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Morphinane alkaloid dimers from Sinomenium acutum.

Hui-Zi Jin1, Xiao-Ling Wang, Hong-Bing Wang

  • 1Shanghai Institute of Materia Medical, Chinese Academy of Sciences, People's Republic of China.

Journal of Natural Products
|December 18, 2007
PubMed
Summary

Researchers isolated two new morphinane alkaloid dimers and a known one from Sinomenium acutum stems. These alkaloids showed weak cytotoxicity against A549 and HeLa cancer cell lines.

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Area of Science:

  • Natural Product Chemistry
  • Pharmacology

Background:

  • Sinomenium acutum is a traditional medicinal plant.
  • Morphinane alkaloids are a class of compounds with diverse biological activities.

Purpose of the Study:

  • To isolate and characterize new morphinane alkaloid dimers from Sinomenium acutum.
  • To evaluate the cytotoxicity of isolated alkaloids against cancer cell lines.

Main Methods:

  • Extraction of alkaloids from Sinomenium acutum stems using ethanol.
  • Structure elucidation using spectroscopic methods (NMR, MS).
  • Determination of absolute configuration via Circular Dichroism (CD) spectroscopy.
  • Cytotoxicity assays against A549, P388, and HeLa cell lines.

Main Results:

  • Two new morphinane alkaloid dimers, 2,2'-disinomenine (1) and 7',8'-dihydro-1,1'-disinomenine (2), were identified.
  • Known 1,1'-disinomenine (3) was also isolated.
  • Alkaloids 1 and 3 exhibited weak inhibition against A549 (lung carcinoma) and HeLa (cervical cancer) cell lines.

Conclusions:

  • The study successfully identified novel morphinane alkaloid dimers from S. acutum.
  • The isolated alkaloids possess potential cytotoxic properties warranting further investigation.