The chemical composition and antibacterial activity of Teucrium polium L. (Lamiaceae) were assessed; sixteen compounds were isolated from a CH2Cl2/MeOH extract of the aerial parts of the plant including four sesquiterpenes 4β,5α-epoxy-7αH-germacr-10(14)-en-6β-ol-1-one, 4β,5α-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6β-ol, 4β,5β-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6β-ol and 4α,5β-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6α-ol, together with seven known sesquiterpenes, one known iridoid glycoside, two known flavonoids, and one known phenylpropanoid glycoside. Structures were elucidated on the basis of spectroscopic (UV, (1)H and (13)C NMR) data, as well as two-dimensional NMR ((1)H-(1)H COSY, HMQC, NOESY and HMBC), and ESI-MS analysis. The relative stereochemistry of the ketone was established by X-ray crystallography, while its absolute configuration was attained by a modified Mosher's method. Antibacterial activity of the crude extract, as well as with four of the isolated metabolites, was observed with Staphylococcus aureus anti-biofilm activity in the low μMol range. Diverse sesquiterpene-skeleton structure and corresponding comprehensive enzyme capacity is discussed.
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http://dx.doi.org/10.1016/j.phytochem.2014.03.029 | DOI Listing |
Food Sci Nutr
January 2025
Department of Food Science and Technology, Laser and Biophotonics in Biotechnologies Research Center, Isfahan (Khorasgan) Branch Islamic Azad University Semnan Iran.
Dental caries is a highly prevalent chronic condition globally. In recent years, scientists have turned to natural compounds such as plant extracts as an alternative to address concerns related to biofilm-mediated disease transmission, increasing bacterial resistance, and the adverse impacts of antibiotics. Consequently, this study investigated the antimicrobial properties of ethanolic, hydroethanolic, and aqueous extracts of L.
View Article and Find Full Text PDFPlants (Basel)
December 2024
Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Takovska 43, 11000 Belgrade, Serbia.
Pharmaceuticals (Basel)
November 2024
Research Team of Chemistry of Bioactive Molecules and the Environment, Laboratory of Innovative Materials and Biotechnology of Natural Resources, Faculty of Sciences, Moulay Ismaïl University, B.P. 11201, Zitoune, Meknes 50070, Morocco.
L., a member of the Lamiaceae family, is widely used in traditional medicine for its therapeutic properties. This study aims to analyze the chemical composition of its essential oil and extracts, evaluate their antimicrobial and antioxidant activities, and investigate the interactions of their bioactive compounds with biological targets using in silico methods to better understand their mechanisms of action.
View Article and Find Full Text PDFNat Prod Bioprospect
January 2025
State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, People's Republic of China.
Teucrifarides A-D (1-4), four previously unreported neo-clerodane-type diterpenoids, combined with sixteen known analogs (5-20), were purified from Teucrium quadrifarium. The absolute forma of compounds 1-4 were determined via spectroscopic and ECD calculation methods, together with X-ray crystallography experiments. Among them, compound 1 possessed a 5,20-epoxy ring featuring a unique cage-like 12-oxatricyclo [5.
View Article and Find Full Text PDFIran J Microbiol
December 2024
Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
Background And Objectives: Recently, the anti-herpetic activities of different plant species have been investigated. This study evaluated the effects of aqueous extract on the HSV-1 virus-infected Vero cell.
Materials And Methods: The IC of the aqueous extract was obtained by the maceration of the plant in boiling water and has been measured with the MTT method, also the q-PCR was used to study viral gene expression reduction.
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