1-(3-aminopropyl)-2-butylimidazo[4,5-c]quinolin-4-amine 、
异氰酸丙酯 以to provide 1.34 g of N-[3-(4-amino-2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)propyl]-N′-propylthiourea as a crystalline solid, m.p. 144.5–145.5° C的产率得到N-[3-(4-amino-2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)propyl]-N'-propylthiourea