1-(4-aminobutyl)-2-ethyl-1H-imidazo[4,5-c]quinolin-4-amine 、
丁酰氯 以to provide 0.77 g of N-[4-(4-amino-2-ethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]butanamide as a light brown solid, m.p. 147.7-148.8° C的产率得到N-[4-(4-amino-2-ethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]butanamide