Results 191 to 200 of about 16,770 (249)

Immunomodulation by quinones

Pharmaceutisch Weekblad Scientific Edition, 1991
The therapeutic application of quinones in areas other than oncology, such as in chronic inflammation, has been proposed. However, because of the adverse side-effects on the function and vitality of almost all investigated cell types the therapeutical margin is small.
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Quinones

2004
Quinones are redox molecules widely present in nature. Coenzyme Q is a subsituted benzoquinone having a polyprenyl chain in the 6-position (decaprenyl- in humans). It is a hydrophobic molecule imbedded in the lipid bilayer of mitochondria and other membranes; in mitochondria it is a component of the electron transfer chain and of the oxidative ...
LENAZ, GIORGIO, GENOVA, MARIA LUISA
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Photochemical additions of aldehydes to quinones, quinone imines and quinone oximes

1968
Klinger [1,2] found that 9,10-phenanthrenequinone reacted with aliphatic and aromatic saturated and unsaturated aldehydes e.g. acetaldehyde, benzaldehyde, and cinnamaldehyde under the influence of light. The photo-adducts 1 may be cleaved hydrolytically to give 9,10-phenanthrenediol and RCOOH; it is possible thus to convert aldehydes to the ...
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Structure−Activity Study on the Quinone/Quinone Methide Chemistry of Flavonoids

Chemical Research in Toxicology, 2001
A structure-activity study on the quinone/quinone methide chemistry of a series of 3',4'-dihydroxyflavonoids was performed. Using the glutathione trapping method followed by HPLC, (1)H NMR, MALDI-TOF, and LC/MS analysis to identify the glutathionyl adducts, the chemical behavior of the quinones/quinone methides of the different flavonoids could be ...
Awad, H.M., Boersma, M.G., Boeren, S., van Bladeren, P.J., Vervoort, J., Rietjens, I.M.C.M.   +5 more
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The Cofactor Pyrroloquinoline Quinone

Annual Review of Nutrition, 1990
Article de synthese sur un cofacteur: la pyrroloquinoleine quinone. Etude de ses proprietes; caracteristiques, formes moleculaires, stabilite. Identification et analyse quantitative des formes libres, derivees et liees par liaison covalente. Distribution chez les procaryotes, les eucaryotes, les aliments et les boissons.
J A, Duine, R A, van der Meer, B W, Groen   +2 more
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Anthra‐9,10‐quinones, Anthra‐1,2‐quinones, Anthra‐1,4‐quinones, Anthra‐2,9‐quinones, and Their Higher Fused Analogues

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
K. Krohn, N. Boker
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Quinones and quinone methides—IV

Tetrahedron, 1979
L. Jurd, J.N. Roitman, R.Y. Wong
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Quinones and quinone methides—V

Tetrahedron, 1979
L. Jurd, J.N. Roitman
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Quinone Chemistry and Melanogenesis

2004
Publisher Summary The divergence of the melanogenic pathway occurs after the initial oxidation step that yields dopaquinone. The current analytical approach to the classification of melanins depends on the assessment of the comparative levels of degradation products that are considered characteristic of indoles and benzothiazine residues.
Edward J, Land, Christopher A, Ramsden, Patrick A, Riley   +2 more
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Quinones of Athiorhodaceae

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1968
J, Maroc, H, de Klerk, M D, Kamen
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