Synthesis of 5-/8-Halogenated or Ethynylated Lipophilic Nucleobases as Potential Synthetic Intermediates for Supramolecular Chemistry
作者:Nerea Bilbao、Violeta Vázquez-González、M. Teresa Aranda、David González-Rodríguez
DOI:10.1002/ejoc.201501026
日期:2015.11
A series of lipophilic nucleobases that are substituted at the 5- (pyrimidines) or 8- (purines) position with either a halogen atom or a terminal triple bond have been synthesized. The sequences and reactions studied in this work, which mainly comprise halogenation, alkylation, Sonogashira coupling, and trimethylsilylacetylene deprotection, have been carefully optimized, to reach the final compounds
已经合成了一系列在 5-(嘧啶)或 8-(嘌呤)位置被卤素原子或末端三键取代的亲脂性核碱基。在这项工作中研究的序列和反应,主要包括卤化、烷基化、Sonogashira 偶联和三甲基甲硅烷基乙炔脱保护,经过精心优化,以最直接、最方便的方式获得最终化合物,并具有尽可能高的纯度和收率。这些化合物包括作为嘧啶杂环的胞嘧啶、异胞嘧啶和尿嘧啶衍生物,以及作为互补嘌呤碱基的鸟嘌呤、异鸟嘌呤和 2-氨基腺嘌呤衍生物。在这些用烷基或苄基官能化的嘧啶/嘌呤核碱基的 N-1/N-9 位置引入了可变性,以及受保护的胺或羧酸取代基。所制备的分子构成了化学自组装领域有用的合成中间体集合。