Total Synthesis of (+)-Batzelladine A and (−)-Batzelladine D via [4 + 2]-Annulation of Vinyl Carbodiimides with <i>N</i>-Alkyl Imines
作者:Michael A. Arnold、Kenneth A. Day、Sergio G. Durón、David Y. Gin
DOI:10.1021/ja063860+
日期:2006.10.1
this strategy, together with additional key steps such as long-range directed hydrogenation and diastereoselective intramolecular iodo-amination, led to highly convergent total syntheses of (-)-batzelladineD and (+)-batzelladine A with excellent stereocontrol.
已经开发出乙烯基碳二亚胺与手性 N-烷基亚胺的非对映选择性 [4 + 2]-环化,以获取 batzelladine 生物碱的立体化学丰富的多环胍核。该策略的应用,连同其他关键步骤,如远程定向氢化和非对映选择性分子内碘胺化,导致 (-)-batzelladine D 和 (+)-batzelladine A 的高度收敛全合成具有出色的立体控制。
Diastereoselective [4+2] Annulation of Vinyl Carbodiimides with <i>N</i>-Alkyl Imines. Asymmetric Synthetic Access to the Batzelladine Alkaloids
作者:Michael A. Arnold、Sergio G. Durón、David Y. Gin
DOI:10.1021/ja0519029
日期:2005.5.1
diastereoselective [4+2] annulation of vinyl carbodiimides with chiral N-alkyl imines has been developed to access the stereochemically rich tricyclic core of the batzelladine alkaloids. Its application to the asymmetric synthesis of batzelladine D permitted the use of long-range, directed hydrogenation and stereoselective intramolecular iodoamination as additional key steps to establish the remaining stereocenters
已经开发出乙烯基碳二亚胺与手性 N-烷基亚胺的非对映选择性 [4+2] 环化,以获取巴泽拉定生物碱的立体化学丰富的三环核心。其在 batzelladine D 的不对称合成中的应用允许使用长程、定向氢化和立体选择性分子内碘胺化作为额外的关键步骤,以在具有出色立体控制的天然产物中建立剩余的立体中心。