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Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry

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Published on: October 2, 2016

Two new withanolide lactones from flos daturae.

Hai-Xue Kuang¹, Bing-You Yang, Yong-Gang Xia

¹Key Laboratory of Chinese Materia Medica, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China. hxkuang@hotmail.com

Molecules (Basel, Switzerland)

|July 13, 2011

Summary

Researchers discovered two novel withanolides, baimantuoluoline G and baimantuoluoside H, from Datura metel L. flowers. These compounds were identified using advanced spectroscopic and chemical analysis techniques.

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Area of Science:

Natural Product Chemistry
Pharmacognosy
Medicinal Chemistry

Background:

Datura metel L. is a plant with a history of traditional medicinal use.
Withanolides are a class of naturally occurring steroidal lactones with diverse biological activities.
Chemical constituents of Datura species are of interest for potential therapeutic applications.

Purpose of the Study:

To isolate and characterize new withanolides from Datura metel L.
To elucidate the chemical structures of novel compounds using spectroscopic methods.
To contribute to the understanding of the phytochemical profile of Datura metel L.

Main Methods:

Extraction and fractionation of Datura metel L. flowers using macroporous resin chromatography.
Isolation of compounds using chromatographic techniques.
Structure elucidation employing 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy and High-Resolution Electrospray Ionization Mass Spectrometry (HRESIMS).

Main Results:

Two new withanolides, designated baimantuoluoline G (1) and baimantuoluoside H (2), were isolated.
The chemical structures of compounds 1 and 2 were fully determined through comprehensive spectroscopic data analysis.
The specific stereochemistry and structural features of the new compounds were established.

Conclusions:

The study successfully identified and characterized two previously unknown withanolides from Datura metel L.
The findings expand the known chemical diversity of withanolides.
This research provides a basis for further investigation into the biological activities and pharmacological potential of these novel compounds.