发明授权
US4485235A Process for preparing 7-.alpha.-methoxycephem compounds 失效
制备7-甲氧基头孢烯化合物的方法

Process for preparing 7-.alpha.-methoxycephem compounds
摘要:
Disclosed is a novel cephem compound represented by the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n are as defined in the specification, which is a useful intermediate for synthesizing various cephalosporin antibiotics having a methoxy group at the 7.alpha.-position thereof. Also disclosed is a process for preparing the same.
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