| 摘要 |
Compounds having the structural formula I
<CHEM>
where R is selected from IIIa, IVa or Va
<CHEM>
wherein X is chlorine, fluorine, or bromine and A is hydrogen, H2PO4, benzoyl, 4-methylbenzoyl, or straight or branched-chain alkanoyl and B is hydrogen, benzoyl, 4-methylbenzoyl, or straight or branched alkanoyl and the pharmaceutically acceptable salts thereof are useful as antiviral agents and possess in vivo activity against the L1210 murine leukemia cell line. |
