Convenient two-step synthesis of highly functionalized benzo-fused 1,4-diazepin-3-ones and 1,5-diazocin-4-ones by sequential Ugi and intramolecular S N Ar reactions
作者:Simon Vézina-Dawod、Nicolas Gerber、Xinxia Liang、Eric Biron
DOI:10.1016/j.tet.2017.09.028
日期:2017.11
pharmacological properties and peptidomimetic abilities. We report herein a rapid and efficient two-step synthesis of polysubstituted 1,4-benzodiazepin-3-ones and 1,5-benzodiazocin-4-ones using a multicomponent condensation/cyclization strategy. The approach uses an Ugi four-component reaction to condense readily available Nα-Fmoc-amino acids, amines and isocyanides with a 2-fluorobenzaldehyde derivative
苯并二氮杂pin酮是重要的杂环族,具有非常诱人的药理特性和拟肽能力。我们在此报告了一种使用多组分缩合/环化策略快速有效地两步合成多取代的1,4-苯并二氮杂-3-酮和1,5-苯并二氮杂-4-酮的方法。该方法使用的Ugi四组分反应以冷凝容易获得Ñ α-带有2-氟苯甲醛衍生物的-Fmoc-氨基酸,胺和异氰酸酯,然后一锅去除Fmoc-基团,分子内芳族亲核取代基用于闭环和侧链脱保护。所描述的方法可接近带有多种官能化取代基的苯并稠合的7和8元环,并用于有效制备三和四取代的1,4-苯并二氮杂-3-酮和1,5-苯并重氮-4 -通过两个简单的步骤即可获得高产量。