tert-butyl 4-(6-((9-cyclopentyl-9Hpyrido[4′,3′:4,5]pyrrolo[2,3-d]pyrimidin-2-yl)amino)-3-pyridinyl)-1-piperazinecarboxylate 在
silica gel 、 Dichloromethane methanol ammonium hydroxide 作用下,
以
trifluoracetic acid-dichloromethane 为溶剂,
反应 0.5h,
以to give the title compound (7) as an off-white solid (2.60 g, 98%)的产率得到9-cyclopentyl-N-(5-(1-piperazinyl)-2-pyridinyl)-9H-pyrido-[4′,3′:4,5]pyrrolo[2,3-d]pyrimidin-2-amine