A series of novel 11-[3-[(arylcarbamoyl)oxy]propylamino]-11-deoxy-6-O-methyl-3-oxoerythromycin A 11-N,12-O-cyclic carbamate derivatives (6aâh) were designed, synthesized and evaluated for their antibacterial activities in vitro. Most of these compounds had significant antibacterial activity against two groups of pathogens of Methicillin-sensitive Staphylococcus aureus (MIC50=0.031â2âμgâmlâ1) except 6g and Methicillin-sensitive S. epidermidis (MIC50=0.031â0.5âμgâmlâ1). MIC90 of 6d against Methicillin-resistant S. epidermidis was at least 16-fold better than that of erythromycin (EMA), azithromycin (AZM) and ABT-773. 6d and 6e had more potent antibacterial activity against S. pneumoniae than EMA, AZM and ABT-773. In particular, compounds 6d and 6e also showed relatively potent activity against Haemophilus influenzae and Streptococcus hemolyticus.
设计、合成并评价了一系列新型11-[3-[(芳基
氨基甲酰基)氧]丙基
氨基]-11-脱氧-6-O-甲基-3-氧基
红霉素A 11-N,12-O-环状
氨基甲酸酯衍
生物(6a-h)的体外抗菌活性。除6g外,这些化合物大多对两组病原体(
甲氧西林敏感
金黄色葡萄球菌的MIC50=0.031-2 μg ml-1和
甲氧西林敏感表皮葡萄球菌的MIC50=0.031-0.5 μg ml-1)具有显著的抗菌活性。6d对
甲氧西林耐药表皮葡萄球菌的MIC90至少比
红霉素、
阿奇霉素和ABT-773好16倍。6d和6e对肺炎链球菌的抗菌活性比
红霉素、
阿奇霉素和ABT-773更强。特别是,化合物6d和6e对流感嗜血杆菌和溶血性链球菌也显示出相对较强的活性。