title: Tetraoxygenated xanthones from the fruits of Garcinia cowa.
abstract: Tetraoxygenated xanthones, cowaxanthones A-E, together with 10 previously reported tetraoxygenated xanthones, were isolated from the crude hexane extract of the fruits of Garcinia cowa. Cowaxanthone B has previously been reported as a synthetic xanthone. Their structures were elucidated by analysis of spectroscopic data, especially by 1D and 2D NMR. The antibacterial activities of the isolated compounds were also evaluated.
authors: Department of Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand. kanda.p@psu.ac.th
authors: Kanda
authors: K
authors: Panthong
authors: Wipapan
authors: W
authors: Pongcharoen
authors: Souwalak
authors: S
authors: Phongpaichit
authors: Walter C
authors: WC
authors: Taylor