Relevant bibliographies by topics / Naphthazarin

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Naphthazarin'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Naphthazarin"

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Utkina, Natalia K., and Natalia D. Pokhilo. "Free Radical Scavenging Activities of Naturally Occurring and Synthetic Analogues of Sea Urchin Naphthazarin Pigments." Natural Product Communications 7, no. 7 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700725.

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Antioxidant activities of minor pigments of sea urchins (1–5) and synthetic naphthazarins (7–13) were evaluated and compared with echinochrome A (6) using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) scavenging assays. Structure-activity relationships showed that the antioxidant activities of the tested compounds depended on the number and positions of hydroxyl groups. Compounds bearing 3 or 2 hydroxyl groups on a naphthazarin core (5,8-dihydroxy-1,4-naphthoquinone) were the most active in both assays. Echinochrome A (6) (IC50 7.0 μM) and it
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Polonik, Nikita S., Yuri E. Sabutskii, and Sergey G. Polonik. "Free Radical Scavenging Activity of Synthetic and Naturally Occurring Polyhydroxy-, Aminohydroxynaphthazarins and Related Compounds." Natural Product Communications 13, no. 10 (2018): 1934578X1801301. http://dx.doi.org/10.1177/1934578x1801301021.

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Fifty natural and synthetic hydroxy-, aminohydroxynaphthazarins and related quinones were tested for their antiradical activities using 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) scavenging assay. The main features of structure-antiradical activity relationship of amino- and hydroxyquinones were determined for the first time. It was found that naphthazarins (5,8-dihydroxy-1,4-naphthoquinones) are much more active against ABTS-radical than related 1,4-naphthoquinones and 5-hydroxy-1,4-naphthoquinones. Natural aminonaphthazarins (spinamine E, echinamine A) and polyhydroxylated naph
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Pokhilo, N. D., V. A. Denisenko, and V. F. Anufriev. "Chemistry of naphthazarin derivatives. Transetherification selectivity of naphthazarin methoxy derivatives." Russian Journal of Organic Chemistry 50, no. 5 (2014): 647–53. http://dx.doi.org/10.1134/s1070428014050054.

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Pokhilo, N. D., A. Ya Yakubovskaya, and V. P. Glazunov. "Chemistry of naphthazarin derivatives: XV. Bromination of naphthazarin and its derivatives." Russian Journal of Organic Chemistry 47, no. 4 (2011): 504–9. http://dx.doi.org/10.1134/s1070428011040063.

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5

Swager, Timothy, Cagatay Dengiz, and You-Chi Wu. "Synthesis and Optoelectronic Properties of Iptycene–Naphthazarin Dyes." Synlett 30, no. 01 (2018): 54–58. http://dx.doi.org/10.1055/s-0037-1611169.

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We report the synthesis and characterization of iptycene–naphthazarin dyes by using a sequential Diels–Alder approach. The tautomerization of naphthazarin was used as the key step in the synthesis, with structures confirmed by single-crystal X-ray and NMR analysis. The systematic trends in electronic properties were investigated by UV/Vis spectroscopy. BF2 complexes of the dyes were prepared by reaction with BF3·OEt2 in CH2Cl2.
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Kikuchi, Masashi, Kazuo Komatsu, and Motokiyo Nakano. "The alkylamination of naphthazarin." Dyes and Pigments 12, no. 2 (1990): 107–18. http://dx.doi.org/10.1016/0143-7208(90)80003-8.

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Anufriev, V. Ph, S. G. Polonik, N. D. Pokhilo, and N. N. Balanyova. "Chemistry of naphthazarin derivatives. 11. Trisubstituted hydroquinone derivatives in the preparative synthesis of naphthazarins." Russian Chemical Bulletin 52, no. 10 (2003): 2247–50. http://dx.doi.org/10.1023/b:rucb.0000011886.03785.bd.

