Halogenated trimethoprim derivatives as multidrug-resistant Staphylococcus aureus therapeutics
作者:Napon Nilchan、Wanida Phetsang、Taechin Nowwarat、Soraya Chaturongakul、Chutima Jiarpinitnun
DOI:10.1016/j.bmc.2018.05.019
日期:2018.10
potency that correlated with the ability of the halogen atom to facilitate in hydrophobic interaction to saDHFR. The most potent derivative, iodinated trimethoprim (TMP-I), inhibited pathogenic bacterial growth with MIC as low as 1.25 μg/mL while the clinically used TMP derivative, diaveridine, showed resistance. Similar to TMP, synergistic studies indicated that TMP-I functioned synergistically with sulfamethoxazole
已显示将卤素原子掺入药物分子可改善其性能,例如增强膜的通透性和增加与其靶标的疏水性相互作用。为了研究卤素取代对甲氧苄啶(TMP)抗菌活性的影响,我们合成了一系列卤素取代的TMP,并测试了它们对全球主要耐甲氧西林的金黄色葡萄球菌的抗菌活性。(MRSA)菌株。结构-活性关系分析表明效力的趋势与卤素原子促进与saDHFR的疏水相互作用的能力有关。最有效的衍生物碘化甲氧苄啶(TMP-1)抑制病原菌的生长,MIC低至1.25μg/ mL,而临床上使用的TMP衍生物二乙啶显示出耐药性。与TMP相似,协同研究表明TMP-1与磺胺甲恶唑具有协同作用。由廉价的起始原料香草醛合成的简便性凸显了TMP-1作为MRSA感染抗菌剂的潜力。