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Gentisein is a xanthone that has been found in H. annulatum and has diverse biological activities.1,2,3 It scavenges DPPH (Item No. 14805) radicals and inhibits the activity of α-glucosidase in cell-free assays (IC50s = 23.3 and 14.7 µM, respectively).1,2 Gentisein is cytotoxic against K562 chronic multiple leukemia cells, drug-sensitive HL-60 acute promyelocyte leukemia cells, and multidrug-resistant HL-60/DOX cells (IC50s = 102, 90.9, and 88.3 µM, respectively).3
WARNING This product is not for human or veterinary use.
1. Prenylated xanthones from the bark of Garcinia xanthochymus and their 1,1-
2. Synthesis and pharmacological activities of xanthone derivatives as α-
3. Cytotoxic effects and multidrug resistance modulation by five benzophenones and a xanthone Isolated from Hypericum annulatum Moris SUBSP. Annulatum. Biotechnol. Biotechnol. Equip. 27(1), 3561-3568 (2014).