Preparation of amides of retinoic acid via mixed anhydride and mixed carbonate intermediates
申请人:Cedarburg Pharmaceuticals, Inc.
公开号:US07321064B1
公开(公告)日:2008-01-22
Processes for preparing amides of retinoic acid are disclosed. Intermediates useful in the preparation of amides of retinoic acid are also disclosed. In one version of the invention, fenretinide is produced via activation of retinoic acid (tretinoin) via its corresponding mixed anhydride or mixed carbonate followed by reaction of the activated intermediate with 4-aminophenol. Other amides of retinoic acid and isomers of retinoic acid, such as the 9-cis-form or 13-cis-form can also be made by this invention.
本发明公开了制备视黄酸酰胺的方法。还公开了用于制备视黄酸酰胺的中间体。在本发明的一个版本中,通过激活视黄酸(维甲酸)及其相应的混合酐或混合碳酸酯,然后与4-氨基苯酚反应,从而生产了非维甲酸。本发明还可以制备其他视黄酸酰胺和视黄酸的异构体,如9-顺式形式或13-顺式形式。