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Dendrobine-type alkaloids from Dendrobium nobile.

Mao-Sheng Zhang1, Lang Linghu1, Gang Wang1

  • 1School of Pharmacy, Zunyi Medical University, Zunyi, China.

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|December 21, 2021
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Summary

Researchers isolated six dendrobine-type alkaloids from Dendrobium nobile, including two novel compounds. These alkaloids were tested for cytotoxic effects on human tumor cell lines.

Keywords:
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Area of Science:

  • Natural Product Chemistry
  • Pharmacology
  • Organic Chemistry

Background:

  • Dendrobium nobile is a traditional medicinal herb.
  • Alkaloids from Dendrobium species exhibit diverse biological activities.

Purpose of the Study:

  • To isolate and characterize dendrobine-type alkaloids from Dendrobium nobile.
  • To evaluate the cytotoxic effects of these alkaloids on human tumor cell lines.

Main Methods:

  • Silica gel and Sephadex LH-20 gel column chromatography.
  • Preparative High-Performance Liquid Chromatography (HPLC).
  • 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
  • Methyl Thiazolyl Tetrazolium (MTT) assay.

Main Results:

  • Six dendrobine-type alkaloids were isolated and identified: N-methoxylcarbonyldendrobine (1), dendronboic acid (2), dendrobine (3), 6-hydroxyldendrobine (4), dendrobine N-oxide (5), and denrine (6).
  • Compounds 1 and 2 are new alkaloids.
  • The cytotoxic effects of compounds 1-6 were evaluated against HCT-116 and SW1990 human tumor cell lines.

Conclusions:

  • The study successfully isolated and identified six dendrobine-type alkaloids from Dendrobium nobile.
  • Two novel alkaloids were discovered.
  • The cytotoxic potential of these compounds warrants further investigation.