申请人:E.R. Squibb & Sons, Inc.
                            
                            
                                公开号:EP0243924A2
                            
                            
                                公开(公告)日:1987-11-04
                            
                            
Antibacterial activity is exhibited by 2-azetidinones having an acylamino substituent in the 3-position and having an activating group in the 1-position of the formula
wherein R4 is -CH2-Z,
or
and Z is
                            在 3 位上具有酰
氨基取代基并在 1 位上具有活化基团的 
2-氮杂环丁酮具有抗菌活性,其式为
其中 R4 为 -
CH2-Z、
或
而 Z 是