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Molecules 2018, 23(8), 2085; https://doi.org/10.3390/molecules23082085

Phenanthrenes from Juncus Compressus Jacq. with Promising Antiproliferative and Anti-HSV-2 Activities

1
Department of Pharmacognosy, University of Szeged, 6720 Szeged, Hungary
2
Institute of Environmental Sciences, Faculty of Water and Environmental Management, Szent István University Szarvas, H-5540 Szarvas, Hungary
3
Department of Pharmacodynamics and Biopharmacy, University of Szeged, 6720 Szeged, Hungary
4
Interdisciplinary Centre of Natural Products, University of Szeged, 6720 Szeged, Hungary
5
Department of Medical Microbiology and Immunobiology, University of Szeged, 6720 Szeged, Hungary
*
Author to whom correspondence should be addressed.
Received: 21 July 2018 / Revised: 13 August 2018 / Accepted: 16 August 2018 / Published: 20 August 2018
(This article belongs to the Section Natural Products Chemistry)
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Abstract

Juncaceae species are rich sources of phenanthrenes. The present study has focused on the isolation and structure determination of biologically active components from Juncus compressus. Eleven compounds (nine phenanthrenes and two flavonoids) have been isolated from the plant by the combination of different chromatographic methods. Two compounds (compressins A (Compound 1) and B (Compound 2)) are novel natural products, while seven phenanthrenes (effusol (Compound 3), effususol (Compound 4), juncusol (Compound 5), 2-hydroxy-1-methyl-4-oxymethylene-5-vinyl-9,10-dihydrophenanthrene (Compound 6), 7-hydroxy-1-methyl-2-methoxy-5-vinyl-9,10-dihydrophenanthrene (Compound 7), effususin A (Compound 8), and dehydroeffusol (Compound 9)), and two flavonoids (apigenin (Compound 10) and luteolin (Compound 11) were isolated for the first time from the plant. Compressin B (Compound 2) is a dimeric phenanthrene, in which two juncusol monomers (Compound 5) are connecting through their C-3 atoms. The structure elucidation of the isolated compounds was carried out using 1D, 2D NMR spectroscopic methods and HR-MS measurements. In vitro investigation of the antiproliferative effect of the phenanthrenes on two cervical (HeLa and SiHa) and an ovarian human tumor cell line (A2780) revealed that compounds have remarkable antiproliferative activity, mainly on the HeLa cell line. Moreover, juncusol (Compound 5) proved to possess significant antiviral activity against the herpes simplex 2 virus (HSV-2). View Full-Text
Keywords: Juncus compressus; phenanthrene; flavonoid; anti-HSV-2; antiproliferative Juncus compressus; phenanthrene; flavonoid; anti-HSV-2; antiproliferative
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Bús, C.; Kúsz, N.; Jakab, G.; Senobar Tahaei, S.A.; Zupkó, I.; Endrész, V.; Bogdanov, A.; Burián, K.; Csupor-Löffler, B.; Hohmann, J.; Vasas, A. Phenanthrenes from Juncus Compressus Jacq. with Promising Antiproliferative and Anti-HSV-2 Activities. Molecules 2018, 23, 2085.

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