Q: Threose is an aldose monosaccharide. The Fischer projection of D-threose is shown.
A: representation of molecules : Different types of projection formulae I)wedge&dash 2)Fischer 3)…
Q: Draw the Fischer Projection of the following sugars. но н Но н НО Н но. Н НО. но н но н ОН
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Q: Which of the following pair gives the below osazone? H. NNHCSH5 ENNHC6H5 но- -- H- HO- H HO- ČH2OH…
A: Carbohydrate chemistry:
Q: Click on all glycosidic bonds in the structure below HO CH3 HO HO- CN H. HO, H. CH3 Linamarin, a…
A: Glycosidic bond or glycosidic linkage: Covalent bond that links a carbohydrate (sugar) molecule to…
Q: y the enantiomer of the Fischer Projections shown below. Label all tric carbons as R or S. CI CH2OH…
A: Enantiomers are the stereoisomers which are non-superimposable mirror images of each other.
Q: Draw the Fischer projections of the four aldotetroses. Draw the D-sugar on the left and its L-isomer…
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Q: A(n) ________ is an achiral compound that contains chiral centers but is superimposable on its…
A: Fill in the blanks--
Q: NH2 NCH2 CH2 The stereochemistry around this chiral carbon is: O cannot be determined. Rand S OR OS
A:
Q: Which of the following is the C3 epimer of L-idose? но но Но но H- он H- OH но но но H. OH OH H- он…
A: The C-3 epimer of L-idose is given below
Q: What monosaccharides are formed in the Kiliani-Fischer synthesis starting with D-xylose? HCFO H--OH…
A: -> Kiliani-fischer synthesis involves addition of cyanide ion to an open chain aldehyde which…
Q: Draw Fischer projections for the product(s) formed by reaction of d-ribose with the following. In…
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Q: CH2OH C=0 How many stereoisomers does sorbose have? H-C-OH Draw all the Lisomers of this sugar. Но-С…
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Q: What is the configuration of the asymmetric centers in the Fischer projection of D-sorbose?
A: When the substituents having higher priority to lower priority are clockwise in position at…
Q: CH2OH H- HO- Но- -H- H- -ОН CH2OH D-Sorbose
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Q: 2. Draw a Fischer Projection of (2R,3R) erythrose.
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 1. Molec Н. HO HO- H H- 0 -H -H -OH -OH CH₂OH D-mannose Draw the structures of each blomolecule…
A: Fischer , Haworth and chair conformational structure are given as:
Q: CH; 13. H OH CH,CH, The Fischer projection above is of a. a D enantiomer b. an L enantiomer c. both…
A: If the OH on the bottom chiral center is at right, the sugar has D-configuration and if the OH on…
Q: Label each chiral carbon either as R or S stereoisomers. OH b. HS HO, а. с. *"Br H. H2N H
A: The two configurations of the stereochemistry are R and S configurations. R stands for rectus and…
Q: The starting material is shown as a Fischer projection. Unless otherwise stated, the possible…
A: In general alkyl halides undergo substitution and elimination reaction 3o alkyl halides are…
Q: The following compound has two asymmetric centers and four stereoisomers. Two of these are…
A: The priority to the substituents attached to stereogenic centers is given by following these rules:…
Q: 2. Label each chiral carbon either as R or S stereoisomers. OH b. HS Br a. H. H2N H
A: Chiral Carbon: The carbon center in which all the 4 attached group is different Then those carbon is…
Q: This compound, drawn as a Fischer projec Br Br CH3 Br HO, OH
A: R and S given by CIP rule in which prority is given which have highest atomic mass If we rotate…
Q: 6 CH2OH OH 1 2 OH 3 OH (c) Trace and identify the acetal in the above monosaccharide. (d) Draw the…
A: Given is monosaccharide.
Q: . Identify cach amino shown below in Fischer projection. Indicate whether the D- or L- enantiomer is…
A: Stereoisomers that are mirror images, but not superimposable upon each other is called an…
Q: Which of the following compound(s) is(are) epimer(s) of D-glucose? сно но- но- сно сно сно но- H- OH…
A: Epimer is a diastereomers the that have oposite configuration at only one of two or three chiral…
Q: 2) a-Draw the proper flat, Haworth form and most stable chair conformation for the B- anomer of L-…
A:
Q: Which of the following is an epimer of D-galactose? Сно H- -OH но- -H но- H- -OH ČH2OH D-galactose
A: Applying concept of epimer having different configurations at one carbon center.
