Glycosides-Part 1

The higher the sugar content glycosides .......

• the high solublility in organic solvents

• the less solublility in organic solvents

• the less solublility in aqueous solvents

• the solublility in aqueous and organic solvents

A glycooside which is stable agaist acid hydrolysis ....

• Glycosides with 2-deoxy sugars

• N-glycosides

• C-glycosides

• S-glycosides

Myrosin enzyme hydrolyze .......

• C-glycosides

• alpha-glycosides

• beta-linkage glycosides

• S-glycosides

An aglycone which is used for skin bleaching ......

• arbutin

• hydroquinone

• monotropin

• populin

Primeverose sugar is composed of .....

• glucose-6-benzoyl

• arabinose-6-glucose

• xylose-6-glucose

• rhamnose-6-glucose

Acid hydrolysis of frangulin B yields .......

• frangula chrysophanol and glucose

• frangula emodin and glucose

• frangula emodin and rhamnose

• frangula chrysophanol and rhamnose

The aglycone part of cascaroside A and B is ........ anthrone.

• aloe-emodin

• rhein

• chrysophanol

• oxanthrone

Sennosides A and B are formed of ......

• dianthranol

• dianthrone of rhein

• dianthrone of aloe-emodin

• dianthrone of rhein and aloe-emodin

Oxidation at C-9 and C-10 in anthraquinones cause .....

• increase in activity

• increase in solubelity

• loss of activity

• decrease in activity

A 6-Methoxy,7,8 dihydroxy coumarin which is used in sunscreen preparations is ......

• Fraxin

• aesculin

• coumarin

• dicoumarol