| 摘要 |
The invention deals with novel compounds useful as antiviral agents. The compounds have the structure <CHEM> wherein Z1 and Z2 are the same or different and selected from hydrogen, one to six carbon atoms alkyls, phenyl and benzyl, X is H, OH or together with Y is 0, Y is H or together with X is 0, n is the integer 0, 2 or 4, R1 and R2 together complete a beta-pentofuranose sugar, R3 is H or OH and B is a substituted or unsubstituted purine base. s |
