1. Academic Validation
  2. Structure-based design, synthesis, X-ray studies, and biological evaluation of novel HIV-1 protease inhibitors containing isophthalamide-derived P2-ligands

Structure-based design, synthesis, X-ray studies, and biological evaluation of novel HIV-1 protease inhibitors containing isophthalamide-derived P2-ligands

  • Bioorg Med Chem Lett. 2015 Nov 1;25(21):4903-4909. doi: 10.1016/j.bmcl.2015.05.052.
Arun K Ghosh 1 Jun Takayama 2 Luke A Kassekert 2 Jean-Rene Ella-Menye 2 Sofiya Yashchuk 2 Johnson Agniswamy 3 Yuan-Fang Wang 3 Manabu Aoki 4 Masayuki Amano 4 Irene T Weber 3 Hiroaki Mitsuya 5
Affiliations

Affiliations

  • 1 Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA. Electronic address: akghosh@purdue.edu.
  • 2 Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA.
  • 3 Departments of Biology and Chemistry, Georgia State University, Atlanta, GA 30303, USA.
  • 4 Departments of Hematology and Infectious Diseases, Kumamoto University of Medicine, Kumamoto 860-8556, Japan.
  • 5 Departments of Hematology and Infectious Diseases, Kumamoto University of Medicine, Kumamoto 860-8556, Japan; Experimental Retrovirology Section, HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, MD 20892, USA; Center for Clinical Sciences, National Center for Global Health and Medicine, Shinjuku, Tokyo 162-8655, Japan.
Abstract

We describe the design, synthesis and biological evaluation of a series of novel HIV-1 Protease Inhibitors bearing isophthalamide derivatives as the P2-P3 ligands. We have investigated a range of acyclic and heterocyclic amides as the extended P2-P3 ligands. These inhibitors displayed good to excellent HIV-1 protease inhibitory activity. Also, a number of inhibitors showed very good Antiviral activity in MT cells. Compound 5n has shown an Enzyme Ki of 0.17 nM and Antiviral IC50 of 14 nM. An X-ray crystal structure of inhibitor 5o-bound to HIV-1 protease was determined at 1.11Å resolution. This structure revealed important molecular insight into the inhibitor-HIV-1 protease interactions in the active site.

Keywords

Antiviral; Design; HIV-1 protease; Inhibitors; Isophthalamide; Synthesis.

Figures