Q: The epimerization of D-glucose to D-mannose forms an enolate ion with a double bond between which of…
A:
Q: Q4. Draw a Fischer projection of L-psicose. Psicose is the C3 epimer of fructose. Draw a chair…
A: Epimers are carbohydrates which vary in one position for the placement of the -OH group. For a sugar…
Q: Draw Fischer projections for the product(s) formed by reaction of d-galactose with the following. In…
A: The structure of d-galactose could be drawn as,
Q: These two structures, shown as Fischer projections, are: Br H3C- H- H-N- H- NH2 Br the same compound…
A: Stereisomers are those which have same molecular formula but different arrangement of atoms in…
Q: Assign a configuration (R or S) at each chiral centres/carbons :OH :Br © :O:
A: To assign the R-S nomenclature , we first number the four groups attached to the chiral carbon atom…
Q: Draw Fischer projections for the product(s) formed by reaction of d-galactose with the following. In…
A: The D-galactose can be oxidized to form aldaric acid in the presence of strong oxidizing agent HNO3.…
Q: Which of the following is a furanose ring? CH2OH O. H ÓH OH HO a. CH2OH -O OH OH OH OH b. Both of…
A: A furanose is a five membered ring system. A furanose ring contain four carbon atom and one oxygen…
Q: Which structure of Erythrose is referred to by the given Fischer projection? A.L-Erythrose B.…
A: D and L configuration is decided by the yellow highlighted OH group .
Q: Show the cyclic rearrangement (cyclic hemiacetal form) of the following monosaccharide. Use expanded…
A:
Q: Draw Fischer projections for the product(s) formed by reaction of d-ribose with the following. In…
A: In presence of strong oxidizing agent HNO3, D-galactose is oxidized to form aldaric acid. Because of…
Q: Draw Fischer projections for the product(s) formed by reaction of d-galactose with the following. In…
A: When three-dimensional molecules are represented in two-dimensional form, a representation called…
Q: CH3 JCH3 CH3 1) вНз 2) Н,О2, NaOH, Нао он H. H mix of enantiomers
A:
Q: Draw Fischer projections for all 2-ketopentoses. Which are d-2-ketopentoses, which are…
A: Fischer projections for all 2-ketopentoses. Which are d-2-ketopentoses, which are l-2-ketopentoses,…
Q: Please draw the expanded structure of D-altrose and its Fischer Projection (chiral C represented as…
A:
Q: Draw Fischer projections of the acyclic form of each of these sugars. (a но ÕH ÕH но, HO HO.
A: a) The Fischer projection of the given sugar is,
Q: Draw the enantiomer (in a Fischer projection) of the beta-D-glucose
A: Non superimposed mirror images are called enantiomers If we move from one Enantiomer to another…
Q: lof the saccharides which Componds. are B-hexoses.No mone than 2'ansuers! HO HO 19H1 H.
A: The option A and C are haxose as it has 5-C atom in ring and 1 C-atom attached to ring carbon. i.e 6…
Q: How many stereogenic centers are present in α-D-galactose?
A: The chiral carbon atom bearing four different groups is called as stereo-centre. The position of the…
Q: What is the configuration of the asymmetric centers in the Fischer projection of D-xylose?
A: An asymmetric carbon atom is represented as a cross in Fischer projection. The carbon chain is kept…
Q: CH₂OH C10 HỌ—CH HC-OH HỌ—CH CH2OH Classify the carbohydrate shown here. A) ketohexose B) ketopentose…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: OH HO H OH H. OH CH,OH CH OH CH OH H. OH OH HO OH он H. CH OH CH OH O OH H. O OH OH OH HO OH
A: Haworth structure of Glucose is represented as follows. Correct option is D.
Q: Which d-aldohexose in its beta-d-pyranose form has only one OH group in the axial position? O…
A: The beta-d-pyranose forms of given d-aldohexoses are shown below, (1) D-allose (2) D-galactose
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- Complete the following heterocyclic reactions: ) اكمل التفاعلات التالية( NBS ? 1- он H CN ? Conc. HNO , / ACOH 2- -CH,Please fill in the missing reactants, reagents or products in the following reactions. Indicate relative stereochemistry where it is necessary CI j)R'R°CHOH-CR'R* R'R?C=CR*R* What should orientation of each substituent in reactant to convert it into product alkene? What is importance of their specific orientation?
- 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 H2O9) Draw the conformer structure, Newman projection, before elimination and the elimination product of the following reaction: Br CH3ONA HChoose the struture of B-D-mannopyranose OH OH OH OH OH HO но Но но но HO OH OH OH OH [a] [b] [c] OH OH OH но HO но OH OH OH OH [d] [e]
- Draw the products formed when both cis- and trans-but-2-ene are treated with OsO4, followed by hydrolysis with NaHSO3 + H2O. Explain how these reactions illustrate that syn dihydroxylation is stereospecic.Draw the products formed when both cis- and trans-but-2-ene are treated with OsO4, followed by hydrolysis with NaHSO3 + H2O. Explain how these reactions illustrate that syn dihydroxylation is stereospecific.Draw the organic product of the following reaction. CH3 m-CICgH,CO;H • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If the reaction produces a racemic mixture, just draw one stereoisomer. • If more than one product is possible, only draw the major product. opy aste