title: A furostanol glycoside from rhizomes of Costus spicatus.
abstract: A new furostanol glycoside was isolated from the rhizomes of Costus spicatus. Its structure was established as (3 beta,22 alpha,25R)-26-(beta -D-glucopyranosyloxy)-22-methoxyfurost-5-en-3-yl O-D-apio-beta-D-furanosyl-(1-->2)-O-[6-deoxy-alpha-L-mannopyranosy l-(1-->4)]- beta-D-glucopyranoside. The structural identification was performed using detailed analysis of 1H and 13C NMR spectra including 2D NMR spectroscopic techniques (COSY, HETCOR and COLOC) and chemical conversions.
authors.affiliation: Universidade Federal do Rio de Janeiro, Brazil.
authors.forename: B P
authors.initials: BP
authors.lastname: Da Silva
authors.forename: R R
authors.initials: RR
authors.lastname: Bernardo
authors.forename: J P
authors.initials: JP
authors.lastname: Parente
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification; D013256:Steroids
chemical_list: C121081:26-(glucopyranosyloxy)-22-methoxy-furost-5-en-3-yl O-apio-D-furanosyl-1-2-O-(6-deoxymannopyranosyl-1-4)glucopyranoside; D012503:Saponins; D013256:Steroids