作者:Haibing Guo、George A. O'Doherty
DOI:10.1016/j.tet.2007.10.109
日期:2008.1
A highly enantioselective and stereocontrolled approach to d-, l- and 8-epi-d-swainsonine has been developed from achiral furan and γ-butyrolactone. A one-pot hydrogenolysis of both azide and benzyl ether followed by an intramolecular reductive amination has been employed as key step to establish the indolizidine ring system. The absolute stereochemistry was installed by the Noyori reduction and the
从非手性呋喃和 γ-丁内酯开发了一种高度对映选择性和立体控制的方法来制备 d-、l- 和 8-表-d-苦马豆素。叠氮化物和苄基醚的一锅氢解,然后进行分子内还原胺化,已被用作建立吲哚里西啶环体系的关键步骤。通过 Noyori 还原建立绝对立体化学,通过使用几种高度非对映选择性钯催化糖基化、Luche 还原、二羟基化和钯催化叠氮烯丙基化反应建立相对立体化学。这种实用方法通过 13 个步骤提供了数克量的吲哚里西啶天然产物 d-苦马豆素,总产率为 25%。