| 发明名称 |
Epimerization of malonic acid esters. |
| 摘要 |
<p>A compound represented by the formula (II) epimerizes by the action of a base and the product is precipitated for shift-
<Chemistry id="chema01" num="0001"><Image id="ia01" he="36" wi="82" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein Ar is an optionally substituted aryl or heterocyclic group; Tet is an optionally substituted tetrazolyl group and B<Sup>1</Sup> and B<Sup>2</Sup> each is ing the equilibrium to yield the corresponding epimer represented by the formula (I):
<Chemistry id="chema02" num="0002"><Image id="ia02" he="37" wi="78" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>an ester forming group in the field of penicillin or cephalosporin chemistry.</p> |
| 申请公布号 |
EP0098545(A1) |
申请公布日期 |
1984.01.18 |
| 申请号 |
EP19830106437 |
申请日期 |
1983.07.01 |
| 申请人 |
SHIONOGI & CO., LTD. |
发明人 |
NARISADA, MASAYUKI;ONOUE, HIROSHI;OHTANI, MITSUAKI;WATANABE, FUMIHIKO |
| 分类号 |
C07D505/02;C07B31/00;C07B57/00;C07C67/00;C07D498/04;C07D505/00;C07D505/20;(IPC1-7):07D498/04 |
主分类号 |
C07D505/02 |
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