A series of 4-methyl-5-(3-phenylacryloyl)thiazoles based on chalcones were designed, synthesized and evaluated for their influenza neuraminidase (NA) inhibitory activity in vitro. A preliminary structure–activity relationship (SAR) analysis showed that thiazoles bearing amide had greater potency. It also showed that mono-hydroxyl group at 4-position on phenyl ring was more effective than other electron-releasing groups or electron-withdraw groups. Compounds A2 and A26 were more potent against NA with IC50 values of 8.2 ± 0.5 μg/mL and 6.2 ± 1.4 μg/mL, respectively. Molecular docking study demonstrated that thiazoles skeleton was benefit for the NA inhibitory activity.
研究人员设计、合成了一系列基于
查耳酮的 4-甲基-5-(3-苯基
丙烯酰基)
噻唑,并在体外评估了它们对流感
神经氨酸酶(NA)的抑制活性。初步的结构-活性关系(
SAR)分析表明,含酰胺的
噻唑类化合物具有更强的效力。分析还表明,苯环 4 位上的单羟基比其他释放电子的基团或撤回电子的基团更有效。化合物 A2 和 A26 对 NA 更有效,IC50 值分别为 8.2 ± 0.5 μg/mL 和 6.2 ± 1.4 μg/mL。分子对接研究表明,
噻唑骨架有利于NA的抑制活性。