申请人:TAIHO PHARMACEUTICAL COMPANY, LIMITED
公开号:EP0842942A1
公开(公告)日:1998-05-20
The present invention relates to D-pentofuranose derivatives represented by the following formulas (1) through (4):
(wherein A represents a chlorobenzoyl group; R1 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.
These compounds are useful as intermediates in the synthesis of 3'-C-substituted ribonucleoside derivatives having excellent antitumor activities.
本发明涉及由下式(1)至(4)代表的D-戊呋喃糖衍生物:
(其中A代表氯代苯甲酰基;R1代表氢原子、脂肪族低级酰基、取代或未取代的苯甲酰基;X和Y各自代表低级烷基;Z代表乙炔基或三低级烷基硅烷基乙炔基;式(1)中的糖基代表木糖;式(3)和(4)各自的糖基代表核糖)。本发明还涉及一种制备化合物(2)的工艺,其特征是在催化量的 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。
这些化合物可作为合成 3'-C 取代的核糖核苷衍生物的中间体,具有优异的抗肿瘤活性。