Xanthones of Garcinia cowa

P na Pattalung¹, W Thongtheeraparp, P Wiriyachitra

¹Research Centre for Natural Products, Faculty of Pharmacy, Chiang Mai University, Thailand.

|August 1, 1994

Abstract:

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.

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