| abstract |
β-Lactams having the formulan n R 2 is hydrogen or methoxy; R 3 and R 4 are the same or different and each is hydrogen, alkyl, substituted alkyl or aryl; R 5 is hydrogen, alkyl, substituted alkyl, or aryl; and R e is hydroxy, alkoxy, (substituted alkyl)oxy, aryloxy, alkyl, substituted alkyl, aryl, amino, substituted amino, alkylthio or arylthio; have antibacterial activity. |