Synthesis and comparing the antibacterial activities of pyrimidine derivatives
作者:B ANDREWS、K KOMATHI、S MOHAN
DOI:10.1007/s12039-017-1228-z
日期:2017.3
series of 10 derivatives of 5-(5-amino-1,3,4-thiadiazole-2-yl)-3,4-dihydro-6-methyl-4-phenyl-pyrimidin-2(1H)-one and 10 derivatives of 3,4-dihydro-5-(5-mercapto-4H-1,2,4-triazol-3-yl)-6-methyl-4-phenyl pyrimidin-2(1H)-one have been synthesized. Among the synthesized derivatives, triazole substituted compounds have shown higher antibacterial inhibition when compared to the thiadiazole derivatives. All the
5-(5-氨基-1,3,4-噻二唑-2-基)-3,4-二氢-6-甲基-4-苯基-嘧啶-2(1 H)-的10种衍生物已合成10,3,4-二氢-5-(5-巯基-4H-1,2,4-三唑-3-基)-6-甲基-4-苯基嘧啶-2(1 H)-的衍生物。在合成的衍生物中,与噻二唑衍生物相比,三唑取代的化合物显示出更高的抗菌抑制作用。通过IR,1 H和13 C NMR,GC-MS和CHN分析表征了新合成化合物的所有结构。与标准药物环丙沙星相比,大多数化合物已显示出令人鼓舞的抗菌活性。 5-(5-氨基-1,3,4-噻二唑-2-基)-3,4-二氢-6-甲基-4-苯基嘧啶-2(1 H)-的十个衍生物系列和十个衍生物3,4-二氢-5-(5-巯基-4H-1,2,4-三唑-3-基)-6-甲基-4-苯基嘧啶-2(1 H)-的合成及结构表征。在合成的衍生物中,与噻二唑衍生物相比,三唑取代的化合物显示出更高的抗菌抑制作用。
A New Biginelli Reaction Procedure Using Potassium Hydrogen Sulfate as the Promoter for an Efficient Synthesis of 3,4-Dihydropyrimidin-2(1<i>H</i>)-one
conditions have been found to carry out the Biginellireaction for the synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives. This synthesis was performed usingpotassiumhydrogensulfate as the promoter in glycol solution. Compared with the classical Biginellireaction conditions, this new method has the advantage of excellent yields (85-99%) and short reaction time (0.5-2 h).
Organocatalytic Application of Ionic Liquids: [bmim][MeSO4] as a Recyclable Organocatalyst in the Multicomponent Reaction for the Preparation of Dihydropyrimidinones and -thiones
substitution in the latter. The ionic liquid can be recovered and reused for five consecutive reactions without significant loss of catalytic efficiency. The applicability of the methodology for large-scale reaction highlights its potential for bulk synthesis. ionic liquid - organocatalyst - multicomponent reaction - dihydropyrimidinone - dihydropyrimidinethione
BiVO4-NPs: an efficient nano-catalyst for the synthesis of biscoumarins, bis(indolyl)methanes and 3,4-dihydropyrimidin-2(1H)-ones (thiones) derivatives
作者:Farhad Shirini、Monireh Pourghasemi Lati
DOI:10.1007/s13738-016-0959-y
日期:2017.1
4-dihydropyrimidin-2(1H)-ones (thiones) derivatives. The structures of the products were characterized by IR, 1HNMR and 13C NMR spectroscopy and comparison with the authentic samples. Easy work-up procedure, excellent yields, short reaction times and reusability of the catalyst are some advantages of this work. In addition, in this article and for the first time, the preparation of 3,4-dihydropyrimidin-2(1H)-ones
BiVO 4 -NPs可用作促进双香豆素,双(吲哚基)甲烷和3,4-二氢嘧啶-2(1 H)-ones(thiones)衍生物合成的有效且可重复使用的纳米催化剂。产物的结构通过IR,1 H NMR和13 C NMR光谱表征,并与真实样品进行比较。简便的后处理程序,优异的收率,较短的反应时间和催化剂的可重复使用性是这项工作的一些优势。另外,在本文中并且首次报道了从醛的被保护的衍生物包括肟,半咔唑酮和1,1-二乙酸酯制备3,4-二氢嘧啶-2(1 H)-酮和-硫酮的报道。