Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Question
Chapter 25.5, Problem 25.8P
Interpretation Introduction
Interpretation: An explanation to show that the phosphatidic acid is chiral, even though none of its fatty acids are chiral is to be stated and identification of asymmetric carbon in phosphatidic acid is to be done.
Concept introduction: A carbon atom, linked to four different
To determine: An explanation to show that the phosphatidic acid is chiral, even though none of its fatty acids are chiral and identification of asymmetric carbon in phosphatidic acid.
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Show that a phosphatidic acid is chiral, even though none of its fatty acids are chiral.Where is the asymmetric carbon atom?
1) Below you are given the structures of the disaccharides lactose and trehalose.
он
он
но
он
но
но
OH
но
но
OH
но
он
но
но
OH
Lactose
Trehalose
a. Identify clearly the hemiacetal and acetal groups in these disaccharides and determine for each
of these identified groups if they have a- or B-configuration.
Glycosaminoglycans (GAGs) are heteropolysaccharides composed of repeating disaccharide units. These units have some
similar characteristics that allow them to be identified as GAGS.
Which of the structures are examples of glycosaminoglycans?
А.
C.
E.
HO
HO
COO™
H
Н
ОН
Н
CH₂OH
H
H
H
OH
OH
Н
CH₂OH
Н
OH H
ОН
o,so
H
H
Н
CH₂OH
H
H
ОН
H
CH₂OSO
H
NH
C=0
CH,
H
H
Н
NH
c=0
CH3
H
CH,OH
OH Н
ОН
OH
H
B.
D.
Н
НО
H
ОН H
CH₂OH
H ОН
Н
СОО
ОН
Н
Н
H
H
OSoz
H
Н
OH
б
H
CH₂OH
ОН
CH₂OSO
H
ОН
H
Н
OSO, H
Н NHSO,
Chapter 25 Solutions
Organic Chemistry (9th Edition)
Ch. 25.3 - Prob. 25.1PCh. 25.3A - Prob. 25.2PCh. 25.3B - Give an equaton for the complete transestenfcation...Ch. 25.4 - Prob. 25.4PCh. 25.4 - Several commercial laundry soaps contain...Ch. 25.4 - Prob. 25.6PCh. 25.4 - Prob. 25.7PCh. 25.5 - Prob. 25.8PCh. 25.6 - How would you use a simple extraction to separate...Ch. 25.6 - Prob. 25.10P
Ch. 25.8A - Circle the isoprene units in geranial, menthol,...Ch. 25.8B - Prob. 25.12PCh. 25.8B - Prob. 25.13PCh. 25 - Prob. 25.14SPCh. 25 - Prob. 25.15SPCh. 25 - Show how you would convert oleic acid to the...Ch. 25 - Give the general classification of each compound....Ch. 25 - Phospholipids undergo saponification much like...Ch. 25 - Prob. 25.19SPCh. 25 - Prob. 25.20SPCh. 25 - Prob. 25.21SPCh. 25 - Prob. 25.22SPCh. 25 - Prob. 25.23SPCh. 25 - The structure of limonene appears in Problem25-13....Ch. 25 - Prob. 25.25SPCh. 25 - Prob. 25.26SPCh. 25 - Prob. 25.27SPCh. 25 - Prob. 25.28SPCh. 25 - Prob. 25.29SPCh. 25 - Prob. 25.30SPCh. 25 - Prob. 25.31SPCh. 25 - Prob. 25.32SP
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- How many constitutional isomers are possible for a triglyceride containing one molecule each of palmitic acid, oleic acid, and stearic acid? (b) Which of these constitutional isomers are chiral?arrow_forwardHow to determine chirality?arrow_forwardWould you expect cholesterol to dissolve in water? Give your reasoning. State which class of alcohol does cholesterol belongs to. Then identify all the chiral centres on the diagram attatched.arrow_forward
- Draw the structure of the disaccharide maltose (-D-glucopyranosyl (1→4)-D-glucopyranose). Indicate with arrows the reducing end and the acetal functional group.arrow_forward27. Which of the following statements about cholesterol is not correct? CH3 CH3 H. d но Cholesterol (a) Cholesterol is a steroid that contains a tetracyclic ring system. (b) Cholesterol is a steroid that contains 8 chiral carbons and can form 28 or 256 stereoisomers. (c) Each atom or group attached to a ring-junction carbon (i.e., carbons a -e) is in a trans or axial position. Because of this the tetracyclic ring system is mostly flat. (d) Cholesterol is used to synthesized vitamin D, bile acids, sex hormones, and adrenocorticoid hormones. (e) Cholesterol is not found in the cell membranes of animals.arrow_forwardDraw a sawhorse projection for 3-aminobutan-2-ol representing where the two CH3-groups are syn-periplanar to each other.arrow_forward
- What are the chiral centers for this molecule?arrow_forwardExplain the meaning of the following: (a) Chiral carbon (b) Enantiomers (c) Esterificationarrow_forwardTo the following statement, answer true or false and explain your answer. Q)To be meso, a molecule must have at least two chiral centersarrow_forward
- Explain the basic principles of chirality ?arrow_forwardThis unit is N-acetylneuraminic acid, the most abundant member of a family of amino sugars containing nine or more carbons and distributed widely throughout the animal kingdom. Draw the open-chain form of this amino sugar. Do not be concerned with the configuration of the five chiral centers in the open-chain form.arrow_forwardIn this chapter, we saw that amino acids typically have a single chiral center and are therefore chiral. One amino acid, however, is achiral. Which one? Explain.arrow_forward
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