Results 61 to 70 of about 796 (189)

Lichen-Derived Depsides and Depsidones Modulate the Nrf2, NF-κB and STAT3 Signaling Pathways in Colorectal Cancer Cells

open access: yesMolecules, 2021
The study aimed to evaluate the possible modulation of Nrf2, NF-ĸB and STAT3 signaling pathways in the colorectal cancer (CRC) cells line DLD-1 and HCT116 by secondary metabolites of lichens.
Katarzyna Papierska   +6 more
doaj   +1 more source

Lichen and Its Microbiome as an Untapped Source of Anti‐Biofilm Compounds

open access: yesChemistry &Biodiversity, Volume 22, Issue 4, April 17, 2025.
Lichens and their associated fungi give rise to the evaluation of several extracts and compounds against biofilms. ABSTRACT Lichen substances have been first described in the 1870s, and around 10 000 compounds have been isolated and characterized. Most of them have been evaluated for their activity on planktonic microorganisms (bacteria and fungi ...
Marion Millot   +4 more
wiley   +1 more source

Conventional and innovative approaches to black fungi control for stone heritage preservation

open access: yesIUBMB Life, Volume 77, Issue 3, March 2025.
Abstract Black Meristematic Fungi (BMF) are characterized by a thick melanized cell wall and an isodiametric cellular expansion. BMF represent one of the most damaging groups of microorganisms causing the deterioration of outdoor exposed stone monuments mainly due to the formation of dark spots and patches leading to the darkening of their surface ...
Domenico Celi   +2 more
wiley   +1 more source

New Chlorine-Containing Depsidones From Lichens

open access: yes, 1990
The depsidones, 3-O-demethylscensidin (2,7-dichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo[ b,e ][1,4]dioxepin-11-one)(5), O- methyldiploicin (2,4,7,9-tetrachloro-3,8-dimethoxy-1,6-dimethyl-11 H- dibenzo [ b,e ][1,4]dioxepin-11-one (6) and O ...
JA Elix, DA Venables, GA Jenkins
core   +1 more source

Herbicidal and Plant-growth Stimulating Effects of Phenolic Compounds Isolated from Lichens

open access: yesOrbital: The Electronic Journal of Chemistry, 2015
The depsides atranorin (7) and diffractaic acid (1), the depsidones hypostictic (2) protocetraric (3), salazinic (4) acids, the xanthone secalonic acid (5), and usnic acid (6) were evaluated for their phytotoxic potentials against the target species ...
Marize Terezinha L. Pereira Peres   +3 more
doaj   +3 more sources

Lichen Polyphenolic Compounds for the Eradication of Candida albicans Biofilms

open access: yesFrontiers in Cellular and Infection Microbiology, 2021
Lichens, due to their symbiotic nature (association between fungi and algae), constitute a chemical factory of original compounds. Polyphenolic compounds (depsides and depsidones) are the main constituents of lichens and are exclusively biosynthesized by
Marion Girardot   +8 more
doaj   +1 more source

Biosynthesis of Depsides, Depsidones, and Diphenyl Ethers from Fungi and Lichens

open access: yesAsian Journal of Organic Chemistry, Volume 14, Issue 2, February 2025.
Depsides are natural products derived from (poly)phenolic acid derivatives connected by ester bonds. Recent research has revealed crucial molecular mechanisms and distinctive enzymatic chemistry underlying the biosynthesis of depsides, as well as related natural products, such as depsidones and diphenyl ethers.
Qiaolin Ji, Yudai Matsuda
wiley   +1 more source

Antiplasmodial Natural Products

open access: yesMolecules, 2011
Malaria is a human infectious disease that is caused by four species of Plasmodium. It is responsible for more than 1 million deaths per year. Natural products contain a great variety of chemical structures and have been screened for antiplasmodial ...
Cláudio R. Nogueira, Lucia M. X. Lopes
doaj   +1 more source

Cytotoxic Prenylated Depsidones from Garcinia parvifolia

open access: yes, 2016
Leaf extracts of Garcinia parvifolia provided relatively high yields of four novel, cytotoxic prenylated depsidones.
Yuan-Jian Xu (3060102)   +7 more
core   +1 more source

A Novel b-Orcinol Depsidone of Lichen Lobaria pulmonaria [PDF]

open access: yesAsian Journal of Chemistry, 2014
In continuation of our phytochemical survey of Lobaria pulmonaria has led to the identification of deoxystictic acid in this foliose lichen species for the first time. The isolated β-orcinol depsidone showed moderate anti-hydroxyl radical activity using fluorescence spectroscopy at in vitro conditions.
Pejin, Boris   +4 more
openaire   +2 more sources

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