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Related Experiment Videos

[New dimeric phthalide derivative from Angelica sinensis].

Dong-min Su1, Shi-shan Yu, Hai-lin Qin

  • 1Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|May 7, 2005
PubMed
Summary

Researchers identified a new dimeric phthalide derivative and an epimer from Angelica sinensis roots. These compounds, Z-3

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Organic Chemistry

Background:

  • Angelica sinensis (Radix Angelica) is a traditional medicinal herb.
  • Its roots are known to contain various bioactive compounds.
  • Understanding its chemical profile is crucial for medicinal applications.

Purpose of the Study:

  • To isolate and characterize the chemical constituents present in the roots of Angelica sinensis.
  • To identify novel compounds and elucidate their structures.

Main Methods:

  • Silica gel column chromatography was employed for separation.
  • Structure elucidation utilized comprehensive chemical and spectral analyses, including Infrared spectroscopy (IR), Mass Spectrometry (MS), and Nuclear Magnetic Resonance (NMR) spectroscopy (1D and 2D).

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Main Results:

  • Three known phthalide derivatives were identified.
  • A new dimeric phthalide derivative, Z-3',8',3'a,7'a-tetrahydro-6,3',7,7'a-diligustilide-8'-one (1), was isolated and characterized.
  • A pair of epimers, Z,Z'-6,6',7,3'a-diligustilide (2) and its 8-epimer (3), were also identified.

Conclusions:

  • Compound 1 represents a novel dimeric phthalide derivative.
  • Compound 3 was reported for the first time from Radix Angelica.
  • The findings contribute to the phytochemical knowledge of Angelica sinensis.