Several nazolinyl]-2-methyl-4-arylidine-5-oxo-imidazolines (Va-l), 2-p
henyl-3-(aroyl amino)-4(4H)-oxo quinazolines (Vla-I) and methyl-4(4H)-
oxo-3-quinazolinyl-N-2-aryl-thioureas (Vlla-k), have been synthesised
and tested for anti-HIV activity. The structures of these compounds ha
ve been established on the basis of elemental analysis and spectral da
ta.