[1'(2)R,2'R,4'aS,6'R,8'aS]-6'-hydroxy-7-cyano-3',4',4'a,5',6',7',8',8'a-octahydro-2',5',5',8'a-tetramethylspiro[benzofuran-2(3H),1'(2'H)-naphthalene]-6-carboxylic acid methyl ester 在
platinum(IV) oxide 氢气 、
sodium hydroxide 作用下,
以
乙醇 、
氯仿 、
水 为溶剂,
以85%的产率得到[1'(2)R,2'R,4'aS,6'R,8'aS]-4,6'-dihydroxy-3',4',4'a,5',6',7,7',8,8',8'a-decahydro-2',5',5',8'a-tetramethylspiro[2H-furo(2,3-e)isoindole-2,1'(2'H)-naphthalen]-6(3H)-one