17 Questions
Glycosides are molecules wherein a carbohydrate is attached to a non-carbohydrate element by means of its ______ carbon.
anomeric
The sugar component in glycosides is known as the ______.
glycone
The non-sugar component in glycosides is known as the ______ or ______.
aglycone, genin
Cardiac glycosides are primarily sourced from ______ medicinal plants.
Philippine
Cardiac glycosides have a mechanism of action based on their ______ portion.
aglycone
Glycosides are easily hydrolyzed by mineral acids, water, and enzymes. They show optical activity and are normally __________.
levorotatory
Plants store dormant glycosides that are activated by enzymatic hydrolysis, resulting in the detachment of the ________ portion.
sugar
Glycosides in plants play a role in biological cycles, regulatory, protective, and sanitary aspects. They provide pigmentation and help filter ________ rays.
UV
The non-sugar portion of glycosides generally holds the ________ activity.
therapeutic
Cardioactive glycosides from animals and humans exert therapeutically significant effects such as cardiotonic, purgative, analgesic, anti-arrhythmic, and demulcent. They enhance the ________ and bioavailability of the non-sugar portion.
absorption
Glycosides are formed by the interaction of nucleotide glycosides and contain an ________ that is insoluble in nonpolar solvents like C6H6.
aglycone
The aglycone of cardioactive glycosides can be classified into different types such as steroid, anthraquinone, saponin, cyanophoric, isothiocyanate, flavonol, alcohol, lactone, aldehyde, and __________.
phenol
__________ are examples of aglycone types in cardioactive glycosides.
Steroids occurring as glycosides
The tests for unsaturated steroidal aglycone include Liebermann-burchard, Salkowski, and __________ tests.
2-deoxy sugar glycone
Digitalis is sourced from the dried leaf of __________.
Digitalis purpurea
Two important glycosidic components found in Digitalis lanata are Digitoxin and __________.
Digoxin
__________ is made up of 3 molecules of digitoxose and 1 molecule of digoxigenin.
Digitoxin
Test your knowledge on the chemical identification and functions of aglycone and glycosides. Learn about their solubility, hydrolysis, optical activity, and reduction properties. Explore how plants store dormant glycosides and activate them through enzymatic hydrolysis.
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