Enzymatic hydrolysis of K-strophanthoside using alpha-glucosidase yhereby yielding
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57%
A-K-strophanthin-B
17%
B-K-strophanthin-A
6%
C-the glycoside cymarin
19%
D- All of above
Examples of anthocyanidins compound is ---------
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9%
Rotenone
75%
delphinidin
16%
coumarin
cardiac glycosides with 6-deoxy sugars (6-CH2OH) are more potent than corresponding (6-CH3)
analoges
analoges
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29%
✅
71%
❎
ouabain it is used as
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2%
cardiotonic
4%
naturetic
5%
antiarrhythemic
88%
All of above
both beneficial and toxic effects on the heart.
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84%
A-cardioactive-glycosides
13%
B-cyanogenic-glycoside
3%
C-saponin-glycoside
Lactone ring in cardioactive-glycoside attached to ........
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5%
at C-3 B-position
88%
at C-17 B-position
5%
C17 alpha position
2%
C-3 alpha position
The A, B, C and D rings junction in cardiac structure should be (configuration)
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88%
A-cis-trans-cis
3%
B-trans- cis-trans
7%
C-cis-trans-trans
2%
D-cis- cis-trans
bufadienolide lactone ring is .....
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7%
A-5-membered
3%
B-4memberd
85%
C-6 membered
4%
D- non
squill (white squill) example for .....
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4%
A-cardinolides
91%
B-bufadienolide
5%
C- amygdalin
addition of diluted acid to cardioactive-glycoside led to .....
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13%
A-formation of 14,15anhydro derivative
83%
B-complete hydrolysis into glucose and aglycones
4%
C- loss of activity
the cyanogenic glycosides are hydrolysed by beta-glycosidase and release HCN with:
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15%
A-ketones
13%
B-Aldehydes
36%
C-one of above
35%
D-all of above
the final compound yielding from Amygdalin hydrolysis are:
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21%
A –Benzaldehyed + cyanic acid
64%
B- Benzaldehyed + hydrocyanic acid
10%
C- aceton + hydrocyanic acid
4%
D – Non of above
the aglycone part in K-strophanthoside (stroposide) is known as:
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54%
A – strophanthidin
5%
B – strophanthobiase
27%
C – K-strophanthin-B
14%
D – non of above
cyanoglycosides uses in manufacturing the:
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1%
A – acrylates
13%
B – synthetic fibres as starting material for nylon 66
7%
C – Cyanide salts
79%
D – All of above
what the giycosides compounds that causes cytotoxic anoxia:
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7%
A – Thioglycosides
6%
B – saponin glycosides
72%
C – Cyanogenic glycosides
16%
D – All of above
cytotoxic anoxia caused by the combination of cyanide ion with
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16%
A – cytochrome
21%
B – cytochrome B
7%
C – cytochrome D
56%
D – non of above
Amygdalin glycoside belong to the:
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6%
A – phenolic glycosides
10%
B – Thioglycosides
80%
C – cyanogenic glycosides
5%
D – strophanthus glycosides
Bufadienolides glycosides are less therapeutic uses because the:
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4%
A – They have a lot of impurities
11%
B – they cause high side effect
4%
C – they highly toxic
81%
D – B +C
Genistetin hydrolysed by ....
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8%
Intestinal bacteria
39%
B-glocosidase
53%
All of above