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Nano silver particles catalyzed synthesis, molecular docking and bioactivity of α-thiazolyl aminomethylene bisphosphonates
Phosphorus, Sulfur, and Silicon and the Related Elements ( IF 1.4 ) Pub Date : 2019-12-09 , DOI: 10.1080/10426507.2019.1700413
Sreelakshmi Poola 1 , Mohan Gundluru 1, 2 , Maheshwara Reddy Nadiveedhi 1 , Madhu Sudhana Saddala 3 , Prasada Rao P. T. S. R. K. 4 , Suresh Reddy Cirandur 1, 5
Affiliation  

Abstract A new series of α-thiazolyl aminomethylene bisphosphonates were synthesized by a three component reaction of 4-aryl substituted thiazol-2-amine with different dialkyl/aryl phosphites and triethyl orthoformate in the presence of Ag NPs (nano particles) as a catalyst under solvent free conditions. All the synthesized target compounds were characterized by 1H, 13C, 31P, mass and elemental analysis. The target compounds were screened for their in vitro antioxidant, antibacterial and antifungal activity. Molecular docking studies were also performed. The results revealed that among the synthesized compounds tetramethyl(((4-(4-methoxyphenyl)thiazol-2-yl)amino) methylene)bis(phosphonate) (5d), tetramethyl(((4-(4-fluorophenyl)thiazol-2-yl)amino) methylene) bis(phosphonate) (5h), and tetramethyl(((4-(4-bromophenyl)thiazol-2-yl)amino)methylene) bis (phosphonate) (5j) showed remarkably higher antioxidant activity by DPPH and H2O2 than the standard ascorbic acid. Compounds tetramethyl(((4-phenyl thiazol-2-yl)amino) methylene) bis(phosphonate) (5a), 5d, 5h and tetraethyl(((4-(4-bromophenyl)thiazol-2-yl) amino)methylene)bis (phosphonate) (5k) showed good antibacterial activity. 5a, 5d, and 5h also showed rather higher antifungal activity than the standard flucanozole. Computational docking methods have been used to predict how several aminomethylene bisphosphonate derivatives compete against the inhibitor BPH-1330 at the crystal enzyme structure of the 4H3A protein active site and how R and R1 influence their binding ability. Graphical Abstract

中文翻译:

纳米银粒子催化α-噻唑基氨基亚甲基双膦酸酯的合成、分子对接和生物活性

摘要 在 Ag NPs(纳米粒子)作为催化剂存在下,4-芳基取代的噻唑-2-胺与不同的二烷基/芳基亚磷酸酯和原甲酸三乙酯的三组分反应合成了一系列新的α-噻唑基氨基亚甲基双膦酸酯。无溶剂条件。所有合成的目标化合物均通过1H、13C、31P、质量和元素分析进行​​表征。筛选目标化合物的体外抗氧化、抗菌和抗真菌活性。还进行了分子对接研究。结果表明,在合成的化合物四甲基(((4-(4-甲氧基苯基)噻唑-2-基)氨基)亚甲基)双(膦酸酯)(5d)、四甲基(((4-(4-氟苯基)噻唑- 2-基)氨基)亚甲基)双(膦酸酯)(5h),四甲基(((4-(4-溴苯基)噻唑-2-基)氨基)亚甲基)双(膦酸酯)(5j)通过DPPH和H2O2显示出比标准抗坏血酸显着更高的抗氧化活性。化合物四甲基(((4-苯基噻唑-2-基)氨基)亚甲基)双(膦酸酯)(5a)、5d、5h和四乙基(((4-(4-溴苯基)噻唑-2-基)氨基)亚甲基)bis (phosphonate) (5k) 显示出良好的抗菌活性。5a、5d 和 5h 还显示出比标准氟康唑更高的抗真菌活性。计算对接方法已被用于预测几种氨基亚甲基双膦酸酯衍生物如何在 4H3A 蛋白活性位点的晶体酶结构上与抑制剂 BPH-1330 竞争,以及 R 和 R1 如何影响它们的结合能力。图形概要 5h和四乙基(((4-(4-溴苯基)噻唑-2-基)氨基)亚甲基)双(膦酸酯)(5k)显示出良好的抗菌活性。5a、5d 和 5h 还显示出比标准氟康唑更高的抗真菌活性。计算对接方法已被用于预测几种氨基亚甲基双膦酸酯衍生物如何在 4H3A 蛋白活性位点的晶体酶结构上与抑制剂 BPH-1330 竞争,以及 R 和 R1 如何影响它们的结合能力。图形概要 5h和四乙基(((4-(4-溴苯基)噻唑-2-基)氨基)亚甲基)双(膦酸酯)(5k)显示出良好的抗菌活性。5a、5d 和 5h 还显示出比标准氟康唑更高的抗真菌活性。计算对接方法已被用于预测几种氨基亚甲基双膦酸酯衍生物如何在 4H3A 蛋白活性位点的晶体酶结构上与抑制剂 BPH-1330 竞争,以及 R 和 R1 如何影响它们的结合能力。图形概要 计算对接方法已被用于预测几种氨基亚甲基双膦酸酯衍生物如何在 4H3A 蛋白活性位点的晶体酶结构上与抑制剂 BPH-1330 竞争,以及 R 和 R1 如何影响它们的结合能力。图形概要 计算对接方法已被用于预测几种氨基亚甲基双膦酸酯衍生物如何在 4H3A 蛋白活性位点的晶体酶结构上与抑制剂 BPH-1330 竞争,以及 R 和 R1 如何影响它们的结合能力。图形概要
更新日期:2019-12-09
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