1-(4-aminobutyl)-2-ethyl-1H-imidazo[4,5-c]quinolin-4-amine 、
异丁酰氯 以to provide 0.34 g of N-[4-(4-amino-2-ethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-2-methylpropanamide as an off white solid, m.p. 155.4-156.3° C.的产率得到N-[4-(4-amino-2-ethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]-2-methylpropanamide