Organic Chemistry
4th Edition
ISBN: 9780077479824
Author: SMITH, Janice Gorzynski/
Publisher: McGraw-Hill College
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Textbook Question
Chapter 29, Problem 29.66P
Write out the steps for the synthesis of each peptide using the Merrifield method:
(a) Ala-Leu-Phe-Phe; (b) Phe-Gly-Ala-Ile.
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Chapter 29 Solutions
Organic Chemistry
Ch. 29 - Prob. 29.1PCh. 29 - Problem 29.2
What form exists at the isoelectric...Ch. 29 - Problem 29.3
Explain why the of the group of an...Ch. 29 - Problem 29.5
What -halo carbonyl compound is...Ch. 29 - Problem 29.6
The enolate derived from diethyl...Ch. 29 - Problem 29.7
What amino acid is formed when is...Ch. 29 - Problem 29.8
What aldehyde is needed to synthesize...Ch. 29 - Prob. 29.8PCh. 29 - Prob. 29.9PCh. 29 - Prob. 29.10P
Ch. 29 - Prob. 29.11PCh. 29 - Problem 29.13
What alkene is needed to synthesize...Ch. 29 - Problem 29.14
Draw the structure of each peptide....Ch. 29 - Name each peptide using both the one-letter and...Ch. 29 - Prob. 29.15PCh. 29 - Prob. 29.16PCh. 29 - Problem 29.18
Glutathione, a powerful antioxidant...Ch. 29 - Problem 29.19
Draw the structure of the...Ch. 29 - Problem 29.20
Give the amino acid sequence of an...Ch. 29 - a What products are formed when each peptide is...Ch. 29 - Prob. 29.21PCh. 29 - Devise a synthesis of each peptide from amino acid...Ch. 29 - Devise a synthesis of the following dipeptide from...Ch. 29 - Prob. 29.24PCh. 29 - Consider two molecules of a tetrapeptide composed...Ch. 29 - What types of stabilizing interactions exist...Ch. 29 - Prob. 29.27PCh. 29 - Draw the product formed when the following amino...Ch. 29 - With reference to the following peptide: a...Ch. 29 - Devise a synthesis of the following dipeptide from...Ch. 29 - Prob. 29.31PCh. 29 - Prob. 29.32PCh. 29 - Histidine is classified as a basic amino acid...Ch. 29 - Tryptophan is not classified as a basic amino acid...Ch. 29 - What is the structure of each amino acid at its...Ch. 29 - To calculate the isoelectric point of amino acids...Ch. 29 - What is the predominant form of each of the...Ch. 29 - 29.37 What is the predominant form of each of the...Ch. 29 - a. Draw the structure of the tripeptide A–A–A, and...Ch. 29 - Draw the organic product formed when the amino...Ch. 29 - 29.39 Draw the organic products formed in each...Ch. 29 - 29.40 What alkyl halide is needed to synthesize...Ch. 29 - 29.41 Devise a synthesis of threonine from diethyl...Ch. 29 - 29.42 Devise a synthesis of each amino acid from...Ch. 29 - Prob. 29.45PCh. 29 - Prob. 29.46PCh. 29 - Prob. 29.47PCh. 29 - Prob. 29.48PCh. 29 - Prob. 29.49PCh. 29 - 29.48 Brucine is a poisonous alkaloid obtained...Ch. 29 - Prob. 29.51PCh. 29 - Prob. 29.52PCh. 29 - Draw the structure for each peptide: (a) Phe–Ala;...Ch. 29 - 29.52 For the tetrapeptide Asp–Arg–Val–Tyr:
a....Ch. 29 - Prob. 29.55PCh. 29 - Explain why a peptide CN bond is stronger than an...Ch. 29 - Prob. 29.57PCh. 29 - 29.55 Draw the amino acids and peptide fragments...Ch. 29 - Prob. 29.59PCh. 29 - Prob. 29.60PCh. 29 - Prob. 29.61PCh. 29 - 29.59 An octapeptide contains the following amino...Ch. 29 - Prob. 29.63PCh. 29 - Prob. 29.64PCh. 29 - Draw all the steps in the synthesis of each...Ch. 29 - 29.62 Write out the steps for the synthesis of...Ch. 29 - 29.64 Another method to form a peptide bond...Ch. 29 - Prob. 29.68PCh. 29 - Prob. 29.69PCh. 29 - Which of the following amino acids are typically...Ch. 29 - After the peptide chain of collagen has been...Ch. 29 - Prob. 29.72PCh. 29 - Prob. 29.73PCh. 29 - 29.70 The anti-obesity drug orlistat works by...Ch. 29 - Prob. 29.75P
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- 22-35 Why is histidine considered a basic amino acid when the pKa of its side chain is 6.0?arrow_forwardWhich amino acids could be referred to as derivatives of butanoic acid?arrow_forwardWrite out the steps for the synthesis of each peptide using the Merrifield method: (a) Ala–Leu–Phe–Phe; (b) Phe–Gly–Ala–Ile.arrow_forward
- Write the complete structures for the following peptides. Tell whether each peptide is acidic, basic, or neutral.(a) methionylthreonine (b) threonylmethionine(c) arginylaspartyllysine (d) Glu-Cys-Glnarrow_forwardShow how solid-phase peptide synthesis would be used to make Ile-gly-asnarrow_forwardIn a paragraph form, provide the experimental procedures in the chemical synthesis of protein that contain native serine residues by the reaction of oxazetidine-containing peptides and α-ketoacid.arrow_forward
- Write out the steps for the synthesis of each peptide using the Merrifieldmethod: Phe–Gly–Ala–Ilearrow_forwardThe structure below is β-sheet. Two extended strands of the polypeptide are H-bonded in a side-by-sidepattern.The amino acids H-bonded can be very far apart from each other in the primary structure.Drawin theH-bondsintheβ-sheet.arrow_forwardAn oligopeptide, 6 amino acids in length, was subjected to acid hydrolysis and yielded equimolar amounts of the following amino acids (in alphabetical order): Arg Gln Lys Met Thr Tyr Based on the following separate treatments, which amino acid is in position #5 of this sequence? a. Cyanogen bromide treatment had no effect. b. Trypsin treatment yielded a dipeptide, a tripeptide and free arginine. The tripeptide had a net positive charge at pH 7. c. Chymotrypsin treatment yielded a dipeptide and a tetrapeptide. The dipeptide had a net charge of zero at pH 5. d. The phenylthiohydantoin derivative released by one round of Edman degradation was PTH-Thr.arrow_forward
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