Related Experiment Video
Updated: Jun 10, 2026

A Direct, Early Stage Guanidinylation Protocol for the Synthesis of Complex Aminoguanidine-containing Natural Products
Published on: September 9, 2016
Synthesis and characterisation of α-Glycosyloxyamides derived from cyanogenic glycosides
Jandirk Sendker1, Adolf Nahrstedt
1Institute of Pharmaceutical Biology and Phytochemistry, Hittorfstr. 56, 48149 Münster, Germany. jandirk.sendker@uni-muenster.de
Introduction:
After exposure to oxidative stress, the leaves of some cyanogenic plants contain primary α-glycosyloxyamides with structures corresponding to their original cyanogenic glycosides.
Objectives:
The aim of this study was to prepare such amides from their nitrile precursors and to characterise the new substances in order to facilitate their early identification in forthcoming studies. Methods - A simple but highly specific method is described for the in-vitro synthesis of the amides from their nitrile glycoside precursors using the Radziszewski reaction with hydrogen peroxide and a single-step purification of the reaction product. A TLC method is presented for the preliminary and fast identification of the α-glycosyloxyamides.
Results:
Following this procedure, seven representative α-glycosyloxyamides, five of them new, were obtained and analytically characterised by means of (1) H, (13) C NMR and ATR-IR spectroscopy, highlighting the differences from their respective nitrile glycoside precursors.
Conclusion:
Thus, α-glycosyloxyamides can be obtained in sufficient amounts and purity to serve as references for further studies on the catabolism of cyanogenic glycosides and the detoxification of cyanogenic foodplants using the new aspect of nitrile hydrolysis with (endogenous) hydrogen peroxide.
Related Concept Videos
Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview
Preparation of 1° Amines: Gabriel Synthesis
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
Aldehydes and Ketones with HCN: Cyanohydrin Formation Mechanism
Preparation of Amines: Reductive Amination of Aldehydes and Ketones
Preparation of 1° Amines: Azide Synthesis
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...

