Xanthone biosynthesis in Hypericum perforatum cells provides antioxidant and antimicrobial protection upon biotic stress [PDF]
, 2009 Xanthone production in Hypericum perforatum (HP) suspension cultures in response to elicitation by Agrobacterium tumefaciens co-cultivation has been studied. RNA blot analyses of HP cells co-cultivated with A.
Conceição, Luís F. R. +3 more
core +1 more source
Donor–Acceptor Pentacene Analogues With Near‐Infrared Emission and Tunable Aromaticity
Angewandte Chemie, EarlyView.Air‐ and photostable heterocyclic pentacene analogues with donor and acceptor groups flanking a para‐quinodimethane core exhibit large dipole moments, narrow bandgaps, reversible redox behavior, and NIR‐I to NIR‐II absorption and emission with pronounced solvatochromism.
Krzysztof Nowak +6 more
wiley +2 more sources
Structure–Activity Relationship of Xanthones as Inhibitors of Xanthine Oxidase
Molecules, 2018 Polygala plants contain a large number of xanthones with good physiological activities. In our previous work, 18 xanthones were isolated from Polygala crotalarioides.
Ling-Yun Zhou +5 more
doaj +1 more source
Xanthone biosynthesis and accumulation in calli and suspended cells of Hypericum androsaemum [PDF]
, 2000 Calli and suspended cells of Hypericum androsaemum accumulated high levels of 1,3,5,6 and 1,3,6,7 oxygenated xanthones. The major compounds include simple oxygenated xanthones or derivatives with prenyl, pyran or methoxyl groups, four of them being new
Andrade, Paula B. +4 more
core +1 more source
Hydrogen Atom Transfer Induces Photodegradation in Carbonyl‐Based Multi‐Resonance TADF Emitters
Angewandte Chemie, EarlyView.Boosting triplet harvesting in N/C═O MR‐TADF emitters unexpectedly induces rapid photodegradation under oxygen‐free conditions. Spectroscopic studies reveal that triplet excited states trigger hydrogen‐atom transfer from solvent to the carbonyl unit, driven by triplet energetics and hydrogen electrophilicity.
Changfeng Si +4 more
wiley +2 more sources
Xanthones Content in Swertia multicaulis D. Don from Nepal
Molecules, 2018 The medicinal plant Swertia multicaulis D. Don was collected in Rasuwa District (Nepal) and the xanthone content of its ethyl acetate extracts was studied. The total amount of xanthones in S.
Binu Timsina +6 more
doaj +1 more source
Xanthones, A Promising Anti-Inflammatory Scaffold: Structure, Activity, and Drug Likeness Analysis
Molecules, 2020 Inflammation is the body’s self-protective response to multiple stimulus, from external harmful substances to internal danger signals released after trauma or cell dysfunction.
Zheling Feng +4 more
doaj +1 more source
2,3-Diarylxanthones as potential inhibitors of Arachidonic acid metabolic pathways [PDF]
, 2017 In response to an inflammatory stimulus, arachidonic acid (AA), the main polyunsaturated fatty acid present in the phospholipid layer of cell membranes, is released and metabolized to a series of eicosanoids.
Feliciano, Manuel +7 more
core +3 more sources
Tetraoxygenated naturally occurring xanthones
Phytochemistry, 2000 This review, with 350 references, gives information on the chemical study of 234 naturally occurring tetraoxygenated xanthones in 12 families, 53 genus and 182 species of higher plants, and two which are described as fungal and lichen metabolites. The value of these groups of substances in connection with pharmacological activity and therapeutic use of
V, Peres, T J, Nagem, F F, de Oliveira
openaire +3 more sources
Xanthones of Lichen Source: A 2016 Update
Molecules, 2016 An update of xanthones encountered in lichens is proposed as more than 20 new xanthones have been described since the publication of the compendium of lichen metabolites by Huneck and Yoshimura in 1996. The last decades witnessed major advances regarding
Pierre Le Pogam, Joël Boustie
doaj +1 more source