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jujubogenin/colubrina
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6 results
Antifungal jujubogenin saponins from Colubrina retusa.
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Antifungal assay-guided isolation of the 95% ethanol extract of the stems of Colubrina retusa yielded jujubogenin 3-O-alpha-L-arabinofuranosyl(1-->2)-[beta-D-glucopyranosyl (1-->3)]-alpha-L-arabinopyranoside (1), which showed modest growth-inhibitory effects against Candida albicans, Cryptococcus
New jujubogenin glycosides from Colubrina asiatica.
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Three new jujubogenin glycosides, namely, 3' '-O-acetylcolubrin (1); 3' ',2' "-O-diacetylcolubrin (2), and 3' '-O-acetyl-6' '-O-trans-crotonylcolubrin (3), were isolated from the leaves of Colubrina asiatica, in addition to the known colubrin, rutin, and kaempferol 3-O-rutinoside. Compounds 1-3 were
Mabiosides C-E: triterpenoid saponins from the bark of Colubrina elliptica.
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Three novel saponins, mabiosides C-E, were isolated from the bark of Colubrina elliptica together with the known mabioside B and [alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->3)-alpha-L- arabinopyranosyl]-(1-->3)-jujubogenin. All the structures were established by spectroscopic
New antimycobacterial saponin from Colubrina retusa.
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A new jujubogenin saponin was isolated from the stems of Colubrina retusa and identified as jujubogenin 3-O-alpha-L-arabinofuranosyl (1-->2)-[3-O-(trans)-p-coumaroyl-beta-D-glucopyranosyl (1-->3)]-alpha-L-arabinopyranoside (4) on the basis of chemical and spectroscopic data. The antimycobacterial
Chemistry, 13C-NMR Study and Pharmacology of Two Saponins from Colubrina asiatica.
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From the leaves of COLUBRINA ASIATICA B RONGEN (Rhamnaceae) two saponins have been isolated and structurally elucidated, mainly by (13)C-NMR-spectroscopic methods, as jujubogenin-3-O-[2-O-acetyl-3-O-(3-O-beta-D-xylopyranosyl-4-O-acetyl-beta-D-glucopyranosyl)-alpha-L-arabinoside] (colubrinoside) and
Chemical constituents and biological activities from branches of Colubrina asiatica.
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Sixteen compounds were isolated from a Thai medicinal plant, Colubrina asiatica. The isolated compounds were elucidated on the basis of spectroscopic methods (IR, 1D and 2D NMR) as six triterpene acids (1-6), five steroids (7-11), one benzoic acid derivative (12), two peptides (13 and 14), one
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