Synthesis, resolution, and biological evaluation of atropisomeric (aR)- and (aS)-16-methyllamellarins N: unique effects of the axial chirality on the selectivity of protein kinases inhibition

J Med Chem. 2013 Sep 26;56(18):7289-301. doi: 10.1021/jm400719y. Epub 2013 Sep 13.

Abstract

The total synthesis of the optically active (aR)- and (aS)-16-methyllamellarins N (3a and 3b) was achieved via resolution on HPLC chiral stationary phase. The kinase inhibitory activities of both enantiomers were evaluated on eight protein kinases relevant to cancer and neurodegenerative diseases (CDK1/cyclin B, CDK2/cyclin A, CDK5/p25, GSK-3α/β, PIM1, DYRK1A, CLK3, and CK1). Isomer (aR)-3b exhibited potent but nonselective inhibition on all protein kinases except CK1, while (aS)-3a selectively inhibited only GSK-3α/β, PIM1, and DYRK1A. The different inhibition profiles of (aS)-3a and (aR)-3b were elucidated by docking simulation studies. Although parental lamellarin N (2) inhibited the action of topoisomerase I, both (aS)-3a and (aR)-3b showed no inhibition of this enzyme. The phenotypic cytotoxic activities of 2, (aS)-3a, and (aR)-3b on three cancer cell lines (HeLa, SH-SY5Y, and IMR32) changed according to their topoisomerase I and protein kinase inhibitory activities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / metabolism
  • Antineoplastic Agents / pharmacology
  • Cell Line, Tumor
  • Chemistry Techniques, Synthetic
  • DNA Topoisomerases, Type I / chemistry
  • DNA Topoisomerases, Type I / metabolism
  • Humans
  • Molecular Docking Simulation
  • Polycyclic Compounds / chemical synthesis*
  • Polycyclic Compounds / chemistry
  • Polycyclic Compounds / metabolism
  • Polycyclic Compounds / pharmacology*
  • Protein Conformation
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / metabolism
  • Protein Kinase Inhibitors / pharmacology
  • Protein Kinases / chemistry
  • Protein Kinases / metabolism*
  • Stereoisomerism
  • Structure-Activity Relationship
  • Substrate Specificity
  • Topoisomerase I Inhibitors / chemical synthesis
  • Topoisomerase I Inhibitors / chemistry
  • Topoisomerase I Inhibitors / metabolism
  • Topoisomerase I Inhibitors / pharmacology

Substances

  • Antineoplastic Agents
  • Polycyclic Compounds
  • Protein Kinase Inhibitors
  • Topoisomerase I Inhibitors
  • Protein Kinases
  • DNA Topoisomerases, Type I