Cycloartane triterpene glycosides from Astragalus trigonus.
Three new cycloartane glycosides, trigonoside I, II and III, and the known astragalosides I and II were isolated from the roots of Astragalus trigonus. The structures of the new glycosides were totally elucidated by high field (600 MHz) NMR analyses as cycloastragenol-6-O-beta-xylopyranoside, cycloastragenol-3-O-[alpha-L-arabinopyranosyl(1-->2)-beta-D- xylopyranosyl]- 6-O-beta-D-xylopyranoside and cycloastragenol-3-O-[alpha-L-arabinopyranosyl (1-->2)-beta-D-(3-O-acetyl)-xylopyranosyl]-6-O-beta-D-xylopyranoside.
Gariboldi
P
P
Dipartimento di Scienze Chimiche, Università di Camerino, Italy.
Pelizzoni
F
F
Tatò
M
M
Verotta
L
L
el-Sebakhy
N
N
Asaad
A M
AM
Abdallah
R M
RM
Toaima
S M
SM
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D007887:Fabaceae; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; 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