| 摘要 |
<p>Compounds of formula (I) or a pharmaceutically acceptable salt thereof, in which R1 represents an aliphatic hydrocarbyl group; Ar represents a substituted or unsubstituted aromatic nucleus; X represents -SO2- or -CO- and R2 and R3 which may be identical or different represent moieties of formula (a), (b), (c), (d), (e), (f), (g), (h) or (i), wherein B represents the residue of a nucleoside base of formula (A), (G), (C), (H) or (T), provided that when R2 and R3 both represent an unsubstituted moiety of formula (a), B represents the residue of a nucleoside base which is of formula (A), (G), (C) or (H) are of value for their antiviral activity.</p> |
