Investigation of flavonoid glycosides

Summary 1. The method of differential analysis in the IR region of the spectrum has been used in an investigation of the structure of the carbohydrate part of flavonoid glycosides. This method permits the pyranose and furanose forms of the carbohydrate substituents, the - and -anomers of the pyranosides and other structural features characterizing the nature of the sugars in the glycosides to be determined. The method can also be used to study other glycosides — for example, hydroxyanthraquinone glycosides, furocoumarin glycosides, and cardiac and other glycosides.2. A modified method of comparing molecular rotation has been proposed for determining the configuration of the glycosidic linkages and the size of the oxide rings in the carbohydrate part of the flavonoid glycosides.Khimiya Prirodnykh Soedinenii, Vol. 1, No. 4, pp. 233–241, 1965