The invention provides a newly discovered oxadiazole class of antibiotics. The oxadiazoles impair cell-wall biosynthesis and exhibit activities against the Gram-positive bacteria such as the bacterium Staphylococcus aureus, including methicillin-resistant S. aureus (MRSA) and vancomycin-resistant and linezolid-resistant S. aureus. For example, 5-(1H-indol-5-yl)-3-(4-(4-(trifluoromethyl)phenoxy)phenyl)-1,2,4-oxadiazole (antibiotic 75b) was efficacious in a mouse model of MRSA infection, exhibiting a long half-life, a high volume of distribution, and low clearance. Antibiotic 75b antibiotic is bactericidal and is orally bioavailable. This class of antibiotics can be used as a therapeutic agent against infections by Gram-positive bacteria such as MRSA.
本发明提供了一种新发现的噁二唑类抗生素。噁二唑类抗生素会损害细胞壁的
生物合成,对革兰氏阳性细菌,如
金黄色葡萄球菌,包括耐
甲氧西林金黄色葡萄球菌(MRSA)、耐
万古霉素金黄色葡萄球菌和耐
利奈唑胺金黄色葡萄球菌具有活性。例如,5-(1H-
吲哚-5-基)-3-(4-(4-(三
氟甲基)苯氧基)苯基)-
1,2,4-恶二唑(抗生素 75b)在 MRSA 感染的小鼠模型中疗效显著,半衰期长,分布容积大,清除率低。抗生素 75b 具有杀菌和口服
生物利用度高的特点。这一类抗生素可用作治疗革兰氏阳性菌(如 MRSA)感染的药物。