5-(2-chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidin-6-yl)oxazole 、
tert-butyl 4-((6-aminopyridin-3-yl)methyl)piperazine-1-carboxylate 以to give (7-cyclopentyl-6-oxazol-5-yl-7H-pyrrolo[2,3-d]pyrimidin-2-yl)-(5-piperazin-1-ylmethyl-pyridin-2-yl)-amine (23 mg, 15%)的产率得到(7-cyclopentyl-6-oxazol-5-yl-7H-pyrrolo[2,3-d]pyrimidin-2-yl)-(5-piperazin-1-ylmethyl-pyridin-2-yl)-amine