3-(4-chloro-5-nitropyrimidin-2-yl)-6-fluoroimidazo[1,2-a]pyridine 、
(R)-(-)-3-甲基-2-丁胺 以Obtained as a yellow solid (126 mg, 85%) from 3-(4-chloro-5-nitropyrimidin-2-yl)-6-fluoroimidazo[1,2-a]pyridine (Preparation 49b) and (R)-3-methylbutan-2-amine following the experimental procedure的产率得到(R)-2-(6-fluoroimidazo[1,2-a]pyridin-3-yl)-N-(3-methylbutan-2-yl)-5-nitropyrimidin-4-amine