New triterpenoids from the orchids Scaphyglottis livida and Nidema boothii

Nat Prod Lett. 2002 Apr;16(2):81-6. doi: 10.1080/10575630290019967.

Abstract

Two new triterpenoids, nidemin (1), a modified lanostane, and 9,19-cyclolanosta-24,24-dimethyl-25-en-3beta-yl trans-p-hydroxycinnamate (2) have been isolated from the orchids Nidema boothii and Scaphyglottis livida, respectively. The isolates were characterized by spectral methods. The structure of nidemin (1) was unambiguously confirmed by X-ray analysis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromatography, Thin Layer
  • Crystallography, X-Ray
  • Hydrolysis
  • Mass Spectrometry
  • Mexico
  • Molecular Conformation
  • Molecular Structure
  • Orchidaceae / chemistry*
  • Plants, Medicinal / chemistry*
  • Stereoisomerism
  • Steroids / chemistry
  • Steroids / isolation & purification*
  • Triterpenes / chemistry
  • Triterpenes / isolation & purification*

Substances

  • 9,19-cyclolanosta-24,24-dimethyl-25-en-3-ylhydroxycinnamate
  • Steroids
  • Triterpenes
  • nidemin