(8S)-N-({5-[(3R)-3-(dimethylamino)-1-pyrrolidinyl]imidazo[1,2-a]pyridin-2-yl}methyl)-N-{(1S)-1-[4-(methyloxy)phenyl]ethyl}-5,6,7,8-tetrahydro-8-quinolinamine 、
乙醛 以to give a yellow oil (48% yield for two steps)的产率得到(8S)-N-({5-[(3R)-3-(dimethylamino)-1-pyrrolidinyl]imidazo[1,2-a]pyridin-2-yl}methyl)-N-ethyl-5,6,7,8-tetrahydro-8-quinolinamine