Structure-Based Design of Tropane Derivatives as a Novel Series of CCR5 Antagonists with Broad-Spectrum Anti-HIV-1 Activities and Improved Oral Bioavailability

J Med Chem. 2022 Dec 22;65(24):16526-16540. doi: 10.1021/acs.jmedchem.2c01383. Epub 2022 Dec 6.

Abstract

Blocking the entry of an HIV-1 targeting CCR5 coreceptor has emerged as an attractive strategy to develop HIV therapeutics. Maraviroc is the only CCR5 antagonist approved by FDA; however, serious side effects limited its clinical use. Herein, 21 novel tropane derivatives (6-26) were designed and synthesized based on the CCR5-maraviroc complex structure. Among them, compounds 25 and 26 had comparable activity to maraviroc and presented more potent inhibitory activity against a series of HIV-1 strains. In addition, compound 26 exhibited synergistic or additive antiviral effects in combination with other antiretroviral agents. Compared to maraviroc, both 25 and 26 displayed higher Cmax and AUC0-∞ and improved oral bioavailability in SD rats. In addition, compounds 25 and 26 showed no significant CYP450 inhibition and showed a novel binding mode with CCR5 different from that of maraviroc-CCR5. In summary, compounds 25 and 26 are promising drug candidates for the treatment of HIV-1 infection.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-HIV Agents* / pharmacology
  • Anti-HIV Agents* / therapeutic use
  • Biological Availability
  • CCR5 Receptor Antagonists / pharmacology
  • Cyclohexanes / pharmacology
  • HIV Infections* / drug therapy
  • HIV-1*
  • Maraviroc / pharmacology
  • Rats
  • Rats, Sprague-Dawley
  • Receptors, CCR5 / metabolism
  • Triazoles / pharmacology
  • Triazoles / therapeutic use
  • Tropanes / pharmacology

Substances

  • Maraviroc
  • Anti-HIV Agents
  • CCR5 Receptor Antagonists
  • Cyclohexanes
  • Triazoles
  • Tropanes
  • Receptors, CCR5