A novel cyanoimidazole nucleoside and derivative thereof, particularly 4-cyanoimidazolium-5-olate nucleoside and acyl derivatives thereof, and pharmaceutically acceptable salts thereof which are useful as antitumor agents and immunosuppressants, are prepared by dehydrating carboxamide derivatives of the formula: ##STR1## wherein R is an acyl group, and then, if desired, deacylating.
一种新型的
氰基
咪唑核苷及其衍
生物,特别是4-
氰基
咪唑-5-醇核苷及其酰基衍
生物,以及其药学上可接受的盐,可用作抗肿瘤剂和
免疫抑制剂。该核苷的制备方法是通过脱
水羧酰胺衍
生物,其结构式为:##STR1##其中R是酰基,然后如果需要,进行脱酰基反应。