Two syntheses of the tricyclic carbon skeleton of pleuromutilin are reported. Diastereoselective 1,4-conjugate additions were used to elaborate bicyclic precursors at an early stage of each route, while ring-forming olefin metatheses were executed to complete the pleuromutilin carbon framework. The congeners prepared are appropriately functionalized to enable access to diverse pleuromutilin analogues.
报道了对Pleuromutilin
三环碳骨架的两种合成方法。在每条路线的早期阶段,采用了对映选择性1,4-加合反应来扩展双环前体,而环形成
烯烃复分解反应则被用于完成Pleuromutilin的
碳框架。所制备的同系物进行了适当的功能化,以便获取多样化的Pleuromutilin类药物。