Design, synthesis, characterization, and docking studies of hiherto unkown chlorinated thiazolidine, thiophene, and 2-iminochromene derivatives as protein-like protease inhibitors

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-07-11 DOI:10.1007/s13738-024-03056-0
Mohamed A. M. Abdel Reheim, Gameel A. M. Elhagali, Khadija E. Saadon, Nadia M. H. Taha, N. A. Mahmoud, Mohamed. S. A. El-Gaby
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Abstract

The present work details the synthesis of several intriguing nitrogenous heterocycles utilizing a cyano-N-aryl-acetamide-reagent, notably chlorinated thiazolidine, thiophene and 2-iminochromene derivatives. Thus, the precursor 2-cyano-N-(2,4-dichlorophenyl) acetamide 1 underwent the reaction with phenyl isothiocyanate in DMF/KOH to afford the intermediate salt 3, which reacted in situ with several α-halogenated reagents 4a-c like ethylchloroacetate,α-bromoethylpropionate and α-bromo ethyl butaneoate and afforded the corresponding 4-thiazolidinnone derivatives (6a–c, yield%; 67–85), thiophene derivatives (11;yield 80%) and (15, yield 77%) obtained from the reaction of 3 with α- chloroacetyl acetone 9 and ethyl 2-chloro-3-oxobutanoate 12.Novel series of different 4-thiazolidinones(16a–e; yield%; 65–84) were obtained via condensation of 6a with different aldehydes. Finally, the reaction of compound with different bifunctional reagents, such as salicylaldehyde derivatives and 2-hydroxynaphthaldehyde, in ethanol furnished the iminochromenes (17a,b; yield %77,80) and (18; yield 85%). In addition, molecular docking studies of the prepared molecules were carried out against papain-like protease (PLpro) to identify novel promising inhibitors of Coronavirus Disease COVID-19. The binding affinity of the best docked compounds 16c and 16a toward the target enzyme was − 9.6 and − 8.9 kcal/mole, respectively. In silico-docking-Studies indicate, that compounds 16c and 16a have the potential as antiviral against COVID-19.

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作为类蛋白酶抑制剂的未知氯化噻唑烷、噻吩和 2-亚氨基苯并吡喃衍生物的设计、合成、表征和对接研究
本研究详细介绍了利用氰基-N-芳基乙酰胺试剂合成的几种有趣的含氮杂环,特别是氯化噻唑烷、噻吩和 2-亚氨基苯并吡喃衍生物。因此,前体 2-氰基-N-(2,4-二氯苯基)乙酰胺 1 在 DMF/KOH 中与异硫氰酸苯酯反应生成中间盐 3,中间盐 3 与几种 α 卤化试剂 4a-c 如氯乙酸乙酯、α-溴乙基丙酸酯和α-溴乙基丁酸酯发生原位反应,生成相应的 4-噻唑烷酮衍生物(6a-c,产率%;67-85) 、噻吩衍生物 (11; 收率 80%) 和 (15, 收率 77%) 由 3 与 α-氯乙酰丙酮 9 和 2-氯-3-氧代丁酸乙酯 12 反应得到。通过 6a 与不同的醛缩合,得到了一系列不同的新型 4-噻唑烷酮(16a-e;收率%;65-84)。最后,化合物 1 与不同的双官能试剂(如水杨醛衍生物和 2-羟基萘甲醛)在乙醇中反应生成了亚氨基苯并吡喃(17a,b;收率 %77,80)和(18;收率 85%)。此外,还对所制备的分子进行了与木瓜蛋白酶(PLpro)的分子对接研究,以确定有希望的新型冠状病毒病 COVID-19 抑制剂。最佳对接化合物 16c 和 16a 与目标酶的结合亲和力分别为 - 9.6 和 - 8.9 千卡/摩尔。硅学对接研究表明,化合物 16c 和 16a 具有抗 COVID-19 病毒的潜力。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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