1-(4-aminobutyl)-2-pentyl-1H-imidazo[4,5-c]quinolin-4-amine 、
异氰酸苯酯 以to provide 299 mg of N-[4-(4-amino-2-pentyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-N′-phenylurea as an off white solid, m.p. 159.0–160.4° C的产率得到N-[4-(4-amino-2-pentyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-N'-phenylurea