Flavonoids as vasorelaxant agents: Synthesis, biological evaluation and quantitative structure activities relationship (QSAR) studies

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Abstract

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 (EC 50 = 7.6 μM, E max = 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 (R train2 = 0.839, Q loo2 = 0.733 and R test2 = 0.804). The results provide good insights into the structureactivity relationships of the target compounds.

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Dong, X., Wang, Y., Liu, T., Wu, P., Gao, J., Xu, J., … Hu, Y. (2011). Flavonoids as vasorelaxant agents: Synthesis, biological evaluation and quantitative structure activities relationship (QSAR) studies. Molecules, 16(10), 8257–8272. https://doi.org/10.3390/molecules16108257

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