A Structural Investigation by ¹³C‐NMR of the Cyanogenic Glycosides

Abstract

Abstract 13 C‐NMR spectra of 20 cyanogenic glycosides have been measured in deuterium oxide. These compounds constitute representative examples of four groups of glycosides, namely the butyronitrile, propionitrile, mandelonitrile and cyclopentenoncyanohydrin glycosides. The well resolved signals in the proton‐decoupled 13 C‐spectra are assigned and the potential of this method for characterizing and identifying this type of compound is demonstrated. The subtle effects upon the shifts caused by configuration change in the aglycon moiety are demonstrated to be of use in determining absolute configurations.