Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 27.1, Problem 1P
Problem 27.1
Write a structural formula for the enol tautomer of cytosine (Table 27.1).
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An oligosaccharide isolated from an organism is found tocontain two glucose residues and one galactose residue.Exhaustive methylation followed by hydrolysis producedtwo glucoses with methoxy groups at positions 2, 3,and 6 and galactose with methoxy groups at positions2, 3, 4, and 6. What is the structure of the originaloligosaccharide?
Q26.
Draw the mechanism of polyethylene glycol self oxidation during storaging to produce formaldehyde and formic acid as impurities?
26. This compound is L-glyceraldehyde. Draw a stereochemically correct representation of C-1
and C-2 of D-glucose.
CHO
|
HO—C—H
|
CH2OH
27. Categorize each of the following as an aldose, a ketose, or neither.
28. Define each in 20 words or less:
(a) anomeric carbon;
(b) enantiomers;
(c) furanose and pyranose;
(d) glycoside;
(e) aldose and ketose.
29. A) Draw the structure of any aldohexose in the pyranose ring form. B) Draw the structure of
the anomer of the aldohexose you drew above. C) How many asymmetric carbons (chiral
centers) does each of these structures have? D) How many stereoisomers of the aldohexoses
you drew are theoretically possible?
30. A) Define "reducing sugar." (b) Sucrose is a disaccharide composed of glucose and fructose
(Glc(1 → 2)Fru). Explain why sucrose is not a reducing sugar, even though both glucose
and fructose are.
Chapter 27 Solutions
Organic Chemistry - Standalone book
Ch. 27.1 - Problem 27.1 Write a structural formula for the...Ch. 27.1 - Prob. 2PCh. 27.1 - Prob. 3PCh. 27.2 - Prob. 4PCh. 27.3 - Prob. 5PCh. 27.3 - Prob. 6PCh. 27.5 - Prob. 7PCh. 27.5 - Prob. 8PCh. 27.5 - Prob. 9PCh. 27.6 - Prob. 10P
Ch. 27.7 - Prob. 11PCh. 27.9 - Prob. 12PCh. 27.12 - 27.13 Modify Figure 27.12 so that it corresponds...Ch. 27.13 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Nebularine is a toxic nucleoside isolated from a...Ch. 27 - Prob. 19PCh. 27 - The 5-nucleotide of inosine, inosinic acid...Ch. 27 - Prob. 21PCh. 27 - (a) The two most acidic hydrogens of uracil have...Ch. 27 - The phosphorylation of -D-glucopyranose by ATP...Ch. 27 - When 6-chloropurine is heated with aqueous sodium...Ch. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...Ch. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...Ch. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...Ch. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...Ch. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...Ch. 27 - Oligonucleotide Synthesis In Section 27.6 we noted...
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