salicylates has been researched along with depsidone* in 5 studies
5 other study(ies) available for salicylates and depsidone
| Article | Year |
|---|---|
Depside and Depsidone Synthesis in Lichenized Fungi Comes into Focus through a Genome-Wide Comparison of the Olivetoric Acid and Physodic Acid Chemotypes of
Topics: Depsides; Dibenzoxepins; Fungi; Genomics; Lactones; Lichens; Multigene Family; Parmeliaceae; Salicylates | 2021 |
Salazinic Acid-Derived Depsidones and Diphenylethers with α-Glucosidase Inhibitory Activity from the Lichen Parmotrema dilatatum.
Three new depsidones, parmosidones F - G (1 - 2), and 8'-O-methylsalazinic acid (3), and 3 new diphenylethers, parmetherines A - C (4 - 6), together with 2 known congeners were isolated from the whole thalli of Topics: alpha-Glucosidases; Depsides; Glycoside Hydrolase Inhibitors; Lactones; Lichens; Plant Extracts; Salicylates | 2020 |
A new depsidone and antibacterial activities of compounds from Usnea undulata Stirton.
Usnea undulata Stirton (Usneaaceae) is a fruticose lichen used locally in ethnoveterinary medicine to treat mammary infections in cattle while human beings use it for the treatment of wounds in Eastern Cape, South Africa. Bioactivity-guided fractionation of its extracts led to the isolation and characterization of a new depsidone, 2'-O-methylhypostictic acid (8), together with seven known compounds, i.e. methyl β-orsellinate, norstictic acid, menegazziaic acid, (+) usnic acid, hypoconstictic acid, salazinic acid, and galbinic acid. The structures of the compounds were elucidated on the basis of their spectral analysis including homo- and hetero-nuclear correlation NMR experiments (COSY, NOESY, HMQC, and HMBC) and mass spectra as well as by comparison with available data in the literature. The minimum inhibitory concentrations (MICs) values of the compounds against six bacteria were determined. Compound 8 showed inhibitory activity against Bacillus cereus, Bacillus subtilis, and Staphylococcus epidermidis with MICs of 31, 62.5, 62.5 μg/ml, respectively. (+) Usnic acid was most active against B. subtilis, B. cereus, Staphylococcus aureus, and Escherichia coli with MICs of 8, 8, 31, and 31 μg/ml, respectively, while other compounds exhibited moderate activity. Topics: Animals; Anti-Bacterial Agents; Bacillus cereus; Bacillus subtilis; Benzofurans; Cattle; Depsides; Escherichia coli; Humans; Lactones; Microbial Sensitivity Tests; Salicylates; South Africa; Staphylococcus aureus; Usnea | 2011 |
Protein tyrosine phosphatase 1B inhibitory effects of depsidone and pseudodepsidone metabolites from the Antarctic lichen Stereocaulon alpinum.
Seven phenolic lichen metabolites (1-7) have been isolated from a methanol extract of the Antarctic lichen Stereocaulon alpinum by various chromatographic methods. The structures of these compounds were determined mainly by analysis of NMR spectroscopic data. A depsidone-type compound, lobaric acid (1) and two pseudodepsidone-type compounds, 2 and 3, exhibited potent inhibitory activity against protein tyrosine phosphatase 1B (PTP1B) with IC(50) values of 0.87microM, 6.86microM, and 2.48microM, respectively. Kinetic analyses of PTP1B inhibition by compounds 1 and 2 suggested that these compounds inhibited PTP1B activity in a non-competitive manner. Topics: Depsides; Enzyme Inhibitors; Kinetics; Lactones; Lichens; Plant Extracts; Protein Tyrosine Phosphatase, Non-Receptor Type 1; Salicylates | 2009 |
JOINT OCCURRENCE OF A LICHEN DEPSIDONE AND ITS PROBABLE DEPSIDE PRECURSOR.
A chemical race of the lichen Cetraria ciliaris Ach., known to produce the depside olivetoric acid, contains the corresponding depsidone, physodic acid, as well. Physodic acid may form by an intramolecular coupling of olivetoric acid. Topics: Ascomycota; Biphenyl Compounds; Depsides; Dibenzoxepins; Lactones; Lichens; Research; Salicylates | 1964 |