Flavonoids as Vasorelaxant Agents: Synthesis, Biological Evaluation and Quantitative Structure Activities Relationship (QSAR) Studies
作者:Xiaowu Dong、Yanming Wang、Tao Liu、Peng Wu、Jiadi Gao、Jianchao Xu、Bo Yang、Yongzhou Hu
DOI:10.3390/molecules16108257
日期:——
A series of 2-(2-diethylamino)-ethoxychalcone and 6-prenyl(or its isomers)-flavanones 10a,b and 11a–g were synthesized and evaluated for their vasorelaxant activities against rat aorta rings pretreated with 1 μM phenylephrine (PE). Several compounds showed potent vasorelaxant activities. Compound 10a (EC50 = 7.6 μM, Emax = 93.1%), the most potent one, would be a promising structural template for development of novel and more efficient vasodilators. Further, 2D-QSAR analysis of compounds 10a,b and 11c-e as well as thirty previously synthesized flavonoids 1-3 and 12-38 using Enhanced Replacement Method-Multiple Linear Regression (ERM-MLR) was further performed based on an optimal set of molecular descriptors (H5m, SIC2, DISPe, Mor03u and L3m), leading to a reliable model with good predictive ability (Rtrain2 = 0.839, Qloo2 = 0.733 and Rtest2 = 0.804). The results provide good insights into the structure- activity relationships of the target compounds.
一系列2-(2-二乙基氨基)-乙氧基查尔酮和6-异戊烯基(或其异构体)-黄烷酮10a、b和11a-g被合成并评估了其对预处理有1μM苯肾上腺素(PE)的大鼠主动脉环的血管舒张活性。几个化合物显示出强效的血管舒张活性。化合物10a(EC50=7.6μM,Emax=93.1%),是最强效的,将成为开发新型更有效的血管扩张剂的有前景的结构模板。此外,基于一组最优分子描述符(H5m、SIC2、DISPe、Mor03u和L3m),对化合物10a、b和11c-e以及之前合成的三十个黄酮类化合物1-3和12-38使用增强替换方法-多元线性回归(ERM-MLR)进行了二维定量构效关系分析,得到了一个具有良好预测能力的可靠模型(Rtrain2=0.839,Qloo2=0.733和Rtest2=0.804)。结果为目标化合物的结构-活性关系提供了良好的见解。