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 17.14P
17-14 Following are structural formulas for two steroid hormones.
(a) Name the functional groups in each.
(b) Mark all stereocenters in each hormone and state how many stereoisomers are possible for each.
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(a) Draw a skeletal structure of the anabolic steroid 4-androstene-3,17-dione, also called "andro,"
from the following description. Andro contains the tetracyclic steroid skeieton with carbonyl
groups at C3 and C17, a double bond between C4 and C5, and methyl groups bonded to C10
and C13. (b) Add wedges and dashes for all stereogenic centers with the following information:
the configuration at C10 is R, the configuration at C13 is S, and all substituents at ring fusions are
trans to each other.
envellum.ecollege.com/course.html?courseld3D16862399&OpenVellumHMAC=ceb1e764f513099cc21e017af3d6469f#10001
MReview Consta
Look at the structures of the two male sex hormones shown below.
OH
H,C
H,C
Part A
H3C
H3C
Part B
HO
Testosterone
Androsterone
To which class of chemical reactions does this change belong?
O These reactions are polymerization.
O These reactions are dehydration.
O These reactions are oxidations and reductions.
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For each of the following statements, indicate whether they are true or false and, in the second case, correct them appropriately:
a) In biological systems, copper is often found in the form of blue proteins, so called because they absorb light from 450 to 500 nm
b) Aldehyde oxide reductase is a copper enzyme that oxidizes aldehydes to carboxylic acids
c) The only metal that carries oxygen transport in living beings is iron
d) Superoxide dismutase catalyzes the decomposition of the anion superoxide in water and hydrogen peroxide
e) Holochromodulin is activated when insulin levels decrease, binding to its receptors.
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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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- 17-74 Glucose, C6H12O6, contains an aldehyde group but exists predominantly in the form of the cyclic hemiacetal shown here. We will discuss this cyclic form of glucose in Chapter 20. A cyclic hemiacetal is formed when the —OH group of one carbon bonds to the carbonyl group of another carbon. (a) Which carbon in glucose provides the —OH group and which provides the —CHO group? (b) Draw the alternative chair confirmations of D-glucose and state which of the two is the more stable.arrow_forward13-27 Define autoxidation.arrow_forward16-54 Several poisonous plants, including Atropa belladonna, contain the alkaloid atropine. The name “belladonna” (which means “beautiful lady”) probably comes from the fact that Roman women used extracts from this plant to make themselves more attractive. Atropine is widely used by ophthal mologists and optometrists to dilate the pupils for eye examination. Classify the amino group in atropine as primary, secondary, or tertiary. Locate all stereocenters in atropine. Account for the fact that atropine is almost insoluble in water (1 g in 455 mL of cold water) but atropine hydrogen sulfate is very soluble (1 g in 5 mL of cold water). Account for the fact that a dilute aqueous solution of atropine is basic (pH approximately 10.0).arrow_forward
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