2-chloro-7-cyclopentyl-N-methyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide 、
(1R,6S)-3-(6-aminopyridin-3-yl)-4-oxo-3,9-diazabicyclo[4.2.1]nonane-9-carboxylic acid tert-butyl ester 在
(1R,6S)-3-[6-(7-cyclopentyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl] 作用下,
以gave (1R,6S)-3-[6-(7-cyclopentyl-6-methylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl])-4-oxo-3,9-diaza-bicyclo[4.2.1]nonane-9-carboxylic acid tert-butyl ester (200 mg) in 78% yield的产率得到4-氧代-3,9-二氮杂双环[4.2.1]壬烷-9-羧酸叔丁酯