Synthesis, in silico experiments and biological evaluation of 1,3,4-trisubstituted pyrazole derivatives as antimalarial agents
作者:Adnan A. Bekhit、Manal N. Saudi、Ahmed M.M. Hassan、Salwa M. Fahmy、Tamer M. Ibrahim、Doaa Ghareeb、Aya M. El-Seidy、Sherry N. Nasralla、Alaa El-Din A. Bekhit
DOI:10.1016/j.ejmech.2018.11.067
日期:2019.2
New 1,3,4-trisubstituted pyrazole derivatives were synthesized and evaluated for their antiplasmodial activity. Compounds 4b, 4c, 7a and 7d were the most potent antiplasmodial agents against P. berghei with percent of suppression ranging from 90 to 100%. They were also screened for their in vitro antimalarial activity against the chloroquine resistant strain P. falciparum, (RKL9). Compound 4c displayed
合成了新的1,3,4-三取代的吡唑衍生物,并对其抗血浆活性进行了评估。化合物4b,4c,7a和7d是最有效的抗伯氏疟原虫的抗疟原虫药物,其抑制百分比范围为90%至100%。还针对它们对氯喹抗性恶性疟原虫(RKL9)的体外抗疟活性进行了筛选。化合物4c表现出最高的体外抗疟活性;比标准的氯喹磷酸盐高13倍。活性最强的化合物与野生型和四重突变体pf的分子对接DHFR-TS结构合理化了体外抗疟活性。此外,这些化合物表现出合理的计算机模拟(silico)药物样和药代动力学性质。对最具活性的化合物的毒性研究表明,所有测试化合物均无毒,经口服途径耐受高达150 mg / kg,经父母途径耐受高达75 mg / kg。据RBC溶血测定中,人们发现,化合物7A是与IC的最有效的抗炎和毒性最小衍生物50值71倍更高的IC 50相关的抗疟活性值。此外,细胞毒性评估表明,化合物4c是IC 50毒性最低的衍生物该值比与抗疟活性有关的IC