Cytotoxic constituents from the skin of the toad Bufo bufo gargarizans

J Asian Nat Prod Res. 2011 Feb;13(2):111-6. doi: 10.1080/10286020.2010.545350.

Abstract

To study the chemical composition of the skin of Bufo bufo gargarizans, various chromatographic methods were used in the isolation procedures and the structures of isolated compounds were determined based on NMR and MS analysis. As a result, two new compounds were isolated from its ethanolic extract and characterized as N-[2-hydroxy-2-(4-hydroxyphenyl)ethyl]-N-methylurea (1) and 19-oxocinobufotalin 3-adipoylarginine ester (2), together with 11 known compounds. Isolated bufadienolides showed significant inhibition effect against human hepatocellular carcinoma cell line SMMC-7721 in vitro.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / isolation & purification*
  • Antineoplastic Agents / pharmacology*
  • Arginine / analogs & derivatives*
  • Arginine / chemistry
  • Arginine / isolation & purification
  • Arginine / pharmacology
  • Bufanolides / chemistry
  • Bufanolides / isolation & purification*
  • Bufanolides / pharmacology*
  • Bufonidae*
  • China
  • Drug Screening Assays, Antitumor
  • Humans
  • Methylurea Compounds / chemistry
  • Methylurea Compounds / isolation & purification*
  • Methylurea Compounds / pharmacology*
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Skin / chemistry*

Substances

  • 9-oxocinobufotalin 3-adipoylarginine ester
  • Antineoplastic Agents
  • Bufanolides
  • Methylurea Compounds
  • N-(2-hydroxy-2-(4-hydroxyphenyl)ethyl)-N-methylurea
  • Arginine