According to the invention there is provided a antibacterial cephalosporin derivative of the formula:
in which X is sulphur, oxygen, methylene or sulphinyl; R3 is hydrogen or methoxy; R1 und R2 are known in the cephalosporin art and R4 is an aminomethyl group in which the amino group carries one of various positively charged nitrogen-containing species set out in the specification and optionally a further substituent selected from hydrogen, lower alkyl, benzyl or heteroailyloweralkyl groups.
根据本发明,提供了一种抗菌
头孢菌素衍
生物,其分子式为
其中,X 是
硫、氧、亚甲基或亚磺酰基;R3 是氢或甲氧基;R1 和 R2 是
头孢菌素技术中已知的;R4 是
氨基甲基,其中
氨基带有说明书中列出的各种带正电荷的含氮基团之一,并可选择带有选自氢、低级烷基、苄基或杂环低级烷基的另一个取代基团。