Structural studies of triterpenoid saponins with new acyl components from Quillaja saponaria Molina.
Eight new triterpenoid saponins were isolated from a bark extract of Quillaja saponaria Molina by silica and reverse phase chromatography. The saponins were characterized by spectroscopic data and chemical methods as phytolaccagenic acid, 22beta-hydroxy-quillaic acid, and echinocystic acid substituted with different oligosaccharides at C-3 and C-28. The O-4 of the fucosyl residue in the 28-O-oligosaccharide was substituted with either acetyl, (S)-2-methylbutanoyl, or (3S,4S)-3-hydroxy-4-methylhexanoyl groups.
Guo
S
S
Department of Chemistry, Swedish University of Agricultural Sciences, Uppsala.
Kenne
L
L
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D019685:Rosales / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D014315:Triterpenes / Q000737:chemistry*
D012503:Saponins; D014315:Triterpenes; D009828:Oleanolic Acid