申请人:E. R. Squibb & Sons, Inc.
公开号:US04801705A1
公开(公告)日:1989-01-31
Antibacterial activity is exhibited by .beta.-lactams having a 3-acylamino substituent and having in the 1-position an activating group of the formula ##STR1## wherein R is
β-内酰胺具有3-酰氨基取代基并且在1-位置具有符号为##STR1##的活化基团,表现出抗菌活性,其中R是