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Aromadendrin, apigenin, and kaempferol from the wood of Pinus sibirica

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Ultraviolet absorption of flavonoids VIII. Ionization constants of kaempferol and quercetin

SummaryThe ionization constants of the 4′- and 7-OH groups in quercetin and of the 3-, 4′-, 5′-, and 7-OH groups in kaempferol have been determined by the spectrophotometric method. The sequence of…
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Ethacizin metabolism in humans.

The major metabolites of ethacizin (ethyl 10-[3-diethylaminopropionyl]phenothiazine-2-carbamate) have been isolated from human urine by h.p.v., i.r.l. and mass spectra and comparison with spectra of synthetic standard compounds.
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Diquertin suppresses ADP- and thrombin-induced accumulation of cytoplasmic calcium in human thrombocytes

The purpose of this work was to study the effect of diquertin on both base and ADPor thrombin-induced cytoplasmic Ca 2+ levels in human thrombocytes.
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Hydroxystilbenes of the inner bark of Pinus sibirica

SummaryIn addition to pinostilbene and resveratrol, two new stilbene glycosides have been isolated from the phloem ofPinus sibirica R. Mayr, and their structures have been established as…
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Study of the crystalline structure of dihydroquercetin

In recent years, structural investigations of bioflavonoids have frequently involved X-ray diffraction measurements that provide data on the spatial arrangement of molecules. The group of substances…
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Effect of diquertin on platelet content of cyclic nucleotides

The antiaggregation effect of diquertin was probably associated with the increase in platelet levels of cyclic nucleotides and increased the content of cAMP and cGMP in native and thrombin-activated platelets.
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Hemorheological and antioxidant effects of Ascovertin in patients with sclerosis of cerebral arteries.

The treatment with Ascovertin in patients with discirculatory encephalopathy improved their attention, memory, mental performance, normalized sleep, releaved headache, decreased fatiquebility, led to the decrease in blood viscosity values, the reduction of pathological erythrocyte hyper aggregation and the improvement of ery throat deformability.
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Effect of Dihydroquercetin on the Tone of Isolated Rat Veins

Dihydroquercetin effects on the tone of isolated segments of the portal vein of rats were studied. Dihydroquercetin did not modify the basal venous tone, but reduced the amplitude of contractions…
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Phenolic acids of the phloem of Abies nephrolepis, Pinus sibirica, and P. sylvestris

Evapora ted methanol ic ex t r ac t s of Khingan fir, Siberian pine, and Scotch pine were sepa ra t ed by t r e a t ment with diethyl e ther into two fract ions . F rom the e the r so lub le solution…
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