Iminothiazoline-Sulfonamide Hybrids as Jack Bean Urease Inhibitors; Synthesis, Kinetic Mechanism and Computational Molecular Modeling
作者:Aamer Saeed、Shams-ul Mahmood、Muhammad Rafiq、Zaman Ashraf、Farukh Jabeen、Sung-Yum Seo
DOI:10.1111/cbdd.12675
日期:2016.3
while (3i) is a competitive one. Docking studies suggested that Asp633, Ala636, His492, Ala440, Lue523, Asp494 and Arg439 are the major interacting residues in the binding site of the protein and may have an instrumental role in the inhibition of enzyme's function. 2-iminothiazoline analogues (3a-j) showed good docking score (-10.6466 to -8.7215 Kcal/mol) and binding energy (London dG ranging from -14.4825
本工作报道了几种作为豆荚脲酶抑制剂的磺酰胺(3a-j)的2-亚氨基噻唑啉衍生物的合成。在1,8-二氮杂双环[5.4.0]十一烷基-7-烯为碱的存在下,通过在干燥的乙醇中将丙烯酰胺硫脲与炔丙基溴杂环化来合成标题化合物。所有化合物均显示出比标准硫脲更高的脲酶抑制活性。化合物(3h)和(3i)表现出优异的酶抑制活性,IC 50分别为0.064和0.058μm,而硫脲的IC 50为20.9μm。通过狄克森图分析的动力学机理表明,化合物(3h)是一种混合型抑制剂,而化合物(3i)是一种竞争性抑制剂。对接研究表明,Asp633,Ala636,His492,Ala440,Lue523,Asp494和Arg439是蛋白质结合位点的主要相互作用残基,可能在抑制酶的功能中发挥重要作用。2-iminothiazoline类似物(3a-j)表现出良好的对接分数(-10.6466至-8.7215 Kcal / mol)和结合能(伦敦dG从-14