1-(4-aminobutyl)-1H-imidazo[4,5-c]quinolin-4-amine 、
2-乙氧基-1-萘甲酰氯 以to provide N1-[4-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-2-ethoxy-1-naphthamide as a white powder, m.p. 219° C. (decomposition)的产率得到N1-[4-(4-Amino-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-2-ethoxy-1-naphthamide