申请人:E. R. Squibb & Sons, Inc.
公开号:US04501697A1
公开(公告)日:1985-02-26
Antibacterial activity is exhibited by .beta.-lactams having the formula ##STR1## wherein R is hydrogen or methoxy; R.sub.1 is an acyl group derived from a carboxylic acid; R.sub.2 and R.sub.3 are each independently hydrogen, alkyl, or aryl or R.sub.2 and R.sub.3 when taken together with the nitrogen atom to which they are attached are ##STR2## wherein n is 4 or 5 and R.sub.4 is hydrogen, alkyl or amino; and M.sup..sym. is hydrogen or a cation.
具有以下式子的β-内酰胺表现出抗菌活性:##STR1## 其中R为氢或甲氧基;R.sub.1为来自羧酸的酰基;R.sub.2和R.sub.3各自独立地为氢、烷基或芳基,或者当它们与它们所连接的氮原子一起取时,它们是##STR2## 其中n为4或5,R.sub.4为氢、烷基或氨基;M.sup..sym.为氢或阳离子。