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
溴诱导的乙酰氧
肟酸
乙烯基酯的内酰胺化促进了适合于在C(4)位置掺入
硫代甲基和扩展功能的单环β-内酰胺的合成。对所得的取代的N-羟基-
2-氮杂环丁酮进行精细加工,可以引入适于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的评估揭示了结构-活性关系(
SAR)和有效的新型单bactamtam抗生素的鉴定。相应的双
邻苯二酚偶联物42对革兰氏阴性细菌(包括碳青霉烯酶和产生碳
头孢菌素酶的鲍曼不动杆菌)具有优异的活性。,已被WHO列为全球关注的重点。