The present invention provides a 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivative or its pharmaceutically acceptable salt, a process for the preparation thereof, and a pharmaceutical composition comprising the same. The 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivatives or their pharmaceutically acceptable salts show high oral absorption rate, and thus can be orally administered. The active metabolites thereof have a broad spectrum of antibacterial activities against Gram-positive and Gram-negative bacteria and excellent antibacterial activities against methicillin-resistant
Staphylococcus aurus
(MRSA) and quinolone-resistant strains (QRS). In particular, the acid addition salts of the 2-arylmethylazetidine-carbapenem-3-carboxylic acid ester derivatives are obtained in crystalline forms having excellent stability.
本发明提供了2-芳基甲基氮杂
环戊烯-碳青霉烯-3-
羧酸酯衍
生物或其药学上可接受的盐,其制备方法以及包含其的制药组合物。2-芳基甲基氮杂
环戊烯-碳青霉烯-3-
羧酸酯衍
生物或其药学上可接受的盐具有高口服吸收率,因此可以口服给药。其活性代谢物对革兰氏阳性和革兰氏阴性细菌具有广谱的抗菌活性,并且对
甲氧西林耐药
金黄色葡萄球菌(MRSA)和
喹诺酮耐药菌株(QRS)具有优异的抗菌活性。特别是,2-芳基甲基氮杂
环戊烯-碳青霉烯-3-
羧酸酯衍
生物的酸加成盐以晶体形式获得,具有优异的稳定性。