From reaction of scheme A, which of the following is/are true about the linearand/or cyclic structure(s) A?AHH--OHOHHHOHOI HO-H.OHH2 HO--HHH3 HOH-H4 HOHOHOH5 HO-HHLinear KetoseB) It is a linear ketose that cyclizes into an beta configurationCIt is a linear aldose that cyclizes into a beta configurationLinear aldoseEBeta anomeric configuration

Option a: This option is correct because this is linear ketose. Option b: This option is incorrect…

Answered: From reaction of scheme A, which of the…

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter25: Biomolecules: Carbohydrates

Section25.SE: Something Extra

Problem 44AP

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The C2-epimer of D-xylose is called (blank 1). The enediol rearrangementconverts an aldose into a (blank 2). The aldopentose embedded in RNA is(blank 3). An aldopentose would have (blank 4) possible stereoisomers,of whichBlankwould be D-sugars. An ketopentose would have (blank 4) possiblestereoisomers, of which (blank 5) would be D-sugars
но CH₂OH Но НО anx CH₂OH НО OH CH3OH H* ӧ: H OH OH B-D-glucose Treatment of B-D-glucose with methanol in the presence of an acid catalyst converts it into a mixture of two compounds called methyl glucosides. Draw curved arrow to show the movement of electrons in this step of the reaction mechanism. Arrow-pushing Instructions HO H₂O CH₂OH Q-CH3 OCH3 + HO OH НО methyl B-D-glucoside CH₂OH -Ö: ний но НО CH₂OH НО он methyl a-D-glucoside OH OCH3 Н w-CH3 H2O
Although reaction occurs in sugars also. H, OH H H-C-OH Oxidizing agent OH OH Н-С-ОН Н-С-ОН C=0 R OH R R R Aldose Aldonic acid anion Ketose Enediol Copyright © 2007 Pearson Prentice Hall, Inc. Draw the reaction above substituting D-fructose instead of the generalized ketose structure shown above (you need to draw all 4 structures). Slan and upload your drawing.
Compound A is a D-aldopentose that can be oxidized to an optically inactive aldaric acid B. On Kiliani-Fischer chain extension, A is converted into C and D; C can be oxidized to an optically active aldaric acid E, but D is oxidized to an optically inactive aldaric acid F. What is the structure of compound F? • Use the wedge/hash bond tools to indicate stereochemistry where it exists. You do not have to explicitly draw H atoms. If a group is achiral, do not use wedged or hashed bonds on it. • Show stereochemistry in a meso compound. • Do not include lone pairs in your answer. They will not be considered in the grading.
Classify each saccharide as an aldose or a ketose. Also classify each as a triose, tetrose, pentose, and so on. но, CH, но H-C-OH H-C-OH H-C-OH HC OH он a. b. OH H H HO-CH:-C H OH H-C-OH ÓH с. HO-CH; d.
14) Which of the following descriptions apply to both dihydroxyacetone and D-fructofuranose? I. They are both ketoses. II. They are both aldoses. III. They are enatiomers of each other. IV. They are diastereomers of each other. V. They are epimers of each other. A) I B) II C) I and III D) II and IV E) II, IV and V
How many chiral centers are in B-d-glucopyranose and a-D-galactopyranose? How many stereoisomers of these two aldohexoses can theoretically be drawn?
does structure E represent fructofuranose? explain
CH OH CH OH CH,OH CHOH CH2 CHOH O OH OH CH2 HO OH C 3 CHOH OH OH OH OH OH OH OH OH Download Image... The oligosaccharide was subjected to exhaustive methylation followed by acid hydrolysis. The product obtained for manosaccharide A is O A. 1,2,3,4,6-penta-0-methylfructose O B. 2,3,4-tri-O-methyfructose OC 1,3,4,6-tetra-O-methylfructose O D.2,3,4,5-tetra-O-methylfructose P Type here to search
13.Draw the Fisher projection of the monosaccharide which gives the two diastereomeric aldoses upon chain-extension with 1. HCN/KOH 2. H₂/Pd 3. H30+ НО НО CHO -OH CH2OH НО CHO OH OH CH2OH
Provide suitable responses for questions (a) –(j).| 6 CH2OH 4 ОН OH OH 2.
Draw the product of the mutarotation of the monosaccharide shown below. ОН CH₂OH ОН ОН H3O+ ОН of в

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