Results 181 to 190 of about 7,063 (213)
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Planta Medica, 1994
Five xanthones have been isolated from Garcinia cowa Roxb. (Guttiferae): cowanin (1), cowanol (2), cowaxanthone (3), 1,3,6-trihydroxy-7-methoxy- 2-5-bis(3-methyl-2-butenyl)xanthone (4), and norcowanin (5). The structures were assigned by spectroscopic studies. Xanthones 2 and 3 showed moderate antimicrobial activity against Staphylococcus aureus.
P, na Pattalung +3 more
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Five xanthones have been isolated from Garcinia cowa Roxb. (Guttiferae): cowanin (1), cowanol (2), cowaxanthone (3), 1,3,6-trihydroxy-7-methoxy- 2-5-bis(3-methyl-2-butenyl)xanthone (4), and norcowanin (5). The structures were assigned by spectroscopic studies. Xanthones 2 and 3 showed moderate antimicrobial activity against Staphylococcus aureus.
P, na Pattalung +3 more
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The binding of xanthone derivatives to transthyretin
Biochemical Pharmacology, 2005A series of xanthone derivatives, isolated from Calophyllum teysmannii var. inophylloide, have been evaluated for their binding affinity to transthyretin. Transthyretin is a plasma protein involved in the transport of thyroxine (T4) and also implicated in amyloid diseases.
Filipe, Maia +6 more
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Sulfonated Xanthones from Hypericum sampsonii.
ChemInform, 2004Xanthones, 1,3-dihydroxy-5-methoxyxanthone-4-sulfonate and 1,3-dihydroxy-5-O-beta-D-glycopyranosylxanthone-4-sulfonate, together with nine known compounds were obtained from H. sampsonii. This is the first report of sulfonated xanthonoids. Furthermore, compounds 1 and 2 exhibited significant cytotoxicity against the P388 cancer cell line.
Di, Hong +3 more
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Xanthones as systematic markers
Biochemical Systematics and Ecology, 1973Abstract An evolutionary scheme for shikimate-acetate derived xanthones is deduced from their substitution pattern. Increasing distance of a particular xanthone from the primitive precursor is symbolized by increasing numbers. Each xanthone containing plant species is characterized by the average of the numbers attributed to its constituents.
Ceres Maria Andrade da Mata Rezende +1 more
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Xanthones of Rheedia gardneriana
Phytochemistry, 1970Abstract 1,5-Dihydroxyxanthone, 1,7-dihydroxyxanthone, 1,6-dihydroxy-5-methoxyxanthone, lupeol, betulin and β-sitosterol were isolated from Rheedia gardneriana Pl. & Tr.
R.Braz Filho +2 more
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A xanthone from Garcinia cambogia
Phytochemistry, 1998Tetsuro Itô, Hideki Tosa
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