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US 7,678,912 B2Granted
Process for preparation of 4-amino-1-isobutyl-1H-imidazo[4,5-C]-quinoline (Imiquimod)
AssigneeUSV Limited
InventorsVenkatasubramanian Radhakrishnan Tarur, Suresh Mahadev Kadam, Anil Purushottam Joshi, Sachin Baban Gavhane
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Abstract
A process for preparation of 1-isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide, comprising oxidation of 1-isobutyl-1H-imidazoquinoline with meta-chloroperbenzoic acid.
Claims16
In a process of preparation of 4-Amino-1-isobutyl-1H-imidazo-[4,5-c]-quinoline, the improvement comprising:
- Oxidizing 1-Isobutyl-1H-imidazo-[4,5-c]-quinoline with meta-chloroperbenzoic acid in organic solvent to produce 1-Isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide.
Dependencies are inferred from the claim text.