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.
制备依米奎莫德的过程包括将1-异丁基-
1H-咪唑喹啉喹啉(II)氧化,得到1-异丁基-
1H-咪唑-[4,5-c]-
喹啉-5-N-氧化物(III),该化合物以其盐酸盐(IV)的纯形式分离,接着将其转化为4-
氯衍
生物(V),再转化为相应的4-
碘衍
生物(VI),这是一种新的中间体。这种新的中间体转化为依米奎莫德(VIII),并通过其新型
马来酸盐进行纯化。