| 发明名称 |
3-HYDROXYMETHYL-3-BUTENOIC ACID DERIVATIVES,PROCESSES FOR THEIR PREPARATION AND PROCESS FOR THE PREPARATION OF ANTIBACTERIAL 1-OXACEPHAM DERIVATIVES USING THEM |
| 摘要 |
<p>Useful intermediates, 7 alpha -acylamino-3-(oxo or exomethylene)-1-dethia-1-oxacepham-4 alpha -carboxylates, are produced by the intramolecular carbenoid insertion of a 2-diazo-3-(oxo or exomethylene)-4-(3 alpha -acylamino-2-oxoazetidin-4 beta -yl)oxybutyrate prepared in several steps from the corresponding oxazolinoazetidinone and diketone.</p> |
| 申请公布号 |
IL69546(A) |
申请公布日期 |
1988.03.31 |
| 申请号 |
IL19830069546 |
申请日期 |
1983.08.23 |
| 申请人 |
SHIONOGI & CO. LTD. |
发明人 |
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| 分类号 |
C07D205/08;C07C51/00;C07C59/21;C07C67/00;C07C241/00;C07C245/18;C07D205/085;C07D261/02;C07D309/12;C07D498/00;C07D505/00;C07F7/08;C07F7/10;C07F7/18;(IPC1-7):C07C69/732;C07D498/02;C07D405/12;C07D309/08;C07D307/18;C07C131/00;C07C113/00 |
主分类号 |
C07D205/08 |
| 代理机构 |
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代理人 |
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