TY - JOUR
T1 - Glucuronide triterpene saponins from Bersama engleriana
AU - Tapondjou, Azefack Léon
AU - Miyamoto, Tomofumi
AU - Lacaille-Dubois, Marie Aleth
N1 - Funding Information:
The authors are grateful to the Conseil regional de Bourgogne for the research post doctoral fellowship awarded to A. L. Tapondjou.
PY - 2006/10
Y1 - 2006/10
N2 - Five 3-O-glucuronide triterpene saponins (1-5) were isolated from the stem bark of Bersama engleriana Gurke along with two known saponins, polyscias saponin C and aralia saponin 15, and one major C-glycoside xanthone, mangiferin. The structures of the saponins were established mainly by means of spectroscopic methods (one- and two-dimensional NMR spectroscopy as well as FAB-, HRESI-mass spectrometry) as 3-O-[β-d-glucopyranosyl-(1 → 2)-β-d-glucuronopyranosyl]-28-O-[β-d-glucopyranosyl]-betulinic acid (1), 3-O-[β-d-glucopyranosyl-(1 → 2)-[β-d-galactopyranosyl-(1 → 3)]-β-d-glucuronopyranosyl]-oleanolic acid (2), 3-O-[β-d-glucopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranosyl]-oleanolic acid (3), 3-O-[β-d-galactopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-glucopyranosyl-(1 → 4)-β-d-glucopyranosyl]-oleanolic acid (4), and 3-O-[β-d-glucopyranosyl-(1 → 3)-β-d-galactopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranosyl]-oleanolic acid (5).
AB - Five 3-O-glucuronide triterpene saponins (1-5) were isolated from the stem bark of Bersama engleriana Gurke along with two known saponins, polyscias saponin C and aralia saponin 15, and one major C-glycoside xanthone, mangiferin. The structures of the saponins were established mainly by means of spectroscopic methods (one- and two-dimensional NMR spectroscopy as well as FAB-, HRESI-mass spectrometry) as 3-O-[β-d-glucopyranosyl-(1 → 2)-β-d-glucuronopyranosyl]-28-O-[β-d-glucopyranosyl]-betulinic acid (1), 3-O-[β-d-glucopyranosyl-(1 → 2)-[β-d-galactopyranosyl-(1 → 3)]-β-d-glucuronopyranosyl]-oleanolic acid (2), 3-O-[β-d-glucopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranosyl]-oleanolic acid (3), 3-O-[β-d-galactopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-glucopyranosyl-(1 → 4)-β-d-glucopyranosyl]-oleanolic acid (4), and 3-O-[β-d-glucopyranosyl-(1 → 3)-β-d-galactopyranosyl-(1 → 3)-β-d-glucuronopyranosyl]-28-O-[β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranosyl]-oleanolic acid (5).
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U2 - 10.1016/j.phytochem.2006.06.034
DO - 10.1016/j.phytochem.2006.06.034
M3 - Article
C2 - 16890255
AN - SCOPUS:33748548712
SN - 0031-9422
VL - 67
SP - 2126
EP - 2132
JO - Phytochemistry
JF - Phytochemistry
IS - 19
ER -