7-cyclopentyl-2-[5-(piperazine-1-carbonyl)pyridin-2-ylamino]-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide 、
2-溴乙醇 以to give 7-cyclopentyl-2-{5-[4-(2-hydroxy-ethyl)-piperazine-1-carbonyl]-pyridin-2-ylamino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (100 mg, 48%)的产率得到7-cyclopentyl-2-{5-[4-(2-hydroxy-ethyl)-piperazine-1-carbonyl]-pyridin-2-ylamino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide