Synthesis and preliminary biological evaluation of new derivatives of the marine alkaloid leucettamine B as kinase inhibitors

Eur J Med Chem. 2010 Feb;45(2):805-10. doi: 10.1016/j.ejmech.2009.10.009. Epub 2009 Oct 12.

Abstract

New derivatives of the marine alkaloid leucettamine B were prepared in five steps with overall yields ranging from 23 to 30%. The key step of our strategy has been the sulfur/nitrogen displacement under solvent-free microwave irradiation of (5Z) 5-benzo[1,3]-dioxo-5-ylmethylene-2-ethylsulfanyl-3,5-dihydroimidazol-4-one 3 with a mono-protected ethylenediamine 2. After deprotection of the N-Boc group, the amino derivative of leucettamine B 5 was subjected to reductive amination in two steps with retention of configuration of the double bond, to lead to eight new analogs of leucettamine B. The effect of these compounds on CK1alpha/beta, CDK5/p25, and GSK-3alpha/beta were investigated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkaloids / chemical synthesis*
  • Alkaloids / chemistry
  • Alkaloids / pharmacology*
  • Benzodioxoles / chemical synthesis*
  • Benzodioxoles / chemistry
  • Benzodioxoles / pharmacology*
  • Imidazolines / chemical synthesis*
  • Imidazolines / chemistry
  • Imidazolines / pharmacology*
  • Oceans and Seas
  • Protein Kinase Inhibitors / chemical synthesis*
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Protein Kinases / metabolism*

Substances

  • Alkaloids
  • Benzodioxoles
  • Imidazolines
  • Protein Kinase Inhibitors
  • Protein Kinases