3-<7α-(acetylthio)-17β-hydroxy-15β,16β-methylene-3-oxoandrosta-4,11-dien-17α-yl>propionic acid γ-lactone 在
吡啶 、 selenium(IV) oxide 作用下,
以
叔丁醇 为溶剂,
以261 mg的产率得到3-<7α-(acetylthio)-17β-hydroxy-15β,16β-methylene-3-oxoandrosta-1,4,11-trien-17α-yl>propionic acid γ-lactone