6-(5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-5-hydroxy-3,4-diphenylthieno[2,3-c]pyridazine 、 alkaline earth salt of/the/ methylsulfuric acid 在
potassium hydroxide 作用下,
生成 5-benzyloxy-6-(5-benzylsulfanyl[1,3,4]oxadiazol-2-yl)-3,4-diphenylthieno[2,3-c]pyridazine