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Questions and Answers
Which of the following is a characteristic feature of all cardioactive glycosides?
Which of the following is a characteristic feature of all cardioactive glycosides?
- The presence of a β-OH group at position C-14
- The presence of an OH group at positions C-5, C-11, and C-16
- The presence of a β-OH group at position C-3
- The presence of an unsaturated lactone ring at position C-17 (correct)
Which of the following is the aglycone of cardiac glycosides?
Which of the following is the aglycone of cardiac glycosides?
- Testosterone
- Cardiac genin (correct)
- Corticosteroid
- Betamethasone
Which of the following is the correct structure of cardiac genin?
Which of the following is the correct structure of cardiac genin?
- Cyclopentra phenanthrene with a saturated lactone ring at C14
- Cyclopentra phenanthrene with an unsaturated lactone ring at C17 (correct)
- Cyclopentra phenanthrene with a saturated lactone ring at C17
- Cyclopentra phenanthrene with an unsaturated lactone ring at C14
What is the general action of cardioactive glycosides on the cardiac muscle?
What is the general action of cardioactive glycosides on the cardiac muscle?
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Which of the following is a structural feature of cardioactive glycosides?
Which of the following is a structural feature of cardioactive glycosides?
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