title: New polyhydroxylated steroidal saponins from the tubers of Brodiaea californica.
abstract: New polyhydroxylated steroidal saponins (1, 2) were isolated from the tubers of Brodiaea californica. The structures were determined by spectroscopic analysis and acid-catalyzed hydrolysis. The bisdesmosidic saponin (2) is unique in structure, and is the first representative of a steroidal saponin bearing 6-deoxy-D-gulopyranose among both the steroidal and triterpene saponins reported up to the present.
authors.affiliation: School of Pharmacy, Tokyo University of Pharmacy and Life Science, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Mimaki
authors.forename: M
authors.initials: M
authors.lastname: Kuroda
authors.forename: O
authors.initials: O
authors.lastname: Nakamura
authors.forename: Y
authors.initials: Y
authors.lastname: Sashida
authors.forename: T
authors.initials: T
authors.lastname: Satou
authors.forename: K
authors.initials: K
authors.lastname: Koike
authors.forename: T
authors.initials: T
authors.lastname: Nikaido
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006900:Hydroxylation; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D010945:Plants, Edible / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry*
chemical_list: D012503:Saponins; D013256:Steroids