发明名称 |
Novel 3-acyloxymethyl-cephem compounds useful as intermediates for preparing cephalosporin antibiotics |
摘要 |
Novel 3-acyloxymethyl-cephem compounds of the formula: <IMAGE> wherein R1 is hydrogen or an acyl group; W is acetonyl, or a group represented by -X-COOH or -X-OH (X is an organic residue) or salts thereof were found to be useful as starting materials for preparing cephalosporins of the formula: <IMAGE> wherein R3 stands for a residue of a nucleophilic compound and R1 has the same meaning as above.
|
申请公布号 |
US4245088(A) |
申请公布日期 |
1981.01.13 |
申请号 |
US19790046708 |
申请日期 |
1979.06.08 |
申请人 |
TAKEDA CHEMICAL INDUSTRIES, LTD. |
发明人 |
TSUSHIMA, SUSUMU;SENDAI, MICHIYUKI;SHIRAISHI, MITSURU |
分类号 |
A61K9/02;A61K31/43;C07D501/04;C07D501/16;C07D501/18;C07D501/26;(IPC1-7):C07D501/20 |
主分类号 |
A61K9/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|