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Concept explainers
Interpretation:
The correct option among the given options has to be chosen.
Concept Introduction:
Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.
Isomers are the compounds that have same molecular formula but different structural formula. The main difference lies in the way the atoms are arranged in the structure. Isomers have different chemical and physical properties even when they have same molecular formula. This is known as Isomerism.
If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism. The isomers are known as constitutional isomers. They will have same molecular formula and same
For constitutional isomers to be present in cycloalkane, a minimum of four carbon atoms has to be present.
Cycloalkanes can also exhibit stereoisomerism. The difference between constitutional isomerism and stereoisomerism is that, the result of difference in connectivity of carbon atoms is known as constitutional isomerism and the result of differences in configuration is known as stereoisomerism. Stereoisomers are compounds that possess same molecular formula and connectivity of atoms but different orientations of atoms in space. Cis isomers are the one where the two substituted groups on different carbon atom are present above or below the plane or the ring of carbon atoms. Trans isomers are the one where the two substituted groups on different carbon atom are present one above and one below the plane or the ring of carbon atoms.
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Chapter 12 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
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- Starting with the open-chain form of D-ribose, write equations for the cyclization reactions that form the pyranose and the furanose formsarrow_forward4- Salicylamides are inhibitors for an enzyme called scytalone dehydratase. SAR shows that there are three important hydrogen bonding interactions. Explain whether you think quinazolines could act as a bioisostere for salicylamides. HBA OH O 00 N NHR Quinazolines Salicylamides Ph HBA 5- Structure IX (X = NH) is an inhibitor of a metalloenzyme called thermolysin and forms interactions as shown. Explain why the analogue (X = O) has reduced binding affinity by a factor of 1000 and why the analogue (X = SH) has roughly the same binding affinity. Structure IX H HBD Ala-113 Rarrow_forwardLimonene is a isoprenoid compound responsible for the characteristic odor of lemons. Propose a mechanism for the synthesis of limonene from isopentenyl pyrophosphate and dimethylallyl pyrophosphate. Limonenearrow_forward
- In the monosaccharide derivatives known as sugar alcohols, the carbonyl oxygen is reduced to a hydroxyl group. For example, D-glyceraldehyde can be reduced to glycerol. However, this sugar alcohol is no longer designated D or L. Why?arrow_forwardThe surface of the eye is wet by tears, and to minimize evaporation, the tear layer is coated with lipids. One of these lipids is built from oleic acid and a 32-carbon fatty acid that has a double bond between carbons 9 and 10 and a hydroxyl group attached to the omega carbon. The carboxyl group of oleic acid condenses with the hydroxyl group in the longer lipid. Draw the structure of the reaction product. It’s OK to draw a condensed structure.arrow_forwardD-Talose is a C2 epimer of D-galactose. Using the Fischer projection structure, draw the product of reaction of D-talose with the given reagent or enzyme and write the systematic name of the product. 1. NaBH₁ 4.2,4-DNP 2. Reaction with oxidase to form the alduronic acid 3. Reaction with kinase at C3 5. Reaction with aminotransferase and then acetyltransferase at C4arrow_forward
- With alanine AA, and using citric acid cycee and glycolysis, which Carbon atom would be labeled 1st with 14C n succinate? Why?arrow_forwardCarboxylic acids that undergo nucleophilic acyl substitutionreactions are often first converted to thioesters. For example,acetic acid forms thioester with a molecule called coenzyme A,which has a sulfhydryl group What is the leaving group in these reactions?arrow_forwardAnswer the following questions: a. How many possible stereoisomers does D-ribose have? b. What bond is present between the fatty acyl group and the C-2 amino group of sphingosine in a Ceramide?arrow_forward
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