2-chloro-7-cyclobutyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide 、
3-(6-aminopyridine-3-carbonyl)-3,8-diazabicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester 以to give 3-[6-(7-Cyclobutyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridine-3-carbonyl]-3,8-diaza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (218 mg, 50% yield)的产率得到3-[6-(7-Cyclobutyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridine-3-carbonyl]-3,8-diaza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester