4-(3,5-bis(trifluoromethyl)phenylamino)-2-(methylthio)pyrido[4,3-d]pyrimidin-5(6H)-one   、                                                                                      
反式-1,2-环己二胺                                                                                                                                                              在
                                                                                                                                                                                 
2-((1R,2R)-2-aminocyclohexylamino)-4-(3,5-bis(trifluoromethyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one                                                                                                                                  作用下,
                                                                                                                                                                                                                            以yielded the title compound, 2-((1R,2R)-2-aminocyclohexylamino)-4-(3,5-bis(trifluoromethyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one的产率得到2-((1R,2R)-2-aminocyclohexylamino)-4-(3,5-bis(trifluoromethyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one