Abstract
The design, synthesis and SAR study of a new series of HIV-1 protease inhibitors with pentacyclic triterpenoids as P2 ligands and phenylsulfonamide as P2′ ligands were discussed. These compounds exhibited micromolar inhibitory potency, among which compound T1c displayed HIV-1 protease inhibition with IC50 values of 0.12 μM, which was 67 times the inhibitory activity of its raw material Ursolic acid (8.0 μM).
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