Three new 1-(p-hydroxybenzyl)phenanthrenes from Bletilla striata

J Asian Nat Prod Res. 2017 Feb;19(2):140-144. doi: 10.1080/10286020.2016.1184254. Epub 2016 May 31.

Abstract

Three new benzylphenanthrenes, named 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2-ol (1), 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2,8-diol (2), and 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2,6-diol (3), along with a known analog were isolated from tubers of Bletilla striata. The structures of these new compounds were established by means of HR-ESI-MS, 1D, and 2D NMR.

Keywords: Bletilla striata; Orchidaceae; benzylphenanthrene; chemical constituent.

MeSH terms

  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Orchidaceae / chemistry*
  • Phenanthrenes / chemistry
  • Phenanthrenes / isolation & purification*
  • Plant Tubers / chemistry

Substances

  • 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2,6-diol
  • 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2,8-diol
  • 1-(p-hydroxybenzyl)-4,7-dimethoxyphenanthrene-2-ol
  • Phenanthrenes