title: Canthin-6-one alkaloids from Brucea mollis var. tonkinensis.
abstract: Three new alkaloids were isolated from the root-wood of Brucea mollis var. tonkinensis collected in China. Their structures were determined to be 11-O-beta-D-glucopyranosyl-(1-->6)-beta- D-glucopyranosylcanthin-6-one, 5-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosylcanthin-6-o ne and 11-hydroxycanthin-6-one-N-oxide, by chemical and spectral methods. In addition, two known alkaloids, canthin-6-one and canthin-6-one-N-oxide, were isolated.
authors.affiliation: School of Pharmaceutical Sciences, Toho University, Chiba, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ouyang
authors.forename: K
authors.initials: K
authors.lastname: Koike
authors.forename: T
authors.initials: T
authors.lastname: Ohmoto
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D002240:Carbohydrate Sequence; D002243:Carbolines / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011728:Pyridones / Q000737:chemistry* / Q000302:isolation & purification; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000470:Alkaloids; D002243:Carbolines; D011728:Pyridones; C090273:bruceolline A; C090274:bruceolline B