发明名称 |
PROCESS FOR THE PREPARATION OF PENAM AND PENEM DERIVATIVES |
摘要 |
<p>The invention provides a process for the preparation of compounds of formula (I) wherein R<1>, R<2>, R<3>, R<4> and R<5> are as defined in the specification; and wherein any functional groups are optionally protected; and salts thereof; which process includes the step of reacting the intermediate formed by heating a compound of formula (II), in an inert solvent, with a compound of the formula S=C(R<3>)R<4> wherein R<1>, R<2>, R<3>, R<4> and R<5> are as defined in the specification and functional groups are optionally protected; and thereinafter, if necessary, removing any protecting groups. The compounds of the formula (I) are useful as intermediates in the preparation of penems and may possess antibacterial properties and/or inhibit beta -lactamase in their own right.</p> |
申请公布号 |
WO9800429(A1) |
申请公布日期 |
1998.01.08 |
申请号 |
WO1997GB01714 |
申请日期 |
1997.06.24 |
申请人 |
ZENECA LIMITED;GALLAGHER, TIMOTHY, CHARLES;HALES, NEIL, JAMES;WISEDALE, RICHARD;PLANCHENAULT, DENIS |
发明人 |
GALLAGHER, TIMOTHY, CHARLES;HALES, NEIL, JAMES;WISEDALE, RICHARD;PLANCHENAULT, DENIS |
分类号 |
C07D499/06;A61K31/43;C07D263/52;C07D499/00;C07D499/04;C07D499/86;C07D499/87;C07D499/88;C07D499/897;(IPC1-7):C07D499/04 |
主分类号 |
C07D499/06 |
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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