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Utkina, Natalia K., and Natalia D. Pokhilo. "Antioxidant Activity of 1’-Hydroxyethylnaphthazarins and their Derivatives." Natural Product Communications 12, no. 12 (2017): 1934578X1701201. http://dx.doi.org/10.1177/1934578x1701201218.

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The ABTS•+ radical cation scavenging activity of known (2-5, 9, 10) and new (6-8) 1’-hydroxyethylnaphthazarins and their products of esterification and etherification was evaluated and a structure-activity relationship was studied. It was shown, that the structure of side chains does not affect the radical scavenging activity of 1’-hydroxyethylnaphthazarins and their derivatives. The presence of methoxyl groups on the naphthazarin core slightly enhanced the antioxidant activity of compounds compared with compounds without methoxyl groups. The presence of the additional hydroxyl group on the na
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9

Carmen Carreño, M., J. Luis García Ruano, and Antonio Urbano. "Tautomeric equilibrium of naphthazarin thioderivatives." Tetrahedron 50, no. 17 (1994): 5013–20. http://dx.doi.org/10.1016/s0040-4020(01)90412-0.

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10

Chizhova, A. Ya, T. Yu Kochergina, V. F. Anufriev, V. A. Denisenko, and V. P. Glazunov. "The chemistry of naphthazarin derivatives." Russian Chemical Bulletin 48, no. 5 (1999): 938–43. http://dx.doi.org/10.1007/bf02494641.

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Dissertations / Theses on the topic "Naphthazarin"

1

Mondeková, Věra. "Cytotoxicita vybraných naftochinonů na prostatických buněčných liniích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220038.

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This master´s thesis discusses cytotoxicity of selected naphthoquinones on prostatic cell cultures. The introductory part is dedicated to general characteristic of naphthoquinones with focus on their cytotoxicity, testing of cytotoxicity and mechanisms of cytotoxicity. This part is followed by chapters about cytotoxicity, characteristics and biological activities of selected naphthoquinones; plumbagin and naphthazarin. The last part of this thesis’ theoretical section speaks about fluorescence microscopy and its use in research of naphthoquinones cytotoxicity. The practical part is dedicated t
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2

Lee, Po-Jung, and 李柏蓉. "Mechanism of Naphthoquinone Derivatives, Naphthazarin and Methylnaphthazarin Regulate Vessel Tension and Inhibit Endothelial Nitric Oxide Formation in Human Umbilical Vein Endothelial Cells." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/69191051014406483075.

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碩士<br>臺北醫學大學<br>藥學系<br>91<br>The purpose of this experiment is to investigate the effect of naphthoquinone derivatives, methylnaphthazarin and naphthazarin in rat thoracic aortic rings isolated from rats and the pathway involved. After incubated with rat thoracic aortic rings, we found methylnaphthazarin and naphthazarin concentration-dependently potentiated phenylephrine induced vasocontraction and inhibited acetylcholine induced vasorelaxation in endothelium dependent manner. These data suggested that endothelium might be involved in this pathway. Human Umbilical Endothelium Vein
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Conference papers on the topic "Naphthazarin"

1

Stanic, Petar, and Nenad Vukovic. "Optimization of Conditions for the Chromatographic Isolation of Isohexenyl Naphthazarin Derivatives from the Rhizome Callus of Echium vulgare." In 3rd International Electronic Conference on Medicinal Chemistry. MDPI, 2017. http://dx.doi.org/10.3390/ecmc-3-04670.

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Afshar, Fatemeh, Mansoureh Zahedi-Tabrizi, and Sayyed Tayyari. "THE EFFECT OF THE SADDLE POINT POSITION AND THE OH-BONDING FORCE CONSTANT ON THE TRANSITION FREQUENCIES OF H-BOND OF NAPHTHAZARIN." In 2020 International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2020. http://dx.doi.org/10.15278/isms.2020.wd10.

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You might also be interested in the extended bibliographies on the topic 'Naphthazarin' for particular source types:
Journal articles
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