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
作者:V. I. Krutikov、A. V. Erkin、P. A. Pautov、M. M. Zolotukhina
DOI:10.1023/a:1024775501781
日期:——
A series of substituted aminomethylenebisphosphonates is prepared by reaction of dialkyl hydrogen phosphites with triethyl orthoformate and corresponding heteryl- or arylamine. The determining factor in the formation of the target products is appearance of an intermediate associate between the ortho ester and amine. The rate and selectivity of the process can be increased by using a nonpolar solvent to stabilize the transition state of the reaction. Crown ether catalysis increases the selectivity of the process by 10-20%. The synthesized aminomethylenebisphosphonates whose structure was established by NMR spectroscopy exhibit a moderate antibacterial and anticholinesterase activity.
Nano silver particles catalyzed synthesis, molecular docking and bioactivity of α-thiazolyl aminomethylene bisphosphonates
作者:Sreelakshmi Poola、Mohan Gundluru、Maheshwara Reddy Nadiveedhi、Madhu Sudhana Saddala、Prasada Rao P. T. S. R. K.、Suresh Reddy Cirandur
DOI:10.1080/10426507.2019.1700413
日期:2020.5.3
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
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