Dibenzoylmethane
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Allyl Dibenzoylmethane Derivative: Antimelanoma Activity and Study of Its Molecular Mechanism of Interaction with DNA
In this study, we assessed the cytotoxic effect of 1,3-diphenyl-2-allyl-1,3-propanedione (DPAP) on B16F10 and Tm5 melanoma cells and investigated its interaction with DNA (deoxyribonucleic acid) using optical tweezers. The compound showed to be effective against B16F10 cells with selectivity index (SI) of 7.92 and interaction to the outer surface of the doub
J. Braz. Chem. Soc.. Publicado em: 2021-07
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2. Antiproliferative Activity of Dibenzoylmethanes from Root Bark of Muellera filipes (Benth) M.J. Silva & A.M.G. Azevedo
Three new dibenzoylmethane derivatives, (E)-3,4-methylenedioxy-2'-methoxy-2'',2''-dimethylpyrano-(5'',6'':3',4')-7-methoxychalcone, 2'-hydroxy-5'(3'''',3''''-dimethylallyl)-8-(α,α-dimethylallyl)-furano-(4'',5'':3'4')-dibenzoylmethane and 2'-O-(3'',3''-dimethylallyl)-8-(α,α-dimethylallyl)-furano-(4'',5'':3'4')-dibenzoylmethane, were isolated from a dichlo
J. Braz. Chem. Soc.. Publicado em: 2017-08
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3. Materiais híbridos orgânico-inorgânicos (ormosil) obtidos por sol-gel com potencial uso como filtro solar
This work aimed at the synthesis and characterization of particles of modified silica containing the organic filter dibenzoylmethane (DBM) by the hydrolytic sol-gel method, with modifications to the Stöber route. The structures of the resulting Xerogels were characterized by diffuse reflectance UV-VIS spectroscopy in the solid state, infrared absorption spe
Química Nova. Publicado em: 2011
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4. Toxicidade e atividade antioxidante de flavonoides das cascas das raízes de Lonchocarpus filipes
The phytochemical investigation of dichloromethane extract from root bark of Lonchocarpus filipes Benth (Leguminosae) afforded four flavonoids including three dibenzoylmethane derivatives rarely found in nature. The structures were established based on their spectral data (¹H and 13C NMR, 2D-NMR) as being: lanceolatin B (1), pongamol (2), (E)-7-O-methylpong
Química Nova. Publicado em: 2009
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5. Complexos de dibenzoilmetanatos de terras raras com ligantes R2S=O utilizados como emissores em dispositivos eletroluminescentes / Rare earth complexes with dibenzoylmethanate and R2S=O ligands used as emitting layer in electroluminescent devices
Este trabalho apresenta a síntese e os estudos foto e eletroluminescentes dos complexos de β-dicetonatos (dibenzoilmetanato -DBM) de terras raras trivalentes (TR=Eu3+, Sm3+ e Gd3+) hidratados e contendo ligantes sulfóxidos (L= dibenzilsulfóxido - DBSO, dimetisulfóxido - DMSO, difenilsulfóxido - DPSO e p-toluilsulfóxido - PTSO). Os complexos obtido
Publicado em: 2004
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6. Efeitos de extratos de plantas e inseticidas de segunda e terceira gerações em populações de Musca domestica (Diptera: Muscidae)
In this study, the larvicidal activities of 20 organic extracts of plants ftom the family Fabaceae (Leguminosae) and of Pongamol (derived ftom dibenzoylmethane) isolated ftom petroleum ether extracts of the roots of Lonchocarpus montanus AM. G. de AzevedoTozzi, as well as 10 aqueous extracts of plants ftom different families, and two oils and a soap ftom Aza
Publicado em: 2003
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7. Propriedades fotofísicas de Eu3+ e Tb3+ imobilizados em sílica gel funcionalizada com beta-Dicetonas
Synthetic procedures, characterization and luminescent properties of Eu3+ and Tb3+ ions supported on silica gel functionalized with beta-diketones are presented. The functionalization with propyl benzoyltrifluoroacetone (BPG), dibenzoylmethane (DBM) and hexafluoroacetone (HPG), leads to new luminescent materials which photophysical properties depend on the g
Química Nova. Publicado em: 2000-02
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8. Licodione Synthase, a Cytochrome P450 Monooxygenase Catalyzing 2-Hydroxylation of 5-Deoxyflavanone, in Cultured Glycyrrhiza echinata L. Cells.
Cultured Glycyrrhiza echinata L. (Leguminosae) cells produce a retrochalcone echinatin (4,4[prime]-dihydroxy-2-methoxychalcone) and its biosynthetic intermediate licodione [1-(2,4-dihydroxyphenyl)-3-(4-hydroxyphenyl)-1,3-propanedione, a dibenzoylmethane (keto form) or its enol tautomer ([beta]-hydroxychalcone)], when treated with elicitor-active substances,
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9. The C-Glycosylation of Flavonoids in Cereals*♦
Flavonoids normally accumulate in plants as O-glycosylated derivatives, but several species, including major cereal crops, predominantly synthesize flavone-C-glycosides, which are stable to hydrolysis and are biologically active both in planta and as dietary components. An enzyme (OsCGT) catalyzing the UDP-glucose-dependent C-glucosylation of 2-hydroxyflavan
American Society for Biochemistry and Molecular Biology.