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.
acylated flavonol glycoside, canavalioside, gladiatoside, Canavalia gladiata, ent-kaurane-type diterpene, sword bean
NCBI PubMed ID: 11086895Publication DOI: 10.1248/cpb.48.1673Journal NLM ID: 0377775Publisher: Pharmaceutical Society Of Japan
Correspondence: Yoshikawa M
Institutions: Kyoto Pharmaceutical University, Kyoto, Japan
Methods: 13C NMR, 1H NMR, NMR-2D, TLC, ESI-MS, HPLC, extraction, HR-ESI-MS, evaporation, centrifugation
Found