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[Chemical constituents from Polygonum multiflorum].

Jing-Xian Zhang1, Yan-Mei Cui1

  • 1State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Ministry of Education & Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|September 19, 2017
PubMed
Summary

Researchers isolated six compounds from Polygonum multiflorum roots, including a novel stilbene glycoside. These compounds were identified using advanced chromatographic and spectral analysis techniques.

Keywords:
2, 3, 5, 4′-tetrahydroxystilbene-2-O-(2″-O-p-hydroxybenzoyl)-β-D-glucosidePolygonum multiflorumchemical constituents

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Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Organic Chemistry

Background:

  • Polygonum multiflorum, a traditional medicinal herb, is known for its diverse bioactive compounds.
  • The tuberous root of Polygonum multiflorum is a rich source of stilbenes and anthraquinones.

Purpose of the Study:

  • To isolate and characterize chemical constituents from the ethyl acetate extract of Polygonum multiflorum tuberous root.
  • To identify novel compounds with potential pharmacological activities.

Main Methods:

  • Silica gel column chromatography
  • ODS reversed-phase silica gel chromatography
  • Sephadex LH-20 gel filtration
  • Preparative High-Performance Liquid Chromatography (HPLC)
  • Spectroscopic analysis (NMR, MS)

Main Results:

  • Six compounds were successfully isolated and identified.
  • Compound 1, 2,3,5,4'-tetrahydroxystilbene-2-O-(2″-O-p-hydroxybenzoyl)-β-D-glucoside, was determined to be a new stilbene glycoside.
  • Compounds 2-6 were identified as known stilbene glycosides and anthraquinones: 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside, 2,4,6,4'-tetrahydroxystilbene-2-O-β-D-glucoside, emodin-8-O-β-D-glucopyranoside, physcion-8-O-β-D-glucopyranoside, and 8-O-methyl-emodin.

Conclusions:

  • The study successfully elucidated the structures of six compounds from Polygonum multiflorum.
  • The discovery of a new stilbene glycoside contributes to the phytochemical knowledge of this plant.
  • Further research is warranted to explore the biological activities of the isolated compounds.