Abstract
From the petroleum ether fraction of the aerial parts of Swertia alata three bioactive xanthones, viz., 3-methoxy-1,7,8-trihydroxyxanthone, 1,8-dihydroxy-3,5-dimethoxyxanthone and 1,8-dihydroxy-3,7-dimethoxyxanthones have been isolated and identified by different chemical and spectral methods.
