lead compounds, acyclonucleosides derived from 2,1,3-benzothiadiazine dioxides, in the search for inhibitors of human cytomegalovirus (HCMV), lead us to identify the chlorophenylmethyl benzothiadiazinedioxides derivatives as potent HCMV inhibitors. The synthesis and antiviral data of this second-generation of benzothiadiazinedioxide compounds are reported.