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Legume saponins of Gleditsia japonica Miquel. III. Further desmonoterpenyl glycosides of echinocystic acid.

1981; Pharmaceutical Society of Japan; Volume: 29; Issue: 9 Linguagem: Inglês

10.1248/cpb.29.2695

1347-5223

Takao Konoshima, Yasuhiro Umegaki, TOKUNOSUKE SAWADA,

Botanical Research and Chemistry

Two triterpenoid saponins, gleditsia saponins E (GS-E) and G (GS-G), were isolated from legumes of Gleditsia japonica cv. 'Saponifera' (Leguminosae). These saponins contain monoterpene ester moieties. The desmonoterpenyl compounds, GS-E' (C69H112O34) and GS-G' (C64H104O30), were obtained from them by alkaline hydrolysis with K2CO3 and both were identified as echinocystic acid 3, 28-O-bisdesmoside on the basis of physical data and degradation products.