p-(phenylethynyl)benzoylmethylidenetriphenylphosphorane 、 11-[(7'S,8'R,9'S,13'S,14'S)-3'-methoxy-5,5,13'-trimethyl-6'-oxospiro[1,3-dioxane-2,17'-7,8,9,11,12,14,15,16-octahydrocyclopenta[a]phenanthrene]-7'-yl]undecanal 在
苯甲酸 作用下,
以
苯 为溶剂,
反应 15.0h,
以51%的产率得到7α-[12-(phenylethynylbenzoyl)dodec-11-enyl]-17,17-(2,2-dimethylpropane-1,3-diyldioxy)-3-O-methylestra-1,3,5(10)-triene