a. Pick one of the sugars above you did not find a mirror image for; draw an arrow pointing to that sugar. Next, below this question draw that sugar in the cyclized ring form as a β-pyranose ringb. Show the β(13) linkage between two of the same ring you drew. 4. (4 points)For the Fischer projections below identify any mirror images of each other. Place circles aroundthe first pair found. Use squares if you find a second pair. Use Triangles if you find a third pair.b. How many chiral carbons are on each of these sugars?HO-아OH HO-애Ho-OHHOноHO-아OH HOHaHo-HO--O4 HoHCa. Pick one of the sugars above you did not find a mirror image for; draw an arrow pointing to thatsugar. Next, below this question draw that sugar in the cyclized ring form as a B-pyranose ring.b. Show the B(1->3) linkage between two of the same ring you drew.

Sugars are carbohydrates consisting of carbon, hydrogen and oxygen. Sugar has an open chain…

HO- OH Ho- H어- H Ho- Ho HO Ho flo- for HO HO HO OH Ha Ha Ho HO- O4 HCL OH lo- a. Pick one of the sugars above you did not find a mirror image for, draw an arrow pointing to that sugar. Next, below this question draw that sugar in the cyclized ring form as a B-pyranose ring. b. Show the B(1>3) linkage between two of the same ring you drew.

HO- OH Ho- H어- H Ho- Ho HO Ho flo- for HO HO HO OH Ha Ha Ho HO- O4 HCL OH lo- a. Pick one of the sugars above you did not find a mirror image for, draw an arrow pointing to that sugar. Next, below this question draw that sugar in the cyclized ring form as a B-pyranose ring. b. Show the B(1>3) linkage between two of the same ring you drew.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter13: Substitution

Section: Chapter Questions

Problem 5CTQ

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Similar questions

For each Fischer projection shown below: a. Draw all possible stereoisomers b. Label each chiral center as R or S c. Label the enantiomers and diastereomers (as a reminder "CHO" is the shorthand way of indicating an aldehyde) CHO H H H- HO -Br -OH CH₂OH OH -CHO -H CO₂H 2
III. Consider the compound below. H. F HO- HO -HO- (Atomic number: H-1, C-6, O-8, F-9) a. How many chiral centers are in the molecule? b. How many stereoisomers are there for the compound? c. Draw the Fischer projection for each of the stereoisomer and determine the absolute configuration (R or S). Label each using I, II, etc. d. Which pairs are enantiomers? Which are diastereomers?
Be sure to answer all parts. The Fischer projection of D-glucose is shown below. Draw its mirror image as a Fischer projection. CHO OH HO H. draw structure... H. OH H. OH CH,OH
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 он
A Fischer projection of a monosaccharide is shown below: CH₂OH C=O H НО HO -OH H H CH₂OH a. Classify this monosaccharide (e.g., aldotriose) b. Does it have the D or L configuration? c. Which carbon and oxygen become bonded in the furanose ring form of this monosaccharide (e.g., C206, where 06 means the oxygen on carbon 6, or "not formed")? d. Which carbon and oxygen become bonded in the pyranose ring form of this monosaccharide e.g., C206 or "not formed"?
A Fischer projection of a monosaccharide is shown below: CHO H HO- HO H -OH H -H -OH CH₂OH a. Classify this monosaccharide (e.g., aldotriose) b. Does it have the D or L configuration?| v c. Which carbon and oxygen become bonded in the furanose ring form of this monosaccharide (e.g., C206, where 06 means the oxygen on carbon 6, or "not formed")? d. Which carbon and oxygen become bonded in the pyranose ring form of this monosaccharide e.g., C206 or "not formed"?
a. How many stereocenters are present in this monosaccharide? CH,OH C=0 но H- O- H- HO- ČH2OH b. How many stereoisomers are possible for this monosaccharide? CHO H- HO- H- H- CH2OH
1. Which of the following is not true to the monosaccharide below? H. ОН но- -H- но ОН ĆH2OH O It is the Fischer Projection of D-glucose. It is an aldohexose having 4 chiral centers and 24 stereoisomers. It is has a D-glucose because OH- group bonded to the highest numbered chiral C is pointing to the right. It is a polyhydroxy ketone having 8 enantiomeric pair.
Draw the Fischer projection for structure I. Circle each chiral group in structure II.
ITEM #5 (Everyone should look at this question). Consider the two Fischer projections shown at right. They CH CH are NOT of the same molecule. H- -HO- HO In a short paragraph, explain why the molecules shown are NOT the same. OH но- H. HO. но In your explanation, describe how the groups of a Fischer projection are positioned in the ACTUAL molecule (Are the molecules flat in real life, or three-dimensional in real life? If three-dimensional, where exactly are the Hs and OHs positioned when one interprets these projections?) H- HO но H- CH,OH ČH;OH Also in your explanation, describe why the second molecule is not simply the first molecule flipped over (like a pancake).
8. Which of the following monosaccharides will react with Tollens' reagent? Circle all that apply. COOH CH,OH CH2OH HỌ OCH3 HO HO-H OH H. OH CH2OH CH2OH OH II II IV V 9. Which of the following carbohydrates is sucrose? OH OH HO но OH OH HO HO HỌ ÓH ÓH HOl HO OH II OH CHO OH HO/. HO. OH но OH HO. OH HO, HO, OH HO HO. HO!" HO OH HO. III OH HO IV HO Но
B4. CH₂OH H H но. H CH₂OH OH H AR Zeval O OH H H HO H O H OH OH H OH H OH H OH OH/ H H Lactose H OH НО. H OH H H Sucrose The structures of the disaccharides lactose and sucrose are shown above. a) Identify the monosaccharide residue that is common to both disaccharides. OH b) Identify and explain the diastereomeric relationship between two of the monosaccharide units in these sugars. c) Draw a simple mechanism for the lactase-catalyzed cleavage of the glycosidic bond in lactose. d) Explain why lactose and sucrose give different results in the Benedict's test.