7,8-dihydro-6,6-dimethyl-7-hydroxy-8-(2-oxo-4-t-butyldimethylsilyloxy-1-piperidinyl)-6H-pyrano[2,3-f]benzo-2,1,3-oxadiazole 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以120 mg (81%)的产率得到7,8-dihydro-6,6-dimethyl-7-hydroxy-8-(2-oxo-4-hydroxy-1-piperidinyl)-6H-pyrano[2,3-f]benzo-2,1,3-oxadiazole