Results 91 to 100 of about 11,180 (215)

Determinação da constante de velocidade absoluta para a reação de abstração de hidrogênio fenólico pelo estado excitado triplete de xantona em acetonitrila e no líquido iônico hexafluorfosfato de 1-butil-3-metil-imidazólio [bmim.PF6] Determination of absolute rate constant for the phenolic hydrogen abstraction reaction by the triplet excited state of xanthone in acetonitrile and in ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [bmim.PF6]

Química Nova, 2013
The triplet excited state of xanthone was generated and characterized by laser flash photolysis in acetonitrile (λmax=620 nm; t=1.8 ms) and in ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [bmim.PF6] (λmax=620 nm; t=3.0 ms).
Ada Ruth Bertoti, José Carlos Netto-Ferreira   +1 more
doaj  

DI-XANTHONES. PART I. CHROMONO-2' : 3'-2 : 3-XANTHONE

, 1957
2 : 5-Diphenoxytereplithalic acid, prepared by condensing 2 : 5-dibromoterephthalic acid with sodium phenoxide, using excess of phenol as a solvent or a diluent, in presence of capper powder, has been cyclised by two different methods to yield chromono-2' : 3-2: 3-xanthone.
TARA SINGH, S. N. BEDI
openaire   +1 more source

Anti-Inflammatory Properties of Oxygenated Isocoumarins and Xanthone from Thai Mangrove-Associated Endophytic Fungus Setosphaeria rostrata

Molecules
Chronic inflammation plays a crucial role in the development and progression of numerous chronic diseases. To search for anti-inflammatory metabolites from endophytic fungi isolated from plants growing in Thai mangrove areas, a chemical investigation of ...
Kedkarn Koopklang, Siwattra Choodej, Sujitra Hantanong, Ratchadaree Intayot, Siriporn Jungsuttiwong, Yuwadee Insumran, Nattaya Ngamrojanavanich, Khanitha Pudhom   +7 more
doaj   +1 more source

Xanthones and Cancer

, 2020
Xanthones are a class of heterocyclic natural products that have been widely studied for their pharmacological potential. In fact, they have been serving as scaffolds for the design of derivatives focusing on drug development. One of the main study targets of xanthones is their anticancer activity. Several compounds belonging to this class have already
Klein-Júnior, Luiz C, Campos, Adriana, Niero, Rivaldo, Corrêa, Rogério, Yvan, Vander Heyden, Filho, Valdir Cechinel   +5 more
openaire   +1 more source

ANTIOXIDANT ACTIVITY OF XANTHONE DERIVATIVES.

Acta poloniae pharmaceutica, 2016
Certain xanthone derivatives, such as these present in mangosteen fruits, show strong antioxidant activity. On the other hand, evidences accumulated that oxidative stress is involved in epileptogenesis. Therefore, the aim of the present study was to estimate total antioxidant capacity (expressed as a ferric reducing antioxidant power - FRAP) and ...
Francik, Renata, Szkaradek, Natalia, Żelaszczyk, Dorota, Marona, Henryk   +3 more
openaire   +2 more sources

Xanthone Derivatives and Their Potential Usage in the Treatment of Telangiectasia and Rosacea

Applied Sciences
Xanthone derivatives, a class of natural compounds abundantly found in plants such as mangosteen (Garcinia mangostana) and certain herbs, have garnered substantial interest due to their diverse pharmacological properties, including antioxidant, anti ...
Katarzyna Brezdeń, Anna M. Waszkielewicz   +1 more
doaj   +1 more source

Tissue-specific biosynthesis and spatial distribution of xanthones in Garcinia oblongifolia revealed by integrated metabolomic and full-length transcriptomic analyses. [PDF]

BMC Genomics
Zhang Y, Zhang R, Wang B, Dai X, Yan X, Liu X, Yang L, Liu B, Jin H, Liu L, Liu Y.   +10 more
europepmc   +1 more source

Mangosteen (<i>Garcinia mangostana</i>) Pericarp and Leaf Tinctures Inhibit LPS-Induced Pro-Inflammatory Responses in Macrophages and Activate Nrf2. [PDF]

Nutrients
Tocmo R, Nauman MC, Huang Y, Subedi P, Johnson JJ.   +4 more
europepmc   +1 more source

Dual omics comparison: how Agrobacterium tumefaciens and Agrobacterium rhizogenes modulate gene expression and metabolism in Hypericum perforatum L. [PDF]

BMC Genomics
Selvakesavan RK, Nuc M, Pradeep M, Krajewski P, Franklin G.   +4 more
europepmc   +1 more source

Unlocking Mangiferin: A Therapeutic Candidate Revolutionizing Liver Disease Therapy. [PDF]

Nutrients
Xie J, Su S, Wu J, Yang X, Zhang Q, Shen X, Zhao L, Wang T, Feng N, Su J, Zhang Y.   +10 more
europepmc   +1 more source