Enantioselective Synthesis of (+)-l-733,060 and (+)-CP-99,994: Application of an Ireland-Claisen Rearrangement/Michael Addition Domino Sequence
作者:Narciso Garrido、Mercedes García、M. Sánchez、David Díez、Julio Urones
DOI:10.1055/s-0029-1219200
日期:2010.2
An efficient asymmetric synthesis of (+)-l-733,060, (-)-(2S,3R)-1 and (+)-CP-99,994, starting from a Baylis-Hillman adduct, is described. The key steps include a novel domino reaction: stereoselective Ireland-Claisen rearrangement, asymmetric Michael addition, and piperidone ring formation through a one-pot reaction hydrogenolysis/lactamization and a stereoselective inversion of a hydroxy group.
描述了一种高效的非对称合成(+)-l-733,060、(-)-(2S,3R)-1和(+)-CP-99,994的方法,起始于Baylis-Hillman加成物。关键步骤包括一个新颖的多重反应:立体选择性爱尔兰-克莱森重排、非对称迈克尔加成,以及通过一锅法反应的氢解/内酰胺化和羟基的立体选择性反转形成哌啶酮环。