the antiherpes potential of the 5- ( 2-x-vinyl ) -udrs was compared with that of 5-iodo- , 5-fluoro- , 5-formyl- and 5-ethyl-udr ( iudr , fudr , fudr , eudr ) as well as of 9- ( 2-hydroxyethoxymethyl ) guanine ( acyclovir , acv ) , 2'-fluoro-5-iodo-1-beta-d-arabinofuranosyl ( ara ) -cytosine ( fiac ) , 2'-fluoro-5-methylarauracil ( fmau ) , arabinosylthymine ( arat ) and ( e ) -5- ( 2-bromovinyl ) - and 5-vinyl-arau ( brvarau , varau ) .
C0018321
guanine
C0001367
acyclovir