Studies on the Constituents of Senegae Radix. II. The Structure of Senegin-II, a Saponin from <I>Polygala senega</I> LINNE var. <I>latifolia</I> TORRY et GRAY

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The chemical structure of senegin-II (I), C70H104O32·4H2O, mp 247-248°, [α] D20-6.2°(MeOH), which was isolated from Senegae Radix (root of Polygala senega LINNE var. latifolia TORRY et GRAY) was established to be presenegenin-(3)-[β-D-glucopyranosyl]-(28)-[β-Dgalactopyranosyl (1gal→4xyl)-β-D-xylopyranosyl (1xyl→4rham)-α-L-rhamnopyranosyl (1rham→2fuc)-4-(3', 4'-dimethoxycinnamoyl)-β-D-fucopyranoside], on the basis of physical data of senegin-II, its derivatives and degradation products.

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