نتایج جستجو برای: maltol
تعداد نتایج: 162 فیلتر نتایج به سال:
Dihydrostreptomycin is produced commercially by the catalytic hydrogenation of streptomycin. The reaction involves the reduction of the aldehyde group in the streptose moiety of the streptomycin molecule to the corresponding primary carbinol group as evidenced by the failure of dihydrostreptomycin to react with carbonyl reagents or with alkali to produce maltol. As there are no chemical methods...
as nitric oxide (NO), superoxide anion (O2 ), hydroxyl ( ·OH) radicals and peroxynitrite (ONOO ), are toxic and play an important role in tissue injury. O2 reacts rapidly with NO to produce the more toxic ONOO . In addition, ONOO and its decomposition product, ·OH, contribute to antioxidant depletion, alterations of protein structure and oxidative damage observed in human diseases. Thus, it is ...
The review summarizes literature data and presents the obtained by authors on chemical composition, antioxidant pharmacological activity of an aqueous extract Siberian fir (Abies sibirica L.). Fir is widely used in folk medicine as a tonic, anti-cold, bactericidal, antiscorbutic agent. One most promising terms study use herbal fir, water-steam distillation paws. On basis this extract, number dr...
transfusion-dependent patients such as those suffering from β-thalassaemia develop a fatal secondary haemosiderosis and consequently a selective iron chelator must be used to relieve such iron overload. 3- hydroxypyridin-4-ones are selective for iron(iii) under most biological conditions, but unlike desferrioxamine, are efficiently absorbed when administered orally. in this study, the synthesis...
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