A New Triterpene Saponin from the Tubers of Stachys sieboldii
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منابع مشابه
A new triterpene saponin from Chenopodium ficifolium.
The new triterpene saponin 3-O-beta-D-glucopyranoside, 28-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosiduronic acid oleanolate was isolated from the roots of Chenopodium ficifolium. The known compounds stigmasterol-3-O-glucoside and 3-O-beta-D-glucopyranosiduronic acid, 28-beta-D-glucopyranosyl oleanolate were also isolated. The latter compound, oleanolic acid, beta-sitosterol and its gluc...
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Galactinol synthase (GS, UDP-alpha-d-galactose:1l-myo-inositol-1-O- alpha-d-galactopyranosyltransferase) is a key enzyme in the biosynthetic pathway of the raffinose family of oligosaccharides. The subcellular location of GS was studied in the parenchyma of stachyose-storing tubers of Japanese artichoke (Stachys sieboldii) by isolation of protoplasts and vacuoles. A comparison of the activities...
متن کاملTransport of Stachyose and Sucrose by Vacuoles of Japanese Artichoke (Stachys sieboldii) Tubers.
Vacuoles are the stores for large amounts of stachyose [alphagal (1,6) alphagal (1,6) alphaglc (1,2) betafru] in tubers of Japanese artichoke (Stachys sieboldii). The uptake of stachyose by these vacuoles was examined and compared with that of sucrose. The uptake mechanisms of both sugars were quite similar. The kinetics showed a single saturable response to increasing external concentrations o...
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A triterpene saponoside (LTS-4) isolated from the underground parts of Lysimachia thyrsiflora L. was defined as 3-O-{beta-D-xylopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-[beta-D-glucopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl}-cyclamiretin A. Structure assignment was performed on the basis of spectroscopic data including homo- and heteronuclear 1D and 2D NMR (COSY, TOCSY, NOESY, HE...
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A novel C-28 tetraglycoside of quillaic acid (1) has been isolated from G ypsophila capil laris. The structure was elucidated by 1 D NM R (N O E difference, DEPT, selective 13C{1H} INEPT), 2D NMR ^ H /H and !H ,13C COSY, ‘H /H /H RELAY, ROESY and TOCSY) and other spectroscopic and chromatographic evidences. Conformational dynamics within the tetrasaccharide part were estimated from NOE respons...
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ژورنال
عنوان ژورنال: Bulletin of the Korean Chemical Society
سال: 2014
ISSN: 0253-2964
DOI: 10.5012/bkcs.2014.35.5.1553