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Literatura académica sobre el tema "Cinnamic ester"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 12 de febrero de 2022

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Artículos de revistas sobre el tema "Cinnamic ester"

Tian, Yuxin, Weirui Liu, Yi Lu, Yan Wang, Xiaoyi Chen, Shaojuan Bai, Yicheng Zhao et al. "Naturally Occurring Cinnamic Acid Sugar Ester Derivatives". Molecules 21, n.º 10 (24 de octubre de 2016): 1402. http://dx.doi.org/10.3390/molecules21101402.

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Pálinkó, I. "Hydrogen-bonding interactions in the crystalline-phase structures of cinnamic acid derivatives". Acta Crystallographica Section B Structural Science 55, n.º 2 (1 de abril de 1999): 216–20. http://dx.doi.org/10.1107/s0108768198011823.

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Secondary interactions responsible for the crystalline-phase structures of various cinnamic acids and cinnamic acid esters drawn from the Cambridge Structural Database were studied with the help of the Cerius package implemented on an SGI workstation. Primarily hydrogen-bonding interactions were sought, but deviation from planarity was also measured. For the acids, the main structural feature is the strong hydrogen bonding between the carboxyl groups. The dimers are interconnected by C—H...O intermolecular hydrogen bonds. In most cases the C atom of the C—H unit was a member of the aromatic ring. Intramolecular (olefinic) C—H...O bonds were found to be frequent, fixing synperiplanar and antiperiplanar C=C—C=O conformations with about the same abundance in the acids and exclusively synperiplanar conformations in the esters. The carbonyl group of the ester is always involved in C—H...O hydrogen bonding. Here, the C atom of the C—H unit was either a member of the aromatic ring or the olefinic group, or was attached to the alcoholic O atom of the ester group. The β-phenyl and the carboxyl or the ester groups are almost coplanar. The crystals have a layered structure and in the most frequent parallel arrangement the phenyl groups are offset by varing amounts (but always to a small extent) in neighbouring layers. The common hydrogen bonds are mostly within a layer.

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Galabov, Angel S., Lubomira Nikolaeva, Daniela Todorova y Tsenka Milkova. "Antiviral Activity of Cholesteryl Esters of Cinnamic Acid Derivatives". Zeitschrift für Naturforschung C 53, n.º 9-10 (1 de octubre de 1998): 883–87. http://dx.doi.org/10.1515/znc-1998-9-1017.

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Cholesteryl 3”,4”-dimethoxycinnamate (7) and a new synthesized o-coumaroyl ester of 3β- (2’-hydroxyethoxy)-cholest-5-en (13) exhibited a marked activity against poliovirus type 1 (Mahoney). Compound 7 showed an approximately 20-fold greater selectivity in its antiviral activity than compound 13. These compounds were selected from thirteen steryl esters of cinnamic acid derivatives through an in vitro antiviral screening against viruses belonging to taxonomic groups with causative agents of important human infectious diseases to which chemotherapy is indicated, i.e. Picornaviridae, Orthomyxoviridae, Paramyxoviridae and Herpesviridae.

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Pizzo, Salvatore V., Denise Turner, Ned A. Porter y Steven L. Gonias. "Evaluation of p-Amidinophenyl Esters as Potential Antithrombotic Agents". Thrombosis and Haemostasis 56, n.º 03 (1986): 387–90. http://dx.doi.org/10.1055/s-0038-1661688.

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SummaryThree p-amidinophenyl esters have been synthesized and characterized as irreversible inhibitors of the vitamin-K dependent proteinases; factors IXa, Xa and thrombin (Turner et al. [4])+. In the present report we describe the in vitro and in vivo effects of these agents on standard coagulation tests in vitro and in blood from animals treated with the compounds. At a concentration of 500 μM, the three esters increased the activated partial thromboplastin time (PTT) of pooled human plasma 3 to 5-fold. The prothrombin time increased 1.4 to 3.7-fold under similar conditions. The p-amidinophenyl ester of cinnamic acid (CINN) showed the most pronounced effect on both assays. This ester also is the best inhibitor of human factors IXa and Xa, while the p-amidinophenyl ester of benzoic acid (BENZ) is a slightly better α-thrombin inhibitor (4). The effect of these esters on the thrombin clotting time correlated with in vitro kinetic measurements of α-thrombin inhibition rates. Both BENZ and CINN increased the assay endpoint more than 6-fold. The three esters also were studied using mouse plasma. A comparable effect on the PTT was noted. Intravenous administration of 300 αl of 1 mM CINN as a single bolus in mice caused a 2.3-fold increase in the PTT which remained 1.2-fold normal 2 h later. The BENZ and a-methyl-cinnamic acid (MECINN) esters were somewhat less effective as predicted from their in vitro effect on the PTT. This investigation and previous studies indicate that these compounds demonstrate low toxicity at therapeutic levels. It is concluded that the p-amidinophenyl esters may be useful in antithrombotic therapy.

