The present invention is composed of a nucleoside derivative of the following general formula \x9bI!: ##STR1## (wherein B represents adenin-9-ylmethyl, guanin-9-ylmethyl, hypoxanthin-9-ylmethyl, thymin-1-ylmethyl, uracil-1-ylmethyl, or cytosin-1-ylmethyl; X and Y may be the same or different and each represents hydrogen or hydroxy, exclusive of the case in which X is hydrogen and Y is hydroxy). The compound of the present invention is useful as an antiviral agent or an antimalignant-tumoral agent.
本发明由以下一般式\ x9bI!的核苷酸衍
生物组成:##STR1##(其中B表示
腺嘌呤-9-基甲基,
鸟嘌呤-9-基甲基,
次黄嘌呤-9-基甲基,胸腺
嘧啶-1-基甲基,尿
嘧啶-1-基甲基或
胞嘧啶-1-基甲基;X和Y可以相同也可以不同,每个都表示氢或羟基,但不包括X为氢,Y为羟基的情况)。本发明的化合物可用作抗病毒剂或抗恶性肿瘤剂。