The four possible isomers of C-1,2 ketols in the 17β-hydroxy-A-nor-5β-androstane series have been prepared and their rearrangements under various conditions examined. The stabilities are found to be in the order of the 2α-hydroxy-1-ketone (IIIa) > the 2β-hydroxy-1-ketone (IIa) > the 1β-hydroxy-2-ketone (Ia) > the 1α-hydroxy-2-ketone (XIIIa), and the results are discussed. Furthermore, the four A-nor-5β-androstane-1
已经制备了17β-羟基-A-nor-
5β-雄烷烷系列中C-1,2酮醇的四种可能的异构体,并研究了它们在各种条件下的重排。发现稳定性按以下顺序排列:2α-羟基-1-酮(IIIa)>2β-羟基-1-酮(IIa)>1β-羟基-2-酮(Ia)>1α-羟基-2-酮(XIIIa),并讨论了结果。此外,结合酮醇的结构阐明,已经制备了在C-1,2的差向异构体的四种A-nor-
5β-雄烷-1,2,17β-三醇。