Chemical constituents of Tolpis species

Fitoterapia. 2009 Oct;80(7):437-41. doi: 10.1016/j.fitote.2009.06.001. Epub 2009 Jun 11.

Abstract

Phytochemical research of two Tolpis species, T. webbii and T. sp., led to the isolation of three new compounds: 2,4'-dihydroxy-4-methoxybenzophenone (1) and the triterpenes 21 alpha, 22 alpha-epoxy-20 alpha-hydroxy-20(30)-dihydrotaraxasterol (2) and 3beta-hydroxytaraxaster-20-en-30-oic acid (3) together with 16 known compounds. The structures of the new compounds were elucidated by means of extensive IR, NMR, MS and X-ray analysis and by comparison of data reported in the literature.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Asteraceae / chemistry*
  • Benzophenones / chemistry
  • Benzophenones / isolation & purification*
  • Molecular Structure
  • Plant Components, Aerial
  • Plant Extracts / chemistry*
  • Triterpenes / chemistry
  • Triterpenes / isolation & purification*

Substances

  • 2,4'-dihydroxy-4-methoxybenzophenone
  • 21 alpha, 22 alpha-epoxy-20 alpha-hydroxy-20(30)-dihydrotaraxasterol
  • 3beta-hydroxytaraxaster-20-en-30-oic acid
  • Benzophenones
  • Plant Extracts
  • Triterpenes