申请人:E. R. Squibb & Sons, Inc.
公开号:US04681937A1
公开(公告)日:1987-07-21
Antimicrobial activity is exhibited by .beta.-lactams having a ##STR1## substituent in the 1-position and an acylamino substituent in the 3-position, or a pharmaceutically acceptable salt thereof; wherein Y is oxygen or sulfur and R.sub.5 is hydroxyl, alkyl, substituted alkyl, phenyl, substituted phenyl, alkoxy, alkylthio, (substituted alkyl)oxy, (substituted alkyl)thio, phenyloxy, phenylthio, (substituted phenyl)oxy or (substituted phenyl)thio.
具有##
STR1##取代基于1-位置和
酰胺取代基于3-位置的β-内
酰胺类化合物或其药用可接受盐表现出抗微
生物活性;其中Y为
氧或
硫,R.sub.5为羟基、烷基、取代烷基、
苯基、取代
苯基、烷
氧基、烷
硫基、(取代烷基)
氧基、(取代烷基)
硫基、
苯氧基、
苯硫基、(取代
苯基)
氧基或(取代
苯基)
硫基。