Intensive efforts are underway worldwide to develop chemotherapeutic agents effective against HIV, the etiological agent of AIDS. In this view, it was designed to synthesize and investigate the anti-HIV activity of some new 2-(benzoxazol-2-ylamino)-3H-4-oxopyrimidines following the lead benzoxazole (L 697, 661), which was reported to inhibit the spread of the HIV infection by 95 % in MT4 cell culture. Only the 2-(benzoxazol-2-ylarnino)-6-hydroxy-3H-4-oxopyrdine 8 (NSC 722448) was confirmed to exhibit moderate in vitro anti-HIV activity (percentage of protection 76.83 %).