Structural and spectroscopic analysis and evaluation of cytotoxic activity of 2-hydroxychalcones against human cancer cell lines
作者:Antonio L.A.B. Leal、Daniel P. Pinheiro、Francisco W.A. Barros-Nepomuceno、Priscila T. da Silva、Claudia Pessoa、Francisco W.Q. Almeida-Neto、Emmanuel S. Marinho、Antônio C.H. Barreto、Murilo S.S. Julião、Aldeneide S. de Paiva、Paulo N. Bandeira、Pedro de Lima-Neto、Hélcio S. dos Santos、Alexandre M.R. Teixeira
DOI:10.1016/j.molstruc.2021.131135
日期:2021.12
global hardness, the reactivity of chalcones should follow the order 1 < 2 < 4 < 3. Regarding the cytotoxic potential, chalcones 1 and 4 exhibited superior activityagainst HL-60 acute promyelocytic leukemia cells (IC50 = 14.09 ± 1.001 and 28.02 ± 1.47 µM, respectively) and HCT-116 colon cancercells (IC50 = 22.64 ± 0.64 and 42.74 ± 4.63 µM, respectively).
Abstract Synthesis of six new α, β-unsaturated carbonyl compounds (2′-hydroxychalcones) from 2′-hydroxyacethophenone and aromatic aldehyde derivatives under microwave condition has been described due to their pharmaceutical interest. They were characterized by FTIR, 1H NMR, Mass spectra, micro-analytical data and other physic-chemical properties. Density functional theory (DFT) with B3LYP/6-311 + G
Effect of Flavonol Derivatives on the Carrageenin-Induced Paw Edema in the Rat and Inhibition of Cyclooxygenase-1 and 5-Lipoxygenasein Vitro
作者:Andrea M. Sobottka、Wolfgang Werner、Gottfried Blaschke、Werner Kiefer、Ulrike Nowe、Gerd Dannhardt、Elfrides E. S. Schapoval、Eloir P. Schenkel、Gerhard K.E. Scriba
Alkoxyflavonols were synthesized by the Algar-Flynn-Oyamada (AFO) cyclization of chalcones. Hydroxyflavonols were prepared by dealkylation of methoxyflavonols by refluxing in hydroiodic acid. The alkoxyflavonols 3-hydroxy-2-(2,3,4-trimethoxyphenyl)-4H-chromen-4-one (6), 2-(4-ethoxyphenyl)-3-hydroxy-4H-chromen-4-one (7), 2-(4-butoxyphenyl)-3-hydroxy-4H-chromen-4-one (10), and 2-(3-n-butoxyphenyl)-3-hydroxy-4H-chromen-4-one (11) as well as the trihydroxy derivative 3-hydroxy-2-(3,4,5-trihydroxyphenyl)-4H-chromen-4-one (18) displayed high anti-inflammatory activity in carrageenin-induced rat paw edema. Additionally, the inhibition of enzymes of the arachidonic acid cascade by the derivatives was investigated in vitro. In contrast to the natural compound quercetin, the compounds were more potent inhibiting cyclooxygenase-1 than 5-lipoxygenase except for 3-hydroxy-7-methoxy-2-(4-methoxyphenyl)-4H-chromen-4-one (5). No correlation between the anti-inflammatory activity in the rat paw edema test and the inhibition of 5-lipoxygenase or cyclooxygenase-1 could be observed. In conclusion, the present results suggest that other effects than inhibition of these enzymes of the arachidonic acid cascade are important for the anti-inflammatory activity of the investigated alkoxyflavonols.