Glycosides

Question 1

What are the components of glycosides?

Answer 1

Sugar
Aglycone (may be a terpene,flavonoids,or any natural product)

Question 2

What are the 2 basic classes of glycosides? Give brief explanation.

Answer 2

1. C-Glycosides- sugar is attached to aglycone via carbon-carbon bond
2. O-Glycosides- sugar is attached to aglycone via carbon-oxygen bond

Question 3

What are cyanide glycosides?

Answer 3

Used by plants as chemical defense
e. g amygdalin

Question 4

Which plants give glucosinolates? What are examples of glucosinolates -lisothiocynates

Answer 4

Cabbage and sprouts
e. g Acrinylisothiocyanate, Allylisothiocynate

Question 5

Cardiac glycosides such as…….affect heart rhythm

Answer 5

Digoxin used in congestive HF

Question 6

Anthraquinone glycosides are known for their…….. properties. Examples include

Answer 6

Laxative properties
-Cascara (Rhamnus purshiana)
-Aloe Vera
-Senna (Cassia angustifolia)

Question 7

What is the major component of Aloe Vera?

Answer 7

Barbaloin

Question 8

What is the major component of Cascara

Answer 8

Dihlucoside casaroside

Question 9

What is the main component of Senna?

Answer 9

Sennosides A and B

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