| 发明名称 |
METHOD OF OBTAINING OF 3- HALOMETHYLCEPHEMS |
| 摘要 |
<p>3-Halomethyl-3-cephems are provided by reacting a 3-methylenecepham with an alkali metal salt of a lower alcohol or a bicyclic amidine base in the presence of a positive halogenating agent at a temperature ranging from -80 DEG to about 20 DEG C. The 3-halomethylcephems provided by this invention are useful intermediates for the preparation of known cephalosporin antibiotics.</p> |
| 申请公布号 |
BG27754(A3) |
申请公布日期 |
1979.12.12 |
| 申请号 |
BG19770035756 |
申请日期 |
1977.03.22 |
| 申请人 |
ELI LILLY AND CO |
发明人 |
KOPPEL,GARY A. |
| 分类号 |
A61K31/545;A61K31/546;C07C;C07D;C07D501/00;C07D501/04;C07D501/16;C07D501/24;C07D501/28;C07D501/34;C07D501/57;C07D501/60;(IPC1-7):C07D501/24 |
主分类号 |
A61K31/545 |
| 代理机构 |
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代理人 |
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| 地址 |
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