benzyl 4-(2-amino-6-hydroxypyrimidin-4-yl)piperidin-1-carboxylate   、                                                                                      
(R)-3-(N-BOC-N-甲氨基)吡咯烷                                                                                                                                                              在
                                                                                                                                                                                 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate   、                                                                                                  
三乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以79%的产率得到benzyl 4-(2-amino-6-((3R)-3-(tert-butoxycarbonyl(methyl)amino)pyrrolidin-1-yl)pyrimidin-4-yl)piperidin-1-carboxylate