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Preparation of amides of retinoic acid via mixed anhydride and mixed carbonate intermediates
   
Document Number
US Patent 7321064
Issued Date
January 22, 2008
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Abstract
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.
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Number of Claims:
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Published
January 22, 2008
Application Number
11/715,571
Filed
March 8, 2007
US Classification
564/133  
Int'l Classification
C07C   231/00   (20060101)  
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