Evaluation of darunavir-derived HIV-1 protease inhibitors incorporating P2' amide-derivatives: Synthesis, biological evaluation and structural studies.
Ghosh, A.K., Shahabi, D., Kipfmiller, M., Ghosh, A.K., Johnson, M., Wang, Y.F., Agniswamy, J., Amano, M., Weber, I.T., Mitsuya, H.(2023) Bioorg Med Chem Lett 83: 129168-129168
- PubMed: 36738797 
- DOI: https://doi.org/10.1016/j.bmcl.2023.129168
- Primary Citation of Related Structures:  
8F0F - PubMed Abstract: 
We report here the synthesis and biological evaluation of darunavir derived HIV-1 protease inhibitors and their functional effect on enzyme inhibition and antiviral activity in MT-2 cell lines. The P2' 4-amino functionality was modified to make a number of amide derivatives to interact with residues in the S2' subsite of the HIV-1 protease active site. Several compounds exhibited picomolar enzyme inhibitory and low nanomolar antiviral activity. The X-ray crystal structure of the chloroacetate derivative bound to HIV-1 protease was determined. Interestingly, the active chloroacetate group converted to the acetate functionality during X-ray exposure. The structure revealed that the P2' carboxamide functionality makes enhanced hydrogen bonding interactions with the backbone atoms in the S2'-subsite.
Organizational Affiliation: 
Department of Chemistry and Department of Medicinal Chemistry, Purdue University, West Lafayette, IN 47907, USA. Electronic address: akghosh@purdue.edu.