A new series of amino/nitro-substituted 3-arylcoumarins were synthesized and their antibacterial activity against clinical isolates of Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) was evaluated. Some of these molecules exhibited antibacterial activity against S. aureus comparable to the standards used (oxolinic acid and ampicillin). The preliminary structure-activity relationship (SAR) study showed that the antibacterial activity against S. aureus depends on the position of the 3-arylcoumarin substitution pattern. With the aim of finding the structural features for the antibacterial activity and selectivity, in the present manuscript different positions of nitro, methyl, methoxy, amino and bromo substituents on the 3-arylcoumarin scaffold were reported.
我们合成了一系列新的
氨基/硝基取代的 3-芳基
香豆素,并评估了它们对临床分离的
金黄色葡萄球菌(革兰氏阳性)和大肠杆菌(革兰氏阴性)的抗菌活性。其中一些分子对
金黄色葡萄球菌的抗菌活性与所用标准(
草酸和
氨苄西林)相当。初步的结构-活性关系(
SAR)研究表明,对
金黄色葡萄球菌的抗菌活性取决于 3-芳基
香豆素取代模式的位置。为了寻找抗菌活性和选择性的结构特征,本手稿报告了 3-芳基
香豆素支架上硝基、甲基、甲氧基、
氨基和
溴取代基的不同位置。