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.
A second generation of benzothiadiazinedioxide (BTD) derivatives was synthesized employing benzylation reactions mainly. The chlorophenylmethyl BTD derivatives showed activity against human cytomegalovirus (HCMV) with IC(50) values ranging from 3 to 10 microM. Their 50% cytotoxic concentrations were often >200 microM to lung fibroblast HEL cell proliferation and between 20 and 35 microM for lymphocyte