1-(4-(4-(cyclobutylamino)-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)phenylsulfonyl)piperidin-4-ol 、
2-benzoxy-N-methyl-N-(4-aminophenyl)acetamide 、 以gave 2-benzyloxy N-(4-(4-(cyclobutylamino)-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)phenyl)-N-methylacetamide (MS calcd for C26H28N6O2 456.2, found [MH] 457.0)的产率得到2-benzyloxy N-(4-(4-(cyclobutylamino)-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)phenyl)-N-methylacetamide