Relevant bibliographies by topics / Phenylcoumarone

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  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Phenylcoumarone'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Phenylcoumarone"

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Li, S., та K. Lundquist. "Acid Reactions of Lignin Models of β-5 Type". Holzforschung 53, № 1 (1999): 39–42. http://dx.doi.org/10.1515/hf.1999.007.

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Summary Refluxing of trans–2-(3,4-dimethoxyphenyl)-3-hydroxymethyl-7-methoxy-2,3-dihydrobenzo[b]furan with dioxane-water (9 : 1) in the presence of various acid catalysts led to the formation of 2-(3,4-dimethoxyphenyl)- 7-methoxy-3-methylbenzo[b]furan, the trans and cis forms of 2-hydroxy-3,3′4′-trimethoxystilbene and cis–2-(3,4-dimethoxyphenyl)-3-hydroxymethyl-7-methoxy-2,3-dihydrobenzo[b]furan. The proportions of the products were strongly dependent on the particular acid used as catalyst. HCl and to a greater extent HBr favored the formation of the 2-arylbenzofuran (phenylcoumarone) while t
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Li, Suxiang, Chengke Zhao, Fengxia Yue та Fachuang Lu. "Revealing Structural Modifications of Lignin in Acidic γ-Valerolactone-H2O Pretreatment". Polymers 12, № 1 (2020): 116. http://dx.doi.org/10.3390/polym12010116.

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γ-valerolactone (GVL)/H2O/acid solvent mixtures has been used in chemical pretreatment of lignocellulosic biomass, it was claimed that GVL lignins were structurally close to proto (native) lignins, or having low molecular weight with narrow polydispersity, however, the structural changes of GVL lignins have not been investigated. In this study, β-O-4 (β-aryl ether, GG), β-5 (phenylcoumaran), and β-β (resinol) lignin model compounds were treated by an acidic GVL-H2O solvent system, a promising pretreatment of lignocellulose for biomass utilization, to investigate the structural changes possibly
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Lahive, Ciaran W., Christopher S. Lancefield, Anna Codina, Paul C. J. Kamer, and Nicholas J. Westwood. "Revealing the fate of the phenylcoumaran linkage during lignin oxidation reactions." Organic & Biomolecular Chemistry 16, no. 11 (2018): 1976–82. http://dx.doi.org/10.1039/c7ob03087h.

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Turhanen, Petri A., Liisa P. Nousiainen, and Juri M. Timonen. "3-(3-Bromophenyl)-7-acetoxycoumarin." Molbank 2022, no. 4 (2022): M1513. http://dx.doi.org/10.3390/m1513.

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In natural product synthesis, the procurement of easily accessible starting materials is crucial. Chromenones and their subclass, coumarins, are a wide family of small, oxygen-containing aromatic heterocycles. Phenylcoumarins offer a particularly excellent starting point for a diverse chemical space of natural products, and thus are excellent staring materials for more complex natural products. Herein, we report an efficient synthesis of an easily accessible 3-phenylcoumarin bearing two orthogonally substitutable groups, bromine, and an acetyl-protected phenylic hydroxyl group.
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Noutary, C., P. Fornier de Violet, J. Vercauteren, and A. Castellan. "Photochemical studies on a phenolic phenylcoumarone lignin model molecule in relation to the photodegradation of lignocellulosic materials. Part 1. Structure of the photoproducts." Research on Chemical Intermediates 21, no. 3-5 (1995): 223–45. http://dx.doi.org/10.1007/bf03052255.

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Noutary, C., P. Fornier de Violet, J. Vercauteren, and A. Castellan. "Photochemical studies on a phenolic phenylcoumarone lignin model molecule in relation to the photodegradation of lignocellulosic materials. Part 2. Photophysical and photochemical studies." Research on Chemical Intermediates 21, no. 3-5 (1995): 247–62. http://dx.doi.org/10.1007/bf03052256.

