[EN] METHOD FOR SYNTHESIZING DIVERSELY SUBSTITUTED PURINES<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE PURINES À SUBSTITUTIONS DIVERSES
申请人:UNIV GRENOBLE ALPES
公开号:WO2018203099A1
公开(公告)日:2018-11-08
The present invention relates to a method for synthesizing diversely substituted purines starting from a pyrimidine. Formula (I). The method comprises the formation of an amidine group on the pyrimidine by implementing a Vilsmeier type reagent, the functionalization of the pyrimidine with an amine and the cyclization to form the purine nucleus. Optional steps can also be performed in order to further functionalize the molecule. The invention also relates to new purines and new intermediate product.
Synthesis of C6-azolyl purine nucleosides via C–N coupling reaction of unprotected 6-chloropurine nucleosides and N-heterocycles under catalyst- and solvent-free conditions
C6-azolyl purine nucleoside products are prepared in high yields under solvent- and catalyst-free conditions via CâN coupling reaction of unprotected 6-chloropurine nucleosides and N-heterocycles, providing a unifying, simple and environmentally friendly complement to the available methods.
New chalcone derivatives: synthesis, antiviral activity and mechanism of action
作者:Yun Fu、Dan Liu、Huanan Zeng、Xiaoli Ren、Baoan Song、Deyu Hu、Xiuhai Gan
DOI:10.1039/d0ra03684f
日期:——
In this work, twenty-eight chalcone derivatives containing a purine (sulfur) ether moiety were synthesized and their antiviral activities were evaluated. Biological results showed that compound 5d exhibited outstanding inactive activity against tobacco mosaic virus (TMV) in vivo (EC50 = 65.8 μg mL−1), which is significantly superior to that of ribavirin (EC50 = 154.3 μg mL−1). Transmission electron
在这项工作中,合成了 28 种含有嘌呤(硫)醚部分的查尔酮衍生物,并评估了它们的抗病毒活性。生物学结果表明,化合物5d在体内(EC 50 = 65.8 μg mL -1 )表现出显着的抗烟草花叶病毒(TMV)的无活性活性,显着优于利巴韦林(EC 50 = 154.3 μg mL -1)。透射电子显微镜表明化合物5d可以破坏TMV颗粒的完整性。微尺度热泳、荧光滴定和分子对接结果表明,化合物5d具有更强的结合亲和力(Ka = 1.02 ×10 5 L mol -1 , K d = 13.4 μmol L -1 )与TMV外壳蛋白(TMV-CP),这是由于化合物5d与氨基酸残基之间形成五个氢键TMV-CP 的。这些发现表明化合物5d可以有效抑制TMV的感染能力。该工作为新型抗病毒药物的发现提供了启示和参考。
New substituted 9-propyladenine derivatives as A<sub>2A</sub>adenosine receptor antagonists
An efficient one‐pot method for the synthesis of various C6‐alkylthio‐substituted purine nucleosides has been developed under microwave irradiation with good to excellent yields without any metal catalyst (see scheme). This process expands the scope of existing synthetic methodologies and was further successfully applied for synthesis of the biologically important compound 4‐nitrobenzylthioinosine