7-cyclopentyl-2-(5-formyl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide 、
4-羟基哌啶 以gave 7-cyclopentyl-2-[5-(4-hydroxy-piperidin-1-ylmethyl)pyridin-2-ylamino]-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide的产率得到7-cyclopentyl-2-[5-(4-hydroxy-piperidin-1-ylmethyl)-pyridin-2-ylamino]-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide