Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Chapter 26, Problem 28P
Interpretation Introduction
Interpretation:
The structure of the zwitterion form of
Concept Introduction:
A zwitterion is an overall neutral molecule.
It contains two or more
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What initiates a dehydration process between two amino acids, provided their carboxyl groups are exactly aligned with the amine groups of the other?
Refer to the structure of procaine in the table in the essay “Local Anesthetics.” Using p-aminobenzoic acid, give equations showing how procaine and procaine monohydrochloride could be prepared. Which of the two possible amino functional groups in procaine will be protonated first? Defend your choice. (Hint: Consider resonance.)
at a pH value of 2, the amino and carboxyl groups in an amino acid will exist as
Chapter 26 Solutions
Organic Chemistry - Standalone book
Ch. 26.1 - Prob. 1PCh. 26.2 - Prob. 2PCh. 26.2 - Prob. 3PCh. 26.3 - Prob. 4PCh. 26.3 - Prob. 5PCh. 26.4 - Prob. 6PCh. 26.4 - Prob. 7PCh. 26.4 - Prob. 8PCh. 26.5 - Prob. 9PCh. 26.6 - Prob. 10P
Ch. 26.6 - Prob. 11PCh. 26.6 - Prob. 12PCh. 26.7 - Prob. 13PCh. 26.7 - Prob. 14PCh. 26.7 - Prob. 15PCh. 26.7 - Prob. 16PCh. 26.7 - Prob. 17PCh. 26.9 - Prob. 18PCh. 26.10 - Digestion of the tetrapeptide of Problem 26.18...Ch. 26.12 - Prob. 20PCh. 26.12 - Prob. 21PCh. 26.15 - Prob. 22PCh. 26.15 - Prob. 23PCh. 26.16 - Prob. 24PCh. 26.17 - Prob. 25PCh. 26.18 - Prob. 26PCh. 26 - Prob. 27PCh. 26 - Prob. 28PCh. 26 - Prob. 29PCh. 26 - Prob. 30PCh. 26 - Prob. 31PCh. 26 - Prob. 32PCh. 26 - Prob. 33PCh. 26 - Prob. 34PCh. 26 - Prob. 35PCh. 26 - Prob. 36PCh. 26 - Prob. 37PCh. 26 - Prob. 38PCh. 26 - Prob. 39PCh. 26 - Prob. 40PCh. 26 - If you synthesized the tripeptide Leu-Phe-Ser from...Ch. 26 - Prob. 42PCh. 26 - Prob. 43PCh. 26 - Prob. 44PCh. 26 - Prob. 45DSPCh. 26 - Prob. 46DSPCh. 26 - Prob. 47DSPCh. 26 - Prob. 48DSPCh. 26 - Prob. 49DSPCh. 26 - Prob. 50DSP
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- What special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?arrow_forwardA chemically modified guanidino group is present in cimetidine (Tagamet), a widely prescribed drug for the control of gastric acidity and peptic ulcers. Cimetidine reduces gastric acid secretion by inhibiting the interaction of histamine with gastric H2 receptors. In the development of this drug, a cyano group was added to the substituted guanidino group to alter its basicity. Do you expect this modified guanidino group to be more basic or less basic than the guanidino group of arginine? Explain.arrow_forwardConsider the tripeptide leucylvalyltryptophan. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has a basic side chain?arrow_forward
- fid the molecular structure of 1. deprotonated form of 2-amino-3hydroxypropanoic acid 2.zwitterionic form of 2-Amino-3-methylpentanoic acid 3. protonated form of 2-Amino-3-methylpentanoic acid 4. deprotonated form of 2,5 diamino5-oxopentanoic acid 5. zwitterionic form of 2-amino-3hydroxypropanoic acid 6.2-phenyl propanol 7. 2,4,6-trinitrophenol 8. oxoheptanoic acid 9. (4E)-2,6-dimethylhepta2,4-dien3ol 10. 3-methylbutan1-olarrow_forwarda-Amino acids have the following general form: H H,N-C R-group a) Draw the structures of any amino acid (one for each of the following) with: i. A hydrophobic R-group-that contains a double bond An acidic R-group A basic R-group ii. ii. The amine, carboxylic acid and R-group of an amino acid may be ionised under certain pH conditions. b) For amino acids (i– i), draw their most probable structure in biological fluid, pH 7.4. c) For amino acids (i– i), draw their most probable structure in stomach acid, pH 1. -arrow_forwardThe amino acid (S)-alanine has the physical characteristics listed under the structure. How does the melting point of a racemic mixture of (R)- and (S)-alanine compare to the melting point of (S)-alanine?arrow_forward
- 2. Describe the basic chemical requirements for the aminoglycosides. Why are these compounds strongly basic and exist as polycations at physiological pH? (Use equations to explain). OH OH HỌ H2N HO FHO- Но Но NH2 H,N NH2arrow_forwardWhich of the following is true about the twenty standard amino acids? All of them are achiral molucules. All of them have primary alpha-amino group. O All of them are essential amino acids that can be synthesized by the body. All of them are chiral molecules.arrow_forward(b) Which of the following common amino acids has more than one amino group?arrow_forward
- In greater details, what main difference would you see when conducting the nitrous acid test with aniline vs. amino-cyclohexane? Be specific.arrow_forwardPick the FALSE statement: Since amino acids have functional groups that are strong acids, their structures depend on the pH of their environment. Cys has a sulfhydryl that can stabilize protein shape by forming noncovalent bonds. The R group in Ala is a methyl group. Aspartic acid and glutamic acid do not have amide groups. more than 1 of the above is falsearrow_forwardAlanine, shown below, is an example of a(n) [aromatic, basic, acidic, polar, or non polar] amino acid and would most likely be found on the [inside or outside] of a proteinarrow_forward
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