Synthesis and Biological Evaluation of 4′-Substituted Kaempfer-3-ols
作者:Sugyeom Kim、Yu Li、Lin Lin、Peyton R. Sayasith、Ariel T. Tarr、Eric B. Wright、Sharia Yasmin、Deborah A. Lannigan、George A. O’Doherty
DOI:10.1021/acs.joc.9b03461
日期:2020.3.20
The synthesis of two series of five kaempfer-3-ols was described. The first set all have a C-3 hydroxyl group and the second has a carboxymethoxy ether at the C-3 position. Both series have variable substitution at the C-4' position (i.e., OH, Cl, F, H, OMe). Both kaempferols and carboxymethoxy ethers were evaluated for their ability to inhibit ribosomal s6 kinase (RSK) activity and cancer cell proliferation
B-ring substituted 5,7-dihydroxyflavonols with high-affinity binding to P-glycoprotein responsible for cell multidrug resistance
作者:Ahcène Boumendjel、Frédéric Bois、Chantal Beney、Anne-Marie Mariotte、Gwenaëlle Conseil、Attilio Di Pietro
DOI:10.1016/s0960-894x(00)00595-3
日期:2001.1
Starting from the interaction of galangin (3,5,7-trihydroxyflavone) with a cytosolic nucleotide-binding domain of P-glycoprotein, a series of flavonol derivatives was synthesized and tested for their binding affinity towards the same target. The 5,7-dihydroxy-4'-iodoflavonol and 5,7-dihydroxy-4'-n-octylflavonol derivatives displayed much higher binding affinities, with respective increases of 6- and 93-fold as compared to galangin. (C) 2000 Elsevier Science Ltd. All rights reserved.