Oleanolic acid saponins from root-bark of Aralia elata.
Five new oleanolic acid glycosides, tarasaponins III-VII, were isolated from the dried root-bark of Aralia elata together with stipuleanoside R2, in addition to eight saponins previously reported. They were characterized as oleanolic acid 3-O-[beta-D-xylopyranosyl(1-->2)] [beta-D-glucopyranosyl(1-->3)]-alpha-L-arabinopyranoside, beta-D-glucopyranosyl oleanolate 3-O-[beta-D-glucopyranosyl(1-->2)][alpha-L-arabinofuranosyl (1-->4)]-beta-D-glucuronopyranoside, beta-D-glucopyranosyl oleanolate 3-O-[beta-D-xylopyranosyl(1-->2)][beta-D-galactopyranosyl (1-->3)]-beta-D-glucuronopyranoside, beta-D-glucopyranosyl oleanolate 3-O-[beta-D-xylopyranosyl(1-->2)][beta-D-glucopyranosyl (1-->3)-alpha-L-arabinopyranoside, respectively.
Satoh
Y
Y
School of Pharmaceutical Sciences, Showa University, Tokyo, Japan.
Sakai
S
S
Katsumata
M
M
Nagasao
M
M
Miyakoshi
M
M
Ida
Y
Y
Shoji
J
J
D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification*; D010944:Plants / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
D012503:Saponins; D009828:Oleanolic Acid