- Oleanane glycosides from Eclipta alba
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From the whole parts of Eclipta alba HASSK., six new oleanane triterpene glycosides, named eclalbasaponins I-VI (1-6), were isolated. The structures of 1-6 were characterized as echinocystic acid glycosides, and of those, 5 and 6 were revealed to be sulfated saponins on the basis of chemical and spectral data.
- Yahara,Ding,Nohara
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p. 1336 - 1338
(2007/10/02)
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- THE STRUCTURE OF PROSAPOGENIN OBTAINED FROM THE SAPONIN OF GLEDITSIA JAPONICA
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Key Word Index - Gleditsia japonica; Leguminosae; saponins; bisdesmoside; echinocystic acid derivatives; Gleditsia saponin C. Prosapogenin was obtained by alkaline hydrolysis of Gleditsia saponin GS-C (echinocystic acid 3,28-O-bisdesmoside), a new triterpenoid saponin isolated from Gleditsia japonica.Prosapogenin was shown on the basis of chemical and physicochemical data to be echinocystic acid 3-O-β-D-xylopyranosyl-(1-2)-α-L-arabinopyranosyl-(1-6)-β-D-glucopyranoside.
- Konoshima, Takao,Fukushima, Hiroyuki,Inui,Hideo,Sato, Keiko,Sawada, Tokunosuke
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p. 139 - 142
(2007/10/02)
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