Purpose: To isolate and characterize chemical compounds of biological importance from the whole
plant of
Dendrobium hongdie
.
Methods: The whole plants of
Dendrobium hongdie was extracted with ethanol (EtOH) and separated
using silica gel, Sephadex LH-20 and MCI gel to isolate the pure compounds. Characterization of the
isolated compounds was achieved using
1H and
13C nuclear magnetic resonance spectroscopy (NMR)
and mass spectrometry (MS).
Results: Nine compounds including two phenanthrenes, three bibenzyls, a phenanthraquinone, two
lignans and a sterol were isolated from the extract. The structures of the compounds were elucidated as
nudol (1), gigantol (2), batatasin III (3), tristin (4), moscatin (5), ephemeranthoquinone (6), (-)-
syringaresinol (7), liriodendrin (8) and β-sitosterol (9).
Conclusion: Nine compounds have been successfully isolated from
D. hongdie for the first time. This
plant is a potential source of some useful phytochemicals.
