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Two new prenylated xanthones (=9H‐xanthen‐9‐ones), garcimangosxanthones D (1) and E (2), together with the six known xanthones 3–8, were isolated from the pericarp of Garcinia mangostana. Their structures were determined by analysis of their spectroscopic data. All of the isolated compounds were biologically evaluated for their in vitro cytotoxic activity against A549, Hep‐G2, and MCF‐7 human‐cancer...
A new anthraquinone, 4‐hydroxy‐1,2,3‐trimethoxy‐6‐methylanthracene‐9,10‐dione (1), and two novel tetrahydroanthraquinones, prisconnatanones A and B (2 and 3, resp.), together with 15 known anthraquinones, 4–18, were isolated from the roots of Prismatomeris connata. Their structures were elucidated on the basis of spectroscopic data. Compounds 1–18 were evaluated for their cytotoxicity against A549...
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