2-[3-({[tert-butyl-(dimethyl)silyl]oxy}methyl)phenyl]-4-morpholin-4-yl-5H-pyrrolo[3,2-d]pyrimidine   、                                                                                      
碘乙腈                                                                                                                                                                                                                                                                                                          以gave the intermediate 2-(2-(3-((tert-butyldimethylsilyoxy)methyl)phenyl)-4-morpholino-5H-pyrrolo[3,2-d]pyrimidin-5-yl)acetonitrile (353 mg, 76% yield, MS (ESI) m/z 464.3), which的产率得到2-(2-(3-((tert-butyldimethylsilyoxy)methyl)phenyl)-4-morpholino-5H-pyrrolo[3,2-d]pyrimidin-5-yl)acetonitrile