发明授权
US4064344A 7-Methoxy-3-phosphoranylidenemethyl-cephalosporins 失效
7-甲氧基-3-亚磷酰基甲基头孢菌素

7-Methoxy-3-phosphoranylidenemethyl-cephalosporins
摘要:
Novel 7-methoxy 3-phosphoranylidene cephem compounds which find utility as intermediates in the preparation of antibiotically active 7-methoxy-3-vinyl cephalosporins.
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