Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Vladimir Naddaka0
Oded Arad0
Shady Saeed0
Stephen Cherkez0
Date of Patent
February 9, 2010
0Patent Application Number
116750240
Date Filed
February 14, 2007
0Patent Primary Examiner
Patent abstract
The present invention provides a process for preparing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod). The process preferably includes heating 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline of formula (II) with ammonia in a polar aprotic solvent at relatively moderate pressure to produce imiquimod, and optionally purifying the imiquimod. The process of the present invention can produce highly pure imiquimod in high yield.
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