Enantio- and Diastereoselective Syntheses of 3-Hydroxypiperidines through Iridium-Catalyzed Allylic Substitution
作者:Johannes Hoecker、Georg C. Rudolf、Florian Bächle、Steffen Fleischer、Benjamin D. Lindner、Günter Helmchen
DOI:10.1002/ejoc.201300445
日期:2013.8
Stereoselective syntheses of 3-hydroxypiperidines have been developed. Key intermediates are N-protected allylamines that are prepared by an enantioselective iridium-catalyzed allylic amination. A subsequent catch and release procedure that involves an epoxidation and base-mediated elimination yields δ-lactams that are suitably functionalized to prepare biologically active 3-hydroxypiperidines. In addition
已经开发了 3-羟基哌啶的立体选择性合成。关键中间体是通过对映选择性铱催化的烯丙胺化反应制备的 N 保护的烯丙胺。随后的捕获和释放程序涉及环氧化和碱介导的消除,产生 δ-内酰胺,其被适当地官能化以制备具有生物活性的 3-羟基哌啶。此外,还描述了该方法在脱氧甘露野尻霉素、D-赤型鞘氨醇和对药物化学感兴趣的手性构件的全合成中的应用。