1-(4-aminobutyl)-1H-imidazo[4,5-c]quinolin-4-amine 、
6-氰基-3-吡啶羰酰氯 以to provide N3-[4-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-6-cyanonicotinamide as an off white powder, m.p. 125.0-129.0° C的产率得到N3-[4-(4-Amino-1 H-imidazo[4,5-c]quinolin-1-yl)butyl]-6-cyanonicotinamide