申请人:Ajinomoto Co., Inc.
公开号:US06090937A1
公开(公告)日:2000-07-18
Novel intermediates of nucleoside derivatives, of which the 6-position of the nucleic acid base moiety is substituted with a halogen atom, are produced. Using those novel intermediates, even substrates, of which the 3'-position of the saccharide moiety is deoxylated, can be substituted at the 2'-position at an extremely high yield. Specifically, by subjecting a 3'-deoxy derivative of inosine to 6-halogenation to give a 6-halide of the derivative, and then subjecting it to 2'-deoxylation/substitution with a fluorine atom or the like, followed by further subjecting it to substitution with an amino group, a hydroxyl group or any other intended substituent at the 6-positioned halogen atom, nucleoside derivatives are produced at a high yield. Methods for producing nucleoside derivatives including 9-(2,3-dideoxy-2-fluoro-.beta.-D-threo-pentofuranosyl)adenine (FddA) and their related compounds, in a simplified manner, at a high yield and at low costs, and especially Economical methods for substituting substrates, of which the 3'-position of the saccharide moiety is deoxylated, at the 2'-position to produce those nucleoside derivatives on an industrial scale are also provided.
生产新型核苷衍生物的中间体,其中核酸碱基部分的6位被卤素原子取代。利用这些新型中间体,即使脱氧糖苷部分的3'-位也可以以极高的产率在2'-位进行取代。具体来说,通过将肌苷的3'-脱氧衍生物经过6-卤化处理,得到该衍生物的6-卤化物,然后进行2'-脱氧化/以氟原子等进行取代,随后进一步进行6-位卤素原子处的氨基团、羟基或其他取代基的取代,可以高产率地生产核苷衍生物。提供了一种简化方式、高产率、低成本地生产包括9-(2,3-脱氧-2-氟-β-D-巯基-戊呋糖基)腺嘌呤(FddA)及其相关化合物的核苷衍生物的方法,特别是提供了一种经济的方法,用于在工业规模上取代脱氧糖苷部分的3'-位以在2'-位生产这些核苷衍生物。