The experience gained by the methyl glucosides makes it exceedingly probable that the simpler polyhydric alcohols also are suitable substances to employ in these syntheses; as a matter of fact, glycerol has been condensed with gallic acid.
No glucoside containing cumarin as such has yet been isolated; but several glucosidesof its oxy-derivatives are known.
The abnormally large percentages of glucosides which are present in certain species of plants during unfavorable climatic conditions lends some support to this view.
It has been pointed out that the characteristic group which is present in many natural glucosides is of the same general type as the "hormone" substances which are used in the artificial stimulation of the flowering or ripening changes.
Tannic acid= occurs widely distributed in the plant kingdom as a constituent of the special type of glucosides known as tannins, whose properties and functions have already been discussed (see Chapter VII).
The soluble yellow pigments are generally glucosides of hydroxy-derivatives of xanthone or flavone, known as oxyxanthones or oxyflavones.
CHO; and the R may represent a great variety of different organic radicals (see the chapters dealing with Glucosides and with Tannins).
The structural arrangement of the characteristic groups in these glucosides has not yet been definitely worked out.
Several otherglucosides of this nature have been isolated.
The simplest glucosides are the alkyl esters which E.
Classification of the glucosides is a matter of some difficulty.
There is little doubt that hellebore owes its properties to the glucosides just described.
Sulphuric and gallic acids colour the glucosides of digitalin, digitalein, and digitonin, red, but not digitoxin, which can be identified in this way.
Alkaloids and glucosides have not yet been discovered in them.
Perrey,[44] it seems that the power of a plant to direct the distribution of its carbon, hydrogen, and oxygen to form complex glucosides is indicative of its higher functions and developments.
Glucosides may be a form of reserve food material.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "glucosides" in a variety of sentences. We hope that you will now be able to make sentences using this word.
