Synthesis of 3-fluoro-6-S-(2-S-pyridyl) nucleosides as potential lead cytostatic agents
作者:Evangelia Tsoukala、Niki Tzioumaki、Stella Manta、Alexandra Riga、Jan Balzarini、Dimitri Komiotis
DOI:10.1016/j.bioorg.2010.08.001
日期:2010.12
were prepared via two facile synthetic routes. Their precursors, 3-fluoro-6-thio-glucopyranosyl nucleosides 5a-e, were obtained by the sequence of deacetylation of 3-deoxy-3-fluoro-β-d-glucopyranosyl nucleosides 2a-e, selective tosylation of the primary OH of 3 and finally treatment with potassium thioacetate. The desired thiolpyridine protected analogs 7a-c,f,g were obtained by the sequence of deacetylation
3-脱氧-3-氟-6-小号- (2-小号吡啶基)-6-硫代β - d吡喃葡萄糖基的核苷类似物7制备通过2条容易合成路线。它们的前体,3-氟-6-硫代-吡喃葡萄糖基核苷5a - e,是通过 3-脱氧-3-氟-β - d-吡喃葡萄糖基核苷2a - e的脱乙酰化序列,选择性甲苯磺酰化的初级 OH 获得的。3最后用硫代乙酸钾处理。所需的硫醇吡啶保护的类似物7a - c,˚F,克由脱乙酰的序列获得5A - Ç随后thiopyridinylation和/或与新合成的全乙酰-6-相应杂环碱缩合小号- (2-小号吡啶基)糖前体13,其中获得通过从糖基供体12的新合成路线。化合物6和7均不显示抗病毒活性,但5-氟尿嘧啶衍生物7c,尤其是尿嘧啶衍生物7b 被赋予了对多种鼠类和人肿瘤细胞培养物的有趣且选择性的细胞抑制作用。