Methicillin-resistant Staphylococcus aureus (MRSA) infections are a significant global health challenge due to the emergence of strains exhibiting resistance to nearly all classes of antibiotics. This necessitates the rapid development of novel antimicrobials to circumvent this critical problem. Screening of compounds based on phenotypes is one of the major strategies for finding new antibiotics at present. Hence, we here performed a phenotypic screening against MRSA and identified NPS-2143 exhibiting activity against MRSA with an MIC value of 16âμgâmlâ1. In order to discover more potent anti-MRSA agents, a series of derivatives of NPS-2143 were designed and synthesized. The most promising compounds 48 and 49 exhibited favorable antimicrobial activity with an MIC value of 2âμgâmlâ1.
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甲氧西林金黄色葡萄球菌(MRSA)感染是全球健康的一大挑战,因其出现了对几乎所有抗生素类别都具有耐药性的菌株。这迫切要求迅速开发新型抗菌药物以解决这一关键问题。基于表型的化合物的筛选是目前寻找新抗生素的主要策略之一。因此,我们在此对MRSA进行了表型筛选,并鉴定出对MRSA具有活性的NPS-2143,其最小抑菌浓度(MIC)值为16μg/ml。为了发现更有效的抗MRSA药物,我们设计并合成了NPS-2143的一系列衍
生物。最有希望的化合物48和49表现出良好的抗菌活性,其MIC值为2μg/ml。