6-(7-cyclopentyl-6-(dimethylcarbamoyl)-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)nicotinic acid 、 (1S,4S,5S)-2-azabicyclo[2.2.1]heptan-5-ol 、 以gave 7-cyclopentyl-2-(5-((1S,4S,5S)-5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carbonyl)pyridin-2-ylamino)-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide (40 mg, 63% yield)的产率得到7-cyclopentyl-2-(5-((1S,4S,5S)-5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carbonyl)pyridin-2-ylamino)-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide