Results 61 to 70 of about 1,299 (187)
Δ-Keto-acid/hydroxy-lactone isomerization in some lichen depsides, depsidones and diphenyl ethers.
Organic and biomolecular chemistryIn some compounds in lichens, the carboxylic acid is ortho-substituted by an 2-oxoalkyl chain. This particular structure induces the existence of δ-keto-acid ka or hydroxy-lactone hl isomers, clearly identified by their NMR data and chemical properties ...
P. Uriac +4 more
semanticscholar +1 more source
Herbicidal and Plant-growth Stimulating Effects of Phenolic Compounds Isolated from Lichens
Orbital: 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
Antiplasmodial Natural Products
Molecules, 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
Lichen Polyphenolic Compounds for the Eradication of Candida albicans Biofilms
Frontiers 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
A Novel b-Orcinol Depsidone of Lichen Lobaria pulmonaria [PDF]
Asian 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
Beilstein Journal of Organic Chemistry, 2015 Three new depsidones, botryorhodines E–G (1–3), and two new isoindolinones, meyeroguillines A and B (7 and 9), along with five known compounds were isolated from an endophytic fungus Meyerozyma guilliermondii, derived from the mangrove plant Kandelia ...
Senhua Chen +5 more
doaj +1 more source
Naphthalenones and Depsidones from a Sponge-Derived Strain of the Fungus Corynespora cassiicola
Molecules, 2016 Two new naphthalenones, corynenones A and B (1 and 2), and one new depsidone, corynesidone E (3), together with one known depsidone, corynesidone A (4) and two known diphenyl ethers, corynethers A (5) and B (6), were isolated from the sponge-derived ...
Dong-Lin Zhao +5 more
doaj +1 more source
, 2020 Background: Traditionally, Usnea genus has significant uses in the treatment of swelling and tumors in Africa and Asia. The aim of the present study was to investigate the chemical constituents present in the acetone extract (AE) of Usnea subfloridana ...
T. Nguyen +5 more
semanticscholar +1 more source
Chemistry and BiodiversityEight depsidone derivatives (1–8), including three new compounds designated as westersidones A–C (1–3), were isolated from Westerdykella dispersa CS‐734, an endozoic fungus derived from the deep‐sea cold seep mussel Gigantidas platifrons.
Bei‐Ning Xie +4 more
semanticscholar +1 more source
Orbital: The Electronic Journal of ChemistryLichenized fungi (lichens) produce many compounds especially those derived from the polyketide pathway. These are predominantly phenolic compounds, most of which are unique to lichens, and long-chain fatty acids.
Aline Siqueira Gianini +5 more
doaj +1 more source