Synthesis of Phenol and Pyridone C-Ribo- and 2′-Deoxyribonucleosides by Palladium-Catalyzed Hydroxylations of Haloaryl C-Nucleosides
作者:Michal Hocek、Martin Štefko
DOI:10.1055/s-0030-1258318
日期:2010.12
Phenol and pyridone C-nucleosides in both ribo- and deoxyribo series were prepared by palladium-catalyzed hydroxylations reactions from the corresponding TBS-protected bromophenyl and bromo- or chloropyridyl C-nucleosides using Buchwald-type ligand under mild conditions. Partial or complete desilylation of 5′-OH was observed in some cases. Free nucleosides (7 examples) were obtained in good overall
核糖和脱氧核糖系列中的苯酚和吡啶酮C-核苷是由钯催化的羟基化反应,由相应的TBS保护的溴苯基和溴或氯吡啶基C-核苷在温和条件下使用Buchwald型配体制备的。在某些情况下,观察到5'-OH的部分或完全甲硅烷基化。游离核苷(7个实施例)在由TBS保护基团用Et切割好的总产率得到3 N˙3HF。 C-核苷-钯催化-羟基化-苯酚-吡啶酮