Triterpenoid saponins from Berneuxia thebetica.
Four triterpenoid saponins were isolated from Berneuxia thibetica. On the basis of chemical and spectroscopic evidence, three new saponins, berneuxia saponins A, B and C, were elucidated as 21-tigloylbarringtogenol C-3 beta-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-galactopyranosyl(1-->3)[bet a- D-glucopyranosyl(1-->2)-beta-D-glucuronopyranoside], 28-tigloylbarringtogenol C-3 beta-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-galactopyranosyl(1-->3)[bet a- D-glucopyranosyl(1-->2)-beta-D-glucuronopyranoside] and 16 alpha-28-dihydroxyolean-12-en-21-one-3-O-alpha-L-rhamnopyranosyl(1 -->2) -beta-D-galactopyranosyl(1-->3)[beta-D-glucopyranosyl(1-->2)-beta-D- glucuronopyranoside]. The known saponin was desacyl jegosaponin.
Laboratory of Natural Materia Medica, Chengdu Institute of Biology, Chinese Academy of Sciences, P.R. China.
M K
MK
Wang
H
H
Cai
S L
SL
Peng
L S
LS
Ding
F E
FE
Wu
Y Z
YZ
Chen
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002681:China; D008516:Medicine, Chinese Traditional; D008969:Molecular Sequence Data; D010946:Plants, Medicinal; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
D012503:Saponins; D014315:Triterpenes