US2008214846A1PendingUtilityA1

Pure darifenacin hydrobromide substantially free of oxidized darifenacin and salts thereof and processes for the preparation thereof

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Assignee: TEVA PHARMACEUTICALS USA INC FPriority: Dec 27, 2005Filed: May 6, 2008Published: Sep 4, 2008
Est. expiryDec 27, 2025(expired)· nominal 20-yr term from priority
Inventors:Valeriano MerliAugusto CanavesiPaola DaverioAlessandra Vailati
C07D 207/09C07D 207/48A61P 13/00C07D 307/79C07D 405/06
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Claims

Abstract

Provided are darifenacin hydrobromide free of oxidized darifenacin, and processes for the preparation thereof.

Claims

exact text as granted — not AI-modified
1 . A compound of the following formula I 
       
         
           
           
               
               
           
         
       
       wherein Y is a leaving group selected from the group consisting of Cl, I, brosyl, mesyl, tosyl, trifluoroacetyl, and trifluoromethansulfonyl. 
     
     
         2 . The compound of  claim 1 , wherein Y is Cl.

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