申请人:University of Notre Dame du Lac
公开号:US11400079B2
公开(公告)日:2022-08-02
Bromine induced lactamization of vinyl acetohydroxamates facilitated syntheses of monocyclic β-lactams suitable for incorporation of a thiomethyl and extended functionality at the C(4) position. Elaboration of the resulting substituted N-hydroxy-2-azetidinones allowed incorporation of functionalized α-amino substituents appropriate for enhancement of antibiotic activity. Evaluation of antibacterial activity against a panel of Gram-positive and Gram-negative bacteria revealed structure-activity-relationships (SAR) and identification of potent new monobactam antibiotics. The corresponding bis-catechol conjugate, 42, has excellent activity against Gram-negative bacteria including carbapenemase and carbacephalosporinase producing strains of Acinetobacter baumannii which have been listed by the WHO as being of critical concern worldwide.
乙酰羟肟酸乙烯酯的溴诱导内酰胺化促进了适合在 C(4) 位加入硫代甲基和扩展官能团的单环 β-内酰胺的合成。对所得取代的 N-羟基-2-氮杂环丁酮进行细化,可加入适合增强抗生素活性的官能化 α-氨基取代基。对一组革兰氏阳性和革兰氏阴性细菌的抗菌活性评估揭示了结构-活性-关系(SAR),并确定了强效的新型单内酰胺类抗生素。相应的双邻苯二酚共轭物 42 对革兰氏阴性菌(包括产生碳青霉烯酶和碳头孢烯酶的鲍曼不动杆菌菌株)具有出色的活性,这些菌株已被世界卫生组织列为全球严重关切的问题。