tert-butyl [cis-4-({[5-fluoro-2-(tetrahydro-2H-thiopyran-4-ylamino)pyridin-3-yl]carbonyl}amino)cyclohexyl]carbamate   、                                                                                      
N,N'-羰基二咪唑                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N-甲基吡咯烷酮                                                                                  为溶剂,
                                                                                                                                                    反应 49.0h,
                                                                                                                以48%的产率得到tert-butyl {cis-4-[6-fluoro-2,4-dioxo-1-(tetrahydro-2H-thiopyran-4-yl)-1,4-dihydropyrido[2,3-d]pyrimidin-3(2H)-yl]cyclohexyl}carbamate