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1. (Article ID: 9941)
 
Saito S, Sumita S, Tamura N, Nagamura Y, Nishida K, Ito M, Ishiguro I
Saponins from the leaves of Aralia elata SEEM. (Araliaceae)
Chemical and Pharmaceutical Bulletin 38 (1990) 411-414
 

Eleven triterpenoidal saponins having oleanolic acid or hederagenin as the aglycone and two flavonoidal glycosides were isolated from the leaves of Aralia elata SEEM. (Araliaceae). The structures of four new saponins (1,2,3,and 4) were established to be 3-O-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl-hederagenin 28-O-β-D-xylopyranosyl-(1→6)-β-D-glucopyranosyl ester, 3-O-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl-oleanolic acid 28-O-β-D-xylopyranosyl(1→6)-β-D-glucopyranosyl ester, 3-O-β-D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl-hederagenin 28-O-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester, and 3-O-β-D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L arabinopyranosyl-hederagenin, respectively, on the basis of spectroscopic and chemical evidence.

araliaceae, bisdesmoside, oleanolic acid glycoside, hederagenin glycoside, Aralia elata, triterpenoidal saponin, monodesmoside

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2. (Article ID: 10059)
 
Yashikawa M, Murakami T, Yamahara J, Matsuda H
Bioactive saponins and glycosides. XII. horse chestnut. (2): structures of escins IIIb, IV, V, and VI and isoescins Ia, Ib, and V, acylated polyhydroxyoleanene triterpene oligoglycisides, from the seeds of horse chestnut tree (Aesculus hippocastanum L., Hippocastanaceae)
Chemical and Pharmaceutical Bulletin 46(11) (1998) 1764-1769
 

New acylated polyhydroxyoleanene triterpene oligoglycosides, escins IIIb, IV, V, and VI and isoescins Ia, Ib, and V, were isolated from the seeds of horse chestnut tree (Aesculus hippocastanum L.). Their structures were elucidated on the basis of chemical and physicochemical evidence.

saponin, horse chestnut, Aesculus hippocastanum, escin, isoescin, Hippocastanaceae

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