发明名称 |
RACEMISATION PROCESS FOR USE IN THE MANUFACTURE OF LEVOBUPIVACAINE AND RELATED PIPERIDINECARBOXANILIDE ANAESTHETIC AGENTS |
摘要 |
An optically-enriched piperidine-2-carboxanilide compound, in which the piperidine is optionally N-alkylated, is racemised by heating the compound in an aqueous medium, provided that the medium includes an organic cosolvent if the compound is N-alkylated. This process is particularly valuable, in conjuction with a resolution process, for the manufacture of levobupivacaine.
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申请公布号 |
WO9622281(A1) |
申请公布日期 |
1996.07.25 |
申请号 |
WO1996GB00067 |
申请日期 |
1996.01.12 |
申请人 |
CHIROSCIENCE LIMITED;DYER, ULRICH, CONRAD;LANGSTON, MARIANNE;WOODS, MARTIN |
发明人 |
DYER, ULRICH, CONRAD;LANGSTON, MARIANNE;WOODS, MARTIN |
分类号 |
C07B55/00;C07D211/60;(IPC1-7):C07D211/60 |
主分类号 |
C07B55/00 |
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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