Conformation-guided analogue design identifies potential antimalarial compounds through inhibition of mitochondrial respiration

Org Biomol Chem. 2018 Aug 1;16(30):5403-5406. doi: 10.1039/c8ob01257a.

Abstract

The synthesis of a 2-methyl-substituted analogue of the natural product, neopeltolide, is reported in an effort to analyze the importance of molecular conformation and ligand-target interactions in relation to biological activity. The methyl substitution was incorporated via highly diastereoselective ester enolate alkylation of a late-stage intermediate. Coupling of the oxazole sidechain provided 2-methyl-neopeltolide and synthetic neopeltolide via total synthesis. The substitution was shown to maintain the conformational preferences of its biologically active parent compound through computer modeling and NMR studies. Both compounds were shown to be potential antimalarial compounds through the inhibition of mitochondrial respiration in P. falciparum parasites.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Antimalarials / chemical synthesis*
  • Antimalarials / chemistry
  • Antimalarials / pharmacology*
  • Biological Products / chemical synthesis
  • Biological Products / chemistry
  • Biological Products / pharmacology*
  • Cell Respiration / drug effects
  • Drug Design*
  • Macrolides / chemical synthesis
  • Macrolides / chemistry
  • Macrolides / pharmacology*
  • Mitochondria / drug effects*
  • Mitochondria / metabolism
  • Molecular Conformation
  • Parasitic Sensitivity Tests
  • Plasmodium falciparum / drug effects*
  • Plasmodium falciparum / metabolism

Substances

  • Antimalarials
  • Biological Products
  • Macrolides
  • neopeltolide