Isolation and identification of antitrypanosomal and antimycobacterial active steroids from the sponge Haliclona simulans

Mar Drugs. 2014 May 16;12(5):2937-52. doi: 10.3390/md12052937.

Abstract

The marine sponge Haliclona simulans collected from the Irish Sea yielded two new steroids: 24-vinyl-cholest-9-ene-3β,24-diol and 20-methyl-pregn-6-en-3β-ol,5a,8a-epidioxy, along with the widely distributed 24-methylenecholesterol. One of the steroids possesses an unusually short hydrocarbon side chain. The structures were elucidated using nuclear magnetic resonance spectroscopy and confirmed using electron impact- and high resolution electrospray-mass spectrometry. All three steroids possess antitrypanosomal and anti-mycobacterial activity. All the steroids were found to possess low cytotoxicity against Hs27 which was above their detected antitrypanosomal potent concentrations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / isolation & purification
  • Anti-Bacterial Agents / pharmacology*
  • Cell Survival / drug effects
  • Humans
  • Hydroxycholesterols / chemistry
  • Hydroxycholesterols / isolation & purification
  • Hydroxycholesterols / pharmacology*
  • Molecular Conformation
  • Mycobacterium / drug effects*
  • Porifera / chemistry*
  • Pregnanes / chemistry
  • Pregnanes / isolation & purification
  • Pregnanes / pharmacology*
  • Trypanocidal Agents / chemistry
  • Trypanocidal Agents / isolation & purification
  • Trypanocidal Agents / pharmacology*
  • Trypanosoma / drug effects

Substances

  • 20-methyl-pregn-6-en-3beta-ol,5a,8a-epidioxy
  • 24-vinyl-cholest-9-ene-3beta,24-diol
  • Anti-Bacterial Agents
  • Hydroxycholesterols
  • Pregnanes
  • Trypanocidal Agents