D-pentofuranose derivatives and process for preparing the same
    4.
    发明授权
    D-pentofuranose derivatives and process for preparing the same 失效
    D-呋喃糖衍生物及其制备方法

    公开(公告)号:US5880294A

    公开(公告)日:1999-03-09

    申请号:US981814

    申请日:1998-01-06

    CPC分类号: C07H9/04 C07H13/04 C07H19/04

    摘要: The present invention relates to D-pentofuranose derivatives represented by the following formulas (1) through (4): ##STR1## (wherein A represents a chlorobenzoyl group; R.sup.1 represents a hydrogen atom, an aliphatic lower acyl group, a substituted or unsubstituted benzoyl group; each of X and Y represents a lower alkyl group; Z represents an ethynyl group or tri-lower alkyl silylethynyl group; the sugar moiety in formula (1) represents xylose; and the sugar moiety of each of formulas (3) and (4) represents ribose). The present invention also relates to a process for preparing the compound (2) characterized by oxidizing the compound of formula (1) with a hypochlorite in the presence of a catalytic amount of 2,2,6,6-tetramethylpiperidinoxy compound, and these compounds are useful as intermediates in the synthesis of 3'-C-substituted ribonucleoside derivatives having excellent antitumor activities.

    摘要翻译: PCT No.PCT / JP97 / 01427 Sec。 371日期:1998年1月6日 102(e)日期1998年1月6日PCT 1997年4月24日PCT公布。 公开号WO97 / 43295 日期:1997年11月20日本发明涉及由下式(1)〜(4)表示的D-呋喃糖衍生物:< IMAGE>(2)< IMAGE>(3) )(其中A表示氯苯甲酰基; R1表示氢原子,脂肪族低级酰基,取代或未取代的苯甲酰基; X和Y各自表示低级烷基; Z表示乙炔基或三低级烷基甲硅烷基乙炔基 式(1)中的糖部分表示木糖;式(3)和(4)各自的糖部分表示核糖)。 本发明还涉及一种制备化合物(2)的方法,其特征在于在催化量的2,2,6,6-四甲基哌啶氧基化合物存在下,用次氯酸盐氧化式(1)化合物,这些化合物 可用作合成具有优异抗肿瘤活性的3'-取代核糖核苷衍生物的中间体。