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Matos, Maria J., Lourdes Santana, and Eugenio Uriarte. "3-Phenylcoumarin." Acta Crystallographica Section E Structure Reports Online 68, no. 9 (2012): o2645. http://dx.doi.org/10.1107/s1600536812034277.

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Kamat, Shrivallabh P., Asha M. D'Souza, Shashikumar K. Paknikar, and Philip S. Beauchamp. "A Convenient One-Pot Synthesis of 4-Methyl-3-Phenyl-, 3-Aryl- and 3-Aryl-4-Phenylcoumarins." Journal of Chemical Research 2002, no. 5 (2002): 242–46. http://dx.doi.org/10.3184/030823402103171834.

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Thermal condensation of 2′-hydroxyacetophenones 1a–e with phenylacetic acid 2a in refluxing diphenyl ether gives 4-methyl-3-phenylcoumarins 3a–e. Similarly, reaction of 2-hydroxybenzaldehydes 1f–m and 2-hydroxybenzo-phenones 1n–p with phenylacetic acids 2a–d gives the corresponding 3-arylcoumarins 3f–m and 3-aryl-4-phenylcoumarins 3n–p respectively. Formation of esters 4 and 5 and benzofuran 6 is also observed.
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P., L. Majumder, Chatterjee (nee Lahiri) S., and Mukhoti N. "The reactions of phenols with a,,B-unsaturated aromatic acids in presence of polyphosphoric acid : synthetic and mechanistic studies." Journal of Indian Chemistry Society Vol. 78, October-December 2001 (2001): 743–55. https://doi.org/10.5281/zenodo.5897928.

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Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India <em>Manuscript received 30 August 2001</em> The reactions of cinnamic acid with phenol itself, catechol, hydroquinone, pyrogallol and 2-naphthol in presence PPA were studied and that with resorcinol was reinvestigated. With phenol itself and hydroquinone were obtained 3,4-dihydro-4- phenylcoumarin (1r) and 6-hydroxy-3,4-dihydro-4-phenylcoumarin (1s), respectively, as the sole products. Catechol and pyrogallol, on the other hand, afforded, besides the corresponding 3,4-dihydrocoumar
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P., L. Majumder, Chatterjee (née Lahiri) S. та Mukhoti N. "The reactions of phenols with α,β-unsaturated aromatic acids in presence of polyphosphoric acid : synthetic and mechanistic studies". Journal of Indian Chemical Society Vol. 78, Oct-Dec 2001 (2001): 743–55. https://doi.org/10.5281/zenodo.5912831.

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Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India <em>Manuscript received 30 August 2001</em> The reactions of cinnamic acid with phenol itself, catechol, hydroquinone, pyrogallol and 2-naphthol in presence<strong> </strong>PPA were studied and that with resorcinol was reinvestigatcd. With phenol itself and hydroquinone were obtained 3,4-dihydro-4- phenylcoumarin (1r) and 6-hydroxy-3,4-dihydro-4-phenylcoumarin (1s), respectively, as the sole products. Catechol and pyrogallol, on the other hand, afforded, besides the corresponding
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Dissertations / Theses on the topic "Phenylcoumarone"

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Reis, Tâmara Vieira. "Neoflavonóides e xantonas de Kielmeyera coriacea (Clusiaceae)." Instituto de Química, 2010. http://repositorio.ufba.br/ri/handle/ri/20286.

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Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2016-09-08T13:27:28Z No. of bitstreams: 1 Dissertação-Tâmara V. Reis 2010.pdf: 19348303 bytes, checksum: b427ed6600aabe45a3f60838670def9b (MD5)<br>Approved for entry into archive by Vanessa Reis (vanessa.jamile@ufba.br) on 2016-09-08T13:44:47Z (GMT) No. of bitstreams: 1 Dissertação-Tâmara V. Reis 2010.pdf: 19348303 bytes, checksum: b427ed6600aabe45a3f60838670def9b (MD5)<br>Made available in DSpace on 2016-09-08T13:44:47Z (GMT). No. of bitstreams: 1 Dissertação-Tâmara V. Reis 2010.pdf: 19348303 bytes, checksum: b427ed6600aabe45a3f60838670
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Andrade, Micássio Fernandes de. "Estudo da atividade antioxidante de derivados 3-fenilcumarínicos no metabolismo oxidativo de neutrófilos humanos estimulados por complexos imunes." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/17/17147/tde-16052012-203921/.

