Preparation of 1H-imidazo[4,5-C] quinolin 4-amines via novel 1H-imidazo[4,5-c] quinolin 4-cyano and 1H-imidazo[4,5-c] quinolin 4-carboxamide intermediates

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United States of America Patent

PATENT NO 7166721
APP PUB NO 20050101627A1
SERIAL NO

11009259

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Abstract

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The invention relates to a process for the synthesis of 1H-imidazo[4,5-c] quinoline 4-cyano and 1H-imidazo[4,5-c]quinoline 4-carboxamide intermediates useful in preparing 1H-imidazo[4,5-C] quinoline 4-amines, a process for preparing 1H-imidazo[4,5-C] quinoline 4-amines using such intermediates; and, to the 1H-imidazo[4,5-c] quinoline 4-cyano and 1H-imidazo[4,5-c] quinoline 4-carboxamide intermediates. More particularly, the invention relates to a process for the preparation of 1-isobutyl-1H-imidazo[4,5-C] quinoline 4-amine (Imiquimod) using two intermediates, 1-isobutyl-1H-imidazo[4,5-c] quinoline 4-cyano and 1-isobutyl-1H-imidazo[4,5-c] quinoline 4-carboxamide, and to the said intermediates.

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Patent Owner(s)

  • TEVA GYOGYSZERGYAR RESZVENYTARSASAG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bianchi, Stefano Breccia Como, IT 43 429
Mantovani, Silvia Lendinara, IT 19 156
Merli, Valeriano Cremella Lecco, IT 31 189

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