Synthesis of Quercetin 3-O-[6″-O-(trans-p-Coumaroyl)] …
Synthesis of alkyl quercetin derivatives | SpringerLink
The changes in UV–vis absorption of Quercetin in the presence of Tb(III) were examined in the methanol solution. The UV–vis spectra of Quercetin showed an intense absorbance at 280 and 372 nm. When the solution of Tb(III) was added, decrease in absorption observed. The results indicated formation of a complex between Quercetin and Tb(III) ().,,
Series of alkyl quercetin derivatives were synthesized ..
ABTS radical scavenging activity was based on the method of Dehghan et al. Briefly, 54.2 mg of ABTS powder was dissolved in 10 ml of phosphate buffer (5 mM, pH 7.0) and then mixed with 1 g of MnO2 and incubated in room temperature within 30 min for generation of green colored ABTS+. After that the prepared solution was centrifuged for 5 min and after filtration; the filtrate was diluted with phosphate buffer until the absorbance of solution equals with 0.70 ± 0.01 in 734 nm. Different concentrations (0–12.5 μM) of Quercetin and its Quercetin–Tb(III) complex were mixed with 2 ml of ABTS solution and incubated for 10 min at room temperature. The decrease of absorbance was monitored at 734 nm after 10 min.
Synthesis of regioselectively acylated quercetin …
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Total synthesis of quercetin 3-sophorotrioside, a …
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Total synthesis of quercetin 3-sophorotrioside, ..
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