An Expeditious Method for the First Asymmetric Synthesis of Dexoxadrol from the Chiral Pool
作者:María Díaz-de-Villegas、José Gálvez、Pablo Etayo、Ramón Badorrey、Pilar López-Ram-de-Víu
DOI:10.1055/s-0030-1258110
日期:2010.7
high-yielding methodology for the asymmetric synthesis of 2-(1,3-dioxolan-4-yl)piperidines is described. This approach involves a highly stereoselective addition of vinylmagnesium bromide to N-(3-butenyl)imines derived from D-glyceraldehyde diphenyl ketal and a ring-closing metathesis reaction as key steps. This procedure was used for the first asymmetric synthesis of (S)-2-[(S)-2,2-diphenyl-1,3-di
描述了一种用于不对称合成 2-(1,3-dioxolan-4-yl) 哌啶的新的、直接且高产的方法。该方法涉及将乙烯基溴化镁高度立体选择性地添加到衍生自 D-甘油醛二苯缩酮的 N-(3-丁烯基) 亚胺中,并将闭环复分解反应作为关键步骤。该程序用于第一次不对称合成 (S)-2-[(S)-2,2-diphenyl-1,3-dioxolan-4-yl]piperidine (dexoxolan-4-yl) 哌啶 (dexoxadrol),从方便保护的 D-甘露醇开始,在六个以 43% 的总收益率前进。