Studies of Human Immunodeficiency Virus Type 1 (HIV-1) Protease Inhibitors. III. Structure-Activity Relationship of HIV-1 Protease Inhibitors Containing Cyclohexylalanylalanine Hydroxyethylene Dipeptide lsostere.
replacement of the P4-P2 subsites of substrate-based human immunodeficiency virus type 1 protease (HIV-1 PR) inhibitorscontaining cyclohexylalanylalanine hydroxyethylene dipeptide isostere (Cha-psi [H.E.]-Ala) at positions corresponding to the scissile sites of substrates was carried out. The structure-activityrelationship revealed that compounds with the combination of hydrophilic P3 and beta-branched hydrophobic