Microwave-Assisted Synthesis of Novel 2H-Chromene Derivatives Bearing Phenylthiazolidinones and Their Biological Activity Assessment
作者:Islam El Azab、Mohamed Youssef、Mahmoud Amin
DOI:10.3390/molecules191219648
日期:——
6-Hydroxy-2-oxo-2H-chromene-4-carbaldehyde (2), 6-chloro-2-oxo-2H-chromene-4-carbaldehyde (3) and 6-hydrazinyl-4-methyl-2H-chromen-2-one (5) were prepared as single-pharmacophore motif key intermediates. Compounds 2, 3 and 5 were incorporated in a series of multicomponent reactions (MCRs), under microwave assistance as well as conventional chemical synthesis processes, to afford a series of three and/or four-pharmacophoric-motif conjugates 8a,b, 11, 13, 16, 17, 19 and 20 in good yields. The newly synthesized compounds were characterized by IR, NMR, 13C-NMR, MS and elemental analyses. Finally the synthesized compounds have been screened for their biological activity whereupon they exhibited remarkable antimicrobial activity on different classes of bacteria and the fungus.
制备了 6-羟基-2-氧代-2H-苯并吡喃-4-甲醛 (2)、6-氯-2-氧代-2H-苯并吡喃-4-甲醛 (3) 和 6-肼基-4-甲基-2H-苯并吡喃-2-酮 (5),作为单药效基团关键中间体。在微波辅助和传统化学合成工艺下,将化合物 2、3 和 5 加入一系列多组分反应 (MCR),以良好的产率获得了一系列三和/或四药效基团共轭物 8a、b、11、13、16、17、19 和 20。新合成的化合物通过红外光谱、核磁共振、13C-核磁共振、质谱和元素分析进行了表征。最后,对合成的化合物进行了生物活性筛选,结果表明它们对不同种类的细菌和真菌具有显著的抗菌活性。