Results 11 to 20 of about 7,063 (213)
Ultrafast intersystem crossing in xanthone from wavepacket dynamics [PDF]
, 2021 Most aromatic ketones containing first-row elements undergo unexpectedly fast intersystem crossing in few tens of picoseconds and a quantum yield close to unity.
Coen, De Graaf +2 more
core +2 more sources
PRENYLATED XANTHONES FROM Rheedia acuminata [PDF]
Acta Amazonica, 1993 Pyranojacareubin; 1,5-dihydroxy-6',6'-dimethyl-2H-pyran(2',3':6,7) -6",6"-dim-ethyI-2H,4H-pyran(2",3":2,3)xanthone and a new xanthone l,6-dihydroxy-5-methoxy-6',6'-dim-ethyl-2H-pyran(2',3':3,2)-7-(3,3-dimethylprop-2-enyl)xanthone were isolated from the ...
Maria das G. B ZOGHBI +3 more
doaj +1 more source
PRENYLATED XANTHONES FROM Rheedia acuminata (reprinted from Acta Amazônica, 23(2/3):181-185) [PDF]
Acta Amazonica, 1994 Pyranojacareubin; 1,5-dihydroxy-6',6'-dimethyl-2H-pyran(2,,3':6,7) -6",6"-dime-thyl-2H,4H-pyran(2",3":2,3)xanthone and a new xanthone l,6-dihydroxy-5-methoxy-6',6'-dime-thyl-2H-pyran(2',3':3,2)-7-(3,3-dimethylprop-2-enyl)xanthone were isolated from the ...
Maria das G. B. ZOGHBI +3 more
doaj +1 more source
Xanthone Biosynthetic Pathway in Plants: A Review
Frontiers in Plant Science, 2022 Xanthones are secondary metabolites rich in structural diversity and possess a broad array of pharmacological properties, such as antitumor, antidiabetic, and anti-microbes.
Juwairiah Remali +2 more
doaj +1 more source
Bioactive Marine Xanthones: A Review [PDF]
Marine Drugs, 2022 The marine environment is an important source of specialized metabolites with valuable biological activities. Xanthones are a relevant chemical class of specialized metabolites found in this environment due to their structural variety and their biological activities. In this work, a comprehensive literature review of marine xanthones reported up to now
José X. Soares +5 more
openaire +3 more sources
Anticancer activities of six selected natural compounds of some Cameroonian medicinal plants. [PDF]
PLoS ONE, 2011 BACKGROUND: Natural products are well recognized as sources of drugs in several human ailments. In the present work, we carried out a preliminary screening of six natural compounds, xanthone V(1) (1); 2-acetylfuro-1,4-naphthoquinone (2); physcion (3 ...
Victor Kuete +8 more
doaj +1 more source
International Journal of Food Properties, 2018 The aim of this study was to enhance aqueous solubility of xanthone with natural polymers using oil-in-water emulsion and complex coacervation as the microencapsulation techniques.
Li Yoke Ho +3 more
doaj +1 more source
5,8-Dihydroxy-2,2-dimethyl-12-(3-methylbut-2-enyl)pyrano[3,2-b]xanthen-6-one (brasixanthone B)
IUCrData, 2023 The title compound (trivial name brasixanthone B), C23H22O5, isolated from Calophyllum gracilentum, is characterized by a xanthone skeleton of three fused six-membered rings plus an additional fused pyrano ring and one 3-methylbut-2-enyl side chain.
Nurr Maria Ulfa Binti Seruji +6 more
doaj +1 more source
Xanthones from aerial parts of Juss
Natural Product Communications, 2013 From the aerial parts of Hypericum laricifolium Juss., twelve compounds were isolated and identified. They were the xanthones: 1-hydroxy-7-methoxy-xanthone ( 1 ), 1,7-dihydroxy-xanthone ( 2 ), 2-hydroxy-xanthone ( 3 ), 6-deoxyisojacareubin ( 4 ), 1,3 ...
Irama Ramírez-González +2 more
doaj +1 more source
Chlorine‐Free Depolymerization of Commercial PMMA via Oxygen‐Centered Radicals
Angewandte Chemie, EarlyView.A new chlorine‐free photothermal method enables sustainable recycling of plastics with C–C backbones under mild conditions. Driven by an oxygen‐centered radical pathway with ppm levels of anthraquinone catalyst, it eliminates hazardous chlorinated solvents, achieving an impressive 97% depolymerization conversion.
Chih‐Yin Lin +5 more
wiley +2 more sources