2-氯-7-环戊基-N,N-二甲基-7H-吡咯并[2,3-d]嘧啶-6-甲酰胺 、
4-(6-aminopyridin-3-yl)-2,2-dimethylpiperazine-1-carboxylic acid tert-butyl ester 以gave 7-cyclopentyl-2-[5-(3,3-dimethyl-piperazin-1-yl)-pyridin-2-ylamino]-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (20 mg, 25%)的产率得到7-cyclopentyl-2-[5-(3,3-dimethylpiperazin-1-yl)pyridin-2-ylamino]-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide