Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 17, Problem 17.54P
17-54 Following is the structure of immunosuppressant FK-506, a molecule shown to disrupt calcineurin-mediated signal transduction in T-lymphocytes.
(a) There are three carbon—carbon double bonds present in this molecule. Which of the three has the potential for cis/trans isomerism? Assign a cis or trans con?guration to each carbon-carbon double bond that has this possibility.
(b) How many stereocenters are present in this molecule? How many stereoisomers are possible for it?
(c) Are there any aromatic components in this molecule?
(d) Consider the two carbon atoms marked with asterisks. Assign an R or S con?guration of each stereocenter.
(e) Because of the presence of a 21-member ring, this molecule is described as a macrocycle. This ring is fashioned by three types of bonds, several carbon-carbon bonds, one ester, one hemiacetal, and one amide. Locate the ester and the hemiacetal.
(f) Draw the structural formula of the long chain compound that would result if the hemiacetal were to be cleaved to an alcohol and a carbonyl group.
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Chapter 17 Solutions
Introduction to General, Organic and Biochemistry
Ch. 17.2 - Problem 17-1 Wrtie the IUPAC name for each...Ch. 17.2 - Prob. 17.2PCh. 17.2 - Prob. 17.3PCh. 17.4 - Prob. 17.4PCh. 17.4 - Prob. 17.5PCh. 17.4 - Problem 17-6 Show the reaction of benzaldehyde...Ch. 17.4 - Problem 17-7 Identify all hemiacetals and acetals...Ch. 17.5 - Prob. 17.8PCh. 17 - 17-9 Answer true or false. (a) The one aldehyde...Ch. 17 - Prob. 17.10P
Ch. 17 - 17-11 What is the difference in structure between...Ch. 17 - 17-12 Is it possible for the carbon atom of a...Ch. 17 - 17-13 Which compounds contain carbonyl groups?Ch. 17 - 17-14 Following are structural formulas for two...Ch. 17 - 17-15 Draw structural formulas for the four...Ch. 17 - Prob. 17.16PCh. 17 - Prob. 17.17PCh. 17 - 17-18 Draw structural formulas for these ketones....Ch. 17 - 17-19 Write the JUPAC names for these compounds.Ch. 17 - Prob. 17.20PCh. 17 - 17-2 1 Explain why each name is incorrect. Write...Ch. 17 - Prob. 17.22PCh. 17 - Prob. 17.23PCh. 17 - 17-24 In each pair of compounds, select the one...Ch. 17 - Prob. 17.25PCh. 17 - 17-26 Account for the fact that acetone has a...Ch. 17 - 17-27 Pentane, 1-butanol, and butanal all have...Ch. 17 - 17-28 Show how acetaldehyde can form hydrogen...Ch. 17 - 17-29 Why can’t two molecules of acetone form a...Ch. 17 - 17-30 Answer true or false. (a) The reduction of...Ch. 17 - 17-3 1 Draw a structural formula for the principal...Ch. 17 - Prob. 17.32PCh. 17 - 17-33 What simple chemical test could you use to...Ch. 17 - 17-34 Explain why liquid aldehydes are often...Ch. 17 - 17-35 Suppose that you take a bottle of...Ch. 17 - 17-36 Explain why the reduction of an aldehyde...Ch. 17 - Prob. 17.37PCh. 17 - Prob. 17.38PCh. 17 - Prob. 17.39PCh. 17 - Prob. 17.40PCh. 17 - Prob. 17.41PCh. 17 - Prob. 17.42PCh. 17 - Prob. 17.43PCh. 17 - Prob. 17.44PCh. 17 - Prob. 17.45PCh. 17 - Prob. 17.46PCh. 17 - 17-47 What is the characteristic structural...Ch. 17 - Prob. 17.48PCh. 17 - Prob. 17.49PCh. 17 - Prob. 17.50PCh. 17 - Prob. 17.51PCh. 17 - Prob. 17.52PCh. 17 - Prob. 17.53PCh. 17 - 17-54 Following is the structure of...Ch. 17 - Prob. 17.55PCh. 17 - Prob. 17.56PCh. 17 - Prob. 17.57PCh. 17 - Prob. 17.58PCh. 17 - Prob. 17.59PCh. 17 - 17-60 1-Propanol can be prepared by the reduction...Ch. 17 - Prob. 17.61PCh. 17 - 17-62 Show how to bring about these conversions....Ch. 17 - Prob. 17.63PCh. 17 - Prob. 17.64PCh. 17 - Prob. 17.65PCh. 17 - Prob. 17.66PCh. 17 - 17-67 Draw structural formulas for these...Ch. 17 - Prob. 17.68PCh. 17 - 17-69 Propanal (bp 49°C) and 1-propanol (bp 97°C)...Ch. 17 - 17-70 What simple chemical test could you use to...Ch. 17 - Prob. 17.71PCh. 17 - 17-72 The following molecule is an enediol; each...Ch. 17 - 17-73 Alcohols can be prepared by the...Ch. 17 - 17-74 Glucose, C6H12O6, contains an aldehyde group...Ch. 17 - Prob. 17.75PCh. 17 - Prob. 17.76PCh. 17 - Prob. 17.77PCh. 17 - 17-78 Complete the following equation for these...Ch. 17 - 17-79 Write an equation for each conversion. (a)...
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