Expedient synthesis of α,α-dimethyl-β-hydroxy carbonyl scaffolds via Evans’ aldol reaction with a tertiary enolate
作者:Joshawna K. Nunnery、Takashi L. Suyama、Roger G. Linington、William H. Gerwick
DOI:10.1016/j.tetlet.2011.03.126
日期:2011.6
(DHOYA) and several variants, which are increasingly common fragments encountered in bioactive marine cyanobacterial metabolites, was developed. These fragments were obtained in three steps via a tertiary aldol reaction utilizing an Evans’ chiral auxiliary to afford the desired stereochemistry at the β-hydroxy carbon. Thus far, this methodology has been successfully applied in determination of the absolute
开发了 3-羟基-2,2-二甲基辛酸 (DHOYA) 和几种变体的有效合成方法,这些变体是生物活性海洋蓝藻代谢物中越来越常见的片段。这些片段是通过叔醛醇反应分三步获得的,该反应利用埃文斯手性助剂在 β-羟基碳上提供所需的立体化学。迄今为止,该方法已成功应用于测定八种蓝藻天然产物的绝对立体化学,包括 VGSC 活化剂 palymramide A。