Synthesis and antibacterial evaluation of novel cationic chalcone derivatives possessing broad spectrum antibacterial activity
作者:Wen-Chao Chu、Peng-Yan Bai、Zhao-Qing Yang、De-Yun Cui、Yong-Gang Hua、Yi Yang、Qian-Qian Yang、En Zhang、Shangshang Qin
DOI:10.1016/j.ejmech.2017.12.009
日期:2018.1
an urgent need to identify new antibiotics with novel mechanisms that combat antibiotic resistant bacteria. Herein, a series of chalcone derivatives that mimic the essential properties of cationic antimicrobial peptides were designed and synthesized. Antibacterial activities against drug-sensitive bacteria, including Staphylococcus aureus, Enterococcus faecalis, Escherichia coli and Salmonella enterica
迫切需要鉴定具有对抗抗生素抗性细菌的新机制的新抗生素。本文中,设计并合成了一系列模仿阳离子抗微生物肽基本特性的查尔酮衍生物。对包括金黄色葡萄球菌,粪肠球菌,大肠杆菌和沙门氏菌在内的药物敏感细菌的抗菌活性,以及耐甲氧西林金黄色葡萄球菌(MRSA),KPC-2产生和NDM-1-的临床多重耐药菌株评价产生耐碳青霉烯的肠杆菌科细菌。代表性化合物5a(MIC:1μg/ mL金黄色葡萄球菌,针对MRSA的0.5μg/ mL)和5g(MIC:针对金黄色葡萄球菌的0.5μg/ mL,针对MRSA的0.25μg/ mL)对革兰氏阳性菌和革兰氏阴性菌均具有良好的杀菌活性,包括该药物耐药菌种MRSA,KPC和NDM。已证明这些具有膜活性的抗菌化合物可有效减少细菌生物膜中的活细胞数,并且不会诱导细菌产生抗药性。另外,在合适的浓度下,这些代表性分子对哺乳动物细胞的毒性可忽略不计。综合结果表明,该系列阳离子查耳酮衍生物具有抗细菌感染的潜在治疗作用。