p benzoquinone/hymenoxys rusbyi

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AiltTrialacha cliniciúlaPaitinní

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12 torthaí

Counter-ion modulation of long-distance pi-bonding of the open-shell p-benzoquinone anions.

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Logáil Isteach / Cláraigh

X-Ray crystallography of dichlorodicyano- or tetrachloro-p-benzoquinone salts with polyether-ligated alkali metals reveals discrete supramolecular complexes: [{M(L)A}(2)]. They show pairs of co-facial p-benzoquinone anions (A(-)) arranged at close interplanar separation: r(pi) approximately 2.9 A

Charge-transfer interaction of aromatic thiols with 2,3-dichloro-5,6-dicyano-p-benzoquinone: spectral and quantum mechanical studies.

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Logáil Isteach / Cláraigh

Charge-transfer (CT) complexes formed between aromatic thiol donors (thiophenol (TP), benzene-1,4-dithiol (BDT), p-aminothiophenol (ATP), p-hydroxythiophenol (HTP), and p-toluenethiol (TTP)) and 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) as an acceptor were studied spectrophotometrically in

Dimerization of organic free radicals in solution. 1. Temperature dependent measurements.

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Logáil Isteach / Cláraigh

Dimerization enthalpies and equilibrium constants have been determined for the radical anion of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), the radical cations of N,N,N',N'-tetramethyl-p-phenylenediamine, N,N-dimethyl-p-phenylenediamine, 2,3,5,6-tetramethyl-p-phenylenediamine,

Spectroscopic studies of charge transfer complexes between colchicine and some pi acceptors.

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Logáil Isteach / Cláraigh

Charge transfer complexes between colchicine as donor and pi acceptors such as tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), p-chloranil (p-CHL) have been studied spectrophotometrically in dichloromethane at 21 degrees C. The stoichiometry of the complexes was found to be

Spectroscopic and electrochemical evaluation of salt effects on electron-transfer equilibria between donor/acceptor and ion-radical pairs in organic solvents.

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Logáil Isteach / Cláraigh

Addition of "inert" tetrabutylammonium hexafluorophosphate (Bu(4)NPF(6)) to a solution of TMDO/DDQ in dichloromethane (where TMDO=2,2,6,6-tetramethylbenzo[1,2-d;4,5-d]bis[1,3]-dioxole, donor, and DDQ=diclorodicyano-p-benzoquinone, acceptor) is accompanied by drastic changes in the electronic

Chemical and Biological insights of Ouratea hexasperma (A. St.-Hil.) Baill.: a source of bioactive compounds with multifunctional properties.

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Logáil Isteach / Cláraigh

The study aimed to evaluate in vitro antioxidant, anticholinesterase and antidiabetic properties of Ouratea hexasperma (A. St.-Hil.) Baill. The inflorescence methanol extract and the ethyl acetate fraction of leaves and stems reported the highest Relative Antioxidant Capacity Index (RACI), whereas

The synthesis of, and characterization of the dynamic processes occurring in Pd(II) chelate complexes of 2-pyridyldiphenylphosphine.

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Logáil Isteach / Cláraigh

Pd(II) complexes in which 2-pyridyldiphenylphosphine (Ph(2)Ppy) chelates the Pd(II) centre have been prepared and characterized by multinuclear NMR spectroscopy and by X-ray crystallographic analysis. trans-[Pd(kappa(1)-Ph(2)Ppy)(2)Cl(2)] is transformed into

Determination of some antihistaminic drugs by atomic absorption spectrometry and colorimetric methods.

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Logáil Isteach / Cláraigh

Atomic absorption spectrometry (AAS) and colourimetric methods have been developed for the determination of pizotifen (I), ketotifen (II) and loratadine (III). The first method depends on the reaction of the three drugs (I); (II) and (III) with cobalt thiocyanate reagent at pH 2 to give ternary

Evaluation of in vivo and in vitro biological activities of different extracts of Cuscuta arvensis.

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Logáil Isteach / Cláraigh

In the present study, the potential effects of extracts from the whole plant of Cuscuta arvensis were studied in mice using the carrageenan-induced hind paw edema model for antiinflammatory activity and the p-benzoquinone-induced writhing reflex for the assessment of antinociceptive activity. In

In vivo anti-inflammatory and antinociceptive actions of some Lamium species.

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Logáil Isteach / Cláraigh

BACKGROUND Several Lamium species have been used to relieve pain in arthritic ailments in Turkish folk medicine. OBJECTIVE To evaluate the anti-inflammatory and antinociceptive activities of different extracts prepared with methanol, dichloromethane, n-butanol and water from the aerial parts of some

Biological activities of Pseudevernia furfuracea (L.) Zopf extracts and isolation of the active compounds.

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Logáil Isteach / Cláraigh

BACKGROUND Pseudevernia furfuracea (L.) Zopf (Parmeliaceae) is a common epiphytic lichen in the conifer-hardwood forest of Anatolia. This species is used in traditional medicine in Turkey as a treatment for wounds, eczema and hemorrhoids. OBJECTIVE The present study was designed to investigate the

Mechanisms of hydride abstractions by quinones.

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Logáil Isteach / Cláraigh

The kinetics of the hydride abstractions by 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) from 13 C-H hydride donors (acyclic 1,4-dienes, cyclohexa-1,4-dienes, dihydropyridines), tributylstannane, triphenylstannane, and five borane complexes (amine-boranes, carbene-boranes) have been studied

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