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Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues

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Published on: March 9, 2021

Lignans from Arnica species.

Thomas J Schmidt¹, Sabine Stausberg, Jeanette Von Raison

¹Institut für Pharmazeutische Biologie und Biotechnologie der Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany. thomschm@uni-meunster.de

Natural Product Research

|April 29, 2006

Summary

This summary is machine-generated.

This study isolated twelve lignans from four Arnica species, including six novel dibenzylbutyrolactol derivatives. These findings expand the known phytochemistry of Arnica, revealing diverse lignan compounds.

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Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles

Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles

Published on: March 1, 2024

Area of Science:

Phytochemistry
Natural Product Chemistry
Pharmacognosy

Background:

Arnica species are traditionally used in medicine.
Lignans are a class of phenolic compounds with diverse biological activities.
The chemical constituents of Arnica species, particularly lignans, remain largely unexplored.

Purpose of the Study:

To investigate the lignan constituents of four Arnica species.
To isolate and characterize novel lignan compounds from Arnica.
To expand the understanding of Arnica phytochemistry.

Main Methods:

Extraction and isolation of compounds from Arnica species.
Structure elucidation using Nuclear Magnetic Resonance (NMR) spectroscopy.
Mass spectral analysis for structural confirmation.

Main Results:

Twelve lignans were isolated from four Arnica species.
Six new dibenzylbutyrolactol derivatives with varying stereochemistry and substitution were identified.
Known lignans including pinoresinol, epipinoresinol, phillygenin, matairesinol, nortrachelogenin, and nortracheloside were also isolated.

Conclusions:

This study reports for the first time the presence of lignans in Arnica species.
The identified lignans, especially the novel derivatives, contribute to the known chemical diversity of Arnica.
Further research may explore the biological activities of these isolated lignans.