Synthesis and biological evaluation of carbocyclic analogues of pachastrissamine

Mar Drugs. 2015 Feb 3;13(2):824-37. doi: 10.3390/md13020824.

Abstract

A series of carbocyclic analogues of naturally-occurring marine sphingolipid pachastrissamine were prepared and biologically evaluated. The analogues were efficiently synthesized via a tandem enyne/diene-ene metathesis reaction as a key step. We found that the analogue 4b exhibited comparable cytotoxicity and more potent inhibitory activity against sphingosine kinases, compared to pachastrissamine. Molecular modeling studies were conducted to provide more detailed insight into the binding mode of 4b in sphingosine kinase. In our docking model, pachastrissamine and 4b were able to effectively bind to the binding pocket of sphingosine kinase 1 as co-crystalized sphingosine. However, 4b showed a hydrophobic interaction with Phe192, which suggests that it contributes to its increased inhibitory activity against sphingosine kinase 1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Survival / drug effects
  • Coloring Agents
  • Drug Screening Assays, Antitumor
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / pharmacology*
  • Humans
  • Models, Molecular
  • Molecular Docking Simulation
  • Phosphotransferases (Alcohol Group Acceptor) / antagonists & inhibitors*
  • Protein Binding
  • Rhodamines
  • Sphingosine / analogs & derivatives*
  • Sphingosine / chemical synthesis
  • Sphingosine / chemistry
  • Sphingosine / pharmacology
  • Structure-Activity Relationship

Substances

  • Coloring Agents
  • Enzyme Inhibitors
  • Rhodamines
  • pachastrissamine
  • lissamine rhodamine B
  • Phosphotransferases (Alcohol Group Acceptor)
  • sphingosine kinase
  • Sphingosine