Results 41 to 50 of about 33,276 (306)
Anthraquinones tautomerism: VII. Hydroxy-substituted anthraquinones
Russian Journal of Organic Chemistry, 2007 Tautomerism of β-mono-, β,β'-dihydroxyanthraquinones, and their anions was studied for the first time by quantum-chemical and correlation methods. 2-Hydroxyanthraquinone exists exclusively in 9,10-quinoid form, and its ionization involves a tautomeric transformation into 10-oxido-2,9- anthraquinone.
Fain V.Ya., Zaitsev B.E., Ryabov M.A.
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1-(2-Methoxyanilino)anthraquinone [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the title compound, C(21)H(15)NO(3), the dihedral angle formed between the aromatic ring systems is 71.50 (3)°. The meth-oxy group is coplanar with the benzene ring to which it is connected, the C-O-C-C torsion angle being 6.37 (17)°. The observed conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond, generating an S(6) ring.
Lihua Lu, Liang He
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Journal of Obesity & Metabolic Syndrome, 2023 Background : Human carbonic anhydrases (CAs) play a role in various pathological mechanisms by controlling intracellular and extracellular pH balance.
Ebrahim Yarmohammadi +4 more
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Prevention of Protein Glycation by Natural Compounds [PDF]
, 2015 Non-enzymatic protein glycosylation (glycation) contributes to many diseases and aging of organisms. It can be expected that inhibition of glycation may prolong the lifespan.
Bartosz, Grzegorz +1 more
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Molecules, 2019 (1) Background: Rhubarb anthraquinones—a class of components with neuroprotective function—can be used to alleviate cerebral ischemia reperfusion injury. (2) Methods: The three pharmacodynamic indicators are neurological function score, brain
Rong-Rong Li +7 more
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Anthraquinones fromCassia greggii
Phytochemistry, 1992 4 pages, 1 table, 1 scheme. The dichloromethane extract of the roots ofCassia greggii afforded seven new anthraquinones: 5-hydroxy-1,4,6,7-tetramethoxy-2-methylanthraquinone, 1,5,7-trihydroxy-4,6-dimethoxy-2-methylanthraquinone, 5,6-dihydroxy-1,4,7-trimethoxy-2-methylanthraquinone, 1-hydroxy-4,7-dimethoxy-5,6-methylenedioxy-2-methylanthraquinone, 5,7 ...
González, Antonio G. +4 more
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2,6-Dimethoxy-9,10-anthraquinone [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 The title compound, C(16)H(12)O(4), crystallizes with two half-mol-ecules in the asymmetric unit, each of which is completed by a crystallographic inversion center. The two crystallographically independent mol-ecules have almost the same geometry and are almost planar [maximum deviations = 0.018 (3) and 0.049 (3) Å].
Akira Ohta +5 more
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Frontiers in Plant Science, 2023 Hydroxyanthracene derivates (HADs) are a group of natural or synthetic compounds with a wide range of biological activities (for instance, anti-inflammatory, antibacterial, and antiarthritic).
Laura Tinti +7 more
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Hepatitis induced by noni juice from Morinda citrifolia: A rare cause of hepatotoxicity or the tip of the iceberg? [PDF]
, 2006 A 24-year-old female patient presented to her community hospital with mild elevations of serum transaminase and bilirubin levels. Because of multiple sclerosis, she was treated with interferon beta-la for 6 weeks.
Diebold, J. +3 more
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Brazilian Archives of Biology and Technology, 2011 The aim of this work was to study the phytochemical and antifungal activity of anthraquinones and root and leaf extracts of Coccoloba mollis on phytopathogens.
Iuri Bezerra de Barros +5 more
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