Synthesis, biological evaluation and molecular docking of 2-phenyl-benzo[d]oxazole-7-carboxamide derivatives as potential Staphylococcus aureus Sortase A inhibitors
作者:Yong Zhang、Jian Bao、Xin-Xian Deng、Wan He、Jia-Jun Fan、Fa-Qin Jiang、Lei Fu
DOI:10.1016/j.bmcl.2016.06.074
日期:2016.8
exhibited excellent inhibitory activity (IC50 = 19.8–184.2 μM). Structure–activity relationship studies demonstrated that substitution at 7-position and 2-position of benzoxazole had great influence on the activities. Specifically, the substituent at 7-position is indispensable for inhibitory activity. The molecular docking studies revealed the i-butyl amide group went towards the β6/β7 loop-β8 substructure
设计,合成并评估了一系列新型的2-苯基-苯并[ d ]恶唑-7-羧酰胺衍生物,并以已知的分选酶A抑制剂pHMB为阳性化合物对金黄色葡萄球菌分选酶A的体外抑制活性(IC 50 = 130μM))。大多数化合物表现出出色的抑制活性(IC 50 = 19.8–184.2μM)。结构-活性关系研究表明,苯并恶唑的7位和2位取代对活性有很大影响。具体而言,对于抑制活性而言,在7位的取代基是必不可少的。分子对接研究揭示了我-丁基酰胺基朝向蛋白质的β6/β7环-β8亚结构,苯并恶唑核心位于Ala118,Val166,Val168,Val169和Ile182组成的疏水口袋中,从而使整个分子变成L形模态,成为被Sortase A识别。