Modular Synthesis of 5-Substituted Furan-2-yl C-2′-Deoxyribonucleosides and Biaryl Covalent Base-Pair Analogues
作者:Jan Bárta、Lenka Slavětínská、Blanka Klepetářová、Michal Hocek
DOI:10.1002/ejoc.201000726
日期:——
A modular and efficient synthesis of 5-(hetero)arylfuran C-2'-deoxyribonucleosides was developed. Friedel-Crafts C-glycosidation of 2-bromofuran with toluoyl-protected methyl 2'-deoxyribofuranoside in the presence of BF 3 ·Et 2 O gave 5-bromofuran C-nucleosides, which were used as key intermediates for Stille or Suzuki coupling with (hetero)arylstannanes or boronic acids to afford a series of 5-(hetero)arylfuran
开发了一种模块化和高效的 5-(杂) 芳基呋喃 C-2'-脱氧核糖核苷合成方法。在 BF 3 ·Et 2 O 存在下,2-溴呋喃与甲苯甲酰基保护的甲基 2'-脱氧呋喃核糖苷的 Friedel-Crafts C-糖苷化得到 5-溴呋喃 C-核苷,其用作 Stille 或 Suzuki 偶联的关键中间体 (杂)芳基锡烷或硼酸以提供一系列 5-(杂)芳基呋喃 C-核苷。5-硼呋喃 C-核苷通过溴呋喃与双(频哪醇二硼)的 Suzuki 偶联或通过 Ir 催化的呋喃 C-H 硼酸化制备,并用于与 5-溴杂芳基 C-核苷交叉偶联以提供新的共价类似物核苷对。标题 5-arylfuran C-nucleosides 具有有趣的荧光特性,可用于生物分子的荧光标记。