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Redasani, Vivekkumar K., Amol B. Shinde y Sanjay J. Surana. "Anti-Inflammatory and Gastroprotective Evaluation of Prodrugs of Piroxicam". Ulcers 2014 (26 de agosto de 2014): 1–4. http://dx.doi.org/10.1155/2014/729754.

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Therapeutically potential prodrugs of piroxicam were synthesized by effective masking of enolic hydroxyl group through generation of ester congeners. The reaction facilitated using N,N′-dicyclohexylcarbodiimide coupled with acetic acid, benzoic acid, p-toluic acid, m-toluic acid, and cinnamic acid. Synthesized prodrugs were characterized for confirmation of the said structures. The modification of piroxicam showed better anti-inflammatory activity as evoked by all prodrugs. Interestingly, compound 3e, cinnamic acid ester prodrug, depicted 75 percent inhibition of rat paw edema as compared to 56 percent for parent piroxicam at 6 h of study. The present work proves the applicability not only with increased anti-inflammatory activity, but also with marked attenuation in ulcerogenicity. Novel prodrug 3e, cinnamic acid derivative, was found to be the least ulcerogenic having ulcer index of 0.67 as compared to parent drug piroxicam with 2.67.

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DellaGreca, Marina, Lucio Previtera, Raffaella Purcaro y Armando Zarrelli. "Cinnamic Ester Derivatives fromOxalis pes-caprae(Bermuda Buttercup)#". Journal of Natural Products 70, n.º 10 (octubre de 2007): 1664–67. http://dx.doi.org/10.1021/np0702786.

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Barontini, Maurizio, Roberta Bernini, Isabella Carastro, Patrizia Gentili y Annalisa Romani. "Synthesis and DPPH radical scavenging activity of novel compounds obtained from tyrosol and cinnamic acid derivatives". New J. Chem. 38, n.º 2 (2014): 809–16. http://dx.doi.org/10.1039/c3nj01180a.

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Sheng, Zhaojun, Siyuan Ge, Ximing Xu, Yan Zhang, Panpan Wu, Kun Zhang, Xuetao Xu, Chen Li, Denggao Zhao y Xiaowen Tang. "Correction: design, synthesis and evaluation of cinnamic acid ester derivatives as mushroom tyrosinase inhibitors". MedChemComm 9, n.º 5 (2018): 897. http://dx.doi.org/10.1039/c8md90024h.

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Marín-Zamora, María Elisa, Francisco Rojas-Melgarejo, Francisco García-Cánovas y Pedro Antonio García-Ruiz. "Cinnamic ester ofD-sorbitol for immobilization of mushroom tyrosinase". Journal of Chemical Technology & Biotechnology 80, n.º 12 (2005): 1356–64. http://dx.doi.org/10.1002/jctb.1334.

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Wang, Rui, Wei Yang, Yiqing Fan, Wim Dehaen, Yang Li, Huijing Li, Wei Wang, Qingxuan Zheng y Qiyong Huai. "Design and synthesis of the novel oleanolic acid-cinnamic acid ester derivatives and glycyrrhetinic acid-cinnamic acid ester derivatives with cytotoxic properties". Bioorganic Chemistry 88 (julio de 2019): 102951. http://dx.doi.org/10.1016/j.bioorg.2019.102951.

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Más fuentes

Tesis sobre el tema "Cinnamic ester"

Rosenhauer, Regina. "Lichtinduzierte Generierung von optisch anisotropen Filmen auf der Basis von multi-funktionalen Polymeren". Phd thesis, [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97411538X.

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Perny, Sébastien. "Alignement de cristaux liquides par irradiation en lumière linéairement polarisée de film minces de polymères photoréticulables". Cachan, Ecole normale supérieure, 1998. http://www.theses.fr/1998DENS0042.

