Synthesis of some novel hydrazono acyclic nucleoside analogues
作者:Mohammad N Soltani Rad、Ali Khalafi-Nezhad、Somayeh Behrouz
DOI:10.3762/bjoc.6.49
日期:——
The syntheses of novel hydrazono acyclicnucleosides similar to miconazole scaffolds are described. In this series of acyclicnucleosides, pyrimidine as well as purine and other azole derivatives replaced the imidazole function in miconazole and the ether group was replaced with a hydrazone moiety using phenylhydrazine. To interpret the dominant formation of (E)-hydrazone derivatives rather than (Z)-isomers
An efficient cobalt-catalyzed tandemone-pot method has been developed for the synthesis of polysubstituted imidazo[1,5-a]-N-heteroaromatics. The method involves Knoevenagel condensation followed by cobalt-catalyzed direct alkenylation to give the desired polysubstituted imidazo[1,5-a]pyridines and imidazo[1,5-a]isoquinolines in a one-pot manner. This method exhibits a broad substrate scope, provides
开发了一种高效的钴催化串联一锅法合成多取代的咪唑并[1,5 - a ]-N-杂芳烃。该方法涉及 Knoevenagel 缩合,然后是钴催化的直接烯基化,以一锅方式得到所需的多取代咪唑并[1,5- a ]吡啶和咪唑并[1,5 - a ]异喹啉。这种方法表现出广泛的底物范围,提供中等至良好(39-74%)的产量,并且可以放大到克级。
Structure–cytotoxicity relationship of a novel series of miconazole-like compounds
In the current study, two novel classes of the carboacyclic nucleosides having miconazole-like scaffolds as imidazole- and pyrimidine-based compounds were examined for their cytotoxic properties. The aim was to establish a relation between cytotoxic activity and nature of the synthetic compounds. While Escherichia coli (DH5 alpha) and human erythromyeloblastoid leukemia cell line (K562) were the target cells, depending on the type of substitution made, ranges of antibacterial and antineoplastic activities were observed. Also the electron-donating and electron-accepting properties of the ligands were proved to play a crucial role in their cytotoxic activities. Accordingly, the substitutions associated with the marked improvement of cytotoxic activities can be considered as the significant point in construction of new generation of either antibacterial or antineoplastic agents.