申请人:TAIHO PHARMACEUTICAL CO., LTD.
公开号:EP0747389A1
公开(公告)日:1996-12-11
The invention relates to a 3'-substituted nucleoside derivative represented by the following general formula (1):
wherein B means a nucleic acid base which may have a substituent, Z represents a lower alkynyl or lower alkenyl group which may be substituted by a group represented by the formula:
in which Ra, Rb and Rc are individually a lower alkyl group or a phenyl group, or an oxiranyl group which may have at least one lower alkyl group, R1 and R2 individually represent H or an ester-forming residue capable of easily leaving in a living body, and R3 is H, a mono- or polyphosphoric acid residue, or an ester-forming residue capable of easily leaving in a living body, with the proviso that the sugar moiety is ribose, or a pharmaceutically acceptable salt thereof. The 3'-substituted nucleoside derivative according to the invention has an excellent antitumor activity and is hence useful for treatment for and prevention of cancers.
本发明涉及由以下通式(1)代表的 3'-取代的核苷衍生物:
其中 B 表示可具有取代基的核酸碱基,Z 表示可被式中代表的基团取代的低级炔基或低级烯基:
其中,Ra、Rb 和 Rc 分别为低级烷基或苯基,或可具有至少一个低级烷基的环氧乙烷基,R1 和 R2 分别代表 H 或可容易地留在生物体内的酯形成残基,R3 为 H、单磷酸或多磷酸残基或可容易地留在生物体内的酯形成残基,但糖基为核糖或其药学上可接受的盐。根据本发明,3'-取代的核苷衍生物具有优异的抗肿瘤活性,因此可用于治疗和预防癌症。