(+)-(3aR,8bS,2'S)-3-[(E)-2',5'-dihydro-4'-methyl-5'-oxo-2'-furanyloxymethylene]-4-oxo-8,8-dimethyl-3,3a,4,5,6,7,8,8b-octahydroindeno[1,2-b]furan-2-one 在
sodium tetrahydroborate 、 cerium(III) chloride 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以8.3%的产率得到(+)-(3aR,4R,8bS,2'S)-3-[(E)-2',5'-dihydro-4'-methyl-5'-oxo-2'-furanyloxymethylene]-4-hydroxy-8,8-dimethyl-3,3a,4,5,6,7,8,8b-octahydroindeno[1,2-b]furan-2-one