(1'S,3'S,8'R,11'S,12'S,15'S,16'S,18'R)-18'-(4-methoxyphenyl)-5,5,16'-trimethylspiro[1,3-dioxane-2,6'-2-oxapentacyclo[9.7.0.01,3.03,8.012,16]octadecane]-8',15'-diol 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
反应 16.0h,
以93.3%的产率得到(5'R,10'R,11'R,13'S,14'S,17'S)-11'-(4-methoxyphenyl)-5,5,13'-trimethylspiro[1,3-dioxane-2,3'-2,4,6,7,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene]-5',10',17'-triol