7-cyclopentyl-2-(5-piperazin-1-ylmethyl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide 、
BOC-甘氨酸 以gave 2-{5-[4-(2-amino-acetyl)-piperazin-1-ylmethyl]-pyridin-2-ylamino}-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide as a white solid (87 mg, 69%)的产率得到2-{5-[4-(2-amino-acetyl)-piperazin-1-ylmethyl]-pyridin-2-ylamino}-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide