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 and LAC human cancer cell lines. Compound 2 and the anthraquinones with free OH groups exhibited activity against the test cell lines.
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Feng et al. (2011) studied this question.
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