Facile Synthesis of Plasmalogens via Barbier-Type Reactions of Vinyl Dioxanes and Vinyl Dioxolanes with Alkyl Halides in LiDBB Solution
作者:Junhwa Shin、Oleg Gerasimov、David H. Thompson
DOI:10.1021/jo025640u
日期:2002.9.1
sn-2 acyl substituent that easily migrates during silica gel purification. We report two facile synthetic methods for the preparation of racemic plasmenylcholines via a tandem reductive vinyl dioxane/dioxolane ring opening and alkyliodide coupling process that proceeds in a single pot reaction. The key step in the formation of (Z)-vinyl ether precursors for the production of plasmenylcholines is accomplished
血浆致病菌(即血浆胆碱或血浆乙醇胺)是一类重要的甘油磷脂,由于在sn-1位上存在酸和氧化不稳定的(Z)-乙烯基醚取代基以及对碱不稳定的sn-而难以合成2酰基取代基,在硅胶纯化过程中容易迁移。我们报告了通过串联还原乙烯基二恶烷/二氧戊环开环和烷基碘偶联过程在单个反应釜中进行反应而制备外消旋质体胆碱的两种简便的合成方法。在Barbier型条件下使用LiDBB完成形成(Z)-乙烯基醚前体以生产血浆胆碱的关键步骤,从而以中等收率得到相应的TBDMS保护的1-O-Z'-乙烯基甘油中间体。