Showing papers on "Swertia published in 1978"

TL;DR: The first demonstration of the variation in chemical characters in the different parts of a Swertia species during its ontogeny is demonstrated, with an added oxygen function at C-4 in some compounds.

TL;DR: Anti-Mycobacterium tuberculosis H37 RV data are presented for the individual xanthones of Canscora decussata Schult and Swertia purpurascens Wall (Gentianaceae); a few, from the former species, showed significant activity.

TL;DR: Xanthones with 1-3,5,8 or 1,3,4, 5,8-oxidation pattern, the C -glucosides mangiferin, isoorientin and swertisin, were isolated from the aerial parts of G. ramosa.