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公开(公告)号:US5250710A
公开(公告)日:1993-10-05
申请号:US879335
申请日:1992-05-07
申请人: Pierre F. Chabardes , Lucette Duhamel , Pierre Duhamel , Jerome Guillemont , Jean-Marie Poirier
发明人: Pierre F. Chabardes , Lucette Duhamel , Pierre Duhamel , Jerome Guillemont , Jean-Marie Poirier
IPC分类号: C07C45/60 , C07D309/30 , C07D315/00
CPC分类号: C07C403/14 , C07C45/60 , C07D309/30
摘要: The present invention relates to dihydropyran derivatives, processes for preparing, and processes of using the derivatives. The derivatives are prepared by condensation of lithium dienolate of prenal with an aldehyde or a ketone.The pyran derivative prepared from .beta.-ionylideneacetaldehyde when treated in the presence of a catalyst directly forms retinal.
摘要翻译: 本发明涉及二氢吡喃衍生物,制备方法和使用衍生物的方法。 衍生物通过将prenal的二烯酸锂与醛或酮的缩合来制备。 由β-亚酰基乙醛制备的吡喃衍生物在催化剂存在下处理直接形成视网膜。
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公开(公告)号:US5157133A
公开(公告)日:1992-10-20
申请号:US620609
申请日:1990-12-03
申请人: Pierre F. Chabardes , Lucette Duhamel , Pierre Duhamel , Jerome Guillemont , Jean-Marie Poirier
发明人: Pierre F. Chabardes , Lucette Duhamel , Pierre Duhamel , Jerome Guillemont , Jean-Marie Poirier
IPC分类号: C07C45/60 , C07C403/14 , C07D309/30 , C07D311/72 , C07D403/14
CPC分类号: C07C403/14 , C07C45/60 , C07D309/30
摘要: The present invention relates to dihydropyran derivatives, processes for preparing, and processes of using the derivatives. The derivatives are prepared by condensation of lithium dienolate of prenal with an aldehyde or a ketone.The pyran derivative prepared from .beta.-ionylideneacetaldehyde when treated in the presence of a catalyst directly forms retinal.
摘要翻译: 本发明涉及二氢吡喃衍生物,制备方法和使用衍生物的方法。 衍生物通过将prenal的二烯酸锂与醛或酮的缩合来制备。 由β-亚酰基乙醛制备的吡喃衍生物在催化剂存在下处理直接形成视网膜。
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