Biotransformation of Primary Amines Quiz

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Questions and Answers

What is the primary metabolic pathway for primary aliphatic amines involving the formation of carbonyl metabolites and ammonia?

  • N-dealkylation
  • N-oxidation
  • Oxidative deamination (correct)
  • N-hydroxylation

Which type of amines can undergo oxidative N-dealkylation and N-oxide formation according to the text?

  • Tertiary aromatic amines (correct)
  • Primary aliphatic amines
  • Tertiary aliphatic amines
  • Primary aromatic amines

What kind of products can result from the further oxidation of N-hydroxylamine according to the text?

  • Nitrone products (correct)
  • Nitroso and nitro products
  • Primary hydroxylamines
  • Carbonyl metabolites

What is the result of the process involving an initial α-carbon hydroxylation reaction followed by carbon-nitrogen cleavage?

<p>Carbonyl metabolite and ammonia (C)</p> Signup and view all the answers

Which type of amines can metabolize to their corresponding lactam derivatives?

<p>Secondary alicyclic amines (B)</p> Signup and view all the answers

What are N-hydroxylamine metabolites susceptible to after being generated from secondary amines?

<p>Spontaneous oxidation to nitrone derivatives (A)</p> Signup and view all the answers

Which process involves a direct oxidative deamination reaction?

<p>Propranolol metabolism (D)</p> Signup and view all the answers

What is the main purpose of oxidative N-dealkylation in nitrogen functionality metabolism?

<p>Removal of alkyl groups from amines (C)</p> Signup and view all the answers

Why is N-dealkylation of the t-butyl group not possible via the carbinolamine pathway?

<p>α-carbon hydroxylation cannot occur in the t-butyl group (D)</p> Signup and view all the answers

What is the fate of the unstable carbinolamine intermediate formed during oxidative N-dealkylation?

<p>It breaks down into an aldehyde and a carbonyl moiety (B)</p> Signup and view all the answers

Which nitrogen-containing compounds are primarily involved in oxidative N-dealkylation?

<p>Tertiary Aliphatic and Alicyclic Amines (D)</p> Signup and view all the answers

What is the main outcome of the metabolic oxidation involving carbon–nitrogen, carbon–oxygen, and carbon–sulfur systems?

<p>Cleavage of the carbon–heteroatom bond (B)</p> Signup and view all the answers

Which group is commonly found in many medicinal agents and is susceptible to mixed-function oxidation or alicyclic hydroxylation?

<p>Cyclohexyl group (C)</p> Signup and view all the answers

What can enzymatic introduction of a hydroxyl group into a monosubstituted cyclohexane ring lead to?

<p>Formation of cis and trans conformational stereoisomers (B)</p> Signup and view all the answers

In oxidative N-, O-, and S-dealkylation reactions, what happens to the resulting intermediate?

<p>Decomposition with cleavage of the carbon–heteroatom bond (A)</p> Signup and view all the answers

What is a common metabolic pathway for alicyclic tertiary amines resulting in the formation of lactam metabolites?

<p>α-carbon hydroxylation (D)</p> Signup and view all the answers

Which type of amine is susceptible to oxidative N-dealkylation, oxidative deamination, and N-oxidation reactions according to the text?

<p>Secondary amines (C)</p> Signup and view all the answers

What fate do some tertiary alicyclic amines face after undergoing oxidative N-dealkylation?

<p>Oxidative N-oxidation (C)</p> Signup and view all the answers

Which type of reaction leads to the formation of Noxide metabolites from tertiary amines according to the text?

<ul> <li>N-oxidation (A)</li> </ul> Signup and view all the answers

What is the metabolic fate of primary alcohol metabolites that are oxidized to aldehydes and carboxylic acids according to the text?

<p>They undergo further oxidation to form ketones (D)</p> Signup and view all the answers

In the metabolism of benzyl carbon atoms, what can secondary alcohols be converted into by alcohol and aldehyde dehydrogenases?

<p>Ketones (A)</p> Signup and view all the answers

What is the expected outcome from the covalent binding of reactive intermediates formed from olefin-containing compounds on the heme portion of CYP?

<p>Inhibition of oxidative drug metabolism (D)</p> Signup and view all the answers

What is the role of the corresponding epoxide metabolites of olefinic compounds in cellular toxicity according to the text?

<p>They are responsible for cellular toxicity (A)</p> Signup and view all the answers

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