甲酸乙酯 、 11β,18a-Epoxy-3-aethylendioxy-16-oxo-18a-methyl-18-homo-androstadien-(5,18) 在
sodium methylate 、
苯 作用下,
生成
rac-3,3-ethanediyldioxy-11β,18a-epoxy-18a-methyl-16-oxo-18-homo-14β-androsta-5,18-diene-17ξ-carbaldehyde 、
rac-3,3-ethanediyldioxy-11β,18a-epoxy-18a-methyl-16-oxo-18-homo-14β-androsta-5,18-diene-15ξ-carbaldehyde