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  • Title: Polygalasaponins XLII-XLVI from roots of Polygala glomerata.
    Author: Zhang D, Miyase T, Kuroyanagi M, Umehara K, Noguchi H.
    Journal: Phytochemistry; 1998 Feb; 47(3):459-66. PubMed ID: 9433820.
    Abstract:
    Five new oleanane-type saponins, polygalasaponins XLII-XLVI, along with two known saponins were isolated from the roots of Polygala glomerata Lour. The structures of polygalasaponins XLII-XLVI were elucidated as 3-O-beta-D-glucopyranosyl presenegenin 28-O-beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl- (1-->2)-{4-O-[(E)-3,4-dimethoxycinnamoyl]}-beta-D-fucopyranosyl ester, 3-O-beta-D-glucopyranosyl presenegenin 28-O-beta-D-galactopyranosyl-(1-->4)-beta-D-xylopyranosyl-(1-->4)- alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-arabinopyranosyl- (1-->3)]-[4-O-(E)-p-methoxycinnamoyl]-beta-D-fucopyranosyl ester, 3-O-beta-D-glucopyranosyl presenegenin 28-O-beta-D-galactopyranosyl-(1-->4)-beta-D-xylopyranosyl-(1-->4)- alpha-L-rhamnopyranosyl-(1-->2)-[beta-D-glucopyranosyl- (1-->3)]-{4-O-[(E)-3,4-dimethoxycinnamoyl]}-beta-D-fucopyranosyl ester, 3-O-beta-D-glucopyranosyl presenegenin 28-O-beta-D-galactopyranosyl-(1-->4)-beta-D-xylopyranosyl-(1-->4)- alpha-L-rhamnopyranosyl-(1-->2)-[6-O- acetyl-beta-D-glucopyranosyl-(1-->3)]-{4-O- [(E)-3,4-dimethoxycinnamoyl]}-beta-D-fucopyranosyl ester, 3-O-beta-D- glucopyranosyl presenegenin 28-O-beta-D-galactopyranosyl-(1-->4)- beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl- (1-->2)-[6-O-acetyl-beta-D-glucopyranosyl-(1-->3)]-{4-O-[(Z)-3, 4-dimethoxycinnamoyl]}-beta-D-fucopyranosyl ester, respectively, on the basis of spectroscopic and chemical evidence.
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