Chapter 23: Q37E (page 783)
The amino acid leucine is biosynthesized from α-ketoisovalerate by the following sequence of steps. Show the mechanism of each.
Short Answer
The synthesis of leucine takes place from α-ketoisovalerate.
Chapter 23: Q37E (page 783)
The amino acid leucine is biosynthesized from α-ketoisovalerate by the following sequence of steps. Show the mechanism of each.
The synthesis of leucine takes place from α-ketoisovalerate.
All the tools & learning materials you need for study success - in one app.
Get started for freeAzlactones are important starting materials used in the synthesis of dehydro a-aminoacids. They react with aldehydes to form an intermediate that is hydrolyzed under acidic conditions to give the final amino acid product. Provide the structure of the intermediate and propose a mechanism for its formation.
In the mixed Claisen reaction of cyclopentanone with ethyl format, a much higher yield of the desired product is obtained by first mixing the two carbonyl components and then adding a base, rather than by first mixing base with cyclopentanone and then adding ethyl format. Explain.
The following reaction involves a hydrolysis followed by an intramolecular nucleophilic acyl substitution reaction. Write both steps, and show their mechanisms.
How could you prepare the following cyclohexanones by combining a Stork enamine reaction with an intramolecular aldol condensation? (See Problem 23-64.)
The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed.
What do you think about this solution?
We value your feedback to improve our textbook solutions.