title: Steroidal saponins and alkaloids from the bulbs of Lilium brownii var. colchesteri.
abstract: The fresh bulbs of Lilium brownii var. colchesteri were found to contain five steroidal saponins: 26-O-beta-D-glucopyranosylnuatigenin 3-O-alpha-L-rhamnopyranosyl-(1----2)-beta-D-glucopyranoside (6), 26-O-beta-D-glucopyranosylnuatigenin 3-O-alpha-L-rhamnopyranosyl-(1----2)-O-[beta-D-glucopyranosyl-(1----4)]- beta-D-glucopyranoside (7), brownioside (8), deacylbrownioside (9) and 27-O-(3-hydroxy-3-methylglutaroyl)isonarthogenin 3-O-alpha-L-rhamnopyranosyl-(1----2)-O-[beta-D-glucopyranosyl-(1----4)- beta-D-glucopyranoside (10); and two steroidal alkaloids: beta 1-solamargine (11) and solasodine 3-O-alpha-L-rhamnopyranosyl-(1----2)-O-[beta-D-glucopyranosyl-(1----4)- beta-D-glucopyranoside (12); along with several phenolic constituents. Compounds 7, 10 and 12 are new naturally-occurring compounds.
authors.affiliation: Tokyo College of Pharmacy, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Mimaki
authors.forename: Y
authors.initials: Y
authors.lastname: Sashida
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D002240:Carbohydrate Sequence; D008969:Molecular Sequence Data; D010946:Plants, Medicinal / Q000032:analysis*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D000470:Alkaloids; D012503:Saponins; D013256:Steroids