Literatura académica sobre el tema "Coumarin ring"
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Artículos de revistas sobre el tema "Coumarin ring"
Prahadeesh, N., Maheswaran Sithambaresan y Umaramani Mathiventhan. "A Study on Hydrogen Peroxide Scavenging Activity and Ferric Reducing Ability of Simple Coumarins". Emerging Science Journal 2, n.º 6 (13 de diciembre de 2018): 417. http://dx.doi.org/10.28991/esj-2018-01161.
Texto completoMohan, Resmi, M. Vidhyalakshmi y Venkatasubramanian Sivakumar. "Microwave Assisted Rapid Extraction and Characterization of Coumarin from Fig Plant (Ficus carica)". Asian Journal of Science and Applied Technology 8, n.º 1 (5 de mayo de 2019): 1–4. http://dx.doi.org/10.51983/ajsat-2019.8.1.1043.
Texto completoYoon, Jeong A. y Young Taek Han. "Efficient Synthesis of Pyrido[3,2-c]coumarins via Silver Nitrate Catalyzed Cycloisomerization and Application to the First Synthesis of Polyneomarline C". Synthesis 51, n.º 24 (30 de septiembre de 2019): 4611–18. http://dx.doi.org/10.1055/s-0037-1610730.
Texto completoKumari, Sumita, Amit Sharma y Sonia Yadav. "Pharmacological Potential of Coumarin-Based Derivatives: (A Comprehensive Brief Review)". Oriental Journal Of Chemistry 39, n.º 3 (30 de junio de 2023): 568–76. http://dx.doi.org/10.13005/ojc/390304.
Texto completoMedyouni, Rawdha, Olfa Naouali, Naceur HAMDI y Lassaad Baklouti. "Coumarin phthalonitriles: Synthesis and cation binding properties". JOURNAL OF ADVANCES IN CHEMISTRY 11, n.º 4 (9 de marzo de 2015): 3512–18. http://dx.doi.org/10.24297/jac.v11i4.6695.
Texto completoCheke, Rameshwar S., Harun M. Patel, Vaishali M. Patil, Iqrar Ahmad Ansari, Jaya P. Ambhore, Sachin D. Shinde, Adel Kadri et al. "Molecular Insights into Coumarin Analogues as Antimicrobial Agents: Recent Developments in Drug Discovery". Antibiotics 11, n.º 5 (24 de abril de 2022): 566. http://dx.doi.org/10.3390/antibiotics11050566.
Texto completoThakur, Abhinay, Rohit Sharma, Vivek Sheel Jaswal, Eugenie Nepovimova, Ashun Chaudhary y Kamil Kuca. "Psoralen: A Biologically Important Coumarin with Emerging Applications". Mini-Reviews in Medicinal Chemistry 20, n.º 18 (7 de diciembre de 2020): 1838–45. http://dx.doi.org/10.2174/1389557520666200429101053.
Texto completoJalhan, Sunny. "Review Article: Various Biological Activities of Coumarin and Oxadiazole Derivatives." Asian Journal of Pharmaceutical and Clinical Research 10, n.º 7 (1 de julio de 2017): 38. http://dx.doi.org/10.22159/ajpcr.2017.v10i7.18461.
Texto completoSanaryh Mohammed Al-awad, Leaqaa Abdalredha raheem y Ausama Ayob Jaccob. "Synthesis and Pharmacological Evaluation of Novel Coumarin Derivatives". International Journal of Research in Pharmaceutical Sciences 11, n.º 1 (27 de enero de 2020): 865–74. http://dx.doi.org/10.26452/ijrps.v11i1.1908.
Texto completoZeydi, Masoud Mohammadi, Seyed Jafar Kalantarian y Zahra Kazeminejad. "Overview on developed synthesis procedures of coumarin heterocycles". Journal of the Iranian Chemical Society 17, n.º 12 (27 de junio de 2020): 3031–94. http://dx.doi.org/10.1007/s13738-020-01984-1.
Texto completoTesis sobre el tema "Coumarin ring"
Trécourt, François. "Elaboration de dérivés carbonylés orthosubstitués de la pyridine : application d'une nouvelle méthode de synthèse de pyridines, synthèse d'hétérocycles du type coumarine et xanthone". Rouen, 1987. http://www.theses.fr/1987ROUES021.
Texto completoSAKELLARIOU, FARGUES REINE. "Reactivite chimique et photochimique d'alpha -enones dans les milieux organises". Toulouse 3, 1986. http://www.theses.fr/1986TOU30044.
Texto completoLin, Li y 林立. "Synthesis and Biological Evaluation of Coumarin-3-Carboxamide Derivatives via Ring-Opening Reaction of Coumarin-3-Activated Aziridines". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/51699927764062756603.
