(+-)-3-Ethylendioxy-14.15-epoxy-11β-hydroxy-16.18-dioxo-androst-5-en-18.11-cyclosemiacetal-acetat 在
palladium on activated charcoal 、 Lindlar's catalyst 、
乙醇 、
三乙胺 、 xylene 作用下,
生成
rac-(18Ξ)-3,3-ethanediyldioxy-18-benzoyloxy-11β,18-epoxy-14-hydroxy-14ξ-androst-5-en-16-one