A Process for the Preparation Of 4-Amino-1-Isobutyl-1H-Imidazo[4,5-C]-Quinoline (Imiquimod)
申请人:Tarur Radhakrishnan Venkatasubramanian
公开号:US20080058527A1
公开(公告)日:2008-03-06
A process for preparation of imiquimod comprising oxidation of 1-Isobutyl-1H-imidazo quinoline quinoline (II) afforded 1-Isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide (III) which is isolated in pure form as its hydrochloride salt (IV) followed by conversion to 4-chloro derivative (V) and conversion to corresponding 4-iodo derivative (VI) which is a new intermediate. This new intermediate is convened to imiquimod (VIII) and purified via its novel maleate salt.
Process for Preparation of 4-amino-1-isobutyl-1H-Imidazo[4,5-C]-quinoline (Imiquimod)
申请人:Tarur Venkatasubramanian Radhakrishnan
公开号:US20090209764A1
公开(公告)日:2009-08-20
A process for the preparation of imiquimod comprising oxidation of 1-Isobutyl-
1
H-imidazo quinoline quinoline (II) afforded 1-Isobutyl-1H-imidazo-[4,5-c]-quinoline-5-N-oxide (III) which is isolated in pure form as its hydrochloride salt (IV) followed by conversion to 4-chloro derivative (V) and conversion to corresponding 4-iodo derivative (VI) which is a new intermediate. This new intermediate in convened to imiquimod (VIII) and purified via its novel maleate salt.
[EN] A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY PURE 4-AMINO-1-ISOBUTYL-1H-IMIDAZO[4,5-C]-QUINOLINE (IMIQUIMOD)<br/>[FR] PROCEDE PERMETTANT DE PREPARER DU 4-AMINO-1-ISOBUTYL-1H-IMIDAZO[4,5-C]-QUINOLEINE (IMIQUIMOD) ESSENTIELLEMENT PUR
申请人:USV LTD
公开号:WO2006070408A3
公开(公告)日:2006-12-21
A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY PURE 4-AMINO-1-ISOBUTYL-1H-IMIDAZOÝ4,5-C¨-QUINOLINE (IMIQUIMOD)