Irradiation of 3,3-ethylenedioxy-20-keto-21-acetoxy-Δ5-pregnene (I) in ethanolic solution leads to the formation of 3,3-ethylenedioxy-18,20-oxido-20ξ-hydroxy-21-acetoxy-Δ5-pregnene (II) and 3, 3-ethylenedioxy-20ξ-hydroxy-21-acetoxy-Δ5-18,20-cyclo-pregnene (IV).
的3,3-亚乙二氧基-20酮-21-乙酰氧基- Δ照射5 -pregnene(I)在
乙醇溶液中导致3,3-亚乙二氧基-18,20-二可氧化20ξ羟基-21-乙酰氧基的形成-Δ 5 -pregnene(II)和3,3-亚乙二氧基-20 -羟基-21-乙酰氧基- Δ 5 -18,20 -环孕烯(IV)。