Triterpene glycosides from the seeds of Astragalus sinicus L.
From the seeds of Astragalus sinicus L. (Leguminosae), seven triterpene glycosides were isolated and identified as soyasaponin I-III methyl esters (1-3) which were treated with CH2N2 during the separation procedure, soyasaponin IV (4), soyasapogenol B 3-O-beta-D-glucuronopyranoside (5), 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-xylopyranosyl(1-->2)-beta-D- glucuronopyranosyl 3 beta, 22 beta, 24-trihydroxy-11-oxoolean-12-ene (6), whose sapogenol (8) was obtained by enzymatic hydrolysis using glycyrrhizinic acid hydrolase, unambiguously characterized and designated as complogenin, and 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-galactopyranosyl(1-->2)-beta-D - glucuronopyranosyl complogenin (7).
Cui
B
B
Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
Inoue
J
J
Takeshita
T
T
Kinjo
J
J
Nohara
T
T
D006027:Glycosides / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000032:analysis; D012639:Seeds / Q000737:chemistry*; D014315:Triterpenes / Q000032:analysis*
D006027:Glycosides; D012503:Saponins; D014315:Triterpenes