Synthesis and biological evaluation of sulfonamide-based 1,3,4-oxadiazole derivatives
作者:S. Kavitha、Z. Nasarullah、K. Kannan
DOI:10.4314/bcse.v33i2.11
日期:——
A novel series of 1,3,4-oxadiazole containing sulfonamide derivatives were synthesized by 5-(5-cyclohexyl-1,3,4-oxadiazol-2-yl)-2-methyl-benzenesulfonyl chloride. A good yield of intermediate with various substituted like aryl/hetero was formed. All the synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR and mass spectral studies. These compounds were evaluated for their preliminary bioassay in vitro antimicrobial activity, anti-inflammatory and anti-diabetic activities. In this series, most of the compounds have good anti-inflammatory activity. Particularly, compounds 5c, 5d and 5e showed excellent anti-inflammatory activity with IC50 values of 110, 110, and 111 μg/mL than diclofenac (157 μg/mL). The frontier orbital energy and the global reactivity descriptor were discussed for the tested compounds using RB3LYP/311G(d,p) basis set. Results revealed that the theoretical calculations of antimicrobial activity were closely related to quantum chemical parameters.
一系列新的含有磺酰胺衍生物的1,3,4-噁二唑化合物是通过5-(5-环己基-1,3,4-噁二唑-2-基)-2-甲基苯磺酰氯合成的。合成过程中获得了良产率的中间体,具有不同的取代基,如芳基/杂原子基团。所有合成的化合物通过傅里叶变换红外光谱(FT-IR)、氢核磁共振(1H NMR)、碳-13核磁共振(13C NMR)及质谱研究进行了表征。这些化合物在体外进行了初步的生物活性评估,包括抗菌活性、抗炎活性和抗糖尿病活性。在这个系列中,大多数化合物表现出较好的抗炎活性。特别是化合物5c、5d和5e的抗炎活性优异,其IC50值分别为110、110和111 μg/mL,而双氟氨基酮的IC50值为157 μg/mL。使用RB3LYP/311G(d,p)基组讨论了测试化合物的前沿轨道能量和全局反应性描述符。结果显示,抗菌活性的理论计算与量子化学参数密切相关。