Results 41 to 50 of about 77,595 (352)
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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JAMA Oncology, 2019 Importance Anthracyclines are part of many effective pediatric cancer treatment protocols. Most pediatric oncology treatment groups assume that the hematologic toxicity of anthracycline agents is equivalent to their cardiotoxicity; for example, Children ...
E. Feijen +15 more
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The Interaction of Human Glutathione Transferase GSTA1-1 with Reactive Dyes
Molecules, 2021 Human glutathione transferase A1-1 (hGSTA1-1) contributes to developing resistance to anticancer drugs and, therefore, is promising in terms of drug-design targets for coping with this phenomenon.
Mohammed Hamed Alqarni +3 more
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DNA-Mediated Electrochemistry [PDF]
, 2008 The base pair stack of DNA has been demonstrated as a medium for long-range charge transport chemistry both in solution and at DNA-modified surfaces. This chemistry is exquisitely sensitive to structural perturbations in the base pair stack as occur with
Barton, Jacqueline K. +2 more
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Molecules, 2012 An ethyl acetate extract of the roots of Rumex dentatus L. was investigated. Three compounds were identified by their spectroscopic data as chrysophanol (1), 6-methyl-7-acetyl-1, 8-dihydroxy-3-methoxy naphthalene-1-O-β-D(L)-glucoside (2) and 6-methyl-7 ...
Yanxia Han +6 more
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Applying hierarchical resource selection concepts to solving crop damage caused by birds
Conservation Science and Practice, 2021 Recovery of Greater Sandhill Cranes (Grus canadensis tabida) is a conservation success but will increase the potential for crop damage if problems caused by high crane density remain unresolved.
Jeb A. Barzen +3 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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Marine Drugs, 2012 Deoxybostrycin (1) is an anthraquinone compound derived from the marine mangrove fungus Nigrospora sp. No. 1403 and has potential to be a lead for new drugs because of its various biological properties.
Zhi-Gang She +9 more
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