Results 61 to 70 of about 52,286 (257)
Marine Drugs, 2016 Two new diphenylketones (1 and 2), a new xanthone (3), and a known xanthone analogue (4) were isolated and identified from Talaromyces islandicus EN-501, an endophytic fungus obtained from the fresh collected marine red alga Laurencia okamurai.
Hong-Lei Li +4 more
doaj +1 more source
Novel Xanthone Derivatives Impair Growth and Invasiveness of Colon Cancer Cells In Vitro
Biomolecules, 2021 Natural xanthones are a large group of compounds from which promising anticancer properties could be further developed by chemical modifications. This study aimed to investigate the influence of four novel xanthone derivatives based on a naturally ...
Jakub Rech +7 more
doaj +1 more source
Induction of phenolic compounds in Hypericum perforatum L. cells by colletotrichum gloeosporioides elicitation [PDF]
, 2006 Changes in phenolic metabolism after elicitation with Colletotrichum gloeosporioides (CG) has been studied in Hypericum perforatum L. (HP) cell suspension cultures. Soluble phenolics were analysed by HPLC–DAD and HPLC–DAD–MS/MS. HP cultures elicited with
Conceição, Luís F. R. +3 more
core +1 more source
The Potential of Phytochemicals to Overcome Multidrug Resistance in Metastatic Melanoma
Chemistry &Biodiversity, Volume 23, Issue 1, January 2026.ABSTRACT Metastatic melanoma is the most lethal form of skin cancer, accounting for most skin cancer‐related deaths. Immunotherapies and targeted therapies have improved overall and progression‐free survival rates in metastatic melanoma patients. The effectiveness of these therapies decreases due to multidrug resistance (MDR).
Jacqueline Maphutha +4 more
wiley +1 more source
Etudes des xanthones dans les feuilles de Gentiana bavarica L. : Communication préliminaire
CHIMIA, 1973 Ten xanthones have been isolated from the leaves of Gentiana bavarica L. by means of thin layer and column chromatography. The xanthones VI to X are new heterosides ; the determination of their structures will be described in a later paper.
Kurt Hostettmann +2 more
doaj +1 more source
Potency of Xanthone Derivatives as Antibacterial Agent Against Methicillin-Resistant Staphylococcus Aureus (MRSA) [PDF]
, 2017 Antibiotic resistance is increasing worldwide and becoming a serious problem for the treatment of patients and also affecting their economy. One instance of bacteria that is resistant to the antibiotic is Methicillin- Resistant Staphylococcus aureus ...
Miladiyah, I. (Isnatin) +1 more
core +2 more sources
Chemistry &Biodiversity, Volume 23, Issue 1, January 2026.ABSTRACT This study investigated the phytochemical profile, cytotoxicity, and anti‐herpetic activity of the hydroethanolic extract from Scoparia dulcis L. aerial parts. Mass spectrometry revealed the presence of 15 compounds. The extract showed low cytotoxicity in Vero cells, maintaining over 80% viability at concentrations up to 250 µg/mL.
Francisco Leandro Medeiros de Lucena Jales +9 more
wiley +1 more source
Phytochemicals and Biological Activities of Garcinia morella (Gaertn.) Desr.: A Review
Molecules, 2020 Garcinia morella (Gaertn.) Desr. is an evergreen tree that yields edible fruits, oil, and resin. It is a source of “gamboge”, a gum/resin that has a wide range of uses. The fruits, leaves, and seeds of this tree are rich in bioactive compounds, including
Hosakatte Niranjana Murthy +3 more
doaj +1 more source
Xanthones from Polygala alpestris (Rchb.)
Zeitschrift für Naturforschung C, 2004 Bioactivity-guided fractionation of Polygala alpestris L. (Rchb.) extracts led to the identification of two new xanthones, 1,3,7-trihydroxy-2,6-dimethoxyxanthone (1) and 2,3-methylenedioxy-4,7-dihydroxyxanthone (2). In addition five known compounds 3,4-dimethoxy-1,7-dihydroxyxanthone (3), 1,3-dihydroxy-7-methoxyxanthone (4), 1,7-dihydroxy-2,3 ...
Dall'Acquaa, Stefano +3 more
openaire +3 more sources
Antitumor Activity of Some Prenylated Xanthones [PDF]
Pharmaceuticals, 2009 Pyranoxanthones 6-8 were obtained by dehydrogenation of the respective dihydropyranoxanthones 3-5 with DDQ in dry dioxane. Two prenylated xanthones 10,11 were obtained from the reaction of 1-hydroxyxanthone (9) with prenyl bromide in alkaline medium, or by condensation of xanthone 9 with isoprene in the presence of orthophosphoric acid.
Raquel A.P. Castanheiro +4 more
openaire +4 more sources