title: Cholestane glycosides from Solanum abutiloides. III.
abstract: Four new cholestane glycosides, named abutilosides D (1), E (2), F (3) and G (4), were isolated from the fresh roots of Solanum abutiloides. By chemical and spectroscopic evidence, their structures were elucidated as 26-O-beta-D-glucopyranosyl 3beta,16alpha,26-trihydroxy-5alpha-cholestan-22-one 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-rhamnopyranosyl-(1-->4)-beta-D- glucopyranoside and its desxylosyl compound (1 and 3, respectively), 26-O-beta-D-glucopyranosyl 3beta,16alpha,26-trihydroxycholest-5-en-22-one 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-rhamnopyranosyl-(1-->4)-beta-D- glucopyranoside and its desxylosyl compound (2 and 4, respectively). These compounds were regarded as precursors of a dormantinone type compound on a hypothetical pathway of steroid biogenesis.
authors.affiliation: Faculty of Engineering, Kyushu Kyoritsu University, Kitakyushu, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yoshimitsu
authors.forename: M
authors.initials: M
authors.lastname: Nishida
authors.forename: T
authors.initials: T
authors.lastname: Nohara
mesh_terms: D002776:Cholestanes / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D019657:Solanaceae / Q000737:chemistry*
chemical_list: D002776:Cholestanes; D006027:Glycosides; D012503:Saponins