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L'objectif de ce travail de thèse a été en premier lieu de concevoir et de synthétiser quatre polymères photosensibles utilisables industriellement comme films d'alignement des cristaux liquides. Dans un deuxième temps, des études par spectroscopie UV et IR ont permis de caractériser l'anisotropie et l'évolution de la composition de ces matériaux en cours d'irradiation en lumière linéairement polarisée. Dans le cas général, il a ainsi été possible de mettre en évidence la compétition de deux photo réactions : la cycloaddition 2+2 et l'isomérisation trans/cis. Ainsi, trois espèces cohabitent au sein du film de polymère irradié : les dimères, produits de la cycloaddition de chromophores agrégés ; les isomères cis, issus de l'isomérisation des chromophores isoles ; les chromophores initiaux qui n'ont pas réagi. De plus, nous avons pu constater que l'orientation préférentielle des chromophores inchangés était perpendiculaire a l'axe de polarisation et que, dans certains cas, les dimères étaient préférentiellement formes parallèlement a l'axe de polarisation. Enfin les propriétés d'alignement de ces matériaux ont été étudiés en confinant des cristaux liquides entre deux films de photopolymères irradies. Leur comportement a ensuite été compare a ceux du pvci et du poly(7-methacryloyloxycoumarine) afin de clarifier le mécanisme de photo alignement. Deux mécanismes ont du être envisages. Dans un cas, la sélectivité axiale des réactions photochimiques en lumière polarisée consomme les chromophores préférentiellement orientes le long de l'axe de polarisation. L'anisotropie du film est donc uniquement due à la présence de chromophores inchangés, initialement perpendiculaires à l'axe de polarisation, et le film induit un alignement homogène planaire suivant cet axe. Dans le deuxième cas, l'anisotropie du film est essentiellement due à la formation de dimères le long de l'axe de polarisation, et le film induit un alignement homogène planaire suivant l'axe de polarisation.

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Marín, Zamora María Elisa. "Inmovilización de tirosinasa sobre ésteres cinámicos de carbohidratos fotoentrecruzados : caracterización, optimización y aplicación a la obtención de o-difenoles". Doctoral thesis, Universidad de Murcia, 2013. http://hdl.handle.net/10803/116818.

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Se ha desarrollado un nuevo método de inmovilización de tirosinasa de champiñón, basado en la adsorción de esta enzima a un éster cinámico de un carbohidrato fotoentrecruzado, con muy buenos resultados. Se han obtenido inmovilizados de tirosinasa directamente a partir de extractos de champiñón. Se han estudiado los parámetros que afectan a la inmovilización (pH, tiempo y concentración de enzima), las características de tirosinasa inmovilizada (cantidad de enzima inmovilizada, actividad enzimática, pH y temperatura óptimos de reacción, estabilidad térmica, operacional y al almacenado), las propiedades cinéticas (constante de Michaelis, velocidad máxima y constante catalítica) de tirosinasa inmovilizada sobre distintos soportes al actuar sobre diversos sustratos y la estereoespecificidad de tirosinasa inmovilizada sobre un soporte quiral y otro no quiral respecto a los isómeros L y D y racémicos. Los conocimientos adquiridos se han aplicado con éxito a la producción de diversos o-difenoles como L-dopa, a partir de sus correspondientes monofenoles.
A new mushroom tyrosinase immobilization method consisting of tyrosinase adsorption on a photocrosslinked cinnamic carbohydrate ester has been developed with very good results. Immobilized tyrosinase was obtained directly from a mushroom extract. We studied the parameters affecting the immobilization process (pH, time and enzyme concentration), the properties of immobilized tyrosinase (quantity of immobilized enzyme, enzymatic activity, optimum pH and reaction temperature; thermal, operational and storage stability), kinetic properties (Michaelis constant, maximum steady-state rate and catalytic constant) of tyrosinase immobilized on several supports and acting over several substrates, and tyrosinase stereospecificity immobilized on a chiral and a nonchiral support acting on L and D isomers and racemics. The knowledge acquired was used to successfully produce several o-diphenols, such as L-dopa, from the corresponding monophenols.

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Hung, Yu-Ya y 洪玉雅. "Synthesis of Cinnamic Acid Esters As Potential Platelet Aggregation Inhibitor". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/30441416348909231878.

