Novel 1,2,4-triazole analogues as mushroom tyrosinase inhibitors: synthesis, kinetic mechanism, cytotoxicity and computational studies
作者:Balasaheb D. Vanjare、Prasad G. Mahajan、Nilam C. Dige、Hussain Raza、Mubashir Hassan、Yohan Han、Song Ja Kim、Sung-Yum Seo、Ki Hwan Lee
DOI:10.1007/s11030-020-10102-5
日期:2021.11
We have created a novel series of mushroom tyrosinase inhibitors with 1,2,4-triazole as fundamental skeleton. The target compound 1,2,4-triazol-3-ylthio)-N-phenyl acetamide derivatives 9(a–l) were synthesized by the reaction of 4- and 5-substituted 1,2,4-triazole-3-thiol derivatives 6(a–c) with 2-chloro-N-sub/un-substituted phenyl acetamide derivatives 8(a–d) under basic condition. By using the analytical techniques for instance, FTIR, LC–MS, 1H NMR and 13C NMR, the structural verification was evaluated. The novel series of the target compounds 9(a–l) has been scanned for biological activity (mushroom tyrosinase inhibition potential) which demonstrates adequate results. Interestingly, compound 9k (IC50 = 0.0048 ± 0.0016 µM) exhibits 3500 times more activity compared with standard drug kojic acid (IC50 = 16.8320 ± 1.1600 µM) against mushroom tyrosinase inhibitor. Furthermore, the cytotoxicity experiment was carried out for the highly effective target compounds (9d, 9i, 9j and 9k) by using MTT assay method for A375 human melanoma cells to define the nontoxic performance of the most effective compounds ranging from 1 to 25 µM. Furthermore, the molecular docking study delivers the thought concerning the interface of the ligand with an enzyme. Also, the dynamic simulation was accomplished for compound 9k to govern the plausible binding model.
我们创建了一系列以1,2,4-三唑为基础骨架的新型蘑菇酪氨酸酶抑制剂。目标化合物1,2,4-三唑-3-硫基-N-苯乙酰胺衍生物9(a–l)是通过4-和5-取代的1,2,4-三唑-3-硫醇衍生物6(a–c)与2-氯-N-取代/未取代的苯乙酰胺衍生物8(a–d)在碱性条件下反应合成的。利用FTIR、LC-MS、^1H NMR和^13C NMR等分析技术对结构进行了验证。目标化合物9(a–l)的新系列已被筛选出生物活性(蘑菇酪氨酸酶抑制潜力),结果令人满意。有趣的是,化合物9k(IC50 = 0.0048 ± 0.0016 µM)展示了比标准药物曲酸(IC50 = 16.8320 ± 1.1600 µM)高出3500倍的活性,对蘑菇酪氨酸酶的抑制效果。此外,我们使用MTT法对高效目标化合物(9d、9i、9j和9k)进行了细胞毒性实验,以确定这些最有效化合物在1至25 µM范围内的无毒表现。此外,分子对接研究提供了关于配体与酶界面相互作用的见解。同时,还对化合物9k进行了动态模拟,以确认合理的结合模型。