Highly Diastereoselective Synthesis of (2'S)-[2'-2H]-2'-Deoxyribonucleosides from the Corresponding Ribonucleosides
作者:Etsuko Kawashima、Yukio Aoyama、Mohamed Radwan、Masayoshi Miyahara、Takeshi Sekine、Masatsune Kainosho、Yoshimasa Kyogoku、Yoshiharu Ishido
DOI:10.1080/15257779508012375
日期:1995.5.1
Abstract The four (2′S)-[2′-2H]-2′-deoxynucleosides (>90 atom % 2H), were synthesized from the corresponding ribonucleosides involving six steps of reactions, i.e., oxidation of their 2′-hydroxyl group, stereoselective reductive deuteration of the resulting 2′-ketonucleoside intermediates with NaB2H4 in EtOH-H2O or EtOH, triflation, bromination with LiBr, highly stereoselective Bu3SnH-Et3B reduction
摘要从相应的核糖核苷合成了四个(2'S)-[2'-2H] -2'-脱氧核苷(> 90原子%2H),涉及六个反应步骤,即2'-羟基的氧化,在EtOH-H2O或EtOH中用NaB2H4对所得2'-酮核苷中间体进行立体选择性还原氘化,三氟甲磺酸酯化,用LiBr溴化,高度立体选择性Bu3SnH-Et3B还原所得溴化物,最后进行掩蔽。