报道了一种催化方法,该方法能够有效,操作简单且环保地合成各种1,4-二氢吡啶和3,4-二氢嘧啶-2(1 H)-one,包括一些相关药物和药理活性衍生物。该策略基于使用3D打印的Al 2 O 3木桩材料,该材料经过烧结以产生具有受控孔隙率和显着催化性能的刚性结构。3D打印的Al 2 O 3催化剂在Biginelli和Hantzsch反应中显示出路易斯酸的显着功效,并且可以回收并重复使用十次而不会降低活性。卓越的E 因素,出色的可回收性和可扩展性,广泛的底物范围,短的反应时间,优异的产率,无溶剂条件和易于分离的程序是该方法的关键特征。
We describe the discovery and optimization of 3,4-dihydropyrimidin-2(1H)-ones as a novel family of (nonzanthine) A(2B) receptor antagonists that exhibit an unusually high selectivity profile. The Biginelli-based hit optimization process enabled a thoughtful exploration of the structure-activity and structure-selectivity relationships for this chemotype, enabling the identification of ligands that combine structural simplicity with excellent hA(2B) AdoR affinity and remarkable selectivity profiles.
3,4-Dihydropyrimidin-2(1<i>H</i>)-ones as Antagonists of the Human A<sub>2B</sub> Adenosine Receptor: Optimization, Structure–Activity Relationship Studies, and Enantiospecific Recognition
作者:María Majellaro、Willem Jespers、Abel Crespo、María J. Núñez、Silvia Novio、Jhonny Azuaje、Rubén Prieto-Díaz、Claudia Gioé、Belma Alispahic、José Brea、María I. Loza、Manuel Freire-Garabal、Carlota Garcia-Santiago、Carlos Rodríguez-García、Xerardo García-Mera、Olga Caamaño、Christian Fernandez-Masaguer、Javier F. Sardina、Angela Stefanachi、Abdelaziz El Maatougui、Ana Mallo-Abreu、Johan Åqvist、Hugo Gutiérrez-de-Terán、Eddy Sotelo