Chemical and Pharmacological Studies on Triterpene Saponins, Escins, from Horse Chestnut Seeds
Chemical and Pharmacological Studies on Triterpene Saponins, Escins, from Horse Chestnut Seeds
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七叶树种子中三萜皂苷、七叶皂苷的化学和药理学研究
DOI:
10.1007/978-94-015-9339-7_20
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
H. Matsuda
中科院分区:
文献类型:
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作者:
M. Yoshikawa;H. Matsuda
The saponin mixture" escin" from the seeds of the horse chestnut tree (Aesculus hippocastanum L., Hippocastanaceae) is employed in therapy of peripheral vascular disorders and also in cosmetics for prevention and treatment of cellulitis. The isolation and structure elucidation of saponin constituents in" escin" have been the target of many investigations and the structures of two major saponins were hitherto presumed on the basis of chemical and physicochemical evidence obtained by using the saponin mixture and sapogenol mixture [1-3]. Recently, the isolation of two saponins from commercial J3-escin using HPLC was reported and their MS data were analyzed on the basis of the previous structures [4, 5].In the course of our characterization studies on bioactive saponins and glycosides in medicinal herbs and foodstuffs, we have found that several saponin fractions showed inhibitory activity on the increase of serum glucose levels in glucose-loaded rats. Through bioassay-guided separation, we have isolated new active triterpene saponins and have determined their structures: elatosides AK (Aralia elata SEEM., Araliaceae), kochianosides I-IV, scoparianosides AC (Kochia scoparia SCHRAD., Chenopodiaceae), betavulgarosides IX (Beta vulgaris L., Chenopodiaceae), spinacosides Ill, IV, basellasaponins AD (Spinacia oleracea, Chenopodiaceae; Basella rubra L., Basellaceae), gymnemosides af (Gymnema sylvestre R. BR., Asclepiadaceae), camelliasaponins A1-C2 (Camellia japonica L., Theaceae), theasaponins El, E2, assamsaponins AI (Camellia sinensis L., Theaceae), E, Z-senegasaponins ac, Z-senegins II-IV (Polygala senega L. var. latifolia TORREY et GRAY, Polygalaceae), and escins la-VI, isoescins la, Ib, V (Aesculus hippocastanum L., A. turbinata BLUME., Hippocastanaceae). By examination of the structure requirement for the hypoglycemic activity in oral glucose-loaded rats, the active saponins could be classified into the following three types of structure: 1) 0Iean-12-en-28-oic acid 3-monodesmosides (e1atosides, kochianosides, scoparianosides, betavulgarosides), 2) acylated polyhydroxyolean-12-ene 3-monodesmosides (gymnemosides, camelliasaponins, theasaponins, assamsaponins, escins, isoescins), 3) 0Iean-12-ene 3, 28-acylated bisdesmosides (E, Z-senegasaponins, Z-senegins)[6-8]. These saponins were found to inhibit the transfer of glucose from the stomach to the small intestine [9-12], and the glucose transport at the small intestinal brush border [11, 12]. Furthermore, these saponins also showed accelerative activity on small intestinal transit [13], preventive effect on ileus [13], and protective effect on indomethacin-or ethanol-induced gastric mucosal lesion [14, 15]. This article focuses our recent chemical and pharmacological studies on the triterpene saponin constituents, escins and isoescins, of horse chestnut seeds.
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影响因子:
1.7
作者:
Yoshikawa, M;Murakami, T;Kitagawa, I
通讯作者:
Kitagawa, I
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影响因子:
6.1
作者:
Matsuda, H;Li, YH;Yoshikawa, M
通讯作者:
Yoshikawa, M
DOI:
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