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碩士
台北醫學院
藥學研究所
81
Cafeetannins 及 polyphenolic caffeoylquinic acid 之衍生物,其廣泛分佈於植物中,其中一種活性成分methyl 3,4-dicaffeoyl- quinate被發現具強烈的抑制血小板凝集作用和抑制人類血小板throm- boxane之生合成.為了評估其化學構造與血小板凝集及 thromboxane 之生成抑制作用關係,擬以 methyl 3,4-dicaffeoylquinate 為化學合成目標, 製備多種類似化合物.我們利用 cinnamic acid, 3,4-dimethoxycinnamic acid, 3,4- methylenedioxycinnamic acid and caffeic acid 之 acyl chlorides 和一系列 aliphatic alcohols 和 phenolic　alcohols 反應而得 22 種產物. 1,3-dicinnamoylpropanediol (1), 1,3-di(3',4'- dimethoxy- cinnamoyl)propanediol (2), 1,3-di(3',4'- methlenedioxycinnamoyl) propanediol (3), 1,2-dicinnamoylpropanediol (4), 1,2-di(3',4'- dimethoxycinnamoyl)propanediol (5), 1,2-di(3',4'- methylenedioxy- cinnamoyl)propanediol (6), 1,2-dicinnamolcyclohexanediol (7), 1,2-di(3',4'- dimethoxycinnamoyl)cyclohexanediol (8), 1,2-di(3', 4'-methylenedioxycinnamoyl)cyclohexanediol (9), 1,2-dicinnamoyl- glycerol (10), 1,2-di(3',4'-dimethoxycinnamoyl) glycerol (12), methyl 3,4-dicinnamoylbenzoate (13),methyl 3,4-di(3',4'-methoxy- cinnamoyl)benzoate (14), methyl 3,4-di(3',4'-methylenedioxycin- namoyl)benzoate (15), methyl 3,4,5-tricinnamoylgallate (16), methyl 3,4,5-tri(3',4'- dimethoxycinnamoyl)gallate (17), methyl 3,4,5-tri(3',4'- methylenedioxycinnamoyl)gallate (18), methyl 3,4-dicinnamoyl-5- methoxybenzoate (19), methyl 3,4-di-(3',4'- dimethoxycinnamoyl)-5-methoxybenzoate (20), methyl 3,4-di(3',4'- methylenedioxycinnamoyl)-5-methoxybenzoate (21), 1,3-dicaffeoyl- propanediol (22).此 22 種目的化合物經紅外光譜, 氫譜, 碳譜及質譜光譜分析確定其化學結構, 其有關血小板凝集抑制之藥理作用正在試驗中. Cafeetannins are naturaly occurring polyphenolic caffeoyl- quinic acid derivatives.One of these compounds, methyl 3,4-dic- affeoylquinate,was found to be inhibitory toward platelet aggr- egation and thromboxane biosynthesis on human platelet. Therefore, several analoques modeled after methyl 3,4-dicaffeoylquinate were prepared by chemical synthesis in order to evaluate the relationship between their structures and antiplatelet and the thromboxane formation inhibitory activity. The acyl chloride derivatives of the substituted cinnamic acids, were reacted with a series dihydroxyl or trihydroxyl compounds of alcohols and phenols to yield 22 cinnamic acid esters. They are 1,3-dicinnamoylpropanediols (1),(2) and (3) , 1,2-dicinnamoylpropanediols (4),(5) and (6),1,2-dicinnamoyl- cyclohexanediols (7),(8) and (9),1,2-dicinnamoylglycerol (10), (11) and (12),methyl 3,4-dicinnamoylbenzoates (13),(14) and (15) , methyl 3,4,5-tricinnamoylgallates (16),(17) and (18), methyl 3,4-dicinnamoyl-5-methoxybenzoates (19),(20) and (21), 1,3-dicaffeoylpropanediol (22). The structures of these 22 compounds are consistant with the spectral data (UV, IR, PMR, CMR and Mass). The evaluation of platelet aggregation inhibitory activity is under investi- gated.

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Yang, Kuei-Chen y 楊貴蓁. "Evaluation of cinnamon oil mixing sugar ester on control of banana crown rot". Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5365006%22.&searchmode=basic.

