| 摘要 |
<p>6 beta -(3-Carboxyphenylacetylamino)-2 alpha -substituted-2 beta -methylpenam-3-carboxylic acids and 6 beta -adipoylamino-2 alpha -substituted-2 beta -methylpenam-3-carboxylic acids, wherein the alpha -substituent is C1-C3 alkyl, C1-C3 alkoxy, vinyl or allenyl, are converted by the enzyme deacetoxycephalosporin C synthetase to the 7 beta -(3-carboxyphenylacetylamino)-3-substituted-3-cephem-4-carboxylic acid and the 7 beta -adipoylamino-3-substituted-3-cephem-4-carboxylic acid.</p> |
