发明名称 |
FOERFARANDE FOER FRAMSTAELLNING AV EN FOERENING, VILKEN KAN ANVAENDAS SOM MELLANPRODUKT FOER FRAMSTAELLNING AV KEFALOSPORINER. |
摘要 |
<p>The invention relates to a novel process for preparing cephalosporins of the formula <IMAGE> in which R2 is hydrogen, cation, pivaloyloxymethyl or carboxyl and R3 is hydrogen, acetoxy, carbamoyloxy or S-Y, in which Y denotes an optionally substituted heterocyclic group or, where appropriate, a substituted pyridinium group, by removing the protecting group from a compound of the formula <IMAGE> by treating the latter with an aliphatic alcohol under acid conditions.</p> |
申请公布号 |
FI884801(A) |
申请公布日期 |
1988.10.18 |
申请号 |
FI19880004801 |
申请日期 |
1988.10.18 |
申请人 |
BIOCHEMIE GESELLSCHAFT M.B.H. |
发明人 |
PRAGER, BERNHARD CHRISTIAN;THALER, HEINRICH;STURM, HUBERT |
分类号 |
C07D;C07D501/04;C07D501/36;(IPC1-7):C07D/ |
主分类号 |
C07D |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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