Nucleoside analogues having a ring-open structure, of general formula: ##STR1## where R and R' may be hydrogen, silyl groups, substituted alkyl groups, benzyl groups and the like, and X is an optionally substituted pyrimidine or triazine base, exhibit anti-viral activities e.g. against herpes simplex virus and cytomegalo-virus at non-toxic levels.
具有开环结构的核苷类似物,一般式为: ##STR1## 其中R和R'可以是氢、
硅基团、取代烷基团、苄基团等,X是一个可选取代的
嘧啶或三嗪碱基,在非毒性
水平下表现出抗病毒活性,例如对单纯疱疹病毒和巨细胞病毒。