| 发明名称 |
ZPUSOB VYROBY (S)-EPIMERU ESTERU KYSELINY 7BETA-MALONAMIDO-7ALFA-METHOXY-3-TETRAZOLYLTHIOMETHYL-1-DETHIA-1-OXA-3-CEFEM-4-KARBOXYLOVE |
| 摘要 |
<p>A compound represented by the formula (II) epimerizes by the action of a base and the product is precipitated for shifting the equilibrium to yield the corresponding epimer represented by the formula (I). <IMAGE> (II) <IMAGE> (I) wherein Ar is an optionally substituted aryl or heterocyclic group; Tet is an optionally substituted tetrazolyl group and B1 and B2 are each ester forming group in the field of penicillin or cephalosporin chemistry.</p> |
| 申请公布号 |
CS8305036(A2) |
申请公布日期 |
1985.09.17 |
| 申请号 |
CS19830005036 |
申请日期 |
1983.07.04 |
| 申请人 |
SHIONOGI AND CO.,LTD.,JP |
发明人 |
NARISADA MASAYUKI,JP;ONOUE HIROSHI,JP;OHTANI MITSUAKI,JP;WATANABE FUMIHIKO,JP |
| 分类号 |
C07D505/02;C07B31/00;C07B57/00;C07C67/00;C07D498/04;C07D505/00;C07D505/20;(IPC1-7):C07D498/04 |
主分类号 |
C07D505/02 |
| 代理机构 |
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