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NMR analysis of cultivated Sideritis euboea Heldr. | LitMetric

NMR analysis of cultivated Sideritis euboea Heldr.

Phytochem Anal

Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece.

Published: March 2020

AI Article Synopsis

Article Abstract

Introduction: Over the last decades, the demand of medicinal plants has vastly increased. The health trend and social changes are leading to a growing demand for herbal products, as medicines and in particular as food supplements. Various cultivations of medicinal plants have been developed in order not only to respond on this enormous market, but also to offer high-quality products. Cultivated plants have attracted great scientific interest for their rich and high standard chemical compositions.

Objective: Our study focuses on the phytochemical profile of cultivated Sideritis euboea Heldr., a shrub with a great commercial value. The whole isolation course of all extracts, fractions and sub-fractions was continuously monitored and traced down using an NMR strategy, which permitted their detail characterisation and enabled us to choose the more abundant extract.

Methods: Aerial parts of cultivated S. euboea were extracted with solvents of increasing polarity and their secondary metabolites were identified by NMR analyses.

Results: So far, using various analytical methods, 16 secondary metabolites have been isolated from the methanol extract; two iridoids, seven flavones, five phenylethanoid glucosides and two phenolic acids. In addition to the previous investigation of the wild population, the present study revealed that its chemical profile is similar and even richer in phenolic compounds.

Conclusion: The metabolic profile of cultivated S. euboea was studied through H-NMR spectra; the structures of the isolated secondary metabolites were assigned based on their one-dimensional and two-dimensional NMR spectra. The NMR strategy allowed us to detect even the minor compounds in the extracts.

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Source
http://dx.doi.org/10.1002/pca.2874DOI Listing

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