1-(4-aminobutyl)-1H-imidazo[4,5-c]quinolin-4-amine 、
3-喹啉羰酰氯 以to provide N3-[4-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-3-quinolinecarboxamide as a white crystalline solid, m.p. 116.0-118.0° C. (decomposition)的产率得到N3-[4-(4-Amino-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-3-quinolinecarboxamide