| 摘要 |
<p> beta -Lactams having the formula <CHEM> R2 is hydrogen or methoxy; R3 and R4 are the same or different and each is hydrogen, alkyl, substituted alkyl or aryl; R5 is hydrogen, alkyl, substituted alkyl, or aryl; and R6 is hydroxy, alkoxy, (substituted akyl)oxy, aryloxy, alkyl, substituted alkyl, aryl, amino, substituted amino, alkylthio or arylthio; have antibacterial activity.</p> |
