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.
本发明揭示了制备
维甲酸酰胺的工艺。本发明还揭示了在制备
维甲酸酰胺中有用的中间体。在本发明的一个版本中,通过激活
维甲酸(
视黄酸)的相应混合酸酐或混合
碳酸酯,然后将激活的中间体与4-
氨基苯酚反应来生产非诺雷酯。此外,此发明还可以制备
维甲酸酰胺和
维甲酸的异构体,例如9-顺式形式或13-顺式形式。