Highly Stereoselective Synthesis of 2′-Deoxy-<i>α</i>-ribonucleosides and 2-Deoxy-<i>α</i>-C-ribofuranosides by Remote Stereocontrolled Glycosylation
作者:Teruaki Mukaiyama、Tatsuya Ishikawa、Hiromi Uchiro
DOI:10.1246/cl.1997.389
日期:1997.4
A new and efficient method for catalytic highly α-selective N- and C-glycosylations of 2-deoxyribose derivative with various trimethylsilylated nucleophiles was successfully developed by utilizing effective remote stereocontrol with 5-O-diethylthio carbamoyl directing group. Several 2′-deoxy-α-ribonucleosides and precursors of its C-analogues were prepared in good yields with high stereoselectivities.
通过利用 5-O-diethylthio carbamoyl 指导基团进行有效的远程立体控制,成功地开发了一种新的高效方法,用于催化 2-脱氧核糖衍生物与各种三甲基硅烷化亲核物进行高 α 选择性 N-和 C-糖基化反应。制备出了几种 2′-脱氧-α-核苷及其 C-类似物的前体,产量高,立体选择性强。