乙氧基乙酰氯 、
7-bromo-N4-{[2,2-dimethyl-1,3-dioxolan-4-yl]methyl}quinoline-3,4-diamine 以to yield 7-bromo-1-[(2,2-dimethyl-1,3-dioxolan-4-yl)methyl]-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinoline (30.23 g) as an off white solid, mp 138-140° C.的产率得到7-bromo-1-[(2,2-dimethyl-1,3-dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinoline