2-chloro-7-cyclopentyl-N-methyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide 、
5-(6-aminopyridine-3-carbonyl)-(S,S)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester 以gave (1S,4S)-5-[6-(7-Cyclopentyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridine-3-carbonyl]-2,5-diaza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester as a yellow solid的产率得到(1S,4S)-5-[6-(7-cyclopentyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)pyridine-3-carbonyl]-2,5-diazabicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester