作者:Misbah Irshad、Muhammad Athar Abbasi、Aziz-Ur-Rehman、Shahid Rasool、Sabahat Zahra Siddiqui、Irshad Ahmad、Muhammad Ashraf、Muhammad Arif Lodhi、Syed Babar Jamal
DOI:10.14233/ajchem.2014.16109
日期:——
The compounds bearing sulfamoyl and acetamoyl groups have been found to show various biological activities. In the present research work, a series of O- and N-substituted derivatives were synthesized, starting with planetol (1). First N-methyl-4-hydroxyanilinium sulfate (1; planetol or metol) was treated with different aryl sulfonyl chlorides (2a-i) using aq. sodium carbonate solution as reaction medium to yield N-substituted derivatives 3a-i. The electrophile, N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-bromoacetamide (5) was prepared by the reaction of 2,3-dihydro-1,4-benzodioxin-6-amine (4) and 2-bromoacetylbromide in a weak basic aqueous medium. The target O-substituted molecules 6a-i, were synthesized by gearing up the electrophile 5, with the molecules 3a-i, in a polar aprotic solvent using LiH as an activator. The proposed structures of all the synthesized molecules were corroborated by IR, 1H NMR and EIMS spectral data. The in vitro enzyme inhibition and antibacterial studies rendered the synthesized molecules as better cholinesterase inhibitors and moderately better antibacterial agents. To explore the binding modes of the synthesized compounds, all of them were computationally docked against the active sites of acetyl cholinesterase (AChE), butyryl cholinesterase (BChE) and lipoxygenase (LOX). The compounds showed significant interactions and good correlation with the experimental data.
具有磺酰胺基和乙酰胺基的化合物已被发现具有多种生物活性。在本研究工作中,以普兰诺尔(1)为起始物,合成了一系列O-和N-取代衍生物。首先,N-甲基-4-羟基苯胺硫酸盐(1;普兰诺尔或甲硫醇)在碳酸钠水溶液中与不同的芳基磺酰氯(2a-i)反应,生成N-取代衍生物3a-i。通过2,3-二氢-1,4-苯并二噁英-6-胺(4)与2-溴乙酰溴在弱碱性水溶液中的反应,合成了亲电试剂N-(2,3-二氢-1,4-苯并二噁英-6-基)-2-溴乙酰胺(5)。通过亲电试剂5与分子3a-i在极性非质子溶剂中以LiH为活化剂反应合成了目标O-取代分子6a-i。所有合成化合物的结构均通过IR、1H NMR和EIMS光谱数据得到验证。体外酶抑制和抗菌研究表明,合成化合物具有较好的胆碱酯酶抑制作用和中等抗菌活性。为了探索合成化合物的结合模式,所有化合物均在计算上与乙酰胆碱酯酶(AChE)、丁酰胆碱酯酶(BChE)和脂氧合酶(LOX)的活性位点对接。化合物显示出显著的相互作用,并与实验数据呈现良好相关性。