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. 2017 Sep 8:137:30-44.
doi: 10.1016/j.ejmech.2017.05.024. Epub 2017 May 8.

Design and synthesis of potent HIV-1 protease inhibitors with (S)-tetrahydrofuran-tertiary amine-acetamide as P2-ligand: Structure-activity studies and biological evaluation

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Design and synthesis of potent HIV-1 protease inhibitors with (S)-tetrahydrofuran-tertiary amine-acetamide as P2-ligand: Structure-activity studies and biological evaluation

Xiaoguang Bai et al. Eur J Med Chem. .

Abstract

The design, synthesis, and SAR study of a new series of HIV-1 protease inhibitors incorporating stereochemically defined tetrahydrofuran-tertiary amine-acetamide P2-ligand are described. Various substituent effects on the tertiary amine P2-ligand and phenylsulfonamide P2'-ligand were investigated to maximize the ligand-binding site interactions in the protease active site. Most of inhibitors displayed low nanomolar to subnanomolar inhibitory potency. Inhibitor 20e containing N-(S-tetrahydrofuran)-N-(2-methoxyethyl)acetamide as P2-ligand along with 4-methoxylphenylsulfonamide as P2'-ligand displayed the most potent enzyme inhibitory activity (IC50 = 0.35 nM) and remarkably low cytotoxicity (CC50 = 305 μM).

Keywords: Design; Enzyme; HIV-1 protease; Inhibitors; P2 ligand.

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