Practical and highly stereoselective approaches to the total synthesis of (−)-codonopsinine
作者:Srivari Chandrasekhar、Birudaraju Saritha、Vannada Jagadeshwar、Samala Jaya Prakash
DOI:10.1016/j.tetasy.2006.05.007
日期:2006.5
The enantiopure total synthesis of (−)-codonopsinine is described using two effective chiron approaches starting either from commercially available l-xylose or from readily available Garner aldehyde. The key steps included Julia trans-olefination, highly diastereoselective alkylation and cascade epoxidation–cyclization strategies.
使用两种有效的卡隆方法描述了对映纯的(-)-codonopsinine的全合成方法,该方法从商业上可获得的1-木糖或现成的Garner醛开始。关键步骤包括朱莉娅(Julia)反烯烃,高度非对映选择性烷基化和级联环氧化-环化策略。