Synthesis and Antibacterial Activity of Analogs of 5-Arylidene-3-(4-methylcoumarin-7-yloxyacetylamino)-2-thioxo-1,3-thiazoli-din-4-one
作者:Nguyen Cong、Huynh Nhan、Luong Van Hung、Tran Thang、Ping-Chung Kuo
DOI:10.3390/molecules190913577
日期:——
In an effort to develop new antimicrobial agents, 3-(4-methylcoumarin-7-yloxyacetylamino)-2-thioxo-1,3-thiazolidin-4-one (4) was synthesized by reaction of thiocarbonylbisthioglycolic acid with ethyl (4-methyl-2-oxo-2H-chromen-7-yloxy)aceto- hydrazide (3), which was prepared in turn from 7-hydroxy-4-methylcoumarin (1). The condensation of compound 4 with different aromatic aldehydes afforded a series of 5-(arylidene)-3-(4-methylcoumarin-7-yloxyacetyl-amino)-2-thioxo-1,3-thiozolidin-4-one analogs 5a–h. The structures of these synthetic compounds were elucidated on the basis of IR, 1H-NMR and 13C-NMR spectral data and ESI-MS spectrometric analysis. Compounds 5a–h were examined for their antibacterial activity against several strains of Gram-positive and Gram-negative bacteria.
为了开发新的抗菌剂,我们通过硫代羰基双硫代乙醇酸与乙基(4-甲基-2-氧代-2H-色烯-7-氧基)乙酰酰肼(3)反应合成了 3-(4-甲基香豆素-7-氧基乙酰氨基)-2-硫酮-1,3-噻唑烷-4-酮(4),后者又是由 7-羟基-4-甲基香豆素(1)制备的。 将化合物 4 与不同的芳香醛缩合,可得到一系列 5-(亚芳基)-3-(4-甲基香豆素-7-氧基乙酰氨基)-2-硫酮-1,3-硫唑烷-4-酮类似物 5a-h。根据红外光谱、1H-NMR 和 13C-NMR 光谱数据以及 ESI-MS 光谱分析,阐明了这些合成化合物的结构。研究人员检测了 5a-h 化合物对几种革兰氏阳性和革兰氏阴性细菌的抗菌活性。