representatives in the 3-oxo-1,4-diene series, the majority of which bears a methyl substituent at C(1), it is shown that both tri-n-butyltin hydride and tris(trimethylsilyl)silane promote C(9)C(10) bond cleavage in the presence of a radical-chain initiator to afford A-ring aromatic 9,10-secosteroids in moderate to good yield. A possible mechanism for this transformation is discussed.
对于在3-氧代-1,4-二烯系列9类
固醇的代表,其中大部分带有在C(1)甲基取代基,它被示出,这两个三Ñ -butyltin氢化和三(三甲基
硅烷基)
硅烷促进Ç (9)在自由基链
引发剂的存在下进行C(10)键裂解,以中等到良好的产率提供A环芳族9,10-secosteroids。讨论了这种转换的可能机制。