Tert-butyl 4-({6'-[(ethylcarbamoyl)amino]-5-(hydrazinylcarbonyl)-4'-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-2-yl}oxy)piperidine-1-carboxylate   、                                                                                      
光气                                                                                                                                                              在
                                                                                                                                                                                 ethyl acetate pet ether                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以to afford 0.2 g (64.9%) of tert-butyl 4-({6′-[(ethylcarbamoyl)amino]-5-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4′-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3′-bipyridin-2-yl}oxy)piperidine-1-carboxylate的产率得到tert-butyl 4-({6'-[(ethylcarbamoyl)amino]-5-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4'-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-2-yl}oxy)piperidine-1-carboxylate