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  • Title: Xanthone glycosides from Swertia franchetiana.
    Author: Wang SS, Han XW, Xu Q, Xiao HB, Liu XM, Du YG, Liang XM.
    Journal: J Asian Nat Prod Res; 2005 Apr; 7(2):175-9. PubMed ID: 15621623.
    Abstract:
    A new xanthone glycoside (1) has been isolated from Swertia franchetiana together with five known xanthone glycosides. Their structures were elucidated as 7-O-[beta-D-xylopyranosyl-(1-->2)-beta-D-xylopyranosyl]-1,7,8-trihydroxy-3-methoxyxanthone (1), 7-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl]-1,7,8-trihydroxy-3-methoxyxanthone (2), 8-O-beta-D-glucopyranosyl-1,3,5,8-tetrahydroxyxanthone (3), 1-O-beta-D-glucopyranosyl-1-hydroxy-3,7,8-trimethoxyxanthone (4), 1-O-[beta-D-xylopyranosyl-(1-->6)-beta-D-glucopyranosyl]-1-hydroxy-2,3,5-trimethoxyxanthone (5) and 1-O-[beta-D-xylopyranosyl-(1-->6)-beta-D-glucopyranosyl]-1-hydroxy-3,5-dimethoxyxanthone (6) on the basis of spectroscopic evidence.
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