(2S,3a'R,4S,4'S,5R,5a'R,6'S,8a'S,8b'S)-4'-hydroxy-3a',4,6'-tris((2-methoxyethoxy)methoxy)-5-methyldodecahydro-3'H-spiro[pyran-2,2'-thieno[3,2-g]benzofuran]-3'-one 在
sodium formate 作用下,
以
四氢呋喃 、
水 为溶剂,
以92%的产率得到(2S,3a'R,4S,4'S,5R,5a'R,6'S,8a'S,8b'S)-4'-hydroxy-3a',4,6'-tris((2-methoxyethoxy)methoxy)-5-methyldodecahydro-3'H-spiro[pyran-2,2'-thieno[3,2-g]benzofuran]-3'-one