛之间的优化的一步还原缩合反应。使用常规烷基化方法对这些类似物进行初始合成证明不适合单例或文库应用。化学不仅产量低,而且提出了严重的纯化挑战。本文报道的最优化路线利用路易斯碱-硼烷络合物,该碱首先在原位充当缩合催化剂,然后作为温和的还原剂在单锅反应中干净地产生所需产物。 Knoevenagel缩合-CC键形成-HCV聚合酶抑制剂-二氢吡喃酮-胺-硼烷试剂