1-acetyl-4-{[2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]methyl}piperidin-4-ol 、 1-({1-acetyl-4-[2-(methylsulfonyl)ethoxy]piperidin-4-yl}methyl)-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinoline 在
silica gel 、
methanol-dichloromethane 作用下,
以yielded 1-({1-acetyl-4-[2-(methylsulfonyl)ethoxy]piperidin-4-yl}methyl)-2-(ethoxyethyl)-1H-imidazo[4,5-c]quinoline (0.30 g, 13%)的产率得到1-({1-acetyl-4-[2-(methylsulfonyl)ethoxy]piperidin-4-yl}methyl)-2-(ethoxyethyl)-1H-imidazo[4,5-c]quinoline