Concept explainers
(a)
Interpretation:
A sugar that is
Concept Introduction:
Epimer: Epimer is one of a pair of stereoisomers. Epimers are the monosaccharides which differ in the structure at only one of the asymmetric center and they are particular kind of stereoisomers that are not enantiomers. For example,
b)
Interpretation:
A sugar that is
Concept Introduction:
Epimer: Epimer is one of a pair of stereoisomers. Epimers are the monosaccharides which differ in the structure at only one of the asymmetric center and they are particular kind of stereoisomers that are not enantiomers. For example,
c)
Interpretation:
A sugar that is
Concept Introduction:
Epimer: Epimer is one of a pair of stereoisomers. Epimers are the monosaccharides which differ in the structure at only one of the asymmetric center and they are particular kind of stereoisomers that are not enantiomers. For example,
d)
Interpretation:
A sugar that is
Concept Introduction:
Epimer: Epimer is one of a pair of stereoisomers. Epimers are the monosaccharides which differ in the structure at only one of the asymmetric center and they are particular kind of stereoisomers that are not enantiomers. For example,
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Essential Organic Chemistry (3rd Edition)
- What is the configuration of each of the asymmetric centers in the Fischer projection ofa. d-glucose? b. d-galactose? c. d-ribose? d. d-xylose? e. d-sorbose?arrow_forwardD-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_forward15. Are mannose and galactose epimers? Allose and altrose? Gulose and talose? Ribose and arabinose? Consider only D-sugars. Explain your answers. 16. Which of the pairs in Problem 15 are diastereoisomers?arrow_forward
- Part A What sugar is the C-3 epimer of D-psicose? Spell out the full name of the compound.arrow_forwardWhich one of the following is NOT a possible completion of the following reaction? CH₂OH HO- HO- 1. NaBH, ? 2. acidic workup HO- H A. D-talose B. D-tagatose C. the C-3 epimer of D-gulose D. the C-5 epimer of L-psicose E. the C-5 epimer of L-allose F. the C-3 epimer of D-idose G. g. the C-3 epimer of L-glucose -H -H -H -OH CH₂OHarrow_forwardFor 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_forward
- ОН 2. the Fischer projection that corresponds to the monosaccharide shown in the box. О н HO OH но- OH НО 0 OH OH OH H-OH -ОН 3. the Haworth projection that corresponds to the structure shown in the box. OCH, НО OH athul algasida О Н H-OH H-OH но-н но- HO -O OCH, OH O H H-OH НО-Н H-OH H-OH OH ОН НО НО OOCH, HO H-OH но-н но-н OH H-OH OH НО OH OCH, OH OH О н H-OH H-OH H НО но-н ОН НО -oOCH, ОН он онarrow_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_forwardWhich one of the following is NOT a possible completion of the following reaction? CH₂OH HO HO 1. NaBH 2. acidic workup HO 80 F3 A. D-talose B. D-tagatose C. the C-3 epimer of D-gulose D. the C-5 epimer of L-psicose E. the C-5 epimer of L-allose F. the C-3 epimer of D-idose G. g. the C-3 epimer of L-glucose OA B C OD OE OF U G H- F4 F5 H H -H -OH CH₂OH F6 F7 DII FBarrow_forward
- Draw Fischer projection of the mirror image (enantiomer) D-robose c. Are these molecules superimposable? d. What type of isomerism is represented by these mirror images? e. Construct a model of a third isomer that is not a mirror image of the two above.arrow_forwardWhat sugar is the C-4 epimer of d-lyxose?arrow_forwardDraw the Fischer projections of the four aldotetroses. Draw the D-sugar on the left and its L-isomer directly to the right of it. Be sure you select the appropriate hydroxy group so that the bond carbon is connected to the oxygen bond. Draw D sugar 1 Draw L sugar 1 Answer Bank ČH2OH CH2OH H -OH НО- Draw D sugar 2 Draw L sugar 2 CH2OH CH2OH 00 00 00 00arrow_forward
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