Practical and efficient synthesis of pyrano[3,2-c]pyridone, pyrano[4,3-b]pyran and their hybrids with nucleoside as potential antiviral and antileishmanial agents
作者:Xuesen Fan、Dong Feng、Yingying Qu、Xinying Zhang、Jianji Wang、Philippe M. Loiseau、Graciela Andrei、Robert Snoeck、Erik De Clercq
DOI:10.1016/j.bmcl.2009.12.102
日期:2010.2
A highly practical and efficient preparation of pyrano[3,2-c]pyridone and pyrano[4,3-b]pyran derivatives was developed via an ionic liquid mediated and promoted multi-component reaction of aldehyde (1), 4-hydroxy-pyridin-2(1H)-one or 4-hydroxy-2-pyranone (2), and malononitrile (3). As an application, a series of pyrimidine nucleoside-pyrano[3,2-c]pyridone or pyrano[4,3-b]pyran hybrids were efficiently
通过离子液体介导和促进的醛(1),4-羟基-吡咯烷酮的多组分反应,开发了一种高度实用和有效的吡喃并[3,2- c ]吡啶酮和吡喃并[4,3- b ]吡喃衍生物的制备方法吡啶-2(1 H)-1或4-羟基-2-吡喃酮(2)和丙二腈(3)。作为应用,有效地获得了一系列嘧啶核苷-吡喃并[3,2- c ]吡啶酮或吡喃并[4,3- b ]吡喃杂化物。这些杂合化合物被评估为潜在的抗病毒药和抗疟药,并显示出令人鼓舞的生物学活性。
Synthesis, characterization, and application of Cu<sub>2</sub>O and NiO nanoparticles supported on natural nanozeolite clinoptilolite as a heterogeneous catalyst for the synthesis of pyrano[3,2-b]pyrans and pyrano[3,2-c]pyridones
作者:Seyed Meysam Baghbanian
DOI:10.1039/c4ra10537k
日期:——
In this research, Cu2O and NiO nanoparticles supported on natural nanozeolite clinoptilolite (CP) was found to be a recoverable catalyst system for synthesis of pyrano-[3,2-c]pyridone and pyrano[3,2-b]pyran derivatives in aqueous media. The nanocatalysts were characterized by various techniques such as XRD, BET, SEM, TEM, TEM-EDS, and XPS analyses. TEM study reveals that the Cu2O and NiO nanoparticles
在这项研究中,发现负载在天然纳米沸石斜发沸石(CP)上的Cu 2 O和NiO纳米颗粒是可合成吡喃并[3,2- c ]吡啶酮和吡喃并[3,2- b ]吡喃衍生物的催化剂体系。在水性介质中。纳米催化剂通过各种技术进行表征,例如XRD,BET,SEM,TEM,TEM-EDS和XPS分析。TEM研究表明,Cu 2 O和NiO纳米颗粒的粒径小于10 nm。XRD和XPS表征表明存在Cu 2形式天然纳米沸石CP表面的O或NiO。催化剂的容易回收和产物的高产率使该方案具有吸引力和经济性。此外,纳米催化剂可以循环使用几次,而不会显着降低其催化活性。