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Swertisin dihydrate
Authors:Shigeru Ohba  Kumi Yoshida  Tadao Kondo
Abstract:The title compound, 6‐C‐gluco­pyran­osyl‐7‐O‐methyl­apigenin dihydrate, C22H22O10·2H2O, is a natural C‐glu­cosyl­flavone. The flavone skeleton is almost planar, the dihedral angle between the pyran moiety and the 4‐hydroxy­phenyl ring being 9.8 (3)°. The basal plane of the pyran­osyl ring of the glucose moiety is almost perpendicular to the benzo­pyran ring system. The flavone skeletons are stacked along the a axis, forming layers parallel to (001). Between these hydro­phobic layers, the glucose groups and water mol­ecules of crystallization are connected via O—H⋯O hydrogen bonds, forming hydro­philic layers.
Keywords:
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