presenegenin/polygala

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[Germplasm resources of Polygala tenuifolia and determination of presenegenin in processing products].

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Prijava / prijava

OBJECTIVE To research the germplasm resources and the contents of senegenin in processing products of Polygala tenuifolia. METHODS The contents of senegenin in wild Polygala tenuifolia and cultivated samples of Polygala tenuifolia were determined by RP-HPLC, and compared. RESULTS The contents of

Six new presenegenin glycosides, reiniosides A--F, from Polygala reinii root.

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Prijava / prijava

Six new oleanane-type triterpene saponins, called reiniosides A-F, were isolated from the roots of Polygala reinii Fr. et Sav. and their structures were elucidated by spectroscopic and chemical means.

New acylated triterpene saponins from Polygala tenuifolia willd.

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Prijava / prijava

Two new acylated presenegenin glycosides E-onjisaponin H (5) and Z-onjisaponin (6) together with seven known saponins were isolated from the roots of Polygala tenuifolia Willd. Compounds 5 and 6 were obtained as a pair of isomers due to trans and cis-p-methoxycinnamoyl. Their structures were

A novel triterpenoid saponin from Polygala tenuifolia Willd.

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Prijava / prijava

A new triterpenoid saponin, tenuifoside A, was isolated together with three known triterpenoid saponins 2, 3, and 4 from the roots of Polygala tenuifolia Willd. With the help of chemical and spectral analyses (IR, MS, 1D-NMR, and 2D-NMR), the structure of the new saponin was elucidated as

[Studies on chemical constituents in roots of Polygala tenuifolia].

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Prijava / prijava

OBJECTIVE To study the chemical constituents from the roots of Polygala tenuifolia. METHODS Column chromatographic techniques were employed for isolation and purification of chemical constituents of the plant and the structures were elucidated by spectroscopic analysis. RESULTS Five chemical

Nine new triterpene saponins, polygalasaponins XXXIII--XLI from the roots of Polygala fallax Hemsl.

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Prijava / prijava

Nine new oleanane-type saponins, polygalasaponins XXXIII--XLI, along with seven known saponins were isolated from the roots of Polygala fallax HEMSL. Polygalasaponins XXXIII-XLI were elucidated as 3-O-beta-D-glucopyranosyl presenegenin 28-O-beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-

Chemical investigation of the roots of Polygala sibirica L.

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Prijava / prijava

OBJECTIVE To investigate the chemical constituents of the roots of Polygala sibirica L. (Polygalaceae) METHODS The isolation was performed by solvent extraction and various chromatographic techniques, including silica gel, Sephadex LH-20, ODS, semi-preparative HPLC, and preparative TLC. The chemical

[Study on the antihyperlipidemia effective constituent of Polygala fallax Hemsl].

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Prijava / prijava

OBJECTIVE To study the antihyperlipidemia effective constituent of Polygala fallax Hemsl. METHODS Column chromatographic techniques were employed for isolation and purification of chemical constituents of the plant and the structures were elucidated by IR, NMR and MS spectroscopy. RESULTS Four

Polygalasaponins XLII-XLVI from roots of Polygala glomerata.

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Prijava / prijava

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

Oligosaccharide polyester and triterpenoid saponins from the roots of Polygala japonica.

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An oligosaccharide polyester,

Five new triterpene saponins, polygalasaponins XXVIII-XXXII from the root of Polygala japonica Houtt.

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Prijava / prijava

Five new oleanane-type saponins, polygalasaponins XXVIII-XXXII, along with one known saponin, polygalasaponin XXIV, and one known acylated sucrose, tenuifoliside C, were isolated from the root of Polygala japonica. The structures of these new compounds were elucidated as 3-O-beta-D-glucopyranosyl

Biologically active triterpene saponins from callus tissue of Polygala amarella.

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Prijava / prijava

A new bioactive saponin (1), together with a known saponin (polygalasaponin XXVIII) has been isolated from the callus tissue culture of Polygala amarella. Based on spectroscopic data, especially direct and long-range heteronuclear 2D NMR analysis and on chemical transformations, the structure of 1

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