Cholestane glycosides from Solanum abutiloides. III.
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.
Yoshimitsu
H
H
Faculty of Engineering, Kyushu Kyoritsu University, Kitakyushu, Japan.
Nishida
M
M
Nohara
T
T
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*
D002776:Cholestanes; D006027:Glycosides; D012503:Saponins