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Three new xanthones, paucinervins H–J (1–3), as well as eleven known compounds (4–14), were isolated from the leaves of Garcinia paucinervis. The structures of the new compounds (1–3) were elucidated by 1D, 2D NMR spectra and HR ESIMS. In vitro antiproliferative activity against human promyelocytic leukemia HL-60 cells was tested, among which, compounds 2, 5, 6 and 7 exhibited strong growth inhibitory...
Five xanthones, 1,4,5,6-tetrahydroxyxanthone (1) and bracteaxanthones III–VI (2–5) together with twenty-six known compounds (6–31), were isolated from the ethanol extract of the stem bark of Garcinia bracteata. Their structures were elucidated via spectroscopic analyses. Growth inhibitory activities of these compounds against the human leukaemic HL-60 cell line were measured in vitro. Compounds 7,...
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