Anthraquinone glycoside is a Glycoside in which the _____ is anthracene derivatives occur as the pharmacologically active constituents of several cathartics of plant origin.

The anthracene occurs in these medicinal plants in various forms of different oxidation-levels as derivatives of anthraquinone, of anthrone, or oxanthrone or anthranol, as well as in a dimeric forms (dianthrone) in some cases.

They are on hydrolysis , yield aglycones which are di, tri, or tetra hydroxyl anthraquinones or modifications of these compounds.

__ the sugar moieties, free anthraquinone exhibit little therapeutic activity.

The sugar is essential because it serves to transport the aglycone to the site of action in the______

Anthraquinone group are inter changeable to each other by

C-C glycosides, aloins are very resistant to hydrolysis and are______ hydrolysed

It can ,however, be decomposed by oxidative hydrolysis with reagents such as ferric chloride.

The purgative action of anthracene bearing drugs is owed to their anthracene glycosidal content rather than their content of free anthracene aglycones

Cascara sagrada: Is the dried bark of Rhamnus purshiana F: Rhamnaceae.

Cascarosides____ (glycosides of barbaloin)

Cascarosides___(glycosides of chrysaloin

Cascara is used as a cathartic

Usual dose of Cascara sagrada fluid extract is 1ml; of aromatic fluid extract is _______; of Cascara sagrada extract is 300mg.

Frangula (Buckthorn):
Is the dried bark of Rhamnus frangula F: Rhamnaceae.
The commercial supply is from _______.