Physiological Significance of the Glycals

Notice was early made of the fact that true nucleic acid, as such or after mild hydrolysis, shows all the reactions that are exhibited by amorphous (t.e., not pure) D-glucal.21 

With Dische s reagent for 2-desoxy sugars (diphenylamine in acetic acid and sulfuric acid) triacetyl-D-glucal and a series of other glycals and glycal derivatives give the same or a similar color as the 2-desoxy sugars.25-28 

---