In the present study, a series of N-substituted derivative of N-(1-hydroxy-2-methylpropan-2-yl)benzenesulfonamide was synthesized. Firstly, the reaction of 2-amino-2-methyl propan-1-ol (1) with benzenesulfonyl chloride (2) yielded N-(1-hydroxy-2-methylpropan-2-yl)benzene sulfonamide (3) and secondly on treatment with different electrophiles (4a-i) in the presence of N,N-dimethyl formamide and sodium hydride which act as a base furnished into N-substituted derivatives of N-(1-hydroxy-2-methylpropan-2-yl)benzenesulfonamide (5a-i). All these derivatives along with their parent compounds were characterized by IR, EI-MS and 1H NMR spectra. These compounds were assayed for their antioxidant activities by using 2,2-diphenyl-1-picrylhydrazil (DPPH) scavenging and other biological activities via screening them against acetylcholinesterase, butyrylcholinesterase and lipoxygenase enzymes, however, these showed prominent activity against butyrylcholinesterase enzyme. It is clearly evident from the results that compounds, N-(butan-2-yl)-N-(1-hydroxy-2-methylpropan-2-yl)benzene sulfonamide (5e) and N-(allyl)-N-(1-hydroxy-2-methylpropan-2-yl)benzenesulfonamide (5f) were found to be potent inhibitor having IC50 value of 65.47 ± 0.69 and 79.36 ± 0.92 μmol, respectively, relative to eserine, a reference standard with IC50 value of 0.85 ± 0.001 μmol. These two compounds 5e and 5f were also showed good scavenging activity against DPPH.
本研究合成了一系列 N-(1-羟基-2-甲基丙-2-基)苯磺酰胺的 N-取代衍
生物。首先,2-
氨基-2-甲基丙-1-醇 (1) 与
苯磺酰氯 (2) 反应生成 N-(1-羟基-2-甲基丙-2-基)苯磺酰胺 (3)、N-(1-羟基-2-甲基丙-2-基)苯磺酰胺的 N 取代衍
生物 (5a-i)。所有这些衍
生物及其母体化合物都通过红外光谱、电离质谱和 1H NMR 光谱进行了表征。通过使用 2,2
-二苯基-1-苦基
肼(
DPPH)清除剂检测了这些化合物的抗氧化活性,并通过筛选它们对
乙酰胆碱酯酶、丁酰
胆碱酯酶和脂氧合酶的活性检测了它们的其他
生物活性。研究结果清楚地表明,N-(丁-2-基)-N-(1-羟基-2-甲基丙-2-基)
苯磺酸酰胺(5e)和 N-(烯丙基)-N-(1-羟基-2-甲基丙-2-基)
苯磺酸酰胺(5f)是有效的
抑制剂,其 IC50 值分别为 65.相对于 IC50 值为 0.85 ± 0.001 μmol 的参考标准艾
丝氨酸,5e 和 5f 分别为 65.47 ± 0.69 μmol 和 79.36 ± 0.92 μmol 的强效
抑制剂。这两种化合物 5e 和 5f 对
DPPH 也具有良好的清除活性。