Medicinal Foodstuffs. XIX. Absolute Stereostructures of Canavalioside, a New Ent-Kaurane-Type Diterpene Glycoside, and Gladiatosides A1,A2,A3,B1,B2,B3,C1, and C2, New Acylated Flavonol Glycosides, from Sword Bean, the Seeds of Canavalia gladiata.
Open Access
- 1 January 2000
- journal article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 48 (11) , 1673-1680
- https://doi.org/10.1248/cpb.48.1673
Abstract
A new ent-kaurane-type glycoside, canavalioside, and eight new acylated flavonol glycosides, gladiatosides A1, A2, A3, B1, B2, B3, C1 and C2, were isolated from the seed of Canavalia gladiata together with robinin, kaempferol 3-O-β-D-galactopyranosyl-7-O-α-L-rhamnopyranoside, and kaikasaponin III. The absolute stereostructures of canavalioside and gladiatosides A1, A2, A3, B1, B2, B3, C1 and C2 were elucidated on the basis of chemical and physicochemical evidence.Keywords
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