Structure-based design, synthesis, X-ray studies, and biological evaluation of novel HIV-1 protease inhibitors containing isophthalamide-derived P2-ligands.
Ghosh, A.K., Takayama, J., Kassekert, L.A., Ella-Menye, J.R., Yashchuk, S., Agniswamy, J., Wang, Y.F., Aoki, M., Amano, M., Weber, I.T., Mitsuya, H.(2015) Bioorg Med Chem Lett 25: 4903-4909
- PubMed: 26096678 
- DOI: https://doi.org/10.1016/j.bmcl.2015.05.052
- Primary Citation of Related Structures:  
4ZIP - PubMed 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.
Organizational Affiliation: 
Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA. Electronic address: akghosh@purdue.edu.