作者:Pavel Kočovský、Irena Stieborová
DOI:10.1016/s0040-4039(01)80714-0
日期:1989.1
A 16-step synthesis of strophanthidin () from a commercially available steroid is described. Salient features of this approach are the selective reduction of the dienone system in to give and a one-pot introduction of 5β- and 14β-hydroxyls by addition of HOBR (). The stereo- and regioselectivity of the HOBr addition to the 5,6-double bond is controlled by 19-formyloxy group.
描述了由可商购的类固醇16步合成strophanthidin()。该方法的显着特征是选择性还原二烯酮体系,并通过添加HOBR(一锅)引入5β-和14β-羟基。HOBr加到5,6-双键上的立体和区域选择性由19-甲酰氧基控制。