cis-4a-cisoid-4a,4b-trans-4b-(tert-butyldimethylsilyloxy)-1,4,4a,4b,5,6,7,8,8a,9,10,10a-dodecahydro-2,4b-dimethyl-10-oxophenanthrene-10a-carbaldehyde 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
反应 0.08h,
以73%的产率得到cis-4a-cisoid-4a,4b-trans-4b-3-(tert-butyldimethylsilyloxy)-1,4,4a,4b,5,6,7,8,8a,10,10a-dodecahydro-2,4b-dimethylphenanthrene-10-one