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Concept explainers
(a)
Interpretation:
Presence or absence of glycerol, sphingosine, phosphate, ester, carboxyl group, hydroxyl group and steroid nucleus in leukotriene C4 needs to be determined.
Concept introduction:
Glycerol is a simple polyol compound with three carbons and with three carbons and hydroxyl groups in each carbon
Sphingosine is an 18-carbon
Phosphate is a phosphorous atom bonded to four oxygen atoms. One oxygen is bonded to phosphorous with a double bond and others are bonded with a single bond and bear a negative charge.
Ester group is a derivative of a
Carboxyl group formed when a carbon atom is bonded to an oxygen atom with a double bond and to a hydroxyl group.
Hydroxyl group is formed when an oxygen is bonded to a hydrogen.
Steroid nucleus is found in all steroids. It is made up of three cyclohexanes and one cyclopentane bonded together. Steroids vary by the
(b)
Interpretation:
Presence or absence of glycerol, sphingosine, phosphate, ester, carboxyl group, hydroxyl group and steroid nucleus in estradiol needs to be explained.
Concept introduction:
Glycerol is a simple polyol compound with three carbons and with three carbons and hydroxyl groups in each carbon
Sphingosine is an 18-carbon diol with an amino group and a double bond
Phosphate is a phosphorous atom bonded to four oxygen atoms. One oxygen is bonded to phosphorous with a double bond and others are bonded with a single bond and bear a negative charge.
Ester group is a derivative of a carboxylic acid group. The hydrogen attached to oxygen in carboxylic acid is replace with an organic fragment in esters.
Carboxyl group formed when a carbon atom is bonded to an oxygen atom with a double bond and to a hydroxyl group.
Hydroxyl group is formed when an oxygen is bonded to a hydrogen.
Steroid nucleus is found in all steroids. It is made up of three cyclohexanes and one cyclopentane bonded together. Steroids vary by the functional groups attached to this core and oxidation states of the ring.
(c)
Interpretation:
Presence or absence of glycerol, sphingosine, phosphate, ester, carboxyl group, hydroxyl group and steroid nucleus in lecithin must be mentioned
Concept introduction:
Glycerol is a simple polyol compound with three carbons and with three carbons and hydroxyl groups in each carbon
Sphingosine is an 18-carbon diol with an amino group and a double bond
Phosphate is a phosphorous atom bonded to four oxygen atoms. One oxygen is bonded to phosphorous with a double bond and others are bonded with a single bond and bear a negative charge.
Ester group is a derivative of a carboxylic acid group. The hydrogen attached to oxygen in carboxylic acid is replace with an organic fragment in esters.
Carboxyl group formed when a carbon atom is bonded to an oxygen atom with a double bond and to a hydroxyl group.
Hydroxyl group is formed when an oxygen is bonded to a hydrogen.
Steroid nucleus is found in all steroids. It is made up of three cyclohexanes and one cyclopentane bonded together. Steroids vary by the functional groups attached to this core and oxidation states of the ring.
(d)
Interpretation:
Presence or absence of glycerol, sphingosine, phosphate, ester, carboxyl group, hydroxyl group and steroid nucleus in fatty acid needs to be explained.
Concept introduction:
Glycerol is a simple polyol compound with three carbons and with three carbons and hydroxyl groups in each carbon
Sphingosine is an 18-carbon diol with an amino group and a double bond
Phosphate is a phosphorous atom bonded to four oxygen atoms. One oxygen is bonded to phosphorous with a double bond and others are bonded with a single bond and bear a negative charge.
Ester group is a derivative of a carboxylic acid group. The hydrogen attached to oxygen in carboxylic acid is replace with an organic fragment in esters.
Carboxyl group formed when a carbon atom is bonded to an oxygen atom with a double bond and to a hydroxyl group.
Hydroxyl group is formed when an oxygen is bonded to a hydrogen.
Steroid nucleus is found in all steroids. It is made up of three cyclohexanes and one cyclopentane bonded together. Steroids vary by the functional groups attached to this core and oxidation states of the ring.
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Chapter 19 Solutions
EBK GENERAL, ORGANIC, & BIOLOGICAL CHEM
- Q1: For each molecule, assign each stereocenter as R or S. Circle the meso compounds. Label each compound as chiral or achiral. OH HO CI Br H CI CI Br CI CI Xf x f g Br D OH Br Br H₂N R. IN Ill I -N S OMe D II H CO₂H 1/111 DuckDuckGarrow_forwardThese are synthesis questions. You need to show how the starting material can be converted into the product(s) shown. You may use any reactions we have learned. Show all the reagents you need. Show each molecule synthesized along the way and be sure to pay attention to the regiochemistry and stereochemistry preferences for each reaction. If a racemic molecule is made along the way, you need to draw both enantiomers and label the mixture as "racemic". All of the carbon atoms of the products must come from the starting material! ? H Harrow_forwardQ5: Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Clearly show stereochemistry by drawing the wedge-and-dashed bonds. Describe the relationship between each pair of the stereoisomers you have drawn.arrow_forward
- Classify each pair of molecules according to whether or not they can participate in hydrogen bonding with one another. Participate in hydrogen bonding CH3COCH3 and CH3COCH2CH3 H2O and (CH3CH2)2CO CH3COCH3 and CH₂ CHO Answer Bank Do not participate in hydrogen bonding CH3CH2OH and HCHO CH3COCH2CH3 and CH3OHarrow_forwardNonearrow_forwardQ4: Comparing (3S,4S)-3,4-dimethylhexane and (3R,4S)-3,4-dimethylhexane, which one is optically active? Briefly explain.arrow_forward
- Nonearrow_forwardNonearrow_forwardGiven the standard enthalpies of formation for the following substances, determine the reaction enthalpy for the following reaction. 4A (g) + 2B (g) → 2C (g) + 7D (g) AHrxn =?kJ Substance AH in kJ/mol A (g) - 20.42 B (g) + 32.18 C (g) - 72.51 D (g) - 17.87arrow_forward
- Determine ASran for Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(aq) given the following information: Standard Entropy Values of Various Substance Substance So (J/mol • K) 60.9 Zn(s) HCl(aq) 56.5 130.58 H2(g) Zn2+(aq) -106.5 55.10 CI (aq)arrow_forward3) Catalytic hydrogenation of the compound below produced the expected product. However, a byproduct with molecular formula C10H12O is also formed in small quantities. What is the by product?arrow_forwardWhat is the ΔHorxn of the reaction? NaOH(aq) + HCl(aq) → H2O(l) + NaCl(aq) ΔHorxn 1= ________ kJ/molarrow_forward
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