Texto completo臺北醫學大學
藥學系
94
Coumarin is important structure of organic chemistry and belongs to the benzopyrones. Coumarins are widely distributed in plants and have a variety of bioactivities including anticoagulation, estrogenic, dermal photosensitizing, antimicrobial, antioxidation, vasodilation, antithelmintic, sedative and hypnotic, analgesic and hypothermic activities. Aziridine is a class of compound important both in chemical synthesis and in chemotherapy of cancer. Ring opening of 2-methyl-N-acylaziridine by various nucleophiles has been reported. Nucleophilic attack at the unsubstituted carbon atom of the aziridine ring is called ” normal“ ring cleavage (in the SN2). Nucleophilic attack at tertiary or secondary carbon atom of aziridine ring is called “Abnormal” ring cleavage. We used the regioselectivity of ring opening of aziridines to synthesize a series of Coumarin-3- carboxamides. Four series of coumarin derivatives were synthesized from N-(coumarin-3-carboxyl) aziridines in this study. First, we used coumarin-3-carboxyl chloride (20) and a series of azirides with 4N NaOH to synthesize a class of N-(coumarin-3-caboxyl) aziridines (21, 22). Reactions of N-acylazirides with the radical anion of naphthalene had previusly been studied by Stamm, Mall, Falkenstein, Werry and Pen-Yuan Lin. Second, we used N-(coumarin-3-carboxyl) aziridines (21, 22) and activated thiols with the radical anion of naphthalene to synthesize Coumarin-3- carboxamide derivatives (27-40). Third, we used N-(coumarin-3- carboxyl) aziridines and 4-hydroxycoumarins to synthesize coumarin dimmer (41-50). Fourth, we used N-(coumarin-3-carboxyl) aziridines and 7-hydroxycoumarins to synthesize coumarin dimmer (51-54). The physical and chemical characteristics of the synthesized compound 1-35 were measured by 1H-NMR, IR, HRMS, and melting point determination. The cytotoxicities of all synthesized compounds to cancer cell lines (Colon 205, K-562, MCF7) are also examined in this study.
Chen, Yun y 陳筠. "Aluminum Complexes Bearing [N,O]-Coumarin-Based Ligands : Synthesis, Characterization and Applicationin Ring-Opening Polymerization of Cyclic Ester". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/20417976002348155562.
Texto completo國立中興大學
化學系所
103
The coumarin-derived ligand precursors L1H-L8H have been prepared. Reactions of L1H-L8H with 1.2 equiv. of AlMe3 afford aluminum complexes 48-55. All compounds were characterized by NMR spectroscopy and elemental analysis. Molecular structures of 49, 51, and 52 were determined by X-ray crystallography. The catalytic activities of these complexes towards the ring-opening polymerization of cyclic esters in the presence of alcohols were also examined. Based on the homonuclear decoupled 1H NMR spectra, the atactic polylactides (Pm values ranged from 0.44 to 0.57) were produced using 48-55 as catalysts. Kenetics studies showed that the polymerization reaction is first-order for the complex 48.
cheng, chai-yi y 鄭佳怡. "A new synthetic strategy in the preparation of aromatic ring-fused coumarins". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/82676749915719283545.
Texto completo國立中正大學
化學所
95
The addition of propargyl tetrahydropyranyl ether to the aromatic ring-fused cyclohexanone followed by dehydration and deprotection gives the corresponding cyclohexenyl-substituted propargl alcohol. This alcohol was oxidized to the aldehyde followed by sequentially partial reduction of the triple bond and eletrocyclization to give the corresponding dihydropyran. After treated with DDQ, the dihydropyran can be converted to benzocoumarin derivative. The aforementioned cyclohexenyl-substituted propargl alcohol could also be prepared from the corresponding cyclohexenyl triflate and the propargyl tetrahydropyranyl ether by Sonogashira coupling. Besides benzocoumarin, we can also synthesize a variety of heteroaromalic ring-fused coumarin. In summary, we have developed a new and versatile synthetic strategy to prepare the aromatic (or heteroaromatic) ring-fused coumarins.
Capítulos de libros sobre el tema "Coumarin ring"
"Shikimic Acid Pathway: Phenols". En Chemical Diversity of Plant Specialized Metabolites, 163–217. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/9781837671472-00163.
Texto completoKamal Kant Arya, Rajeshwar, Arun Kumar, Anchala Guglani, Dheeraj Bisht y Deepak Kumar. "Chromene as Antioxidants". En The Role of Chromenes in Drug Discovery and Development, 215–24. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815124330123010012.
Texto completoSupuran, Claudiu T. "Coumarins as Carbonic Anhydrase Inhibitors". En Flavonoids and Phenolics, 298–329. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815079098122010013.
Texto completoDell, C. P. "By Ring Contraction of 4-(Halomethyl)coumarins". En Fused Five-Membered Hetarenes with One Heteroatom, 1. Georg Thieme Verlag KG, 2001. http://dx.doi.org/10.1055/sos-sd-010-00092.
Texto completoV. Vastrad, Jyoti, Pratikhya Badanayak y Giridhar Goudar. "Phenolic Compounds in Tea: Phytochemical, Biological, and Therapeutic Applications". En Phenolic Compounds - Chemistry, Synthesis, Diversity, Non-Conventional Industrial, Pharmaceutical and Therapeutic Applications. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.98715.
Texto completoActas de conferencias sobre el tema "Coumarin ring"
Nagasawa, Yutaka, Arkadiy P. Yartsev, Keisuke Tominaga y Keitaro Yoshihara. "Chemical Substitution and Deuterium Isotope Effects on Ultrafast Intermolecular Electron Transfer: Possible Role of Molecular Vibrations". En International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.fa.3.
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