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    • 3. 发明申请
    • 3'-OXIMINO-2',3'-DIDEOXYNUCLEOSIDES AND DERIVATIVES OF THE SAME
    • 3'-氧亚氨基-2',3'-二脱氧核苷酸及其衍生物
    • WO1997049717A1
    • 1997-12-31
    • PCT/RU1997000201
    • 1997-06-24
    • FEDOROV, Ivan IgorevichGOSSELIN, GillesDE CLERCQ, EricBALZARINI, JanSOMMADOSSI, Jean-PierreIMBACH, Jean-LouisKAZMINA, Ema MaximovnaARZAMASTSEV, Alexandr PavlovichGURSKAYA, Galina ViktorovnaYASKO, Maxim VladimirovichFARAJ, Abdesslem
    • C07H19/073
    • C07H19/04Y02P20/55
    • The present invention relates to new 3'-oximino-2',3'-dideoxynucleoside derivatives corresponding to formula (I) where B is substituted or unsubstituted thymin-1-yl, uracyl-1-yl, cytosin-1-yl, adenin-9-yl or guanin-9-yl and R is C1-C6 alkyl or C1-C6 acyl. This invention may be used to produce substances of this class having an increased activity. The 3'-oximino-2',3'-dideoxynucleosides are synthesised from naturally occurring nucleosides that contain a 2-deoxyribofuranose as their hydrocarbon compound. The position 5' of said 2-deoxyribofuranose is protected by a monomethoxytrityl, dimethoxytrityl or tributyldimethylsilyl group. The hydroxyl group is then oxidised at position 3' in the keto-group using an oxidiser such as pyridine dichromate or a Dess-Martin reagent, and further oximised in situ (hydroxylamine hydrochloride in pyridine) before suppressing the protecting group at position 5', the yield ranging from 30 to 70 %. Virological tests showed that 3'-oximino-2',3'-dideoxynucleosides and more precisely 3'-oximino-2',3'-dideoxythymidine are active against the human immunodeficiency virus (HIV), the B hepatitis virus and the herpes simplex virus (HSV). These compounds show anti-HIV activity in cells deficient in thymidinekynase, as well as an activity against HSV strains deficient in thymidinekynase.
    • 本发明涉及对应于式(I)的新的3'-肟基-2',3'-二脱氧核苷衍生物,其中B为取代或未取代的甲氨基-1-基,尿嘧啶-1-基,胞嘧啶-1-基,腺嘌呤 -9-基或guanin-9-基,R是C 1 -C 6烷基或C 1 -C 6酰基。 本发明可用于产生具有增加活性的该类物质。 3'-肟基-2',3'-二脱氧核苷由天然存在的含有2-脱氧呋喃核糖作为其烃化合物的核苷合成。 所述2-脱氧呋喃核糖的位置5'由单甲氧基三苯甲基,二甲氧基三苯甲基或三丁基二甲基甲硅烷基保护。 然后使用氧化剂如吡啶重铬酸盐或Dess-Martin试剂将羟基在酮基的3'位置进行氧化,并在抑制位置5'处的保护基之前,进一步进行原位氧化(吡啶中的盐酸羟胺) 产量从30%到70%不等。 病毒学检测显示,3'-肟基-2',3'-二脱氧核苷和3'-肟基-2',3'-二脱氧胸苷对人免疫缺陷病毒(HIV),B型肝炎病毒和单纯疱疹病毒 病毒(HSV)。 这些化合物在胸苷激酶缺乏的细胞中显示抗HIV活性,以及​​针对缺乏胸苷激酶的HSV毒株的活性。