乙氧基乙酰氯   、                                                                                      
7-bromo-N4-{[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]methyl}quinoline-3,4-diamine   、                                                                                      
三乙胺                                                                                                                                                                                                                                                                                                          以to yield 7-bromo-1-{[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]methyl}-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinoline (8.88 g) as a white solid, mp 89-90° C.的产率得到7-bromo-1-{[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]methyl}-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinoline