Conjugation of N -acylhydrazone and 1,2,4-oxadiazole leads to the identification of active antimalarial agents
作者:José Maurício dos Santos Filho、Diogo Manoel Alves de Queiroz e Silva、Taís Soares Macedo、Helena Mariana Pitangueira Teixeira、Diogo Rodrigo Magalhaes Moreira、Soura Challal、Jean-Luc Wolfender、Emerson Ferreira Queiroz、Milena Botelho Pereira Soares
DOI:10.1016/j.bmc.2016.09.013
日期:2016.11
for antimalarial agents is necessary. Here, we report the structural design, synthesis and antiparasitic evaluation of two novel series of 1,2,4-oxadiazoles in conjugation to N-acylhydrazones, both groups recognized as privileged structures, as well as the studies on the antimalarial activity of 16 previous described analogues. By varying substituents attached to the phenyl ring, it was possible to
由几种疟原虫引起的疟疾是全球范围内威胁生命的主要寄生虫感染。由于寄生虫对喹啉类药物有抗药性,因此有必要寻找抗疟药。在这里,我们报告两个新的1,2,4-恶二唑系列与N-酰基azo偶合物的结构设计,合成和抗寄生虫评价,两个组均被认为是特权结构,以及对16个抗疟活性的研究。描述的类似物。与未取代的衍生物相比,通过改变连接在苯环上的取代基,可以保留,增强或增加抗寄生虫活性。N中连接的二茂铁基和肉桂基部分取代取代的芳基环-酰基hydr消除了抗寄生虫反应,证明了与活性有关的结构特征。活性化合物显示出与甲氟喹相似的体外效价,但并非全部抑制β-血红素的形成。此外,活性化合物在HepG2细胞中显示出低细胞毒性,并且在未感染的红细胞中不会引起溶血。与氯喹相比,在伯氏疟原虫感染的小鼠中,该化合物减少了寄生虫血症,但在增加小鼠存活率方面显示出有限的功效,这表明仍需要药理学方面的改进。