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碩士
國立中興大學
植物醫學暨安全農業碩士學位學程
107
Banana is one of the important exporting fruits in Taiwan. However, the quantity of banana exporting to Japan is decreasing in recent years. Not only because banana is perishable and not easy to store for long period time, but also because the wound is easy to be infected by complex fungi during shipping process. Previous studies have demonstrated that essential oils have potential on control of postharvest diseases due to antifungal activities. Moreover, the coating with edible films could delay the ripening of fruits. In this study, emulsified cinnamon essential oil with sucrose fatty acid ester were examined for the ability on inhibition of three pathogens of banana crown rot, Colletotrichum musae (CR02), Fusarium incarnatum (CRFU4) and Lasiodiplodia theobromae (LT1), and the ability on prolonging the shelf life of bananas. The antifungal activity of emulsified cinnamon essential oil was tested by the volatile activity against three pathogens. The results showed that 1% emulsified cinnamon essential oil could inhibit the mycelium growth of CR02 and LT1 to 31.9% and 21.6%, respectively, but it was not effective on inhibition of CRFU4. The inhibition rates of mycelium growth of the three pathogens were increased from 41.1% to 100% when the concentration of emulsified cinnamon oil at 3%. In addition, the emulsified cinnamon essential oil added to PDA medium showed that 0.025% cinnamon oil emulsion could inhibit the mycelium growth of CR02, CRFU4 and LT1 to 74.6%, 40.8% and 53.2%, respectively. All of the three pathogens could be inhibited completely at 0.05%. For spore germination test, the spore germination rate of CR02 and CRFU4 were 39.6% and 76.2% at 0.05% emulsified cinnamon essential oil, and the spore germination rate were 98.6% and 100% at 0.1%. In this study, the sensitivity of the three pathogens to Benomyl the EC50 of CR02 and LT1 were under 1 ppm and CRFU4 was 297.8 ppm. The phytotoxicity test showed that 0.1% emulsified cinnamon essential oil could cause browning on the peel and 2% of sucrose fatty acid ester did not damage bananas in spite of high value of pH. The efficacy test of emulsified cinnamon essential oil, sucrose fatty acid ester and the mixture of cinnamon essential oil emulsion and sucrose fatty acid ester on control of crown rot after inoculated CR02 and CRFU4 indicated that 0.025% emulsified cinnamon essential oil had the could reduce the crown rot decay of bananas, but it was not effective on delaying the color change of peels. Moreover, sucrose fatty acid ester could decrease the development of crown rot disease and the color change of peels. However, the 0.025% cinnamon essential oil mixed with 1% sucrose fatty acid ester did not had efficacy on control of crown rot. This study showed the emulsified cinnamon essential oil and sucrose fatty acid ester have potential to control banana crown rot disease. However, it is necessary to develop best formulation between cinnamon essential oil and sucrose fatty acid ester in future.

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Capítulos de libros sobre el tema "Cinnamic ester"

Dalton, David R. "A Selection of Grapes". En The Chemistry of Wine. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687199.003.0024.

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This undistinguished, productive, drought resistant, vigorous white grape, Airén, from the La Mancha region of Spain, was said to be the most widely planted grape in the world. In part the justification for this claim relies upon the observation that it is planted at a very low density! Except for its use in blending to make other wines “lighter,” it has not found wide accep¬tance. In part, it appears that its lack of popularity is the result of what is reported to be a mild, neutral flavor, and advertising has not pushed wines produced from it to the fore. Although it is now common to attempt to analyze the headspace (or ullage) in bottled wine (as well as the wine itself ) by chromatographic and mass spectrometric techniques it is less common to find that the grapes (skin, must, and seeds) are also subjected to such analysis. Nonetheless, the phenolic composition of V. vinifera var Airén was subjected to just such analysis during ripening from véraison to “technological” maturity (i.e., maturity which might actually be earlier than harvest, the latter being the decision of the viticulturist and vintner). The analysis of the ethyl ether extract of macerated skins, seeds, and accumulated solids (the pomace) was undertaken. Procyanidins and anthocyanins which would (the authors claim) interfere with subsequent analysis would not move into the ether phase. It was also found (using controls) that other highly polar materials (e.g., carboxylic acids) were only poorly extracted from the macerated skins and seeds. The isolated compounds and some information about their sources are provided in Figures 14.1 and 14.2. The analysis of the seeds, skin, and must did lead to the conclusion that “the maximum concentrations of benzoic and cinnamic acids and aldehydes and flavonol aglycones and glycosides at the end of the ripening period did not coincide with the minimum concentrations of the flavan-3-ols and hydroxycinnamic tartaric esters.” Depending upon what was sought, this information might thus affect decisions concerning the harvest date.

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