发明名称 |
Intermediates for preparing cephalosporins |
摘要 |
DELTA 3-Cephalosporins are prepared by reacting novel diorganodihalosilane or monorganodihalosilane derivatives of 7-aminocephalosporanic acid ("7ACA") and 7-amino-desacetoxycephalosporanic acid ("7ADCA") with known acylating agents followed by hydrolysis or alcoholysis to produce DELTA 3-cephalosporins with useful antibiotic activity. The dialkyldihalosilane derivatives are prepared by adding a base such as triethylamine slowly to a mixture of 7ACA or 7ADCA and a dialkyldihalosilane.
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申请公布号 |
US4051131(A) |
申请公布日期 |
1977.09.27 |
申请号 |
US19760669135 |
申请日期 |
1976.03.22 |
申请人 |
AMERICAN HOME PRODUCTS CORPORATION (DEL.) |
发明人 |
ROBINSON, CHARLES A. |
分类号 |
C07D501/06;C07D501/18;(IPC1-7):C07D501/18 |
主分类号 |
C07D501/06 |
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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