AbstractSulfur‐containing classes of the scaffold “Arylthioindoles” have been evaluated for antibacterial activity; they demonstrated excellent potency against methicillin‐resistant Staphylococcus aureus (MRSA) as well as against vancomycin‐resistant strains and a panel of clinical isolates of resistant strains. In this study, we have elucidated the mechanism of action of lead compounds, wherein they target the cell wall of S. aureus. Further, S. aureus failed to develop resistance against two lead compounds tested in a serial passage experiment in the presence of the compounds over a period of 40 days. Both the compounds demonstrated comparable in vivo efficacy with vancomycin in a neutropenic mice thigh infection model. The results of these antibacterial activities emphasize the excellent potential of thioethers for developing novel antibiotics and may fill in as a target for the adjustment of accessible molecules to develop new powerful antibacterial agents with fewer side effects.
摘要 已经对 "芳硫基吲哚 "支架的含硫类化合物进行了抗菌活性评估;这些化合物对耐甲氧西林金黄色葡萄球菌(MRSA)、耐万古霉素菌株和耐药菌株的临床分离物均表现出卓越的效力。在这项研究中,我们阐明了先导化合物的作用机制,即它们靶向金黄色葡萄球菌的细胞壁。此外,在对两种先导化合物进行了为期 40 天的连续培养实验后,金黄色葡萄球菌未能对这两种先导化合物产生耐药性。在嗜中性粒细胞小鼠大腿感染模型中,这两种化合物的体内疗效与万古霉素相当。这些抗菌活性的结果突出了硫醚在开发新型抗生素方面的巨大潜力,并可能成为调整可获得分子的目标,从而开发出副作用更小的新型强效抗菌剂。