光气 、
1-ethyl-3-{5'-(hydrazinylcarbonyl)-2'-(tetrahydro-2H-pyran-4-ylmethoxy)-4-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-6-yl}urea 在
crude compound 、
乙醚 、
正戊烷 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以to afford 200 mg (48%) of 1-ethyl-3-{5′-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-2′-(tetrahydro-2H-pyran-4-ylmethoxy)-4-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3′-bipyridin-6-yl}urea的产率得到1-ethyl-3-{5'-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-2'-(tetrahydro-2H-pyran-4-ylmethoxy)-4-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-6-yl}urea