18 Questions
What is the result of hydrolysis of Anthraquinone glycosides?
Yielding alizarin and glucose
What is the use of Alizarin in clinical practice?
To diagnose Pseudogout
What is the characteristic of anthraquinone glycosides in terms of their color?
Orange-red
What is the primary mechanism of action of laxative glycosides in the gut?
Irritation of gut mucosa, causing peristalsis
What is the effect of oxidation with fuming HNO3 on Chrysarobin?
It yields chrysophanol
What is the characteristic of Chrysarobin in borax solution?
It exhibits green fluorescence
Which type of glycosides is easily hydrolyzed?
O-glycosides
What type of glycosides are barbaloin, β-barbaloin, and isobarbaloin?
C-glycosides
What is the reduced form of anthraquinone occurring in plants?
Anthronol
What type of glycosides has a weak reducing property?
Anthraquinone glycosides
What is the medical term for Pseudogout?
Calcium pyrophosphate dihydrate crystal deposition disease
Which type of glycoside is difficult to hydrolyze?
C-glycosides
What is the purpose of adding H2O2 in the evaluation of anthraquinones?
To convert anthranols to anthraquinones
What is the outcome of adding NH4OH to the filtrate in Borntrager's test?
Red colour indicates the presence of free anthraquinones
What is the purpose of using an immiscible organic solvent in Borntrager's test?
To separate the anthraquinones from the plant matrix
Which of the following is NOT a method for evaluating anthraquinones?
Chromatographic method
What is the structure of Alizarin glycoside?
1-hydroxy anthraquinone-2-O-glucoxyloside
Which of the following plant species is known to contain Alizarin glycoside?
R. tinctorum and R. cordifolia
This quiz covers the classification of anthracene glycosides, a group of glycosides with anthracene derivatives as aglycones. Learn about the different types, including anthraquinone derivatives, anthrones and anthronols, dianthrone and dianthranol, and oxanthrone.
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