Synthesis of (±)-Emtricitabine and (±)-Lamivudine by Chlorotrimethylsilane–Sodium Iodide-Promoted Vorbrüggen Glycosylation
作者:Sarah Jane Mear、Long V. Nguyen、Ashley J. Rochford、Timothy F. Jamison
DOI:10.1021/acs.joc.1c02772
日期:2022.3.4
By simple combination of water and sodium iodide (NaI) with chlorotrimethylsilane (TMSCl), promotion of a Vorbrüggen glycosylation en route to essential HIV drugs emtricitabine (FTC) and lamivudine (3TC) is achieved. TMSCl–NaI in wet solvent (0.1 M water) activates a 1,3-oxathiolanyl acetate donor for N-glycosylation of silylated cytosine derivatives, leading to cis-oxathiolane products with up to
通过将水和碘化钠 (NaI) 与三甲基氯硅烷 (TMSCl) 简单结合,可以在生产 HIV 基本药物恩曲他滨 (FTC) 和拉米夫定 (3TC) 的途中促进 Vorbrüggen 糖基化。湿溶剂(0.1 M 水)中的 TMSCl–NaI 激活 1,3-氧杂硫杂环戊酯供体,用于甲硅烷基化胞嘧啶衍生物的N-糖基化,从而产生高达 95% 的产率和 >20:1 dr的顺式-氧杂硫杂环戊烷产物。该伸缩序列之后是重结晶和硼氢化物还原,导致从酒石酸二酯快速合成 (±)-FTC/3TC。