| 摘要 |
<p>Canada OXO COMPOUNDS AND PROCESS FOR THEIR MANUFACTURE The invention concerns 7.beta.-amino-cepham-3-one-4-carboxylic acid compounds, particularly esters thereof, and the N-substituted, especially N-acylated derivatives of such compounds. They can be used as intermediates, for example, for the manufacture of the corresponding enol ethers and esters, as well as the corresponding 3-unsubstituted 7.beta.amino-3-cephem-4-carboxylic acid compounds, which show outstanding pharmacological effects.</p> |
