| 摘要 |
Carbapenem compounds having a substituted phenyl or a substituted thienyl directly attached to the 3-position of carbapenem nucleus as represented by the formula: <CHEM> wherein Ring E is benzene ring or thiophene ring; R<1> is optionally OH-substituted C1-3 alkyl; R<2> and R<3> represent each H, optionally substituted lower alkyl, etc.; R is H, or a group which is hydrolyzed in the living body to regenerate a carboxyl group, etc.; X is O or S; and Y represents H, lower alkyl, etc., or pharmaceutically acceptable salts thereof and medicaments containing said compound as the active ingredient. These compounds exhibit an excellent antibacterial activity over a broad range of Gram-positive and Gram-negative bacteria, in particular, penicillin-resistant Staphylococcus pneumoniae (PRSP) which has been isolated at an elevated frequency in recent years and thus causes a serious clinical problem, and Haemophilus influenzae which has acquired resistance against the existing beta -lactam antibiotics over a wide scope due to penicillin-binding protein (PBP) mutations such as beta -lactamase non-producing ampicillin-resistant (BLNAR) Haemophihis influenzae. |