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A produção de espécies reativas de oxigênio (ERO) pelos neutrófilos, que representa um mecanismo essencial da imunidade inata contra agentes infecciosos, pode ser desencadeada por imunocomplexos (IC) associados ou não com componentes do sistema complemento. Os IC são normalmente eliminados da circulação pela ligação aos receptores de complemento do tipo 1 em eritrócitos, que os transportam até o baço e o fígado, onde são fagocitados por macrófagos residentes. Porém, defeitos neste mecanismo de eliminação podem levar à deposição de IC nos vasos e tecidos. Em algumas doenças inflamatórias, onde
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Lima, Sandovânio Ferreira de. "Constituintes químicos e avaliação das atividades antioxidante, anticolinesterásica e antiinflamatória cutânea de Coutarea hexandra (Jacq.) k. Schum. (Rubiaceae)." Universidade Federal de Alagoas, 2009. http://www.repositorio.ufal.br/handle/riufal/2512.

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This work describes the isolation and structural elucidation of some chemical constituents as well as antioxidant, anticholinesterasic and skin anti-inflammatory activities of extracts and some of the isolated compounds from Coutarea hexandra (Jacq.) K. Schum. (Rubiaceae). In the antioxidant assays, extracts from roots and leaves, when compared to positive controls used, free scavenger radical and inhibited the formation of peroxide of the linoleic acid. In the anticholinesterase and anti-inflammatory assays, at 0.6 mg/ear, some extracts from roots were effective in inhibiting the effects of t
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Andrade, Micássio Fernandes de. "Estudo do efeito imunomodulador do derivado 3-fenilcumarínico 6,7-diidroxi-3-[3',4'-metilenodioxifenil]-cumarina em neutrófilos humanos estimulados e em modelo animal de inflamação induzida por zimosan." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/17/17147/tde-06012017-145630/.

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Os neutrófilos são os leucócitos circulantes mais abundantes. Apesar de serem importantes no combate às infecções, o intenso recrutamento e a consequente ativação dessas células levam à liberação de mediadores inflamatórios que estão relacionados com o agravamento do quadro clínico de inúmeras doenças. Dessa forma, nos últimos anos tem-se intensificado a procura por substâncias terapêuticas que minimizem os danos teciduais ocasionados pela infiltração neutrofílica. Estudos prévios do grupo de pesquisa mostraram que as 3-fenilcumarinas, que constituem uma classe de produtos naturais de origem v
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Teng, Ming-An, and 鄧明安. "Experimental antioxidant activity of 4-phenylcoumarin analogues." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/61360018866279059871.

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Conference papers on the topic "Phenylcoumarone"

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Delogu, Giovanna, Silvia Serra, and Dolores Viña. "Mao Inhibitory Activity: 3-Phenylcoumarins versus 4-Hydroxy-3-Phenylcoumarins." In The 17th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-b023.

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Matos, Maria João, Benedetta Era, Giovanna Delogu, Francesca Pintus, and Antonella Fais. "In the search of new xanthine oxidase inhibitors: 3-Phenylcoumarins versus 2-phenylbenzofurans." In 5th International Electronic Conference on Medicinal Chemistry. MDPI, 2019. http://dx.doi.org/10.3390/ecmc2019-06310.

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Seijas, Julio, M. Pilar Vázquez-Tato, and José Crecente-Campo. "Synthesis of 4-phenylcoumarin from 2-hydroxybenzophenone imine and diethyl malonate by microwave assisted Knoevenagel condensation." In The 13th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2009. http://dx.doi.org/10.3390/ecsoc-13-00161.

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