Oleanene-type triterpene glycosides from puerariae radix. III. Three new saponins from Pueraria thomsonii.
From the root of Pueraria thomsonii (Leguminosae), three new oleanane-type triterpene glycosides, named kudzusaponin B1, acetyl-kaikasaponin III and acetyl-soyasaponin I were isolated, together with soyasaponin I (4) and subproside V (5). Their structures were determined to be 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->2) -beta-D-glucuronopyranosyl kudzusapogenol B (1), 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->2) -beta-D-glucuronopyranosyl sophoradiol 22-O-acetate (2) and 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->2) -beta-D-glucuronopyranosyl soyasapogenol B 22-O-acetate (3), respectively.
Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
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T
Arao
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Idzu
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Kinjo
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Nohara
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Isobe
D002855:Chromatography, Thin Layer; D007887:Fabaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*
D012503:Saponins; C102415:acetyl-kaikasaponin III; C102416:acetylsoyasaponin I; C102414:kudzusaponin B1; D009828:Oleanolic Acid