发明授权
US4197402A Cephalosporin analogues 失效
头孢菌素类似物

Cephalosporin analogues
摘要:
1-Oxa-cephalosporin analogues of the formula: ##STR1## [wherein X is 3-thienylmalonyl, phenylmalonyl, 4-hydroxyphenylmalonyl, or 2-fluoro-4-hydroxyphenylmalonyl;Y is hydrogen or methoxy; andR is hydrogen, alkali metal, or alkaline earth metal]and the preparation thereof.
公开/授权文献
信息查询
0/0