quercetin

Synthesis of sulfoquercetin and studies of its structure and nonlinear properties have been carried out. Using quantum-chemical simulations, 13С and HSQC NMR spectrometry, FTIR spectroscopy it was shown that a sulphonic group occurs in C8 location of quercetin. Molecular first hyperpolarizability of the obtained 8-sulfoquercetin was studied. It was shown that 8-sulfoquercetin can be used for creation the new polymer NLO materials on its basis.

Results of investigations of the phospholipids (PL) and hydroperoxide influence on the antioxidant action efficiency of the synthetic phenolic antioxidants (InH) –2,6-di-tert-butyl-4-methylphenol (BHT), 4-methoxyphenol (MOP), 4-tert-butylphenol; natural InH – α-tocopherol (TP), quercetin (Q) and dihydroquercetin (QH2) and hydrated quinoline – 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline (ethoxyquin, EQ), performed by the model of the initiated oxidation of methyl oleate are generalized.