Structure—Activity Relationships of Some 3-Substituted-4-hydroxycoumarins as HIV-1 Protease Inhibitors.

The screening of the HIV-1 protease (PR) inhibitory activity (IC-50) of various substituted 3-phenyl-4-hydroxycoumarins, 3-benzyl-4-hydroxycoumarins, 3-phenoxy-4-hydroxy-coumarins, 3-benzenesulfonyl-4-hydroxycoumarins and 3-(7-coumarinyloxy)-4-hydroxycoumarins was performed. The data indicate the importance of substituents at positions 5 and 7 of the coumarin ring on the inhibitory potency of the HIV-1-PR.