title: Cucurbitacin glycosides from Cabeça-de-negro.
abstract: Five cucurbitacin glycosides named cabenosides D-L were isolated from 'Cabeça-de-negro', the roots of Caput nigri. Among them, the structures of cabenosides D-H were elucidated as 10 alpha-cucurbit-5-en-11-oxo-3 beta,24R,25-triol-3-O-beta-D-glucopyranoside, 10 alpha-cucurbit-5-en-24-oxo-3 beta, 11 alpha,25-triol-25-O-beta-D- glucopyranosyl, [3,O-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-(1-2)-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-(1-6)-beta-D-glucopyranoside] and 10 alpha-cucurbit-5-en-11,24-dioxo-3 beta,25-diol-25-O-beta-D- glucopyranosyl, 3-O-beta-D-glucopyranosyl-(1-6)-beta-D-glucopyranoside, respectively, on the basis of chemical and spectral evidence.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakano
authors.forename: Y
authors.initials: Y
authors.lastname: Kanai
authors.forename: K
authors.initials: K
authors.lastname: Murakami
authors.forename: Y
authors.initials: Y
authors.lastname: Takaishi
mesh_terms: D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D006027:Glycosides