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Concept explainers
(a)
Interpretation:
Anomer of the aldohexose should be converted to its Haworth projection.
Concept Introduction:
Haworth formula indicates the connectivity of atoms in a ring structure. The linear structure should be used in the conversion.
(b)
Interpretation:
Anomer of the aldohexose should be converted to its Haworth projection.
Concept Introduction:
Haworth formula indicates the connectivity of atoms in a ring structure. The linear structure should be used in the conversion.
(c)
Interpretation:
Anomer of the aldohexose should be converted to its Haworth projection.
Concept Introduction:
Haworth formula indicates the connectivity of atoms in a ring structure. The linear structure should be used in the conversion.
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Chapter 20 Solutions
EBK GENERAL, ORGANIC, & BIOLOGICAL CHEM
- D-Arabinose can exist in both pyranose and furanose forms. a. Draw the α and β anomers of D-arabinofuranose. b. Draw the α and β anomers of D-arabinopyranose.arrow_forwarda.Label the four stereogenic centers in sorbitol as R or S. b.How are sorbitol and A related? c. How are sorbitol and B related?arrow_forwardWhat products are obtained from the reduction of a. d-idose? b. d-sorbose?arrow_forward
- Designating a Stereogenic Center as R or S When the Lowest-Priority Group Is Not Drawn Back Label each stereogenic center as Ror S. а. OH b. OHarrow_forwardHow many stereoisomers are possible for a. a ketoheptose? b. an aldoheptose? c. a ketotriose?arrow_forwardDraw both pyranose anomers of each aldohexose using a threedimensionalrepresentation with a chair pyranose. Label each anomer asα or β.arrow_forward
- For D-lyxose i. Draw an epimer at C3. ii. Draw a diastereomer that is not an epimer. iii. Draw the anomers of -D-lyxofuranose and -D-lyxopyranose. iv. Draw the product as Haworth projection when reacted with methanol catalysed by acid.arrow_forwardConvert each Haworth projection to its acyclic formarrow_forwardThe following isomerization reaction, drawn using D-glucose as starting material, occurs with all aldohexoses in the presence of base. Draw a stepwise mechanism that illustrates how each compound is formed.arrow_forward
- 1.3 How many stereogenic centres does the cholesterol have? но A. 5 В. 6 cholesterol C. 7 D. 8arrow_forwardPenicillin is well-known anti-bacterial agent discovered by Alexander Fleming. A O. N- H. В Which box contains a carbocyclic unsaturation? IZarrow_forwardDraw Haworth projection formulas for the a-anomer of monosaccharides with each of the following Fischer projection formulas. a. CHO HOH H- HO- H -ОН -Η OH CH₂OH b. CHO H -OH H -ОН HO H CH₂OHarrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
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