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US4656262A 7-methoxy cephalosporin derivative 失效
7-甲氧基头孢菌素衍生物

7-methoxy cephalosporin derivative
摘要:
The 7-methoxy-3-heterocyclic thiomethyl cephalosporin derivative possessing excellent antimicrobial activity represented by the general formula ##STR1## wherein R.sup.1 represents ##STR2## group or HOOC-- group, R.sup.2 represents a nitrogen-containing heterocyclic group, and M represents a hydrogen atom or a cation residue forming a salt.
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