Utilization of Sequential Palladium-Catalyzed Cross-Coupling Reactions in the Stereospecific Synthesis of Trisubstituted Olefins
作者:Ioannis N. Houpis、Didier Shilds、Ulrike Nettekoven、Anita Schnyder、Erhart Bappert、Koen Weerts、Martine Canters、Wim Vermuelen
DOI:10.1021/op900015g
日期:2009.5.15
A stereospecific synthesis of the drug-candidate 1 is described. The synthetic sequence, aimed at accomplishing modularity and cost savings, features a series of organometallic steps to afford stereospecifically the desired trisubstituded olefin active pharmaceutical ingredient. Key developments consist of a mild Sonogashira reaction of aryl bromide 7a with the polymerization prone propargyl alcohol
描述了候选药物1的立体定向合成。旨在实现模块化和节省成本的合成步骤具有一系列有机金属步骤,可立体定向提供所需的三级烯烃活性药物成分。关键的发展包括芳基溴化物7a与易于聚合的炔丙醇的温和的Sonogashira反应,以及通过市售PEPPSI催化剂促进的立体有择的氢铝化,Zn / Al交换和Pd催化的交叉偶联序列。