Novel and Flexible Entries into Prostaglandins and Analogues Based on Ring Closing Alkyne Metathesis or Alkyne Cross Metathesis
作者:Alois Fürstner、Karol Grela、Christian Mathes、Christian W. Lehmann
DOI:10.1021/ja003119g
日期:2000.12.1
allows one to make a series of analogues starting from these common platforms, (iii) a small number of steps, and (iv) an excellent overall yield. The key alkyne metathesis reactions are efficiently catalyzed either by the tungsten alkylidyne complex (t-BuO)3W⋮CCMe3 or, preferentially, by a catalyst formed in situ from Mo[N(t-Bu)(Ar)]3 and CH2Cl2, the reactivity of which can be...
适当官能化的环戊酮衍生物 12、13、19 和 37 作为合成各种前列腺素、前列腺素-1,15-内酯及其非天然类似物的常见前体。它们都包含一个 2-丁炔基实体,该实体通过包含闭环炔烃复分解/Lindlar 还原或通过炔烃交叉复分解 (ACM)/Lindlar 还原的序列加工成目标的完整 α 侧链。这些新方法的特点是 (i) 通过三组分偶联反应可随时获得所需的环戊烯酮底物,(ii) 固有的灵活性,允许从这些通用平台开始制造一系列类似物,(iii)步骤数少,以及 (iv) 出色的总产率。