In-vitro anti-HIV and antitumor activity of new 3,6-disubstituted [1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles and thiadiazine analogues.

A series of [1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles (7-15) and the thiadiazine analogues 16-18 have been synthesized under microwave irradiation (MWI). All synthesized compounds are evaluated for their antiviral activity against the replication of HIV-1 and HIV-2 activity in MT-4. However, compounds 12 and 18 showed EC(50) = 2.